{"id":32205,"date":"2019-10-31T21:45:39","date_gmt":"2019-10-31T18:45:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novaya-statya-obzor-protsessora-intel-core-i5-9400f-nenastoyashhij-coffee-lake-refresh\/"},"modified":"2019-10-31T21:45:39","modified_gmt":"2019-10-31T18:45:39","slug":"novaya-statya-obzor-protsessora-intel-core-i5-9400f-nenastoyashhij-coffee-lake-refresh","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/novaya-statya-obzor-protsessora-intel-core-i5-9400f-nenastoyashhij-coffee-lake-refresh","title":{"rendered":"Nov\u00fd \u010dl\u00e1nek: P\u0159ehled procesoru Intel Core i5-9400F: neprav\u00fd Coffee Lake Refresh","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>I p\u0159es zjevn\u00e9 pot\u00ed\u017ee s v\u00fdrobou 14nm \u010dip\u016f v dostate\u010dn\u00e9m mno\u017estv\u00ed, spole\u010dnost Intel pokra\u010duje v postupn\u00e9m roz\u0161i\u0159ov\u00e1n\u00ed modelov\u00e9 \u0159ady procesor\u016f Core dev\u00e1t\u00e9 generace, zn\u00e1m\u00e9 pod k\u00f3dov\u00fdm n\u00e1zvem Coffee Lake Refresh. Pravda, jde j\u00ed to s prom\u011bnliv\u00fdm \u00fasp\u011bchem. Form\u00e1ln\u011b se do modelov\u00e9 \u0159ady skute\u010dn\u011b p\u0159id\u00e1vaj\u00ed nov\u00e9 produkty, av\u0161ak v maloobchodn\u00edm prodeji se objevuj\u00ed velmi neochotn\u011b, a n\u011bkter\u00e9 modely, kter\u00e9 byly p\u0159edstaveny hned po Nov\u00e9m roce, se dosud na reg\u00e1ly obchod\u016f nedostaly.<\/p>\n<p>P\u0159esto pokud vych\u00e1z\u00edme z ofici\u00e1ln\u00edch \u00fadaj\u016f, pro platformu LGA1151v2 v sou\u010dasn\u00e9 dob\u011b existuje alespo\u0148 dev\u011bt desktopov\u00fdch model\u016f Core pat\u0159\u00edc\u00edch do s\u00e9rie dev\u00edtitis\u00edc, mezi kter\u00fdmi jsou procesory se \u010dty\u0159mi, \u0161esti a osmi v\u00fdpo\u010detn\u00edmi j\u00e1dry. A nav\u00edc do t\u00e9to rodiny pat\u0159\u00ed nejen jasn\u00ed z\u00e1stupci se p\u0159edv\u00eddateln\u00fdmi charakteristikami, ale i p\u0159ekvapiv\u00e9 CPU, kter\u00e9 se od v\u0161ech p\u0159edch\u016fdc\u016f ideologicky li\u0161\u00ed. Hovo\u0159\u00edme o procesorech s\u00e9rie F \u2013 masov\u00fdch desktopov\u00fdch \u010dipech, u nich\u017e se ve specifikac\u00edch neuv\u00e1d\u00ed integrovan\u00e9 grafick\u00e9 j\u00e1dro.<\/p>\n<p>Na jejich vzniku je p\u0159ekvapuj\u00edc\u00ed to, \u017ee podobn\u00e9 nab\u00eddky poprv\u00e9 roz\u0161\u00ed\u0159ily sortiment spot\u0159ebitelsk\u00fdch procesor\u016f Intel za posledn\u00edch osm let, b\u011bhem nich\u017e spole\u010dnost nab\u00edzela pro masov\u00fd segment v\u00fdhradn\u011b \u0159e\u0161en\u00ed s integrovanou grafikou. Nyn\u00ed se v\u0161ak n\u011bco zm\u011bnilo a mikroprocesorov\u00fd gigant byl nucen p\u0159ehodnotit sv\u00e9 principy. A v\u00edme, co se stalo: chyby v pl\u00e1nov\u00e1n\u00ed a pot\u00ed\u017ee se zaveden\u00edm technologie s 10nm normami vedly k v\u00e1\u017en\u00e9mu nedostatku procesor\u016f Intel na trhu, jeho\u017e zm\u00edrn\u011bn\u00ed se spole\u010dnost sna\u017e\u00ed ve\u0161kerou silou. Vyd\u00e1n\u00ed procesor\u016f bez integrovan\u00e9 grafiky je jedn\u00edm z dost o\u010dividn\u00fdch opat\u0159en\u00ed sm\u011b\u0159uj\u00edc\u00edch k dosa\u017een\u00ed tohoto c\u00edle. D\u00edky tomu m\u011bl v\u00fdrobce mo\u017enost umis\u0165ovat do s\u00e9riov\u00fdch procesor\u016f d\u0159\u00edve pova\u017eovan\u00e9 za vadn\u00e9 polotovary s po\u0161kozen\u00fdm grafick\u00fdm j\u00e1drem, kter\u00e9 i u osmij\u00e1drov\u00e9ho Coffee Lake Refresh \u201eukrajuje\u201c a\u017e 30 % plochy 174mm \u010dipu. Jin\u00fdmi slovy, takov\u00e9 opat\u0159en\u00ed m\u016f\u017ee zv\u00fd\u0161it v\u00fdt\u011b\u017eek kvalitn\u00edch v\u00fdrobk\u016f a v\u00fdrazn\u011b sn\u00ed\u017eit odpad.<\/p>\n<p>Zat\u00edmco pokud m\u00e1 pro Intel smysl vyd\u00e1vat procesory s\u00e9rie F, ot\u00e1zka, zda z toho maj\u00ed prosp\u011bch spot\u0159ebitel\u00e9, je velmi sporn\u00e1. Zvolen\u00e1 taktika v\u00fdrobce je takov\u00e1, \u017ee procesory, kter\u00e9 maj\u00ed omezen\u00e9 mo\u017enosti, jsou prod\u00e1v\u00e1ny za stejnou cenu jako jejich \"plnohodnotn\u00ed\" kolegov\u00e9, a to bez jak\u00e9koliv slevy. Abychom se v t\u00e9to situaci podrobn\u011b zorientovali, rozhodli jsme se otestovat jednoho z\u00e1stupce modelov\u00e9 \u0159ady Core dev\u00e1t\u00e9 generace, kter\u00fd nem\u00e1 integrovanou grafiku, a pokusit se naj\u00edt jeho skryt\u00e9 v\u00fdhody.<\/p>\n<p><img decoding=\"async\" alt=\"Nov\u00fd \u010dl\u00e1nek: P\u0159ehled procesoru Intel Core i5-9400F: neprav\u00fd Coffee Lake Refresh\" src=\"\/wp-content\/uploads\/2019\/04\/372d34c6636a4aac89e597a7bf8e58d6.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Jako objekt pro zkoum\u00e1n\u00ed byl vybr\u00e1n Core i5-9400F \u2013 ni\u017e\u0161\u00ed \u0161estij\u00e1drov\u00fd procesor generace Coffee Lake Refresh. Tento \u010dip vzbuzuje zvl\u00e1\u0161tn\u00ed z\u00e1jem: jeho p\u0159edch\u016fdce, <noindex><\/a>Core i5-8400<\/a><\/noindex>, byl v dob\u011b sv\u00e9ho uv\u00e1d\u011bn\u00ed na trh velmi popul\u00e1rn\u00ed d\u00edky v\u00fdjime\u010dn\u011b atraktivn\u00edmu pom\u011bru ceny a v\u00fdkonu. Ofici\u00e1ln\u011b ozn\u00e1men\u00fd p\u0159ed \u010dty\u0159mi m\u011bs\u00edci Core i5-9400 (bez F v n\u00e1zvu) nab\u00edz\u00ed o n\u011bco vy\u0161\u0161\u00ed taktovac\u00ed frekvence za stejnou cenu, av\u0161ak jeho nalezen\u00ed na trhu je t\u00e9m\u011b\u0159 nemo\u017en\u00e9. Naopak Core i5-9400F je k dispozici t\u00e9m\u011b\u0159 v\u0161ude, a co v\u00edc, proto\u017ee na tuto modelovou \u0159adu nen\u00ed \u017e\u00e1dn\u00fd nedostatek, jeho skute\u010dn\u00e1 cena v maloobchodn\u00edm prodeji je maxim\u00e1ln\u011b bl\u00edzk\u00e1 doporu\u010den\u00e9. Nicm\u00e9n\u011b to automaticky neznamen\u00e1, \u017ee Core i5-9400F je dobrou volbou pro \"z\u00e1kladn\u00ed\" konfigurace, nebo\u0165 nyn\u00ed AMD v t\u00e9\u017ee cenov\u00e9 kategorii nab\u00edz\u00ed \u0161estij\u00e1drov\u00e9 procesory Ryzen 5, kter\u00e9 na rozd\u00edl od procesor\u016f s\u00e9rie Core i5 podporuj\u00ed v\u00edcevl\u00e1kno (SMT). Pr\u00e1v\u011b proto slibuje dne\u0161n\u00ed test b\u00fdt zvl\u00e1\u0161\u0165 obsahov\u00fd: m\u011bl by poskytnout odpov\u011bdi na n\u011bkolik ot\u00e1zek a jednozna\u010dn\u011b uk\u00e1zat, zda m\u00e1 Core i5-9400F \u0161anci zopakovat \u00fasp\u011bch legend\u00e1rn\u00edho Core i5-8400.<\/p>\n<p class=\"h1\">Modelov\u00e1 \u0159ada Coffee Lake Refresh<\/p>\n<p>V sou\u010dasn\u00e9 dob\u011b ji\u017e prob\u011bhly dv\u011b vlny ozn\u00e1men\u00ed procesor\u016f, kter\u00e9 lze zjednodu\u0161en\u011b za\u0159adit do generace Coffee Lake Refresh. I kdy\u017e jsou tyto CPU velmi podobn\u00e9 sv\u00fdm p\u0159edch\u016fdc\u016fm z rodiny Coffee Lake, firma Intel je \u0159ad\u00ed do dev\u00e1t\u00e9 generace Core a \u010d\u00edsluje indexy za\u010d\u00ednaj\u00edc\u00ed \u010d\u00edslem 9. A zat\u00edmco u Core i7 a Core i9 m\u016f\u017ee b\u00fdt tato klasifikace z\u010d\u00e1sti od\u016fvodn\u011bn\u00e1, proto\u017ee poprv\u00e9 z\u00edskaly osm v\u00fdpo\u010detn\u00edch jader, nov\u00e9 procesory \u0159ady Core i5 a Core i3 obdr\u017eely zv\u00fd\u0161en\u00ed modelov\u00fdch \u010d\u00edsel v\u011bt\u0161inou pouze z d\u016fvodu marketingu. V podstat\u011b nab\u00edzej\u00ed pouze zv\u00fd\u0161en\u00e9 taktovac\u00ed frekvence.<\/p>\n<p>P\u0159i tom nem\u016f\u017ee b\u00fdt \u0159e\u010d o \u017e\u00e1dn\u00fdch vylep\u0161en\u00edch na \u00farovni mikroarchitektury. A up\u0159\u00edmn\u011b \u0159e\u010deno, to v\u016fbec nep\u0159ekvapuje. Praktikovan\u00e1 koncepce v\u00fdvoje od Intelu spo\u010d\u00edv\u00e1 v tom, \u017ee hlubok\u00e9 zm\u011bny v procesorech se v\u00e1\u017eou na zlep\u0161en\u00ed v\u00fdrobn\u00edch technologi\u00ed. Proto zpo\u017ed\u011bn\u00ed p\u0159i zav\u00e1d\u011bn\u00ed 10nm v\u00fdrobn\u00edho procesu vede k tomu, \u017ee se op\u011bt pot\u00fdk\u00e1me s mikroarchitekturou Skylake, kter\u00e1 spat\u0159ila sv\u011btlo sv\u011bta ji\u017e v roce 2015. Av\u0161ak p\u0159ekvapuj\u00edc\u00ed je n\u011bco jin\u00e9ho: z n\u011bjak\u00e9ho d\u016fvodu Intel nechce m\u011bnit ani specifikace, kter\u00e9 nevy\u017eaduj\u00ed n\u011bjak\u00e9 znateln\u00e9 p\u0159em\u011bny. Nap\u0159\u00edklad ofici\u00e1ln\u011b Coffee Lake Refresh i nad\u00e1le c\u00edl\u00ed na dvoukan\u00e1lovou DDR4-2666 pam\u011b\u0165, zat\u00edmco spole\u010dnost AMD opakovan\u011b p\u0159id\u00e1v\u00e1 podpo\u0159e sv\u00fdch procesor\u016f rychlej\u0161\u00ed re\u017eimy, kdy\u017e ve sv\u00fdch posledn\u00edch verz\u00edch mobiln\u00edch Raven Ridge ji\u017e dosp\u011bla a\u017e na DDR4-3200. Jedin\u00e1 v\u011bc, kterou Intel v reakci ud\u011blala, je zv\u00fd\u0161en\u00ed maxim\u00e1ln\u00ed podpory pam\u011bti na 128 GB v syst\u00e9mech zalo\u017een\u00fdch na Coffee Lake Refresh.<\/p>\n<p>Nicm\u00e9n\u011b, p\u0159esto\u017ee nedo\u0161lo k \u017e\u00e1dn\u00fdm zm\u011bn\u00e1m v mikroarchitektu\u0159e, Intel zat\u00edm dok\u00e1\u017ee produkovat zaj\u00edmav\u00e9 modely extensivn\u00edmi metodami \u2013 zvy\u0161ov\u00e1n\u00edm po\u010dtu v\u00fdpo\u010detn\u00edch jader a taktovac\u00edch frekvenc\u00ed. Prvn\u00ed vlna ozn\u00e1men\u00ed Coffee Lake Refresh, kter\u00e1 prob\u011bhla v \u0159\u00edjnu minul\u00e9ho roku, p\u0159inesla t\u0159i vlajkov\u00e9 overclockersk\u00e9 procesory, kter\u00e9 p\u0159ekonaly nov\u00e9 hranice v\u00fdkonnosti: osmij\u00e1drov\u00e9 Core i9-9900K a Core i7-9700K, stejn\u011b jako \u0161estij\u00e1drov\u00e9 Core i5-9600K. Se druhou, v\u00e1no\u010dn\u00ed vlnou se seznam nejnov\u011bj\u0161\u00edch procesor\u016f roz\u0161\u00ed\u0159il o dal\u0161\u00edch \u0161est jednodu\u0161\u0161\u00edch model\u016f CPU. V d\u016fsledku toho vypad\u00e1 cel\u00e1 nomenklatura Coffee Lake Refresh takto.<\/p>\n<table class=\"neat\">\n<tr class=\"dark\">\n<th><\/th>\n<th>J\u00e1dra \/ vl\u00e1kna<\/th>\n<th>Z\u00e1kladn\u00ed frekvence, GHz<\/th>\n<th>Turbo frekvence, GHz<\/th>\n<th>L3 cache, MB<\/th>\n<th>iGPU<\/th>\n<th>Frekvence iGPU, GHz<\/th>\n<th>Pam\u011b\u0165<\/th>\n<th>TDP, W<\/th>\n<th>Cena<\/th>\n<\/tr>\n<tbody>\n<tr>\n<td><strong>Core i9\u20119900K<\/strong><\/td>\n<td>8\/16<\/td>\n<td>3,6<\/td>\n<td>5,0<\/td>\n<td>16<\/td>\n<td>UHD 630<\/td>\n<td>1,2<\/td>\n<td>DDR4\u20112666<\/td>\n<td>95<\/td>\n<td>$488<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i9\u20119900KF<\/strong><\/td>\n<td>8\/16<\/td>\n<td>3,6<\/td>\n<td>5,0<\/td>\n<td>16<\/td>\n<td>Ne<\/td>\n<td>&#8212;<\/td>\n<td>DDR4\u20112666<\/td>\n<td>95<\/td>\n<td>$488<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i7\u20119700K<\/strong><\/td>\n<td>8\/8<\/td>\n<td>3,6<\/td>\n<td>4,9<\/td>\n<td>12<\/td>\n<td>UHD 630<\/td>\n<td>1,2<\/td>\n<td>DDR4\u20112666<\/td>\n<td>95<\/td>\n<td>$374<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i7\u20119700KF<\/strong><\/td>\n<td>8\/8<\/td>\n<td>3,6<\/td>\n<td>4,9<\/td>\n<td>12<\/td>\n<td>Ne<\/td>\n<td>&#8212;<\/td>\n<td>DDR4\u20112666<\/td>\n<td>95<\/td>\n<td>$374<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i5\u20119600K<\/strong><\/td>\n<td>6\/6<\/td>\n<td>3,7<\/td>\n<td>4,6<\/td>\n<td>9<\/td>\n<td>UHD 630<\/td>\n<td>1,15<\/td>\n<td>DDR4\u20112666<\/td>\n<td>95<\/td>\n<td>$262<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i5\u20119600KF<\/strong><\/td>\n<td>6\/6<\/td>\n<td>3,7<\/td>\n<td>4,6<\/td>\n<td>9<\/td>\n<td>Ne<\/td>\n<td>&#8212;<\/td>\n<td>DDR4\u20112666<\/td>\n<td>95<\/td>\n<td>$262<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i5\u20119400<\/strong><\/td>\n<td>6\/6<\/td>\n<td>2,9<\/td>\n<td>4,1<\/td>\n<td>9<\/td>\n<td>UHD 630<\/td>\n<td>1,05<\/td>\n<td>DDR4\u20112666<\/td>\n<td>65<\/td>\n<td>$182<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i5\u20119400F<\/strong><\/td>\n<td>6\/6<\/td>\n<td>2,9<\/td>\n<td>4,1<\/td>\n<td>9<\/td>\n<td>Ne<\/td>\n<td>&#8212;<\/td>\n<td>DDR4\u20112666<\/td>\n<td>65<\/td>\n<td>$182<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i3\u20119350KF<\/strong><\/td>\n<td>4\/4<\/td>\n<td>4,0<\/td>\n<td>4,6<\/td>\n<td>8<\/td>\n<td>Ne<\/td>\n<td>&#8212;<\/td>\n<td>DDR4\u20112400<\/td>\n<td>91<\/td>\n<td>$173<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Hlavn\u00ed \u010d\u00e1st procesor\u016f, kter\u00e9 byly p\u0159id\u00e1ny k p\u016fvodn\u011b vydan\u00fdm overclockersk\u00fdm K-modell\u016fm, se skl\u00e1d\u00e1 z \u010dip\u016f, kter\u00e9 postr\u00e1daj\u00ed integrovan\u00e9 grafick\u00e9 j\u00e1dro. Technicky jsou Core i9-9900KF, Core i7-9700KF a Core i5-9600KF zalo\u017eeny na identick\u00e9m polovodi\u010dov\u00e9m z\u00e1kladu a maj\u00ed naprosto shodn\u00e9 charakteristiky jako Core i9-9900K, Core i7-9700K a Core i5-9600K, li\u0161\u00ed se pouze t\u00edm, \u017ee nenab\u00edzej\u00ed integrovan\u00e9 GPU, kter\u00e9 je v nich hardwarov\u011b blokov\u00e1no p\u0159i v\u00fdrob\u011b.<\/p>\n<p>Ale v seznamu novinek druh\u00e9 vlny lze vid\u011bt i skute\u010dn\u011b nov\u00e9 modely. P\u0159edev\u0161\u00edm to je Core i3-9350KF \u2013 jedin\u00fd \u010dty\u0159j\u00e1drov\u00fd procesor mezi Coffee Lake Refresh s odem\u010den\u00fdm n\u00e1sobi\u010dem. Pokud zav\u0159eme o\u010di nad absenc\u00ed integrovan\u00e9ho GPU, m\u016f\u017ee b\u00fdt pova\u017eov\u00e1n za aktualizovanou verzi Core i3-8350K, kter\u00e1 byla zrychlena d\u00edky p\u0159id\u00e1n\u00ed technologie Turbo Boost 2.0 a schopnosti automatick\u00e9ho p\u0159etaktov\u00e1n\u00ed na 4,6 GHz.<\/p>\n<p>Dal\u0161\u00ed pom\u011brn\u011b plnopr\u00e1vnou novinkou ve druh\u00e9 vln\u011b lze pova\u017eovat Core i5-9400 a jeho variantu bez integrovan\u00e9 grafiky, Core i5-9400F. Hodnota t\u011bchto model\u016f spo\u010d\u00edv\u00e1 v tom, \u017ee Intel v\u00fdrazn\u011b sn\u00ed\u017eil cenu sv\u00fdch z\u00e1kladn\u00edch \u0161estij\u00e1drov\u00fdch procesor\u016f Coffee Lake Refresh, co\u017e umo\u017e\u0148uje vyu\u017e\u00edt nejnov\u011bj\u0161\u00ed generaci CPU v z\u00e1kladn\u00edch konfigurac\u00edch. Nicm\u00e9n\u011b form\u00e1ln\u00edch rozd\u00edl\u016f mezi Core i5-9400 a lo\u0148sk\u00fdm hitem, Core i5-8400, nen\u00ed tolik. Taktovac\u00ed frekvence vzrostly pouze o 100 MHz, co\u017e pravd\u011bpodobn\u011b souvis\u00ed s p\u0159\u00e1n\u00edm mikropo\u010d\u00edta\u010dov\u00e9ho giganta udr\u017eet sv\u00e9 mlad\u0161\u00ed \u0161estij\u00e1drov\u00e9 modely v r\u00e1mci 65W tepeln\u00fdch bal\u00ed\u010dk\u016f. V d\u016fsledku toho se rozd\u00edl v maxim\u00e1ln\u00edch frekvenc\u00edch v turbo re\u017eimu mezi star\u0161\u00edmi a mlad\u0161\u00edmi \u0161estij\u00e1drov\u00fdmi procesory v rodin\u011b Coffee Lake Refresh zv\u00fd\u0161il na 500 MHz, zat\u00edmco v generaci Coffee Lake to bylo pouze 300 MHz.<\/p>\n<p>Z pohledu specifikac\u00ed se m\u016f\u017ee zd\u00e1t, \u017ee nov\u00fdmi procesory Core i5-9400 a Core i5-9400F nem\u00e1me co porovn\u00e1vat se star\u00fdm Core i5-8400. Nicm\u00e9n\u011b specifikace v tomto p\u0159\u00edpad\u011b neposkytuj\u00ed \u00fapln\u00fd obraz. P\u0159i ozn\u00e1men\u00ed prvn\u00edch Coffee Lake Refresh Intel hovo\u0159il tak\u00e9 o nep\u0159\u00edm\u00fdch v\u00fdhod\u00e1ch. Bylo nap\u0159\u00edklad slibov\u00e1no, \u017ee nov\u00e9 generace \u010dip\u016f p\u0159inese zm\u011bnu vnit\u0159n\u00edho tepeln\u011b vodiv\u00e9ho materi\u00e1lu: m\u00edsto polymern\u00ed pasty by m\u011bl nahradit vysoce efektivn\u00ed p\u00e1jka bez tavidla. Ale m\u00e1 to n\u011bjak\u00fd vztah k ni\u017e\u0161\u00edm \u0161estij\u00e1drov\u00fdm procesor\u016fm Core dev\u00e1t\u00e9 generace? Odpov\u011b\u010f zn\u00ed: ne v\u017edy.<\/p>\n<p class=\"h1\">Podrobnosti o Core i5-9400F<\/p>\n<p>Stalo se jaksi, \u017ee kdy\u017e Intel uv\u00e1d\u011bl procesory Coffee Lake Refresh, shrom\u00e1\u017edil dohromady n\u011bkolik r\u016fzn\u00fdch variant polovodi\u010dov\u00fdch kristal\u016f s v\u00fdrobn\u00edm procesem 14++ nm, a ne v\u0161echny z nich jsou skute\u010dn\u011b nov\u00e9. Z\u00e1kladem procesor\u016f dev\u00e1t\u00e9 generace Core mohou b\u00fdt jak polovodi\u010dov\u00e9 krystaly speci\u00e1ln\u011b navr\u017een\u00e9 pro n\u011b, tak i relativn\u011b star\u00e9 varianty k\u0159em\u00edku, kter\u00e9 byly aktivn\u011b pou\u017e\u00edv\u00e1ny tak\u00e9 v osm\u00e9 generaci procesor\u016f, pat\u0159\u00edc\u00edch do rodiny Coffee Lake.<\/p>\n<p>Konkr\u00e9tn\u011b je v sou\u010dasnosti zn\u00e1mo o existenci alespo\u0148 \u010dty\u0159ech stupn\u00edch kristal\u016f, kter\u00e9 se pou\u017e\u00edvaj\u00ed v r\u016fzn\u00fdch masov\u011b vyr\u00e1b\u011bn\u00fdch procesorech Core s \u010d\u00edsly z dev\u00e1t\u00e9 s\u00e9rie:<\/p>\n<ul>\n<li>P0 \u2013 jedin\u00e1 dnes \u201e\u010destn\u00e1\u201c varianta kristalu, kterou m\u016f\u017eeme opravdu nazvat Coffee Lake Refresh. Tento krystal m\u00e1 osm v\u00fdpo\u010detn\u00edch jader a pou\u017e\u00edv\u00e1 se v p\u0159etaktovan\u00fdch procesorech Core i9-9900K, Core i7-9700K a Core i5-9600K, v jejich F variant\u00e1ch Core i9-9900KF, Core i7-9700KF a Core i5-9600KF, stejn\u011b jako v procesoru Core i5-9400;<\/li>\n<li>U0 \u2013 \u0161estij\u00e1drov\u00fd krystal, kter\u00fd byl d\u0159\u00edve pou\u017e\u00edv\u00e1n v procesorech Coffee Lake, tedy v osm\u00e9 generaci Core. Nyn\u00ed se pou\u017e\u00edv\u00e1 pro v\u00fdrobu \u0161estij\u00e1drov\u00e9ho Core i5-9400F;<\/li>\n<li>B0 \u2013 \u010dty\u0159j\u00e1drov\u00fd krystal, kter\u00fd se pou\u017e\u00edv\u00e1 v procesorech Core i3-9350K. Tato varianta k\u0159em\u00edku tak\u00e9 p\u0159i\u0161la do tohoto procesoru p\u0159\u00edmo ze \u010dty\u0159j\u00e1drov\u00fdch Coffee Lake, v\u010detn\u011b Core i3-8350K;<\/li>\n<li>R0 \u2013 nov\u00fd stepping krystalu, na kter\u00fd, jak se p\u0159edpokl\u00e1d\u00e1, budou p\u0159ev\u00e1d\u011bny vy\u0161\u0161\u00ed procesory dev\u00e1t\u00e9 generace Core, po\u010d\u00ednaje kv\u011btnem. V sou\u010dasnosti se v s\u00e9riov\u00fdch CPU nevyskytuje, a proto nejsou k dispozici \u017e\u00e1dn\u00e9 konkr\u00e9tn\u00ed informace o jeho vlastnostech a d\u016fvodech vzniku.<\/li>\n<\/ul>\n<p>Tak\u017ee Core i5-9400F, o kter\u00e9m hovo\u0159\u00edme v t\u00e9to recenzi, \u2013 je b\u00edl\u00e1 vr\u00e1na: jedin\u00fd sv\u00e9ho druhu procesor, kter\u00fd se vnit\u0159n\u00ed konstrukc\u00ed li\u0161\u00ed od ostatn\u00edch \u0161estij\u00e1drov\u00fdch a osmij\u00e1drov\u00fdch sourozenc\u016f generace Coffee Lake Refresh. P\u0159\u00edsn\u011b vzato, p\u0159edstavuje to neomezenou nebo zpomalenou verzi Core i5-9600K nebo Core i5-9400, ale lehce p\u0159etaktovanou variantu star\u00e9ho Core i5-8400 s vypnut\u00fdm grafick\u00fdm j\u00e1drem.<\/p>\n<p><img decoding=\"async\" alt=\"Nov\u00fd \u010dl\u00e1nek: P\u0159ehled procesoru Intel Core i5-9400F: neprav\u00fd Coffee Lake Refresh\" src=\"\/wp-content\/uploads\/2019\/04\/2b779d512ffeb99520765ee70f3bb05e.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>A je t\u0159eba \u0159\u00edci, \u017ee se to projevuje nejen na sn\u00edmc\u00edch diagnostick\u00fdch n\u00e1stroj\u016f, kter\u00e9 pro Core i5-9400F ukazuj\u00ed star\u00fd stepping U0 m\u00edsto nov\u00e9ho P0. Skute\u010dn\u011b neexistuj\u00ed \u017e\u00e1dn\u00e9 novinky, kter\u00e9 by byly vlastn\u00ed Coffee Lake Refresh. Nap\u0159\u00edklad p\u0159i v\u00fdrob\u011b t\u011bchto \u010dip\u016f se nepou\u017e\u00edv\u00e1 p\u00e1jen\u00ed \u010dipu k tepeln\u011b rozv\u00e1d\u011bc\u00ed krytce a intern\u00edm tepeln\u00fdm rozhran\u00edm je naprosto stejn\u00e1 polymern\u00ed termopasta, kter\u00e1 byla pou\u017eita v procesorech Coffee Lake.<\/p>\n<p><img decoding=\"async\" alt=\"Nov\u00fd \u010dl\u00e1nek: P\u0159ehled procesoru Intel Core i5-9400F: neprav\u00fd Coffee Lake Refresh\" src=\"\/wp-content\/uploads\/2019\/04\/0c921a805823e9c5e0688171673f1ce9.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Krom\u011b toho, Core i5-9400F, na rozd\u00edl od ostatn\u00edch procesor\u016f generace Coffee Lake Refresh, jsou sestavov\u00e1ny na desce s ten\u010d\u00edm textiln\u00edm laminate \u2013 stejn\u00e9m, jak\u00fd se pou\u017e\u00edval pro b\u011b\u017en\u00e9 Coffee Lake.<\/p>\n<p><img decoding=\"async\" alt=\"Nov\u00fd \u010dl\u00e1nek: P\u0159ehled procesoru Intel Core i5-9400F: neprav\u00fd Coffee Lake Refresh\" src=\"\/wp-content\/uploads\/2019\/04\/d669d204c14b057cb30c1c1481c16e89.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>A nav\u00edc, i tvar tepeln\u00e9 rozv\u00e1d\u011bc\u00ed krytky u Core i5-9400F prozrazuje p\u0159\u00edbuznost tohoto procesoru s Core osm\u00e9 generace. U skute\u010dn\u00fdch Coffee Lake Refresh se krytka zm\u011bnila.<\/p>\n<p><img decoding=\"async\" alt=\"Nov\u00fd \u010dl\u00e1nek: P\u0159ehled procesoru Intel Core i5-9400F: neprav\u00fd Coffee Lake Refresh\" src=\"\/wp-content\/uploads\/2019\/04\/446e226278e362ffccb23d72ffcccbfe.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>Jin\u00fdmi slovy, nen\u00ed pochyb o tom, \u017ee Core i5-9400F nen\u00ed ve skute\u010dnosti Coffee Lake Refresh, ale p\u0159ebran\u00e1 j\u00e1dra z p\u0159edchoz\u00ed generace s vypnutou grafickou jednotkou. T\u00fdk\u00e1 se to naprosto v\u0161ech dod\u00e1van\u00fdch s\u00e9riov\u00fdch Core i5-9400F, co\u017e do zna\u010dn\u00e9 m\u00edry vysv\u011btluje \u0161irokou dostupnost t\u011bchto procesor\u016f v dob\u011b, kdy s masov\u00fdmi dod\u00e1vkami ostatn\u00edch Coffee Lake Refresh i nad\u00e1le panuj\u00ed v\u00fdrazn\u00e9 probl\u00e9my. Nap\u0159\u00edklad form\u00e1ln\u011b ozn\u00e1men\u00fd sou\u010dasn\u011b s Core i5-9400F jeho \"plnohodnotn\u00fd\" prot\u011bj\u0161ek se vestav\u011bnou grafikou UHD Graphics 630, kter\u00fd by m\u011bl b\u00fdt zalo\u017een na \"skute\u010dn\u00e9m\" j\u00e1d\u0159e steppingu P0, je v maloobchod\u011b st\u00e1le nedostupn\u00fd.<\/p>\n<p>Z\u00e1rove\u0148 mikroprocesorov\u00fd gigant nevylu\u010duje mo\u017enost p\u0159echodu Core i5-9400F na \"spr\u00e1vn\u00fd\" stepping P0 v st\u0159edn\u011bdob\u00e9m horizontu. Ale to se z\u0159ejm\u011b stane, a\u017e budou v\u0161echny procesory Coffee Lake s vadn\u00fdm integrovan\u00fdm GPU \u00fasp\u011b\u0161n\u011b vyprod\u00e1ny ze sklad\u016f spole\u010dnosti.<\/p>\n<p>Pro v\u011bt\u0161inu u\u017eivatel\u016f v\u0161ak tato skute\u010dnost pad\u011bl\u00e1n\u00ed k\u0159em\u00edkov\u00fdch jader pravd\u011bpodobn\u011b nebude m\u00edt \u017e\u00e1dn\u00fd v\u00fdznam. Tak \u010di onak, Core i5-9400F je skute\u010dn\u00fd \u0161estij\u00e1drov\u00fd procesor bez podpory Hyper-Threading, kter\u00fd p\u0159i jak\u00e9koli z\u00e1t\u011b\u017ei b\u011b\u017e\u00ed o 100 MHz rychleji ne\u017e jeho p\u0159edch\u016fdce, Core i5-8400. A to znamen\u00e1, \u017ee na z\u00e1klad\u011b frekven\u010dn\u00ed formule odpov\u00edd\u00e1 Core i5-9400F o $10 dra\u017e\u0161\u00edmu Core i5-8500.<\/p>\n<p>A\u010dkoli se pro Core i5-9400F uv\u00e1d\u00ed relativn\u011b n\u00edzk\u00e1 z\u00e1kladn\u00ed frekvence 2,9 GHz, ve skute\u010dnosti je tento procesor schopen pracovat podstatn\u011b rychleji d\u00edky technologii Turbo Boost 2.0. P\u0159i aktivn\u00ed funkci Multi-Core Enhancements (to znamen\u00e1 v re\u017eimu nezm\u011bn\u011bn\u00e9m pro p\u0159ev\u00e1\u017enou v\u011bt\u0161inu z\u00e1kladn\u00edch desek) dok\u00e1\u017ee Core i5-9400F p\u0159i pln\u00e9 z\u00e1t\u011b\u017ei udr\u017eovat frekvenci 3,9 GHz, p\u0159i\u010dem\u017e se p\u0159i z\u00e1t\u011b\u017ei jednoho j\u00e1dra zvy\u0161uje a\u017e na 4,1 GHz.<\/p>\n<table class=\"neat\">\n<tbody>\n<tr>\n<td class=\"dark\" rowspan=\"2\">&nbsp;<\/td>\n<td class=\"dark\" rowspan=\"2\"><strong>Jmenovit\u00e1 frekvence<\/strong><\/td>\n<td class=\"dark\" colspan=\"6\"><strong>Maxim\u00e1ln\u00ed frekvence Turbo Boost 2.0<\/strong><\/td>\n<\/tr>\n<tr>\n<td class=\"light\"><strong>1 j\u00e1dro<\/strong><\/td>\n<td class=\"light\"><strong>2 j\u00e1dra<\/strong><\/td>\n<td class=\"light\"><strong>3 j\u00e1dra<\/strong><\/td>\n<td class=\"light\"><strong>4 j\u00e1dra<\/strong><\/td>\n<td class=\"light\"><strong>5 jader<\/strong><\/td>\n<td class=\"light\"><strong>6 jader<\/strong><\/td>\n<\/tr>\n<tr>\n<td><strong>Core i5-8400<\/strong><\/td>\n<td>2,8 GHz<\/td>\n<td>4,0 GHz<\/td>\n<td>3,9 GHz<\/td>\n<td>3,9 GHz<\/td>\n<td>3,9 GHz<\/td>\n<td>3,8 GHz<\/td>\n<td>3,8 GHz<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i5-8500<\/strong><\/td>\n<td>3,0 GHz<\/td>\n<td>4,1 GHz<\/td>\n<td>4,0 GHz<\/td>\n<td>4,0 GHz<\/td>\n<td>4,0 GHz<\/td>\n<td>3,9 GHz<\/td>\n<td>3,9 GHz<\/td>\n<\/tr>\n<tr>\n<td><strong>Core i5-9400(F)<\/strong><\/td>\n<td>2,9 GHz<\/td>\n<td>4,1 GHz<\/td>\n<td>4,0 GHz<\/td>\n<td>4,0 GHz<\/td>\n<td>4,0 GHz<\/td>\n<td>3,9 GHz<\/td>\n<td>3,9 GHz<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>O \u017e\u00e1dn\u00fdch mo\u017enostech p\u0159etaktov\u00e1n\u00ed v tomto ohledu samoz\u0159ejm\u011b nen\u00ed \u0159e\u010d. Nejv\u00edce, co m\u016f\u017ee Core i5-9400F nab\u00eddnout, je provoz na maxim\u00e1ln\u011b povolen\u00e9 frekvenci v r\u00e1mci technologie Turbo Boost 2.0. A na z\u00e1kladn\u00edch desk\u00e1ch s logick\u00fdmi sadami H370, B360 nebo H310 nebude mo\u017en\u00e9 vyu\u017e\u00edt rychlej\u0161\u00ed pam\u011bti ne\u017e DDR4-2666. Rychlej\u0161\u00ed re\u017eimy jsou dostupn\u00e9 v\u00fdhradn\u011b na desk\u00e1ch se star\u0161\u00edmi \u010dipsety Z370 nebo Z390.<\/p>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/3dnews.ru\/985738\">3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0435\u0441\u043c\u043e\u0442\u0440\u044f \u043d\u0430 \u044f\u0432\u043d\u044b\u0435 \u0442\u0440\u0443\u0434\u043d\u043e\u0441\u0442\u0438 \u0441 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u043e\u043c 14-\u043d\u043c \u0447\u0438\u043f\u043e\u0432 \u0432 \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u044b\u0445 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430\u0445, \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Intel \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u043f\u043b\u0430\u043d\u043e\u043c\u0435\u0440\u043d\u043e \u0440\u0430\u0441\u0448\u0438\u0440\u044f\u0442\u044c \u043c\u043e\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0440\u044f\u0434 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Core \u0434\u0435\u0432\u044f\u0442\u043e\u0433\u043e \u043f\u043e\u043a\u043e\u043b\u0435\u043d\u0438\u044f, \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e\u0433\u043e \u043f\u043e\u0434 \u043a\u043e\u0434\u043e\u0432\u044b\u043c \u0438\u043c\u0435\u043d\u0435\u043c Coffee Lake Refresh. \u041f\u0440\u0430\u0432\u0434\u0430, \u0434\u0430\u0451\u0442\u0441\u044f \u0435\u0439 \u044d\u0442\u043e \u0441 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u043c \u0443\u0441\u043f\u0435\u0445\u043e\u043c. \u0422\u043e \u0435\u0441\u0442\u044c \u0444\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u043e \u0432 \u043c\u043e\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u0440\u044f\u0434 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u043d\u043e\u0432\u044b\u0435 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u044b, \u043e\u0434\u043d\u0430\u043a\u043e \u0432 \u0440\u043e\u0437\u043d\u0438\u0447\u043d\u043e\u0439 \u043f\u0440\u043e\u0434\u0430\u0436\u0435 \u043e\u043d\u0438 \u043f\u043e\u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u043e\u0447\u0435\u043d\u044c \u043d\u0435\u043e\u0445\u043e\u0442\u043d\u043e, \u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":24032,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-32205","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" 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