AMD Radeon HD 7990 Review: 7990 Gets Official

Synthetics

As always we’ll also take a quick look at synthetic performance, though as a multi-GPU card using a known GPU, there shouldn't be any surprises here. These tests are mostly for comparing cards from within a manufacturer, as opposed to directly comparing AMD and NVIDIA cards. We’ll start with 3DMark Vantage’s Pixel Fill test.

There’s not much to say here. So long as the 7990 isn’t throttling, its ROP/memory performance is almost twice that of the 7970GE, reflecting the fact that the two cards’ clockspeeds are so close.

Moving on, we have our 3DMark Vantage texture fillrate test, which does for texels and texture mapping units what the previous test does for ROPs.

Texture fillrates are the same story as pixel fillrates: the 7990 is an extremely capable card.

 Finally we’ll take a quick look at tessellation performance with TessMark.

And again, we're seeing almost perfect scaling from the 7970GE to the 7990 in our synthetic tests.