Comparison of Radeon HD 6990M and Radeon HD 7950M

Attribute	Radeon HD 7950M ×	Radeon HD 6990M ×
GPU
Release year (year)	2012	2011
GPU brand	AMD	AMD
GPU name	Wimbledon	Blackcomb
Market	Laptop	Laptop
Clock speed (MHz)	700	715
Is dual GPU	-	-
Model	Radeon HD 7950M	Radeon HD 6990M
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	-	115.2
Memory bus (bit)	256	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,000	900
Effective memory clock speed (MHz)	4,000	3,600
Noise and power
TDP (W)	75	100
Raw performance
Pixel rate (GPixel/s)	22.4	22.88
Render output processors	32	32
Texture mapping units	80	56
Shading units	1,280	1,120
Floating-point performance (GFLOPS)	1,792	1,602
Compute units	20	14
Texture rate (GTexel/s)	56	40
Benchmarks
Battlefield 3	-	21.9
Dirt3	-	39.4
Crysis 2	-	35