AMD Radeon R7 260X vs ATI Radeon HD 4855

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 260X 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 R7 260X 's Advantages

Released 3 years and 9 months late

256 additional rendering cores

ATI Radeon HD 4855 's Advantages

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

Lower TDP (110W vs 115W)

Score

Benchmark

FP32 (float)

Radeon R7 260X +167%

1.971 TFLOPS

Radeon HD 4855

0.736 TFLOPS

Radeon R7 260X

VS

Radeon HD 4855

Graphics Card

Oct 2013

Release Date

Jan 2010

Volcanic Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1625 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

104.0GB/s

Bandwidth

115.2GB/s

Render Config

-

SM Count

-

14

Compute Units

8

896

Shading Units

640

56

TMUs

32

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

17.60 GPixel/s

Pixel Rate

9.200 GPixel/s

61.60 GTexel/s

Texture Rate

18.40 GTexel/s

-

FP16 (half)

-

1.971 TFLOPS

FP32 (float)

736.0 GFLOPS

123.2 GFLOPS

FP64 (double)

147.2 GFLOPS

Graphics Processor

Bonaire

GPU Name

RV770

Bonaire XTX (215-0839097)

GPU Variant

RV770 PRO (215-0669065)

GCN 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.08 billion

Transistors

0.956 billion

160 mm²

Die Size

256 mm²

Board Design

115W

TDP

110W

300 W

Suggested PSU

300 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

1x 6-pin

Power Connectors

1x 6-pin

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

-

6.3

Shader Model

4.1

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