Comparison of Radeon R9 M295X Mac and Radeon HD 5970 Protoype A1

Attribute	Radeon HD 5970 Protoype A1 ×	Radeon R9 M295X Mac ×
GPU
Release year (year)	2009	2014
Reference card	ATi Radeon HD 5970 725 MHz 2 GB	-
GPU brand	ATI	AMD
GPU name	Hemlock	Amethyst
Market	Desktop	Laptop
Clock speed (MHz)	725	850
Is dual GPU	+	-
Model	Radeon HD 5970 Protoype A1	Radeon R9 M295X Mac
Memory
Memory (MB)	2,048	4,096
Memory bandwidth (GB/s)	256	174.3
Memory bus (bit)	512	256
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,000	1,362
Effective memory clock speed (MHz)	4,000	5,448
Noise and power
TDP (W)	294	250
Load power consumption (W)	439	-
Idle power consumption (W)	138	-
Load noise level (dB)	58.9	-
Idle noise level (dB)	42.8	-
Raw performance
Pixel rate (GPixel/s)	46.4	27.2
Render output processors	64	32
Texture mapping units	160	128
Shading units	3,200	2,048
Floating-point performance (GFLOPS)	4,640	3,482
Compute units	40	32
Texture rate (GTexel/s)	116	108.8
Benchmarks
Particle simulation (mInteraction/s)	-	409.67
T-Rex (Compubench 1.5) (frames/s)	-	5.84
Video composition (frames/s)	-	75.35
PassMark	2,599	5,101
Battleforge (fps)	93.3	-
Hawx (fps)	155	-
Cloud Gate Factor	19.66	-
Face detection (mPixels/s)	-	71.78
T-Rex (GFXBench 3.0)	3213.45	3356.8
Manhattan (GFXBench 3.0)	3454.16	-
Bitcoin mining (mHash/s)	-	321.77
Sky Diver Factor	229.17	-
Fire Strike Factor	33.32	-
Ocean surface simulation (frames/s)	-	1285.14