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GPU Comparison
NVIDIA GeForce GT 645 OEM vs ATI Radeon X1550
NVIDIA GeForce GT 645 OEM vs ATI Radeon X1550
VS
NVIDIA GeForce GT 645 OEM
ATI Radeon X1550
We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 256MB VRAM Radeon X1550 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 256GB)
Larger VRAM bandwidth (91.87GB/s vs 12.80GB/s)
288 additional rendering cores
ATI Radeon X1550 's Advantages
Lower TDP (27W vs 102W)
Score
GeForce GT 645 OEM
VS
Radeon X1550
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
400 MHz
Memory
1024MB
Memory Size
256MB
GDDR5
Memory Type
DDR2
192bit
Memory Bus
128bit
91.87GB/s
Bandwidth
12.80GB/s
Render Config
6
SM Count
-
-
Compute Units
-
288
Shading Units
-
48
TMUs
4
24
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
64 KB (per SM)
L1 Cache
-
384 KB
L2 Cache
-
Theoretical Performance
9.312 GPixel/s
Pixel Rate
2.200 GPixel/s
37.25 GTexel/s
Texture Rate
2.200 GTexel/s
-
FP16 (half)
-
894.0 GFLOPS
FP32 (float)
-
74.50 GFLOPS
FP64 (double)
-
Graphics Processor
GF114
GPU Name
RV516
-
GPU Variant
-
Fermi 2.0
Architecture
R500
TSMC
Foundry
UMC
40 nm
Process Size
80 nm
1.95 billion
Transistors
0.107 billion
332 mm²
Die Size
100 mm²
Board Design
102W
TDP
27W
300 W
Suggested PSU
200 W
2x DVI 1x mini-HDMI 1.3a
Outputs
1x DVI 1x VGA 1x S-Video
-
Power Connectors
None
Graphics Features
12 (11_0)
DirectX
9.0c (9_3)
4.6
OpenGL
2.1
1.1
OpenCL
N/A
N/A
Vulkan
N/A
2.1
CUDA
-
5.1
Shader Model
3.0
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