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/ Comparison of Radeon R9 285 and GeForce GTX 775M Mac
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Comparison of Radeon R9 285 and GeForce GTX 775M Mac
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Attribute
Radeon R9 285
×
GeForce GTX 775M Mac
×
GPU
Release year (year)
2014
2013
Reference card
AMD Radeon R9 285 918 MHz 2 GB
-
GPU brand
AMD
Nvidia
GPU name
Tonga
GK104
Market
Desktop
Laptop
Clock speed (MHz)
918
797
Turbo clock speed (MHz)
1,000
-
Is dual GPU
-
-
Model
Radeon R9 285
GeForce GTX 775M Mac
Memory
Memory (MB)
2,048
2,048
Memory bandwidth (GB/s)
176
160
Memory bus (bit)
256
256
1
↑
Memory type
GDDR5
GDDR5
Memory clock speed (MHz)
1,375
1,250
Effective memory clock speed (MHz)
5,500
5,000
Noise and power
TDP (W)
190
100
Raw performance
Pixel rate (GPixel/s)
29.38
22.32
Render output processors
32
32
Texture mapping units
112
112
Shading units
1,792
1,344
Floating-point performance (GFLOPS)
3,290
2,142
Compute units
28
-
Texture rate (GTexel/s)
102.8
89.3
Benchmarks
FarCry 3
35
-
Particle simulation (mInteraction/s)
-
280.4
T-Rex (Compubench 1.5) (frames/s)
-
3.11
Video composition (frames/s)
-
56.67
Face detection (mPixels/s)
72.8
30.36
T-Rex (GFXBench 3.0)
3355.84
3357.2
Manhattan (GFXBench 3.0)
3715.04
3716.26
Bitcoin mining (mHash/s)
391.4
66.6
Sky Diver Factor
344.37
-
Fire Strike Factor
50.84
-
Ocean surface simulation (frames/s)
1474.63
1075.94
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