NVIDIA GeForce GT 640 Rev. 2 vs AMD Radeon 550X

VS

NVIDIA GeForce GT 640 Rev. 2 AMD Radeon 550X

We compared two Desktop platform GPUs: 1024MB VRAM GeForce GT 640 Rev. 2 and 2GB VRAM Radeon 550X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 640 Rev. 2 's Advantages

Lower TDP (49W vs 50W)

AMD Radeon 550X 's Advantages

Released 5 years and 10 months late

Boost Clock1218MHz

More VRAM (2GB vs 1GB)

Larger VRAM bandwidth (112.0GB/s vs 40.06GB/s)

128 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 640 Rev. 2

0.803 TFLOPS

Radeon 550X +55%

1.247 TFLOPS

GeForce GT 640 Rev. 2

VS

Radeon 550X

Graphics Card

May 2013

Release Date

Mar 2019

GeForce 600

Generation

Polaris

Desktop

Type

Desktop

PCIe 2.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1082 MHz

-

Boost Clock

1218 MHz

1252 MHz

Memory Clock

1750 MHz

Memory

1024MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

40.06GB/s

Bandwidth

112.0GB/s

Render Config

-

SM Count

-

Compute Units

8

384

Shading Units

512

32

TMUs

32

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

8.368 GPixel/s

Pixel Rate

19.49 GPixel/s

33.47 GTexel/s

Texture Rate

38.98 GTexel/s

-

FP16 (half)

1247 GFLOPS

803.3 GFLOPS

FP32 (float)

1247 GFLOPS

33.47 GFLOPS

FP64 (double)

77.95 GFLOPS

Graphics Processor

GK208

GPU Name

Lexa

GK208-400-A1

GPU Variant

Lexa PRO (215-0904018)

Kepler 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

1.02 billion

Transistors

2.2 billion

87 mm²

Die Size

103 mm²

Board Design

49W

TDP

50W

200 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.4a 1x VGA

Outputs

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

None

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.1

1.1

Vulkan

1.2

3.5

CUDA

-

5.1

Shader Model

6.4

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