AMD Radeon RX 550X 640SP vs AMD Radeon HD 7870 XT

VS

AMD Radeon RX 550X 640SP

AMD Radeon HD 7870 XT

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

Main Differences

AMD Radeon RX 550X 640SP 's Advantages

Released 5 years and 5 months late

Boost Clock has increased by 10% (1071MHz vs 975MHz)

Lower TDP (60W vs 185W)

AMD Radeon HD 7870 XT 's Advantages

Larger VRAM bandwidth (192.0GB/s vs 96.00GB/s)

896 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 550X 640SP

1.371 TFLOPS

Radeon HD 7870 XT +118%

2.995 TFLOPS

Radeon RX 550X 640SP

VS

Radeon HD 7870 XT

Graphics Card

Apr 2018

Release Date

Nov 2012

Polaris

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1019 MHz

Base Clock

925 MHz

1071 MHz

Boost Clock

975 MHz

1500 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

96.00GB/s

Bandwidth

192.0GB/s

Render Config

10

Compute Units

24

-

640

Shading Units

1536

40

TMUs

96

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

512 KB

-

Theoretical Performance

17.14 GPixel/s

Pixel Rate

31.20 GPixel/s

42.84 GTexel/s

Texture Rate

93.60 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

2.995 TFLOPS

85.68 GFLOPS

FP64 (double)

748.8 GFLOPS

Board Design

60W

TDP

185W

250 W

Suggested PSU

450 W

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

Outputs

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

None

Power Connectors

2x 6-pin

Graphics Processor

Baffin

GPU Name

Tahiti

Baffin LE

GPU Variant

Tahiti LE (215-0821122)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

3 billion

Transistors

4.313 billion

123 mm²

Die Size

352 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

6.4

Shader Model

5.1

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