Recall due to the limitations of architecture GPU GM204 maximum
speed memory access is possible only to a segment of 3.5 GB capacity , although the full range of on-board memory is 4 GB GDDR5.
Speed?of access to the remaining 512 MB segment is about seven times smaller than the main segment. With the combination of certain conditions performance of the adapter may be reduced. The company did not clarify this before the official announcement of the GeForce GTX 970 and hid it by intentional or unintentional falsification specifications, as well as does not plan to fix the problem by updating the driver (which is very likely, impossible).
In the site Geeks3D.com there was a note in which the author on the basis of a small, self-written utilities on OpenGL tries to prove that at the same time GeForce GTX 970 can use all the onboard memory. Thus, the author wonders why many testers do not pay enough attention to the work of GeForce GTX 970 with support for OpenGL?
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