AMD Radeon HD 6870 vs ATI Radeon HD 2600 XT X2

VS

AMD Radeon HD 6870

ATI Radeon HD 2600 XT X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6870 and 512MB VRAM Radeon HD 2600 XT X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6870 's Advantages

Released 3 years and 3 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (134.4GB/s vs 25.60GB/s)

1000 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6870 +950%

2.016 TFLOPS

Radeon HD 2600 XT X2

0.192 TFLOPS

Radeon HD 6870

VS

Radeon HD 2600 XT X2

Graphics Card

Oct 2010

Release Date

Jul 2007

Northern Islands

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1050 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

134.4GB/s

Bandwidth

25.60GB/s

Render Config

14

Compute Units

3

-

1120

Shading Units

120

56

TMUs

8

32

ROPs

4

-

8 KB (per CU)

L1 Cache

-

512 KB

L2 Cache

64 KB

-

Theoretical Performance

28.80 GPixel/s

Pixel Rate

3.200 GPixel/s

50.40 GTexel/s

Texture Rate

6.400 GTexel/s

-

2.016 TFLOPS

FP32 (float)

192.0 GFLOPS

-

Board Design

151W

TDP

Unknown

450 W

Suggested PSU

200 W

2x DVI 1x HDMI 1.3a 2x mini-DisplayPort 1.1

Outputs

4x DVI 1x S-Video

2x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

Barts

GPU Name

RV630

Barts XT (215-0798000)

GPU Variant

-

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

65 nm

1.7 billion

Transistors

0.39 billion

255 mm²

Die Size

153 mm²

Graphics Features

11.2 (11_0)

DirectX

10.0 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

N/A

Vulkan

N/A

-

5.0

Shader Model

4.0

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