NVIDIA GeForce GT 640 OEM Rebrand vs AMD Radeon RX 550X

VS

NVIDIA GeForce GT 640 OEM Rebrand

AMD Radeon RX 550X

We compared two Desktop platform GPUs: 1536MB VRAM GeForce GT 640 OEM Rebrand and 4GB VRAM Radeon RX 550X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 550X 's Advantages

Released 6 years and 8 months late

Boost Clock1183MHz

More VRAM (4GB vs 1536GB)

Larger VRAM bandwidth (96.00GB/s vs 38.40GB/s)

368 additional rendering cores

Lower TDP (50W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GT 640 OEM Rebrand

0.415 TFLOPS

Radeon RX 550X +191%

1.211 TFLOPS

GeForce GT 640 OEM Rebrand

VS

Radeon RX 550X

Graphics Card

Apr 2012

Release Date

Dec 2018

GeForce 600

Generation

Polaris

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1100 MHz

-

Boost Clock

1183 MHz

800 MHz

Memory Clock

1500 MHz

Memory

1536MB

Memory Size

4GB

DDR3

Memory Type

GDDR5

192bit

Memory Bus

128bit

38.40GB/s

Bandwidth

96.00GB/s

Render Config

-

Compute Units

8

3

SM Count

-

144

Shading Units

512

24

TMUs

32

24

ROPs

16

-

64 KB (per SM)

L1 Cache

16 KB (per CU)

384 KB

L2 Cache

512 KB

-

Theoretical Performance

4.320 GPixel/s

Pixel Rate

18.93 GPixel/s

17.28 GTexel/s

Texture Rate

37.86 GTexel/s

-

FP16 (half)

1211 GFLOPS

414.7 GFLOPS

FP32 (float)

1211 GFLOPS

34.56 GFLOPS

FP64 (double)

75.71 GFLOPS

Board Design

75W

TDP

50W

250 W

Suggested PSU

250 W

2x DVI 1x mini-HDMI 1.3a

Outputs

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

None

Power Connectors

None

Graphics Processor

GF116

GPU Name

Lexa

GF116-150-A1

GPU Variant

Lexa PRO (215-0904018)

Fermi 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.17 billion

Transistors

2.2 billion

238 mm²

Die Size

103 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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