AMD Radeon HD 7870 GHz Edition vs AMD Radeon RX 550X 640SP

VS

AMD Radeon HD 7870 GHz Edition

AMD Radeon RX 550X 640SP

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition and 2GB VRAM Radeon RX 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7870 GHz Edition 's Advantages

Larger VRAM bandwidth (153.6GB/s vs 96.00GB/s)

640 additional rendering cores

AMD Radeon RX 550X 640SP 's Advantages

Released 6 years and 1 months late

Boost Clock1071MHz

Lower TDP (60W vs 175W)

Score

Benchmark

FP32 (float)

Radeon HD 7870 GHz Edition +86%

2.56 TFLOPS

Radeon RX 550X 640SP

1.371 TFLOPS

Radeon HD 7870 GHz Edition

VS

Radeon RX 550X 640SP

Graphics Card

Mar 2012

Release Date

Apr 2018

Southern Islands

Generation

Polaris

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1019 MHz

-

Boost Clock

1071 MHz

1200 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

96.00GB/s

Render Config

20

Compute Units

10

-

1280

Shading Units

640

80

TMUs

40

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

1024 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

17.14 GPixel/s

80.00 GTexel/s

Texture Rate

42.84 GTexel/s

-

FP16 (half)

1371 GFLOPS

2.560 TFLOPS

FP32 (float)

1371 GFLOPS

160.0 GFLOPS

FP64 (double)

85.68 GFLOPS

Board Design

175W

TDP

60W

450 W

Suggested PSU

250 W

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

Outputs

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

2x 6-pin

Power Connectors

None

Graphics Processor

Pitcairn

GPU Name

Baffin

Pitcairn XT (215-0828047)

GPU Variant

Baffin LE

GCN 1.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

2.8 billion

Transistors

3 billion

212 mm²

Die Size

123 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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