ʻOiai i ka wā o ka hoʻolaha ʻana o nā kāleka wikiō GeForce RTX 20 mua, ua manaʻo ka poʻe he nui nā Turing GPU i kā lākou mau liʻiliʻi liʻiliʻi i ke alo o nā ʻāpana hou: RT cores a me tensor cores. I kēia manawa, ua loiloi kekahi mea hoʻohana Reddit i nā kiʻi infrared o ka Turing TU106 a me TU116 GPU a ua hoʻoholo ʻaʻole lawe nā ʻāpana computing hou e like me ka mea i manaʻo mua ʻia.
I ka hoʻomaka ʻana, e hoʻomanaʻo mākou ʻo ka Turing TU106 GPU ka ʻōpio a ʻoi loa ka puʻupuʻu NVIDIA puʻupuʻu me nā cores RT kūikawā no ka ray tracing a me nā cores tensor no ka wikiwiki ʻana i nā hana naʻauao. I ka huli ʻana, ua hoʻonele ʻia ka ʻōnaehana kiʻi Turing TU116, e pili ana iā ia, i kēia mau ʻāpana kamepiula kūikawā a ʻo ia ke kumu i hoʻoholo ai e hoʻohālikelike iā lākou.
Hoʻokaʻawale ʻia nā NVIDIA Turing GPU i nā ʻāpana TPC, kahi i loaʻa i kahi pālua o nā streaming multiprocessors (Streaming Multiprocessors), kahi i hoʻokomo i nā cores computing āpau. A e like me ka mea i ʻike ʻia, ʻo ka Turing TU106 GPU he 1,95 mm² ka nui o ka TPC ma mua o ka Turing TU116, a i ʻole 22%. No kēia wahi, ʻo 1,25 mm² no nā cores tensor, a ʻo 0,7 mm² wale nō no nā cores RT.
ʻIke ʻia me ka ʻole o ka tensor hou a me ka RT cores, ʻo ka mea hoʻohana kiʻi kiʻi ʻo Turing TU102, ka mea i lalo o ka GeForce RTX 2080 Ti, ʻaʻole e noho i 754 mm², akā 684 mm² (36 TPC). Ma ka huli ʻana, hiki i ka Turing TU104, ʻo ia ke kumu o ka GeForce RTX 2080, hiki ke noho i 498 mm² ma kahi o 545 mm² (24 TPC). E like me kāu e ʻike ai, ʻoiai me ka ʻole o nā cores tensor a me RT, ʻoi aku ka nui o nā Turing GPU kahiko. ʻOi aku ka nui o nā Pascal GPU.
No laila he aha ke kumu o ia nui nui? No ka hoʻomaka ʻana, ua loaʻa i nā Turing GPU ka nui o ka cache nui. Ua hoʻonui ʻia ka nui o nā shaders, a ʻoi aku ka nui o nā ʻōkuhi Turing a me nā papa inoa nui. ʻO kēia mau mea i hiki ke hoʻonui nui ʻaʻole wale i ka wahi, akā i ka hana o Turing GPU. No ka laʻana, ʻo ka GeForce RTX 2060 like ma TU106 e hāʻawi kokoke i ka pae like o ka hana e like me ka GeForce GTX 1080 e pili ana i GP104. ʻO ka hope, ma ke ala, he 25% ka nui o nā cores CUDA, ʻoiai e noho ana ia i kahi o 314 mm2 versus 410 mm2 no ka TU106 hou.
Source: 3dnews.ru