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GPU Comparison
NVIDIA GeForce RTX 4080 12 GB vs NVIDIA GeForce GT 640 OEM
NVIDIA GeForce RTX 4080 12 GB vs NVIDIA GeForce GT 640 OEM
VS
NVIDIA GeForce RTX 4080 12 GB
NVIDIA GeForce GT 640 OEM
We compared two Desktop platform GPUs: 12GB VRAM GeForce RTX 4080 12 GB and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce RTX 4080 12 GB 's Advantages
Boost Clock2610MHz
More VRAM (12GB vs 2GB)
Larger VRAM bandwidth (504.2GB/s vs 28.51GB/s)
7296 additional rendering cores
NVIDIA GeForce GT 640 OEM 's Advantages
Lower TDP (50W vs 285W)
Score
Benchmark
FP32 (float)
GeForce RTX 4080 12 GB
+6450%
40.09 TFLOPS
GeForce GT 640 OEM
0.612 TFLOPS
GeForce RTX 4080 12 GB
VS
GeForce GT 640 OEM
Graphics Card
Unknown
Release Date
Apr 2012
GeForce 40
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 4.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
2310 MHz
Base Clock
-
2610 MHz
Boost Clock
-
1313 MHz
Memory Clock
891 MHz
Memory
12GB
Memory Size
2GB
GDDR6X
Memory Type
DDR3
192bit
Memory Bus
128bit
504.2GB/s
Bandwidth
28.51GB/s
Render Config
60
SM Count
-
-
Compute Units
-
7680
Shading Units
384
240
TMUs
32
80
ROPs
16
240
Tensor Cores
-
60
RT Cores
-
128 KB (per SM)
L1 Cache
16 KB (per SMX)
48 MB
L2 Cache
256 KB
Theoretical Performance
208.8 GPixel/s
Pixel Rate
6.376 GPixel/s
626.4 GTexel/s
Texture Rate
25.50 GTexel/s
40.09 TFLOPS
FP16 (half)
-
40.09 TFLOPS
FP32 (float)
612.1 GFLOPS
626.4 GFLOPS
FP64 (double)
25.50 GFLOPS
Graphics Processor
AD104
GPU Name
GK107
AD104-400-A1
GPU Variant
GK107-320-A2
Ada Lovelace
Architecture
Kepler
TSMC
Foundry
TSMC
4 nm
Process Size
28 nm
35.8 billion
Transistors
1.27 billion
295 mm²
Die Size
118 mm²
Board Design
285W
TDP
50W
600 W
Suggested PSU
250 W
1x HDMI 2.1 3x DisplayPort 1.4a
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 16-pin
Power Connectors
None
Graphics Features
12 Ultimate (12_2)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
8.9
CUDA
3.0
6.6
Shader Model
5.1
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6
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10
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