Comparison of Radeon HD 7950 and Radeon R9 M390X

Attribute	Radeon HD 7950 ×	Radeon R9 M390X ×
GPU
Release year (year)	2012	2015
GPU brand	AMD	AMD
GPU name	Tahiti PRO	Amethyst
Market	Desktop	Laptop
Clock speed (MHz)	800	723
Turbo clock speed (MHz)	-	950
Is dual GPU	-	-
Model	Radeon HD 7950	Radeon R9 M390X
Memory
Memory (MB)	3,072	4,096
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
Load power consumption (W)	321	-
Idle power consumption (W)	112	-
Load noise level (dB)	53.1	-
Idle noise level (dB)	40.7	-
Raw performance
Pixel rate (GPixel/s)	25.6	23.14
Render output processors	32	32
Texture mapping units	112	128
Shading units	1,792	2,048
Floating-point performance (GFLOPS)	2,867	2,961
Compute units	28	32
Texture rate (GTexel/s)	89.6	92.5
Benchmarks
Crysis 3	45	-
Cloud Gate Factor	-	23.65
Battlefield 4	33.5	63.65
Face detection (mPixels/s)	77.81	44.39
T-Rex (GFXBench 3.0)	3359.66	3356.44
Manhattan (GFXBench 3.0)	3712.14	3384.91
Bitcoin mining (mHash/s)	382.11	241.5
Sky Diver Factor	355.06	317.44
Thief	-	35
Fire Strike Factor	57.91	-