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/ Comparison of AMD Radeon HD 7970 GHz Edition and Radeon R9 285
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Comparison of AMD Radeon HD 7970 GHz Edition and Radeon R9 285
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Attribute
AMD Radeon HD 7970 GHz Edition
×
Radeon R9 285
×
GPU
Release year (year)
2012
2014
Reference card
AMD Radeon HD 7970 925 MHz 3 GB
AMD Radeon R9 285 918 MHz 2 GB
GPU brand
AMD
AMD
GPU name
Tahiti XT2
Tonga
Market
Desktop
Desktop
Clock speed (MHz)
1,000
918
Turbo clock speed (MHz)
1,050
1,000
Is dual GPU
-
-
Model
AMD Radeon HD 7970 GHz Edition
Radeon R9 285
Memory
Memory (MB)
3,072
2,048
Memory bandwidth (GB/s)
288
176
Memory bus (bit)
384
256
1
↑
Memory type
GDDR5
GDDR5
Memory clock speed (MHz)
1,500
1,375
Effective memory clock speed (MHz)
6,000
5,500
Noise and power
TDP (W)
300
190
Load power consumption (W)
360
-
Idle power consumption (W)
112
-
Load noise level (dB)
53.1
-
Idle noise level (dB)
40.2
-
Raw performance
Pixel rate (GPixel/s)
33.6
29.38
Render output processors
32
32
Texture mapping units
128
112
Shading units
2,048
1,792
Floating-point performance (GFLOPS)
4,301
3,290
Compute units
32
28
Texture rate (GTexel/s)
134.4
102.8
Benchmarks
FarCry 3
-
35
Crysis 3
28.3
-
Bioshock Infinite
78
-
Face detection (mPixels/s)
94.02
72.8
T-Rex (GFXBench 3.0)
2798.85
3355.84
Manhattan (GFXBench 3.0)
2984.22
3715.04
Bitcoin mining (mHash/s)
487.62
391.4
Sky Diver Factor
380.04
344.37
Fire Strike Factor
62.9
50.84
Ocean surface simulation (frames/s)
-
1474.63
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