Comparison of Radeon HD 7870 XT and Radeon R9 280X

Attribute	Radeon HD 7870 XT ×	Radeon R9 280X ×
GPU
Release year (year)	2012	2013
Reference card	-	AMD Radeon R9 280X 850 MHz 3 GB
GPU brand	AMD	AMD
GPU name	Tahiti LE	Tahiti
Market	Desktop	Desktop
Clock speed (MHz)	925	850
Turbo clock speed (MHz)	975	1,000
Is dual GPU	-	-
Model	Radeon HD 7870 XT	Radeon R9 280X
Memory
Memory (MB)	2,048	3,072
Memory bandwidth (GB/s)	192	288
Memory bus (bit)	256	384
Memory type	GDDR5	GDDR5
Memory clock speed (MHz)	1,500	1,500
Effective memory clock speed (MHz)	6,000	6,000
Noise and power
TDP (W)	185	250
Raw performance
Pixel rate (GPixel/s)	31.2	32
Render output processors	32	32
Texture mapping units	96	128
Shading units	1,536	2,048
Floating-point performance (GFLOPS)	2,995	4,096
Compute units	24	32
Texture rate (GTexel/s)	93.6	128
Benchmarks
Metro: Last Light	79.5	-
Battlefield 3	72	-
Battlefield 4	-	39.9
Face detection (mPixels/s)	65.4	95.62
T-Rex (GFXBench 3.0)	3350.68	3356.04
Manhattan (GFXBench 3.0)	3705.76	3709.16
Bitcoin mining (mHash/s)	345.79	468.39
Sky Diver Factor	314	380.99
^1↑Thief	-	33.6
Fire Strike Factor	47.56	62.73