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