Comparison of Radeon HD 6990M and GeForce GTX 460 X2

Attribute	Radeon HD 6990M ×	GeForce GTX 460 X2 ×
GPU
Release year (year)	2011	2011
GPU brand	AMD	Nvidia
GPU name	Blackcomb	GF104
Market	Laptop	Desktop
Clock speed (MHz)	715	701
Is dual GPU	-	+
Model	Radeon HD 6990M	GeForce GTX 460 X2
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	115.2	230.4
Memory bus (bit)	256	512
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	900	900
Effective memory clock speed (MHz)	3,600	3,600
Noise and power
TDP (W)	100	160
Raw performance
Pixel rate (GPixel/s)	22.88	19.62
Render output processors	32	64
Texture mapping units	56	112
Shading units	1,120	672
Floating-point performance (GFLOPS)	1,602	1,883
Compute units	14	-
Texture rate (GTexel/s)	40	78.6
Benchmarks
Battlefield 3	21.9	-
Dirt3	39.4	-
Crysis 2	35	-