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/ Comparison of Radeon HD 7870 and Radeon R9 270
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Comparison of Radeon HD 7870 and Radeon R9 270
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Attribute
Radeon HD 7870
×
Radeon R9 270
×
GPU
Release year (year)
2012
2013
GPU brand
AMD
AMD
GPU name
Pitcairn XT
Curacao
Market
Desktop
Desktop
Clock speed (MHz)
1,000
900
Turbo clock speed (MHz)
-
925
Is dual GPU
-
-
Model
Radeon HD 7870
Radeon R9 270
Memory
Memory (MB)
2,048
2,048
Memory bandwidth (GB/s)
153.6
179.2
Memory bus (bit)
256
256
1
↑
Memory type
GDDR5
GDDR5
Memory clock speed (MHz)
1,200
1,400
Effective memory clock speed (MHz)
4,800
5,600
Noise and power
TDP (W)
175
150
Load power consumption (W)
295
-
Idle power consumption (W)
108
-
Load noise level (dB)
48.8
-
Idle noise level (dB)
39.5
-
Raw performance
Pixel rate (GPixel/s)
32
29.6
Render output processors
32
32
Texture mapping units
80
80
Shading units
1,280
1,280
Floating-point performance (GFLOPS)
2,560
2,368
Compute units
20
20
Texture rate (GTexel/s)
80
74
Benchmarks
Crysis 3
25.8
74
Battlefield 4
43
65
Face detection (mPixels/s)
55.45
57.24
T-Rex (GFXBench 3.0)
3352.76
3359.76
Manhattan (GFXBench 3.0)
3714.8
3717.7
Bitcoin mining (mHash/s)
294.21
251.26
Sky Diver Factor
324.89
312.65
Fire Strike Factor
50.19
49.6
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