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 1024GB)

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

-

Compute Units

36

6

SM Count

-

288

Shading Units

2304

48

TMUs

144

24

ROPs

32

-

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

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 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

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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