AMD Radeon RX 550 vs ATI Radeon HD 4855

VS

AMD Radeon RX 550

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 550 and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 550 's Advantages

Released 7 years and 3 months late

Boost Clock1183MHz

More VRAM (2GB vs 512GB)

Lower TDP (50W vs 110W)

ATI Radeon HD 4855 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 112.0GB/s)

128 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 550 +64%

1.211 TFLOPS

Radeon HD 4855

0.736 TFLOPS

Radeon RX 550

VS

Radeon HD 4855

Graphics Card

Apr 2017

Release Date

Jan 2010

Polaris

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1100 MHz

Base Clock

-

1183 MHz

Boost Clock

-

1750 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

112.0GB/s

Bandwidth

115.2GB/s

Render Config

8

Compute Units

8

-

512

Shading Units

640

32

TMUs

32

16

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

18.93 GPixel/s

Pixel Rate

9.200 GPixel/s

37.86 GTexel/s

Texture Rate

18.40 GTexel/s

1211 GFLOPS

FP16 (half)

-

1211 GFLOPS

FP32 (float)

736.0 GFLOPS

75.71 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

50W

TDP

110W

250 W

Suggested PSU

300 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

None

Power Connectors

1x 6-pin

Graphics Processor

Lexa

GPU Name

RV770

Lexa PRO (215-0904018)

GPU Variant

RV770 PRO (215-0669065)

GCN 4.0

Architecture

TeraScale

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

55 nm

2.2 billion

Transistors

0.956 billion

103 mm²

Die Size

256 mm²

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.2

Vulkan

N/A

-

6.4

Shader Model

4.1

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