Home GPU Comparison NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon RX 580G

NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon RX 580G

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 8GB VRAM Radeon RX 580G to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 OEM Rebrand 's Advantages
Lower TDP (75W vs 185W)
AMD Radeon RX 580G 's Advantages
Released 6 years and 6 months late
Boost Clock1330MHz
More VRAM (8GB vs 1536GB)
Larger VRAM bandwidth (256.0GB/s vs 38.40GB/s)
2160 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GT 640 OEM Rebrand
0.415 TFLOPS
Radeon RX 580G +1376%
6.129 TFLOPS
VS

Graphics Card

Apr 2012
Release Date
Oct 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
1330 MHz
800 MHz
Memory Clock
2000 MHz

Memory

1536MB
Memory Size
8GB
DDR3
Memory Type
GDDR5
192bit
Memory Bus
256bit
38.40GB/s
Bandwidth
256.0GB/s

Render Config

-
Compute Units
36
3
SM Count
-
144
Shading Units
2304
24
TMUs
144
24
ROPs
32
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
2 MB
-
-
-

Theoretical Performance

4.320 GPixel/s
Pixel Rate
42.56 GPixel/s
17.28 GTexel/s
Texture Rate
191.5 GTexel/s
-
FP16 (half)
6.129 TFLOPS
414.7 GFLOPS
FP32 (float)
6.129 TFLOPS
34.56 GFLOPS
FP64 (double)
383.0 GFLOPS

Board Design

75W
TDP
185W
250 W
Suggested PSU
450 W
2x DVI 1x mini-HDMI 1.3a
Outputs
1x HDMI 2.0b 3x DisplayPort 1.4a
None
Power Connectors
1x 8-pin

Graphics Processor

GF116
GPU Name
Polaris 20
GF116-150-A1
GPU Variant
Polaris 20 XTX (215-0910038)
Fermi 2.0
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
40 nm
Process Size
14 nm
1.17 billion
Transistors
5.7 billion
238 mm²
Die Size
232 mm²

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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