Comparison of Radeon R9 255 and Radeon R7 450

Attribute	Radeon R9 255 ×	Radeon R7 450 ×
GPU
Release year (year)	2013	2016
GPU brand	AMD	AMD
GPU name	Cape Verde	Cape Verde
Market	Desktop	-
Clock speed (MHz)	900	925
Turbo clock speed (MHz)	930	-
Is dual GPU	-	-
Model	Radeon R9 255	Radeon R7 450
Memory
Memory (MB)	2,048	2,048
Memory bandwidth (GB/s)	73.6	72
Memory bus (bit)	128	128
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,150	1,125
Effective memory clock speed (MHz)	4,600	4,500
Noise and power
TDP (W)	65	65
Raw performance
Pixel rate (GPixel/s)	14.88	14.8
Render output processors	16	16
Texture mapping units	32	32
Shading units	512	512
Floating-point performance (GFLOPS)	952	947
Compute units	8	8
Texture rate (GTexel/s)	29.76	29.6
Benchmarks
Particle simulation (mInteraction/s)	-	268.82
T-Rex (Compubench 1.5) (frames/s)	-	2.62
Video composition (frames/s)	-	41.41
PassMark	1,765	2,155
PassMark Direct Compute	1,142	1,616
Cloud Gate Factor	14.43	-
Face detection (mPixels/s)	-	24.79
Bitcoin mining (mHash/s)	-	112.35
Sky Diver Factor	189.14	-
Fire Strike Factor	18.88	-
Ocean surface simulation (frames/s)	-	638.2