ATI Mobility Radeon HD 3870 vs ATI Mobility Radeon HD 3850

VS

ATI Mobility Radeon HD 3870

ATI Mobility Radeon HD 3850

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 512MB VRAM Mobility Radeon HD 3850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3870 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 48.00GB/s)

ATI Mobility Radeon HD 3850 's Advantages

Lower TDP (35W vs 55W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870 +13%

0.422 TFLOPS

Mobility Radeon HD 3850

0.371 TFLOPS

Mobility Radeon HD 3870

VS

Mobility Radeon HD 3850

Graphics Card

Jun 2008

Release Date

Jun 2008

M8x

Generation

M8x

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

750 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

256bit

Memory Bus

256bit

54.40GB/s

Bandwidth

48.00GB/s

Render Config

4

Compute Units

4

-

320

Shading Units

320

16

TMUs

16

ROPs

16

-

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

9.280 GPixel/s

10.56 GTexel/s

Texture Rate

9.280 GTexel/s

-

422.4 GFLOPS

FP32 (float)

371.2 GFLOPS

84.48 GFLOPS

FP64 (double)

74.24 GFLOPS

Board Design

55W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

M88

-

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

OpenGL

3.3

N/A

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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