AMD Radeon RX 550 vs AMD Radeon HD 7870 XT

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 550 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 550 's Advantages

Released 4 years and 5 months late

Boost Clock has increased by 21% (1183MHz vs 975MHz)

Lower TDP (50W vs 185W)

AMD Radeon HD 7870 XT 's Advantages

Larger VRAM bandwidth (192.0GB/s vs 112.0GB/s)

1024 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 550

1.211 TFLOPS

Radeon HD 7870 XT +147%

2.995 TFLOPS

Radeon RX 550

VS

Radeon HD 7870 XT

Graphics Card

Apr 2017

Release Date

Nov 2012

Polaris

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1100 MHz

Base Clock

925 MHz

1183 MHz

Boost Clock

975 MHz

1750 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

112.0GB/s

Bandwidth

192.0GB/s

Render Config

-

SM Count

-

8

Compute Units

24

512

Shading Units

1536

32

TMUs

96

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

18.93 GPixel/s

Pixel Rate

31.20 GPixel/s

37.86 GTexel/s

Texture Rate

93.60 GTexel/s

1211 GFLOPS

FP16 (half)

-

1211 GFLOPS

FP32 (float)

2.995 TFLOPS

75.71 GFLOPS

FP64 (double)

748.8 GFLOPS

Graphics Processor

Lexa

GPU Name

Tahiti

Lexa PRO (215-0904018)

GPU Variant

Tahiti LE (215-0821122)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

4.313 billion

103 mm²

Die Size

352 mm²

Board Design

50W

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 Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

6.4

Shader Model

5.1

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