AMD Radeon 550X 640SP vs NVIDIA GeForce GT 640 OEM

VS

AMD Radeon 550X 640SP NVIDIA GeForce GT 640 OEM

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 2GB VRAM GeForce GT 640 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X 640SP 's Advantages

Released 6 years late

Boost Clock1071MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (48.00GB/s vs 28.51GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP +124%

1.371 TFLOPS

GeForce GT 640 OEM

0.612 TFLOPS

Radeon 550X 640SP

VS

GeForce GT 640 OEM

Graphics Card

Apr 2018

Release Date

Apr 2012

Polaris

Generation

GeForce 600

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1019 MHz

Base Clock

-

1071 MHz

Boost Clock

-

1500 MHz

Memory Clock

891 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

128bit

48.00GB/s

Bandwidth

28.51GB/s

Render Config

-

SM Count

-

10

Compute Units

-

640

Shading Units

384

40

TMUs

32

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

Theoretical Performance

17.14 GPixel/s

Pixel Rate

6.376 GPixel/s

42.84 GTexel/s

Texture Rate

25.50 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

612.1 GFLOPS

85.68 GFLOPS

FP64 (double)

25.50 GFLOPS

Graphics Processor

Lexa

GPU Name

GK107

Lexa PRO (215-0904018)

GPU Variant

GK107-320-A2

GCN 4.0

Architecture

Kepler

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

1.27 billion

103 mm²

Die Size

118 mm²

Board Design

50W

TDP

50W

250 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

None

Power Connectors

None

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1

OpenCL

3.0

1.2

Vulkan

1.1

-

CUDA

3.0

6.4

Shader Model

5.1

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