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GPU Comparison
NVIDIA T400 vs NVIDIA GeForce GT 645 OEM
NVIDIA T400 vs NVIDIA GeForce GT 645 OEM
VS
NVIDIA T400
NVIDIA GeForce GT 645 OEM
We compared two Desktop platform GPUs: 2GB VRAM T400 and 1024MB VRAM GeForce GT 645 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA T400 's Advantages
Released 9 years and 1 months late
Boost Clock1425MHz
More VRAM (2GB vs 1GB)
96 additional rendering cores
Lower TDP (30W vs 102W)
NVIDIA GeForce GT 645 OEM 's Advantages
Larger VRAM bandwidth (91.87GB/s vs 80.00GB/s)
Score
Benchmark
FP32 (float)
T400
+22%
1.094 TFLOPS
GeForce GT 645 OEM
0.894 TFLOPS
T400
VS
GeForce GT 645 OEM
Graphics Card
May 2021
Release Date
Apr 2012
Quadro
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
420 MHz
Base Clock
-
1425 MHz
Boost Clock
-
1250 MHz
Memory Clock
957 MHz
Memory
2GB
Memory Size
1024MB
GDDR6
Memory Type
GDDR5
64bit
Memory Bus
192bit
80.00GB/s
Bandwidth
91.87GB/s
Render Config
6
SM Count
6
-
Compute Units
-
384
Shading Units
288
24
TMUs
48
16
ROPs
24
-
Tensor Cores
-
-
RT Cores
-
64 KB (per SM)
L1 Cache
64 KB (per SM)
1024 KB
L2 Cache
384 KB
Theoretical Performance
22.80 GPixel/s
Pixel Rate
9.312 GPixel/s
34.20 GTexel/s
Texture Rate
37.25 GTexel/s
2.189 TFLOPS
FP16 (half)
-
1094 GFLOPS
FP32 (float)
894.0 GFLOPS
34.20 GFLOPS
FP64 (double)
74.50 GFLOPS
Graphics Processor
TU117
GPU Name
GF114
-
GPU Variant
-
Turing
Architecture
Fermi 2.0
TSMC
Foundry
TSMC
12 nm
Process Size
40 nm
4.7 billion
Transistors
1.95 billion
200 mm²
Die Size
332 mm²
Board Design
30W
TDP
102W
200 W
Suggested PSU
300 W
3x mini-DisplayPort 1.4a
Outputs
2x DVI 1x mini-HDMI 1.3a
None
Power Connectors
-
Graphics Features
12 (12_1)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
1.1
1.3
Vulkan
N/A
7.5
CUDA
2.1
6.6
Shader Model
5.1
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7
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8
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9
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10
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