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GPU Comparison
AMD Radeon R9 285X vs NVIDIA GeForce GT 640
AMD Radeon R9 285X vs NVIDIA GeForce GT 640
VS
AMD Radeon R9 285X
NVIDIA GeForce GT 640
We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 285X and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 285X 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (264.0GB/s vs 28.51GB/s)
1664 additional rendering cores
NVIDIA GeForce GT 640 's Advantages
Lower TDP (65W vs 200W)
Score
Benchmark
FP32 (float)
Radeon R9 285X
+492%
4.104 TFLOPS
GeForce GT 640
0.693 TFLOPS
Radeon R9 285X
VS
GeForce GT 640
Graphics Card
Unknown
Release Date
Jun 2012
Volcanic Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
1375 MHz
Memory Clock
891 MHz
Memory
3GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
384bit
Memory Bus
128bit
264.0GB/s
Bandwidth
28.51GB/s
Render Config
32
Compute Units
-
-
-
-
2048
Shading Units
384
128
TMUs
32
32
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
768 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
32.06 GPixel/s
Pixel Rate
7.216 GPixel/s
128.3 GTexel/s
Texture Rate
28.86 GTexel/s
-
-
-
4.104 TFLOPS
FP32 (float)
692.7 GFLOPS
-
FP64 (double)
28.86 GFLOPS
Board Design
200W
TDP
65W
550 W
Suggested PSU
250 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 6-pin + 1x 8-pin
Power Connectors
None
Graphics Processor
Tonga
GPU Name
GK107
Tonga XT (215-0851313)
GPU Variant
GK107-300-A2
GCN 3.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5 billion
Transistors
1.27 billion
366 mm²
Die Size
118 mm²
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
6.3
Shader Model
5.1
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