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GPU Comparison
NVIDIA GeForce GT 645 OEM vs AMD Radeon RX 580X
NVIDIA GeForce GT 645 OEM vs AMD Radeon RX 580X
VS
NVIDIA GeForce GT 645 OEM
AMD Radeon RX 580X
We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 645 OEM and 8GB VRAM Radeon RX 580X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GT 645 OEM 's Advantages
Lower TDP (102W vs 185W)
AMD Radeon RX 580X 's Advantages
Released 6 years late
Boost Clock1340MHz
More VRAM (8GB vs 1GB)
Larger VRAM bandwidth (256.0GB/s vs 91.87GB/s)
2016 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GT 645 OEM
0.894 TFLOPS
Radeon RX 580X
+590%
6.175 TFLOPS
GeForce GT 645 OEM
VS
Radeon RX 580X
Graphics Card
Apr 2012
Release Date
Apr 2018
GeForce 600
Generation
Polaris
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
1257 MHz
-
Boost Clock
1340 MHz
957 MHz
Memory Clock
2000 MHz
Memory
1024MB
Memory Size
8GB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
256bit
91.87GB/s
Bandwidth
256.0GB/s
Render Config
6
SM Count
-
-
Compute Units
36
288
Shading Units
2304
48
TMUs
144
24
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
64 KB (per SM)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
2 MB
Theoretical Performance
9.312 GPixel/s
Pixel Rate
42.88 GPixel/s
37.25 GTexel/s
Texture Rate
193.0 GTexel/s
-
FP16 (half)
6.175 TFLOPS
894.0 GFLOPS
FP32 (float)
6.175 TFLOPS
74.50 GFLOPS
FP64 (double)
385.9 GFLOPS
Graphics Processor
GF114
GPU Name
Polaris 20
-
GPU Variant
Polaris 20 XTX (215-0910038)
Fermi 2.0
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
40 nm
Process Size
14 nm
1.95 billion
Transistors
5.7 billion
332 mm²
Die Size
232 mm²
Board Design
102W
TDP
185W
300 W
Suggested PSU
450 W
2x DVI 1x mini-HDMI 1.3a
Outputs
1x HDMI 2.0b 3x DisplayPort 1.4a
-
Power Connectors
1x 8-pin
Graphics Features
12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
1.1
OpenCL
2.1
N/A
Vulkan
1.2
2.1
CUDA
-
5.1
Shader Model
6.4
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