Link: http://hardocp.com/article/2012/03/01/xfx_radeon_hd_7950_black_edition_video_card_review/8
HardOCP has done a review of the XFX 7950 Black edition, and what's most interesting about it is it allows some direct comparisons of the 7950 and 7970 at almost equal clocks.
(1) 7950 at 900/1375
(2) 7970 at 925/1375
Comparison in four games:
(1) Arkham City: 3%
(2) Skyrim: 6%
(3) BF3: 4%
(4) Deus Ex: 14%
Average: 7%
Given that just the slight core clock difference could account for almost 3% of that, you're talking about very limited gains from the 14% more cores, which is not that different from the 6970 over 6950, which had a theoretical 9% shader advantage and an actual advantage of ~3%.
This could actually bode well for the 7870, with its 1408 cores at 950MHz. With roughly 75% of the cores and ROPs, 75% of the bandwidth, and a ~20% higher clock, it could actually come within striking distance of the 7950!
Also, for all you OCers out there, HardOCP puts up some serious OC numbers for the 7950 (1195/1700). Just one graph to give you an idea:
HardOCP has done a review of the XFX 7950 Black edition, and what's most interesting about it is it allows some direct comparisons of the 7950 and 7970 at almost equal clocks.
(1) 7950 at 900/1375
(2) 7970 at 925/1375
Comparison in four games:
(1) Arkham City: 3%
(2) Skyrim: 6%
(3) BF3: 4%
(4) Deus Ex: 14%
Average: 7%
Given that just the slight core clock difference could account for almost 3% of that, you're talking about very limited gains from the 14% more cores, which is not that different from the 6970 over 6950, which had a theoretical 9% shader advantage and an actual advantage of ~3%.
This could actually bode well for the 7870, with its 1408 cores at 950MHz. With roughly 75% of the cores and ROPs, 75% of the bandwidth, and a ~20% higher clock, it could actually come within striking distance of the 7950!
Also, for all you OCers out there, HardOCP puts up some serious OC numbers for the 7950 (1195/1700). Just one graph to give you an idea:
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