NVIDIA Tells Apple to "Prove It" on A5X Performance Claims
March 8, 2012 10:23 AM
comment(s) - last by
Benchmarks or GTFO!
Yesterday when Apple
the new iPad, the crew from Cupertino took some time to brag about its new A5X processor in comparison to NVIDIA’s Tegra 3. Apple certainly isn't widely known for offering up benchmarks on its own, so we'll likely have to wait until iPads land in the hands of reviewers and geeks around the web.
Apple used the iPad unveiling to boast that the A5X chip inside the new iPad is two times faster than A5, and four times more powerful in graphics performance than the Tegra 3.
NVIDIA isn't buying those claims without proof. The graphics company wants to know how Apple came by that number. Ken Brown, a spokesman for NVIDIA, stated, "[It was] certainly flattering " for Apple to compare its newest chip to their part.
Brown continued, “We don’t have the benchmark information. We have to understand what the application was that was used. Was it one or a variety of applications? What drivers were used? There are so many issues to get into with benchmark.”
Anyone that follows tech knows benchmarks are often handpicked to favor one particular brand over another when it comes to claims such as these. So it should be interesting to see if the new iPad’s performance lives up to the claims.
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RE: Performance at which resolution?
3/8/2012 1:07:36 PM
It's not a 1:1 relationship, though. There might be 4x the pixels, but the polycount, for example, hasn't changed.
As an example, compare these two results for the same card from Crysis: Warhead from the latest Anandtech GPU review:
1920x1200 (2.3MP): 47.7 FPS
2560x1600 (4.1MP): 31.1 FPS
That's a ~180% increase in resolution, so we should expect ~26 FPS, but instead we see ~31FPS.
RE: Performance at which resolution?
3/9/2012 8:57:33 AM
Yes on a videocard with over 100GB/s of memory bandwidth!
Tablets have around 4-6GB/s of shared memory bandwidth. At that point the increased resolution will matter even more.
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