Comparison of Radeon HD 7870 and GeForce GTX 775M Mac

Attribute	Radeon HD 7870 ×	GeForce GTX 775M Mac ×
GPU
Release year (year)	2012	2013
GPU brand	AMD	Nvidia
GPU name	Pitcairn XT	GK104
Market	Desktop	Laptop
Clock speed (MHz)	1,000	797
Is dual GPU	-	-
Model	Radeon HD 7870	GeForce GTX 775M Mac
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	153.6	160
Memory bus (bit)	256	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,200	1,250
Effective memory clock speed (MHz)	4,800	5,000
Noise and power
TDP (W)	175	100
Load power consumption (W)	295	-
Idle power consumption (W)	108	-
Load noise level (dB)	48.8	-
Idle noise level (dB)	39.5	-
Raw performance
Pixel rate (GPixel/s)	32	22.32
Render output processors	32	32
Texture mapping units	80	112
Shading units	1,280	1,344
Floating-point performance (GFLOPS)	2,560	2,142
Compute units	20	-
Texture rate (GTexel/s)	80	89.3
Benchmarks
Particle simulation (mInteraction/s)	-	280.4
T-Rex (Compubench 1.5) (frames/s)	-	3.11
Video composition (frames/s)	-	56.67
Crysis 3	25.8	-
Battlefield 4	43	-
Face detection (mPixels/s)	55.45	30.36
T-Rex (GFXBench 3.0)	3352.76	3357.2
Manhattan (GFXBench 3.0)	3714.8	3716.26
Bitcoin mining (mHash/s)	294.21	66.6
Sky Diver Factor	324.89	-
Fire Strike Factor	50.19	-
Ocean surface simulation (frames/s)	-	1075.94