GTX 970 記憶體疑似只吃得到 3.5GB (官方回應) - 3C

NVIDIA Responds to GTX 970 3.5GB Memory Issue | PC Perspective
http://goo.gl/u8ZxN6

以下原文新聞稿, 中文有請翻譯蒟蒻

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The GeForce GTX 970 is equipped with 4GB of dedicated graphics memory.
However the 970 has a different configuration of SMs than the 980, and fewer
crossbar resources to the memory system. To optimally manage memory traffic
in this configuration, we segment graphics memory into a 3.5GB section and a
0.5GB section. The GPU has higher priority access to the 3.5GB section.
When a game needs less than 3.5GB of video memory per draw command then it
will only access the first partition, and 3rd party applications that measure
memory usage will report 3.5GB of memory in use on GTX 970, but may report
more for GTX 980 if there is more memory used by other commands. When a game
requires more than 3.5GB of memory then we use both segments.

We understand there have been some questions about how the GTX 970 will
perform when it accesses the 0.5GB memory segment. The best way to test that
is to look at game performance. Compare a GTX 980 to a 970 on a game that
uses less than 3.5GB. Then turn up the settings so the game needs more than
3.5GB and compare 980 and 970 performance again.

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官方回應出來了
簡單來說就是他們的硬體設計執意如此

"It's by design, not a bug"

雖然他們自己說實際上在存取最後0.5GB的效能遞減並不嚴重
但是實際上真的會把4GB都塞到炸掉的人應該也大都不是普通人了...
到底最後大家買不買帳就(ry

#ramgate

edit: 將來源網址縮址 :P
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