Comparison of Radeon R9 280 and GeForce GTX 775M Mac

Attribute	Radeon R9 280 ×	GeForce GTX 775M Mac ×
GPU
Release year (year)	2014	2013
GPU brand	AMD	Nvidia
GPU name	Tahiti	GK104
Market	Desktop	Laptop
Clock speed (MHz)	827	797
Turbo clock speed (MHz)	933	-
Is dual GPU	-	-
Model	Radeon R9 280	GeForce GTX 775M Mac
Memory
Memory (MB)	3,072	2,048
Memory bandwidth (GB/s)	240	160
Memory bus (bit)	384	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,250	1,250
Effective memory clock speed (MHz)	5,000	5,000
Noise and power
TDP (W)	200	100
Raw performance
Pixel rate (GPixel/s)	29.86	22.32
Render output processors	32	32
Texture mapping units	112	112
Shading units	1,792	1,344
Floating-point performance (GFLOPS)	3,344	2,142
Compute units	28	-
Texture rate (GTexel/s)	104.5	89.3
Benchmarks
Particle simulation (mInteraction/s)	-	280.4
T-Rex (Compubench 1.5) (frames/s)	-	3.11
Video composition (frames/s)	-	56.67
Dirt3	92	-
Face detection (mPixels/s)	80.47	30.36
T-Rex (GFXBench 3.0)	3356.46	3357.2
Manhattan (GFXBench 3.0)	3713.26	3716.26
Bitcoin mining (mHash/s)	365.38	66.6
Sky Diver Factor	336.33	-
Fire Strike Factor	55.14	-
Ocean surface simulation (frames/s)	1687.03	1075.94