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GPU Comparison
NVIDIA GeForce GT 645 OEM vs ATI Radeon X1950 XTX Uber Edition
NVIDIA GeForce GT 645 OEM vs ATI Radeon X1950 XTX Uber Edition
VS
NVIDIA GeForce GT 645 OEM
ATI Radeon X1950 XTX Uber Edition
We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 512MB VRAM Radeon X1950 XTX Uber Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 645 OEM 's Advantages
Released 5 years and 3 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (91.87GB/s vs 67.20GB/s)
288 additional rendering cores
Lower TDP (102W vs 125W)
Score
GeForce GT 645 OEM
VS
Radeon X1950 XTX Uber Edition
Graphics Card
Apr 2012
Release Date
Jan 2007
GeForce 600
Generation
Radeon R500 PCIe
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
957 MHz
Memory Clock
1050 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
GDDR4
192bit
Memory Bus
256bit
91.87GB/s
Bandwidth
67.20GB/s
Render Config
6
SM Count
-
-
Compute Units
-
288
Shading Units
-
48
TMUs
16
24
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
64 KB (per SM)
L1 Cache
-
384 KB
L2 Cache
-
Theoretical Performance
9.312 GPixel/s
Pixel Rate
10.72 GPixel/s
37.25 GTexel/s
Texture Rate
10.72 GTexel/s
-
FP16 (half)
-
894.0 GFLOPS
FP32 (float)
-
74.50 GFLOPS
FP64 (double)
-
Graphics Processor
GF114
GPU Name
R580+
-
GPU Variant
R580+ XT (215BAABKA31FG)
Fermi 2.0
Architecture
R500
TSMC
Foundry
TSMC
40 nm
Process Size
90 nm
1.95 billion
Transistors
0.384 billion
332 mm²
Die Size
352 mm²
Board Design
102W
TDP
125W
300 W
Suggested PSU
300 W
2x DVI 1x mini-HDMI 1.3a
Outputs
1x DVI 1x VHDCI
-
Power Connectors
1x 6-pin
Graphics Features
12 (11_0)
DirectX
9.0c (9_3)
4.6
OpenGL
2.1 (full) 3.0 (partial)
1.1
OpenCL
N/A
N/A
Vulkan
N/A
2.1
CUDA
-
5.1
Shader Model
3.0
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7
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8
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