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GPU Comparison
NVIDIA GeForce GT 640 vs AMD Radeon R7 250E
NVIDIA GeForce GT 640 vs AMD Radeon R7 250E
VS
NVIDIA GeForce GT 640
AMD Radeon R7 250E
We compared two Desktop platform GPUs: 2GB VRAM GeForce GT 640 and 1024MB VRAM Radeon R7 250E to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 640 's Advantages
More VRAM (2GB vs 1024GB)
AMD Radeon R7 250E 's Advantages
Released 1 years and 6 months late
Larger VRAM bandwidth (72.00GB/s vs 28.51GB/s)
128 additional rendering cores
Lower TDP (55W vs 65W)
Score
Benchmark
FP32 (float)
GeForce GT 640
0.693 TFLOPS
Radeon R7 250E
+18%
0.819 TFLOPS
GeForce GT 640
VS
Radeon R7 250E
Graphics Card
Jun 2012
Release Date
Dec 2013
GeForce 600
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
-
-
-
-
-
891 MHz
Memory Clock
1125 MHz
Memory
2GB
Memory Size
1024MB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
128bit
28.51GB/s
Bandwidth
72.00GB/s
Render Config
-
Compute Units
8
-
-
-
384
Shading Units
512
32
TMUs
32
16
ROPs
16
-
-
-
-
-
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
-
-
-
Theoretical Performance
7.216 GPixel/s
Pixel Rate
12.80 GPixel/s
28.86 GTexel/s
Texture Rate
25.60 GTexel/s
-
-
-
692.7 GFLOPS
FP32 (float)
819.2 GFLOPS
28.86 GFLOPS
FP64 (double)
51.20 GFLOPS
Board Design
65W
TDP
55W
250 W
Suggested PSU
250 W
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
None
Power Connectors
None
Graphics Processor
GK107
GPU Name
Cape Verde
GK107-300-A2
GPU Variant
Cape Verde PRO
Kepler
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.27 billion
Transistors
1.5 billion
118 mm²
Die Size
123 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
1.2
1.1
Vulkan
1.2
3.0
CUDA
-
5.1
Shader Model
5.1
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8
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