AMD Radeon HD 6870 vs AMD Radeon RX 550X

VS

AMD Radeon HD 6870

AMD Radeon RX 550X

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 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 HD 6870 's Advantages

Larger VRAM bandwidth (134.4GB/s vs 96.00GB/s)

608 additional rendering cores

AMD Radeon RX 550X 's Advantages

Released 8 years and 2 months late

Boost Clock1183MHz

More VRAM (4GB vs 1024GB)

Lower TDP (50W vs 151W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 +66%

2.016 TFLOPS

Radeon RX 550X

1.211 TFLOPS

Radeon HD 6870

VS

Radeon RX 550X

Graphics Card

Oct 2010

Release Date

Dec 2018

Northern Islands

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

1050 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

96.00GB/s

Render Config

14

Compute Units

8

-

1120

Shading Units

512

56

TMUs

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

18.93 GPixel/s

50.40 GTexel/s

Texture Rate

37.86 GTexel/s

-

FP16 (half)

1211 GFLOPS

2.016 TFLOPS

FP32 (float)

1211 GFLOPS

-

FP64 (double)

75.71 GFLOPS

Board Design

151W

TDP

50W

450 W

Suggested PSU

250 W

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

Outputs

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

2x 6-pin

Power Connectors

None

Graphics Processor

Barts

GPU Name

Lexa

Barts XT (215-0798000)

GPU Variant

Lexa PRO (215-0904018)

TeraScale 2

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

1.7 billion

Transistors

2.2 billion

255 mm²

Die Size

103 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_0)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.2

-

5.0

Shader Model

6.4

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