Comparison of GeForce GT 640M LE and Radeon HD 7670M

Attribute	GeForce GT 640M LE ×	Radeon HD 7670M ×
GPU
Release year (year)	2012	2012
Reference card	Nvidia GeForce GT 640M LE 500 MHz 1 GB	AMD Radeon HD 7670M 600 MHz 1 GB
GPU brand	Nvidia	AMD
GPU name	GK107	Thames
Market	Laptop	Laptop
Clock speed (MHz)	500	600
Is dual GPU	-	-
Model	GeForce GT 640M LE	Radeon HD 7670M
Memory
Memory (MB)	1,024	1,024
Memory bandwidth (GB/s)	64	57.6
Memory bus (bit)	128	128
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)	20	20
Raw performance
Pixel rate (GPixel/s)	4	9.6
Render output processors	16	16
Texture mapping units	32	24
Shading units	384	480
Floating-point performance (GFLOPS)	384	576
Compute units	-	6
Texture rate (GTexel/s)	16	14.4
Benchmarks
Battlefield 3	8.9	7.1
Dirt3	16.8	-
Crysis 2	-	10.4
Face detection (mPixels/s)	6.49	2.47
T-Rex (GFXBench 3.0)	2181.42	1803.68
Manhattan (GFXBench 3.0)	1573.09	1737.63
Bitcoin mining (mHash/s)	13.95	-
Sky Diver Factor	89.49	71.57
Fire Strike Factor	14.11	8.03
Ocean surface simulation (frames/s)	-	210.9