AMD Radeon RX 580X vs ATI Radeon HD 4855

VS

AMD Radeon RX 580X

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 580X 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 580X 's Advantages

Released 8 years and 3 months late

Boost Clock1340MHz

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (256.0GB/s vs 115.2GB/s)

1664 additional rendering cores

ATI Radeon HD 4855 's Advantages

Lower TDP (110W vs 185W)

Score

Benchmark

FP32 (float)

Radeon RX 580X +738%

6.175 TFLOPS

Radeon HD 4855

0.736 TFLOPS

Radeon RX 580X

VS

Radeon HD 4855

Graphics Card

Apr 2018

Release Date

Jan 2010

Polaris

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1257 MHz

Base Clock

-

1340 MHz

Boost Clock

-

2000 MHz

Memory Clock

900 MHz

Memory

8GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

256.0GB/s

Bandwidth

115.2GB/s

Render Config

36

Compute Units

8

-

2304

Shading Units

640

144

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

42.88 GPixel/s

Pixel Rate

9.200 GPixel/s

193.0 GTexel/s

Texture Rate

18.40 GTexel/s

6.175 TFLOPS

FP16 (half)

-

6.175 TFLOPS

FP32 (float)

736.0 GFLOPS

385.9 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

185W

TDP

110W

450 W

Suggested PSU

300 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Polaris 20

GPU Name

RV770

Polaris 20 XTX (215-0910038)

GPU Variant

RV770 PRO (215-0669065)

GCN 4.0

Architecture

TeraScale

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

55 nm

5.7 billion

Transistors

0.956 billion

232 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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