ATI Radeon HD 4855 vs AMD Radeon R7 260X

VS

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4855 and 2GB VRAM Radeon R7 260X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4855 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 104.0GB/s)

Lower TDP (110W vs 115W)

AMD Radeon R7 260X 's Advantages

Released 3 years and 9 months late

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4855

0.736 TFLOPS

Radeon R7 260X +167%

1.971 TFLOPS

Radeon HD 4855

VS

Radeon R7 260X

Graphics Card

Jan 2010

Release Date

Oct 2013

Radeon R700

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1625 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

104.0GB/s

Render Config

-

SM Count

-

8

Compute Units

14

640

Shading Units

896

32

TMUs

56

16

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

9.200 GPixel/s

Pixel Rate

17.60 GPixel/s

18.40 GTexel/s

Texture Rate

61.60 GTexel/s

-

FP16 (half)

-

736.0 GFLOPS

FP32 (float)

1.971 TFLOPS

147.2 GFLOPS

FP64 (double)

123.2 GFLOPS

Graphics Processor

RV770

GPU Name

Bonaire

RV770 PRO (215-0669065)

GPU Variant

Bonaire XTX (215-0839097)

TeraScale

Architecture

GCN 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

2.08 billion

256 mm²

Die Size

160 mm²

Board Design

110W

TDP

115W

300 W

Suggested PSU

300 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

1x 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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