AMD Radeon 550X 640SP vs AMD Radeon HD 6870

VS

AMD Radeon 550X 640SP

AMD Radeon HD 6870

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 1024MB VRAM Radeon HD 6870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X 640SP 's Advantages

Released 7 years and 6 months late

Boost Clock1071MHz

More VRAM (4GB vs 1024GB)

Lower TDP (50W vs 151W)

AMD Radeon HD 6870 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 48.00GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP

1.371 TFLOPS

Radeon HD 6870 +47%

2.016 TFLOPS

Radeon 550X 640SP

VS

Radeon HD 6870

Graphics Card

Apr 2018

Release Date

Oct 2010

Polaris

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1019 MHz

Base Clock

-

1071 MHz

Boost Clock

-

1500 MHz

Memory Clock

1050 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

256bit

48.00GB/s

Bandwidth

134.4GB/s

Render Config

10

Compute Units

14

-

640

Shading Units

1120

40

TMUs

56

16

ROPs

32

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

17.14 GPixel/s

Pixel Rate

28.80 GPixel/s

42.84 GTexel/s

Texture Rate

50.40 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

2.016 TFLOPS

85.68 GFLOPS

FP64 (double)

-

Board Design

50W

TDP

151W

250 W

Suggested PSU

450 W

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

Outputs

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

None

Power Connectors

2x 6-pin

Graphics Processor

Lexa

GPU Name

Barts

Lexa PRO (215-0904018)

GPU Variant

Barts XT (215-0798000)

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

2.2 billion

Transistors

1.7 billion

103 mm²

Die Size

255 mm²

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

6.4

Shader Model

5.0

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