ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 2600 XT X2

VS

ATI Radeon HD 3870 Mac Edition

ATI Radeon HD 2600 XT X2

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition 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

ATI Radeon HD 3870 Mac Edition 's Advantages

Released 11 months late

Larger VRAM bandwidth (72.06GB/s vs 25.60GB/s)

200 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition +158%

0.497 TFLOPS

Radeon HD 2600 XT X2

0.192 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 2600 XT X2

Graphics Card

Jun 2008

Release Date

Jul 2007

Radeon R600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

800 MHz

Memory

512MB

Memory Size

512MB

GDDR4

Memory Type

GDDR3

256bit

Memory Bus

128bit

72.06GB/s

Bandwidth

25.60GB/s

Render Config

4

Compute Units

3

-

320

Shading Units

120

16

TMUs

8

16

ROPs

4

-

256 KB

L2 Cache

64 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

3.200 GPixel/s

12.43 GTexel/s

Texture Rate

6.400 GTexel/s

-

497.3 GFLOPS

FP32 (float)

192.0 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

Unknown

300 W

Suggested PSU

200 W

2x DVI 1x S-Video

Outputs

4x DVI 1x S-Video

1x 6-pin

Power Connectors

1x 6-pin

Graphics Processor

RV670

GPU Name

RV630

RV670 XT (215-0708005)

GPU Variant

-

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

65 nm

0.666 billion

Transistors

0.39 billion

192 mm²

Die Size

153 mm²

Graphics Features

10.1 (10_1)

DirectX

10.0 (10_0)

3.3 (full) 4.0 (partial)

OpenGL

3.3

N/A

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.0

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