ATI Mobility Radeon HD 3870 vs ATI Mobility Radeon HD 5850

VS

ATI Mobility Radeon HD 3870

ATI Mobility Radeon HD 5850

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3870 and 1024MB VRAM Mobility Radeon HD 5850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 5850 's Advantages

Released 1 years and 7 months late

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (64.00GB/s vs 54.40GB/s)

480 additional rendering cores

Lower TDP (30W vs 55W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3870

0.422 TFLOPS

Mobility Radeon HD 5850 +89%

0.8 TFLOPS

Mobility Radeon HD 3870

VS

Mobility Radeon HD 5850

Graphics Card

Jun 2008

Release Date

Jan 2010

M8x

Generation

Manhattan

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

850 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

64.00GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

800

16

TMUs

40

16

ROPs

16

-

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

10.56 GPixel/s

Pixel Rate

8.000 GPixel/s

10.56 GTexel/s

Texture Rate

20.00 GTexel/s

-

422.4 GFLOPS

FP32 (float)

800.0 GFLOPS

84.48 GFLOPS

FP64 (double)

-

Board Design

55W

TDP

30W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

Broadway

-

GPU Variant

Broadway PRO (216-0769024)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

1.04 billion

192 mm²

Die Size

166 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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