AMD Radeon HD 6870 1600SP Edition vs AMD Radeon 550X 640SP

VS

AMD Radeon HD 6870 1600SP Edition

AMD Radeon 550X 640SP

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 1600SP Edition and 4GB VRAM Radeon 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 1600SP Edition 's Advantages

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

960 additional rendering cores

AMD Radeon 550X 640SP 's Advantages

Released 5 years and 3 months late

Boost Clock1071MHz

More VRAM (4GB vs 1024GB)

Lower TDP (50W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 6870 1600SP Edition +98%

2.72 TFLOPS

Radeon 550X 640SP

1.371 TFLOPS

Radeon HD 6870 1600SP Edition

VS

Radeon 550X 640SP

Graphics Card

Jan 2013

Release Date

Apr 2018

Northern Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1019 MHz

-

Boost Clock

1071 MHz

1050 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

134.4GB/s

Bandwidth

48.00GB/s

Render Config

20

Compute Units

10

-

1600

Shading Units

640

80

TMUs

40

32

ROPs

16

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

27.20 GPixel/s

Pixel Rate

17.14 GPixel/s

68.00 GTexel/s

Texture Rate

42.84 GTexel/s

-

FP16 (half)

1371 GFLOPS

2.720 TFLOPS

FP32 (float)

1371 GFLOPS

544.0 GFLOPS

FP64 (double)

85.68 GFLOPS

Board Design

175W

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

Cypress

GPU Name

Lexa

Cypress XT (215-0735033)

GPU Variant

Lexa PRO (215-0904018)

TeraScale 2

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

40 nm

Process Size

14 nm

2.154 billion

Transistors

2.2 billion

334 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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