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

VS

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

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

Main Differences

AMD Radeon 550X 640SP 's Advantages

Released 5 years and 3 months late

Boost Clock1071MHz

More VRAM (4GB vs 1GB)

Lower TDP (50W vs 175W)

AMD Radeon HD 6870 1600SP Edition 's Advantages

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

960 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP

1.371 TFLOPS

Radeon HD 6870 1600SP Edition +98%

2.72 TFLOPS

Radeon 550X 640SP

VS

Radeon HD 6870 1600SP Edition

Graphics Card

Apr 2018

Release Date

Jan 2013

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

-

SM Count

-

10

Compute Units

20

640

Shading Units

1600

40

TMUs

80

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

17.14 GPixel/s

Pixel Rate

27.20 GPixel/s

42.84 GTexel/s

Texture Rate

68.00 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

2.720 TFLOPS

85.68 GFLOPS

FP64 (double)

544.0 GFLOPS

Graphics Processor

Lexa

GPU Name

Cypress

Lexa PRO (215-0904018)

GPU Variant

Cypress XT (215-0735033)

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

2.2 billion

Transistors

2.154 billion

103 mm²

Die Size

334 mm²

Board Design

50W

TDP

175W

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 Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

5.0

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