ATI Radeon HD 3870 Mac Edition vs ATI Radeon HD 3850 X3

VS

ATI Radeon HD 3870 Mac Edition

ATI Radeon HD 3850 X3

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 3870 Mac Edition and 512MB VRAM Radeon HD 3850 X3 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

Larger VRAM bandwidth (72.06GB/s vs 54.40GB/s)

Lower TDP (106W vs 145W)

Score

Benchmark

FP32 (float)

Radeon HD 3870 Mac Edition +16%

0.497 TFLOPS

Radeon HD 3850 X3

0.428 TFLOPS

Radeon HD 3870 Mac Edition

VS

Radeon HD 3850 X3

Graphics Card

Jun 2008

Release Date

Unknown

Radeon R600

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1126 MHz

Memory Clock

850 MHz

Memory

512MB

Memory Size

512MB

GDDR4

Memory Type

GDDR3

256bit

Memory Bus

256bit

72.06GB/s

Bandwidth

54.40GB/s

Render Config

4

Compute Units

4

-

320

Shading Units

320

16

TMUs

16

ROPs

16

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

12.43 GPixel/s

Pixel Rate

10.70 GPixel/s

12.43 GTexel/s

Texture Rate

10.70 GTexel/s

-

497.3 GFLOPS

FP32 (float)

428.2 GFLOPS

99.46 GFLOPS

FP64 (double)

-

Board Design

106W

TDP

145W

300 W

Suggested PSU

300 W

2x DVI 1x S-Video

Outputs

4x DVI

1x 6-pin

Power Connectors

1x 8-pin

Graphics Processor

RV670

GPU Name

RV670

RV670 XT (215-0708005)

GPU Variant

RV670 PRO (215-0708003)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.666 billion

Transistors

0.666 billion

192 mm²

Die Size

192 mm²

Graphics Features

10.1 (10_1)

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

-

4.1

Shader Model

4.1

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