Comparison of Radeon R9 M270X and GeForce GTX 775M Mac

Attribute	Radeon R9 M270X ×	GeForce GTX 775M Mac ×
GPU
Release year (year)	2015	2013
Reference card	AMD Radeon R9 M270X 725 MHz 2 GB	-
GPU brand	AMD	Nvidia
GPU name	Saturn	GK104
Market	Laptop	Laptop
Clock speed (MHz)	900	797
Turbo clock speed (MHz)	1,000	-
Is dual GPU	-	-
Model	Radeon R9 M270X	GeForce GTX 775M Mac
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	88	160
Memory bus (bit)	128	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,375	1,250
Effective memory clock speed (MHz)	5,500	5,000
Noise and power
TDP (W)	-	100
Raw performance
Pixel rate (GPixel/s)	16	22.32
Render output processors	16	32
Texture mapping units	48	112
Shading units	768	1,344
Floating-point performance (GFLOPS)	1,536	2,142
Compute units	12	-
Texture rate (GTexel/s)	48	89.3
Benchmarks
Particle simulation (mInteraction/s)	377.8	280.4
T-Rex (Compubench 1.5) (frames/s)	6.37	3.11
Video composition (frames/s)	85.21	56.67
Face detection (mPixels/s)	63.98	30.36
T-Rex (GFXBench 3.0)	3361.82	3357.2
Manhattan (GFXBench 3.0)	3717.76	3716.26
Bitcoin mining (mHash/s)	314.57	66.6
Ocean surface simulation (frames/s)	1314.72	1075.94