Comparison of Radeon HD 7850 and Radeon HD 7970M

Attribute	Radeon HD 7970M ×	Radeon HD 7850 ×
GPU
Release year (year)	2012	2012
GPU brand	AMD	AMD
GPU name	Wimbledon	Pitcairn PRO
Market	Laptop	Desktop
Clock speed (MHz)	850	860
Is dual GPU	-	-
Model	Radeon HD 7970M	Radeon HD 7850
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	153.6	153.6
Memory bus (bit)	256	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,200	1,200
Effective memory clock speed (MHz)	4,800	4,800
Noise and power
TDP (W)	100	130
Load power consumption (W)	-	271
Idle power consumption (W)	-	107
Load noise level (dB)	-	46.7
Idle noise level (dB)	-	41.5
Raw performance
Pixel rate (GPixel/s)	27.2	27.52
Render output processors	32	32
Texture mapping units	80	64
Shading units	1,280	1,024
Floating-point performance (GFLOPS)	2,176	1,761
Compute units	20	16
Texture rate (GTexel/s)	68	55
Benchmarks
Crysis 3	-	35
Battlefield 4	35.3	-
Face detection (mPixels/s)	51.64	47.04
T-Rex (GFXBench 3.0)	3339.58	3355.2
Manhattan (GFXBench 3.0)	3713.82	3466.99
Bitcoin mining (mHash/s)	257.3	249.48
Sky Diver Factor	271.71	293.45
Thief	33.5	28
Fire Strike Factor	46.48	43.94