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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
1
↑
TDP (W)
100
190
Raw performance
Pixel rate (GPixel/s)
22.32
29.38
Render output processors
32
32
Texture mapping units
112
112
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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