{"id":31677,"date":"2019-10-31T21:42:30","date_gmt":"2019-10-31T18:42:30","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novaya-statya-geforce-rtx-bolshe-ne-nuzhen-testy-trassirovki-luchej-na-uskoritelyah-geforce-gtx-10-i-16\/"},"modified":"2019-10-31T21:42:30","modified_gmt":"2019-10-31T18:42:30","slug":"novaya-statya-geforce-rtx-bolshe-ne-nuzhen-testy-trassirovki-luchej-na-uskoritelyah-geforce-gtx-10-i-16","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/novaya-statya-geforce-rtx-bolshe-ne-nuzhen-testy-trassirovki-luchej-na-uskoritelyah-geforce-gtx-10-i-16","title":{"rendered":"Nov\u00fd \u010dl\u00e1nok: Potrebujete GeForce RTX? Testy ray tracingu na akceler\u00e1toroch GeForce GTX 10 a 16","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Po tom, \u010do NVIDIA demon\u0161trovala prer\u00e1\u017eanie l\u00fa\u010dov v re\u00e1lnom \u010dase na grafick\u00fdch kart\u00e1ch s\u00e9rie GeForce RTX, je \u0165a\u017ek\u00e9 pochybova\u0165 o tom, \u017ee pr\u00e1ve t\u00e1to technol\u00f3gia (v rozumnom spojen\u00ed s algoritmom rastr\u00e1cie) je bud\u00facnos\u0165ou po\u010d\u00edta\u010dov\u00fdch hier. Av\u0161ak grafick\u00e9 procesory zalo\u017een\u00e9 na architekt\u00fare Turing so \u0161pecializovan\u00fdmi RT jadrami boli a\u017e do ned\u00e1vna pova\u017eovan\u00e9 za jedin\u00fa kateg\u00f3riu diskr\u00e9tnych GPU, ktor\u00e1 m\u00e1 potrebn\u00fd v\u00fdpo\u010dtov\u00fd v\u00fdkon na to, aby t\u00fato technol\u00f3giu zvl\u00e1dla.<\/p>\n

Testy prv\u00fdch hier, ktor\u00e9 osvojili Ray Tracing (Battlefield V, Metro Exodus a Shadow of the Tomb Raider), uk\u00e1zali, \u017ee aj akceler\u00e1tory GeForce RTX (najm\u00e4 ten najmlad\u0161\u00ed z nich \u2013 RTX 2060) za\u017e\u00edvaj\u00fa v\u00fdrazn\u00fd pokles sn\u00edmkovej frekvencie pri \u00faloh\u00e1ch hybridn\u00e9ho renderovania. Napriek po\u010diato\u010dn\u00fdm \u00faspechom nie je mo\u017en\u00e9 pova\u017eova\u0165 realtime ray tracing za zrel\u00fa technol\u00f3giu. A\u017e ke\u010f nielen tie najpokro\u010dilej\u0161ie a najdrah\u0161ie zariadenia, ale aj grafick\u00e9 karty strednej cenovej \u00farovne dosiahnu predch\u00e1dzaj\u00face \u0161tandardy v\u00fdkonnosti v najnov\u0161\u00edch hr\u00e1ch, m\u00f4\u017eeme vyhl\u00e1si\u0165, \u017ee zmena paradigmy, ktor\u00fa spustil Jensen Huang, sa kone\u010dne uskuto\u010dnila.<\/p>\n

\"Nov\u00fd<\/p>\n

Ray tracing na «Pascaloch» \u2013 za a proti<\/strong><\/p>\n

Ale u\u017e teraz, k\u00fdm e\u0161te nepadla ani zmienka o bud\u00facom n\u00e1stupcovi architekt\u00fary Turing, NVIDIA sa rozhodla podpori\u0165 pokrok. Na podujat\u00ed GPU Technology Conference minul\u00fd mesiac zelen\u00fd t\u00edm ozn\u00e1mil, \u017ee akceler\u00e1tory na \u010dipoch Pascal, ako aj mlad\u0161\u00ed z\u00e1stupcovia rodiny Turing (s\u00e9ria GeForce GTX 16) z\u00edskaj\u00fa funkciu realtime ray tracing na \u00farovni produktov pod zna\u010dkou RTX. Dnes je s\u013e\u00faben\u00fd ovl\u00e1da\u010d u\u017e mo\u017en\u00e9 stiahnu\u0165 na ofici\u00e1lnej str\u00e1nke NVIDIA, a zoznam zariaden\u00ed zah\u0155\u0148a modely zo s\u00e9rie GeForce 10, po\u010dn\u00fac GeForce GTX 1060 (verzia 6 GB), profesion\u00e1lny akceler\u00e1tor TITAN V na \u010dipe Volta a, samozrejme, nov\u00e1\u010dikov v strednej cenovej kateg\u00f3rii na \u010dipe TU116 \u2013 GeForce GTX 1660 a GTX 1660 Ti. Aktualiz\u00e1cia sa t\u00fdka aj notebookov s pr\u00edslu\u0161n\u00fdmi GPU.<\/p>\n

Z technick\u00e9ho h\u013eadiska tu nie je ni\u010d nadprirodzen\u00e9. Grafick\u00e9 procesory so zjednoten\u00fdmi shaderov\u00fdmi blokmi mohli vykon\u00e1va\u0165 Ray Tracing u\u017e dlho pred pr\u00edchodom architekt\u00fary Turing, hoci v tom \u010dase nemali dostato\u010dn\u00fd v\u00fdkon na to, aby bola t\u00e1to funkcia \u017eiadan\u00e1 v hr\u00e1ch. Okrem toho ch\u00fdbal jednotn\u00fd \u0161tandard programov\u00fdch met\u00f3d, okrem uzavret\u00fdch API ako propriet\u00e1rny NVIDIA OptiX. Teraz, ke\u010f existuje roz\u0161\u00edrenie DXR pre Direct3D 12 a podobn\u00e9 kni\u017enice v programovacom rozhran\u00ed Vulkan, m\u00f4\u017ee hern\u00fd engine na ne odkazova\u0165 bez oh\u013eadu na to, \u010di je grafick\u00fd procesor vybaven\u00fd \u0161pecializovanou logikou \u2014 len aby ovl\u00e1da\u010d t\u00fato mo\u017enos\u0165 poskytoval. \u010cipy Turing maj\u00fa na tento \u00fa\u010del samostatn\u00e9 RT-jadr\u00e1, zatia\u013e \u010do v GPU architekt\u00fary Pascal a procesore TU116 je ray tracing implementovan\u00fd v r\u00e1mci v\u00fdpo\u010dtov v\u0161eobecn\u00e9ho \u00fa\u010delu na sieti shaderov\u00fdch ALU.<\/p>\n

\"Nov\u00fd<\/p>\n

Av\u0161ak v\u0161etko, \u010do vieme o architekt\u00fare Turing z vyjadren\u00ed samotnej NVIDIA, nazna\u010duje, \u017ee Pascal nie je vhodn\u00fd pre aplik\u00e1cie s podporou DXR. Na minuloro\u010dnej prezent\u00e1cii venovanej vlajkov\u00fdm modelom rodiny Turing \u2014 GeForce RTX 2080 a RTX 2080 Ti \u2014 in\u017einieri uv\u00e1dzali nasleduj\u00face \u010d\u00edsla. Ak by sme zamerali v\u0161etky zdroje najlep\u0161ej spotrebite\u013eskej grafickej karty predch\u00e1dzaj\u00facej gener\u00e1cie \u2014 GeForce GTX 1080 Ti \u2014 na v\u00fdpo\u010dty ray tracingu, celkov\u00fd v\u00fdkon by neprekro\u010dil 11 % toho, na \u010do teoreticky dosahuje RTX 2080 Ti. Rovnako d\u00f4le\u017eit\u00e9 je aj to, \u017ee vo\u013en\u00e9 CUDA-jadre \u010dipu Turing mo\u017eno z\u00e1rove\u0148 vyu\u017ei\u0165 na paraleln\u00e9 spracovanie in\u00fdch komponentov obrazu \u2014 vykon\u00e1vanie shaderov\u00fdch programov, frontu nereprodukovate\u013en\u00fdch v\u00fdpo\u010dtov Direct3D pri asynchr\u00f3nnom vykon\u00e1van\u00ed a podobne.<\/p>\n

\"Nov\u00fd<\/p>\n

V skuto\u010dn\u00fdch hr\u00e1ch je situ\u00e1cia zlo\u017eitej\u0161ia, preto\u017ee na existuj\u00facom hardv\u00e9ri v\u00fdvoj\u00e1ri obmedzene vyu\u017e\u00edvaj\u00fa funkcie DXR, pri\u010dom podstatn\u00fa \u010das\u0165 v\u00fdpo\u010dtov\u00e9ho za\u0165a\u017eenia na\u010falej zabezpe\u010duje rasteriz\u00e1cia a shaderov\u00e9 in\u0161trukcie. Okrem toho \u010das\u0165 r\u00f4znych efektov, ktor\u00e9 sa vytv\u00e1raj\u00fa pomocou sledovania l\u00fa\u010dov, je celkom dobre vykonate\u013en\u00e1 aj na CUDA-jadr\u00e1ch \u010dipov Pascal. Napr\u00edklad zrkadlov\u00e9 povrchy v Battlefield V nezoh\u013ead\u0148uj\u00fa sekund\u00e1rne odrazy l\u00fa\u010dov, a preto s\u00fa znesite\u013enou z\u00e1\u0165a\u017eou pre v\u00fdkonn\u00e9 grafick\u00e9 karty predch\u00e1dzaj\u00facej gener\u00e1cie. To ist\u00e9 plat\u00ed aj pre tiene v Shadow of the Tomb Raider, hoci renderovanie zlo\u017eit\u00fdch tie\u0148ov vytvoren\u00fdch nieko\u013ek\u00fdmi sveteln\u00fdmi zdrojmi predstavuje u\u017e zlo\u017eitej\u0161iu \u00falohu. Av\u0161ak glob\u00e1lne osvetlenie v Metro Exodus je n\u00e1ro\u010dn\u00e9 aj pre \u201eTuring\u201c, a od Pascala nemo\u017eno o\u010dak\u00e1va\u0165 \u017eiadne porovnate\u013en\u00e9 v\u00fdsledky.<\/p>\n

Ako sa to vezme, hovor\u00edme o mnohon\u00e1sobnom rozdiele v teoretickom v\u00fdkone medzi predstavite\u013emi architekt\u00fary Turing a ich najbli\u017e\u0161\u00edmi anal\u00f3gmi na krem\u00edku Pascal. A prospech Turingu nezais\u0165uje len pr\u00edtomnos\u0165 RT-jadr\u00e1, ale aj mnoh\u00e9 vylep\u0161enia v\u0161eobecn\u00e9ho charakteru, ktor\u00e9 s\u00fa vlastn\u00e9 akceler\u00e1torom novej gener\u00e1cie. \u010cipy Turing dok\u00e1\u017eu paralelne vykon\u00e1va\u0165 oper\u00e1cie s re\u00e1lnymi (FP32) a cel\u00fdmi (INT) d\u00e1tami, maj\u00fa ve\u013ek\u00fd objem lok\u00e1lnej cache pam\u00e4te a samostatn\u00e9 CUDA-jadr\u00e1 pre v\u00fdpo\u010dty zn\u00ed\u017eenej presnosti (FP16). To v\u0161etko znamen\u00e1, \u017ee Turing nielen\u017ee lep\u0161ie zvl\u00e1da shaderov\u00e9 programy, ale aj relat\u00edvne efekt\u00edvne po\u010d\u00edta ray tracing bez \u0161pecializovan\u00fdch blokov. Ve\u010f tak n\u00e1ro\u010dn\u00fdm renderovan\u00edm pomocou Ray Tracingu nie je len a nie to\u013eko h\u013eadanie priese\u010dn\u00edkov medzi l\u00fa\u010dmi a geometrick\u00fdmi prvkami (na ktor\u00fdch pracuj\u00fa RT-jadr\u00e1), ale predov\u0161etk\u00fdm v\u00fdpo\u010det farby v bode priese\u010dn\u00edka (shading). A mimochodom, uveden\u00e9 prednosti architekt\u00fary Turing sa v plnej miere vz\u0165ahuj\u00fa aj na GeForce GTX 1660 a GTX 1660 Ti, aj ke\u010f v \u010dipe TU116 nie s\u00fa RT-jadr\u00e1, preto testy t\u00fdchto grafick\u00fdch kariet so softv\u00e9rov\u00fdm ray tracingom predstavuj\u00fa osobitn\u00fd z\u00e1ujem.<\/p>\n

Ale dos\u0165 te\u00f3rie, preto\u017ee sme u\u017e zhroma\u017edili d\u00e1ta o v\u00fdkonnosti \u201ePascala\u201c (ako aj mlad\u0161\u00edch \u201eTuringov\u201c) v Battlefield V, Metro Exodus a Shadow of the Tomb Raider na z\u00e1klade vlastn\u00fdch meran\u00ed. Poznamenajme, \u017ee ani ovl\u00e1da\u010d, ani samotn\u00e9 hry neupravuj\u00fa po\u010det l\u00fa\u010dov, aby zn\u00ed\u017eili za\u0165a\u017eenie GPU bez RT-jadier, \u010do znamen\u00e1, \u017ee kvalita efektov na GeForce GTX a GeForce RTX by mala by\u0165 rovnak\u00e1.<\/p>\n

Testovacia zostava, met\u00f3da testovania<\/strong><\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Testovac\u00ed st\u00e1nok<\/th>\n<\/tr>\n
CPU<\/td>\nIntel Core i9-9900K (4,9 GHz, 4,8 GHz v AVX, pevn\u00e1 frekvencia)<\/td>\n<\/tr>\n
Z\u00e1kladn\u00e1 doska<\/td>\nASUS MAXIMUS XI APEX<\/td>\n<\/tr>\n
Opera\u010dn\u00e1 pam\u00e4\u0165<\/td>\nG.Skill Trident Z RGB F4-3200C14D-16GTZR, 2 x 8 GB (3200 MHz, CL14)<\/td>\n<\/tr>\n
Pevn\u00fd disk<\/td>\nIntel SSD 760p, 1024 GB<\/td>\n<\/tr>\n
Nap\u00e1jac\u00ed zdroj<\/td>\nCorsair AX1200i, 1200 W<\/td>\n<\/tr>\n
Chladi\u010d CPU<\/td>\nCorsair Hydro Series H115i<\/td>\n<\/tr>\n
Kryt<\/td>\nCoolerMaster Test Bench V1.0<\/td>\n<\/tr>\n
Monitor<\/td>\nNEC EA244UHD<\/td>\n<\/tr>\n
Opera\u010dn\u00fd syst\u00e9m<\/td>\nWindows 10 Pro x64<\/td>\n<\/tr>\n
Softv\u00e9r pre GPU NVIDIA<\/td>\n<\/tr>\n
NVIDIA GeForce RTX 20<\/td>\nNVIDIA GeForce Game Ready Driver 419.67<\/td>\n<\/tr>\n
NVIDIA GeForce GTX 10\/16<\/td>\nNVIDIA GeForce Game Ready Driver 425.31<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n\n\n\n\n\n
Hern\u00e9 testy<\/th>\n<\/tr>\n
Hra<\/td>\nAPI<\/td>\nNastavenia, met\u00f3da testovania<\/td>\nCelohalov\u00fd vyhladzova\u010d<\/td>\n<\/tr>\n
1920 \u00d7 1080 \/ 2560 \u00d7 1440<\/td>\n3840 \u00d7 2160<\/td>\n<\/tr>\n
Battlefield V<\/td>\nDirectX 12<\/td>\nOCAT, misia Liberte. Max. kvalita grafiky<\/td>\nTAA High<\/td>\nTAA High<\/td>\n<\/tr>\n
Metro Exodus.<\/td>\nDirectX 12<\/td>\nZabudovan\u00fd benchmark. Profil kvality grafiky Ultra<\/td>\nTAA<\/td>\nTAA<\/td>\n<\/tr>\n
Shadow of the Tomb Raider<\/td>\nDirectX 12<\/td>\nZabudovan\u00fd benchmark. Max. kvalita grafiky<\/td>\nSMAA 4x<\/td>\nVyp.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Hodnoty priemernej a minim\u00e1lnej sn\u00edmacej frekvencie s\u00fa odvoden\u00e9 z po\u013ea \u010dasu rendrovania jednotliv\u00fdch sn\u00edmok, ktor\u00fd zaznamen\u00e1va zabudovan\u00fd benchmark (Metro Exodus, Shadow of the Tomb Raider) alebo utilita OCAT, ak t\u00e1to nie je k dispoz\u00edcii (Battlefield V).<\/p>\n

Priemern\u00e1 sn\u00edmacia frekvencia na grafoch je prevr\u00e1ten\u00e1 hodnota priemern\u00e9ho \u010dasu sn\u00edmky. Na hodnotenie minim\u00e1lnej sn\u00edmacej frekvencie sa po\u010d\u00edta po\u010det sn\u00edmok vytvoren\u00fdch za ka\u017ed\u00fa sekundu testu. Z tohto po\u013ea \u010d\u00edsel sa vyberie hodnota zodpovedaj\u00faca 1. percentilu rozdelenia.<\/p>\n

\u00da\u010dastn\u00edci testovania<\/strong><\/p>\n

V testovan\u00ed v\u00fdkonnosti sa z\u00fa\u010dastnili nasleduj\u00face grafick\u00e9 karty:<\/p>\n