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GPU Comparison
NVIDIA GeForce 9400 GT Rev. 3 vs NVIDIA GeForce GT 640
NVIDIA GeForce 9400 GT Rev. 3 vs NVIDIA GeForce GT 640
VS
NVIDIA GeForce 9400 GT Rev. 3
NVIDIA GeForce GT 640
We compared two Desktop platform GPUs: 128MB VRAM GeForce 9400 GT Rev. 3 and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 9400 GT Rev. 3 's Advantages
Lower TDP (50W vs 65W)
NVIDIA GeForce GT 640 's Advantages
Larger VRAM bandwidth (28.51GB/s vs 9.600GB/s)
368 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 9400 GT Rev. 3
0.045 TFLOPS
GeForce GT 640
+1440%
0.693 TFLOPS
GeForce 9400 GT Rev. 3
VS
GeForce GT 640
Graphics Card
Jun 2012
Release Date
Jun 2012
GeForce 9
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
600 MHz
Memory Clock
891 MHz
Memory
128MB
Memory Size
2GB
DDR2
Memory Type
DDR3
64bit
Memory Bus
128bit
9.600GB/s
Bandwidth
28.51GB/s
Render Config
2
SM Count
-
-
Compute Units
-
16
Shading Units
384
8
TMUs
32
4
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
-
L1 Cache
16 KB (per SMX)
32 KB
L2 Cache
256 KB
Theoretical Performance
2.356 GPixel/s
Pixel Rate
7.216 GPixel/s
4.712 GTexel/s
Texture Rate
28.86 GTexel/s
-
FP16 (half)
-
44.86 GFLOPS
FP32 (float)
692.7 GFLOPS
-
FP64 (double)
28.86 GFLOPS
Graphics Processor
GT218
GPU Name
GK107
GT218-670-B1
GPU Variant
GK107-300-A2
Tesla 2.0
Architecture
Kepler
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
0.26 billion
Transistors
1.27 billion
57 mm²
Die Size
118 mm²
Board Design
50W
TDP
65W
250 W
Suggested PSU
250 W
1x DVI 1x VGA 1x S-Video
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
None
Power Connectors
None
Graphics Features
11.1 (10_1)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.1
1.2
CUDA
3.0
4.1
Shader Model
5.1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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