ATI Radeon HD 2900 PRO vs ATI Radeon HD 3870

VS

ATI Radeon HD 2900 PRO

ATI Radeon HD 3870

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 2900 PRO and 512MB VRAM Radeon HD 3870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 3870 's Advantages

Larger VRAM bandwidth (72.06GB/s vs 51.20GB/s)

Lower TDP (106W vs 200W)

Score

Benchmark

FP32 (float)

Radeon HD 2900 PRO

0.384 TFLOPS

Radeon HD 3870 +29%

0.497 TFLOPS

Radeon HD 2900 PRO

VS

Radeon HD 3870

Graphics Card

Dec 2007

Release Date

Nov 2007

Radeon R600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 1.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1126 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR4

256bit

Memory Bus

256bit

51.20GB/s

Bandwidth

72.06GB/s

Render Config

4

Compute Units

4

-

320

Shading Units

320

16

TMUs

16

ROPs

16

-

128 KB

L2 Cache

256 KB

-

Theoretical Performance

9.600 GPixel/s

Pixel Rate

12.43 GPixel/s

9.600 GTexel/s

Texture Rate

12.43 GTexel/s

-

384.0 GFLOPS

FP32 (float)

497.3 GFLOPS

-

FP64 (double)

99.46 GFLOPS

Board Design

200W

TDP

106W

550 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

2x DVI 1x S-Video

1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

R600

GPU Name

RV670

R600 PRO (215RGMDKA13FG)

GPU Variant

RV670 XT (215-0708005)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

80 nm

Process Size

55 nm

0.72 billion

Transistors

0.666 billion

420 mm²

Die Size

192 mm²

Graphics Features

10.0 (10_0)

DirectX

10.1 (10_1)

3.3 (full) 4.0 (partial)

OpenGL

3.3 (full) 4.0 (partial)

N/A

OpenCL

N/A

Vulkan

N/A

-

4.0

Shader Model

4.1

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