NVIDIA GeForce GTX 260 vs ATI Radeon HD 4855

VS

NVIDIA GeForce GTX 260

ATI Radeon HD 4855

We compared two Desktop platform GPUs: 896MB VRAM GeForce GTX 260 and 512MB VRAM Radeon HD 4855 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 260 's Advantages

More VRAM (896GB vs 512GB)

ATI Radeon HD 4855 's Advantages

Released 1 years and 7 months late

Larger VRAM bandwidth (115.2GB/s vs 111.9GB/s)

448 additional rendering cores

Lower TDP (110W vs 182W)

Score

Benchmark

FP32 (float)

GeForce GTX 260

0.477 TFLOPS

Radeon HD 4855 +54%

0.736 TFLOPS

GeForce GTX 260

VS

Radeon HD 4855

Graphics Card

Jun 2008

Release Date

Jan 2010

GeForce 200

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

999 MHz

Memory Clock

900 MHz

Memory

896MB

Memory Size

512MB

GDDR3

Memory Type

GDDR5

448bit

Memory Bus

256bit

111.9GB/s

Bandwidth

115.2GB/s

Render Config

-

Compute Units

8

24

SM Count

-

192

Shading Units

640

64

TMUs

32

28

ROPs

16

-

L1 Cache

16 KB (per CU)

224 KB

L2 Cache

256 KB

-

Theoretical Performance

16.13 GPixel/s

Pixel Rate

9.200 GPixel/s

36.86 GTexel/s

Texture Rate

18.40 GTexel/s

-

476.9 GFLOPS

FP32 (float)

736.0 GFLOPS

59.62 GFLOPS

FP64 (double)

147.2 GFLOPS

Board Design

182W

TDP

110W

450 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

GT200

GPU Name

RV770

G200-100-A2

GPU Variant

RV770 PRO (215-0669065)

Tesla 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

65 nm

Process Size

55 nm

1.4 billion

Transistors

0.956 billion

576 mm²

Die Size

256 mm²

Graphics Features

11.1 (10_0)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

1.3

CUDA

-

4.0

Shader Model

4.1

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