ATI Radeon HD 4855 vs AMD Radeon R9 380X

VS

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4855 and 4GB VRAM Radeon R9 380X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4855 's Advantages

Lower TDP (110W vs 190W)

AMD Radeon R9 380X 's Advantages

Released 5 years and 10 months late

Larger VRAM bandwidth (182.4GB/s vs 115.2GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4855

0.736 TFLOPS

Radeon R9 380X +439%

3.973 TFLOPS

Radeon HD 4855

VS

Radeon R9 380X

Graphics Card

Jan 2010

Release Date

Nov 2015

Radeon R700

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1425 MHz

Memory

512MB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

182.4GB/s

Render Config

-

SM Count

-

8

Compute Units

32

640

Shading Units

2048

32

TMUs

128

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

512 KB

Theoretical Performance

9.200 GPixel/s

Pixel Rate

31.04 GPixel/s

18.40 GTexel/s

Texture Rate

124.2 GTexel/s

-

FP16 (half)

3.973 TFLOPS

736.0 GFLOPS

FP32 (float)

3.973 TFLOPS

147.2 GFLOPS

FP64 (double)

248.3 GFLOPS

Graphics Processor

RV770

GPU Name

Antigua

RV770 PRO (215-0669065)

GPU Variant

Antigua XT (215-0877016)

TeraScale

Architecture

GCN 3.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

5 billion

256 mm²

Die Size

366 mm²

Board Design

110W

TDP

190W

300 W

Suggested PSU

450 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

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

1x 6-pin

Power Connectors

2x 6-pin

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3

OpenGL

4.6

1.1

OpenCL

2.0

N/A

Vulkan

1.2

-

CUDA

-

4.1

Shader Model

6.3

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