ATI Mobility Radeon HD 4670 vs ATI Mobility Radeon HD 3870 X2

VS

ATI Mobility Radeon HD 4670

ATI Mobility Radeon HD 3870 X2

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 4670 and 512MB VRAM Mobility Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4670 's Advantages

Lower TDP (35W vs 110W)

ATI Mobility Radeon HD 3870 X2 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 25.60GB/s)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4670 +2%

0.432 TFLOPS

Mobility Radeon HD 3870 X2

0.422 TFLOPS

Mobility Radeon HD 4670

VS

Mobility Radeon HD 3870 X2

Graphics Card

Jan 2009

Release Date

Sep 2008

M9x

Generation

M8x

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

850 MHz

Memory

512MB

Memory Size

512MB

GDDR3

Memory Type

GDDR3

128bit

Memory Bus

256bit

25.60GB/s

Bandwidth

54.40GB/s

Render Config

4

Compute Units

4

-

320

Shading Units

320

32

TMUs

16

8

ROPs

16

-

16 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

256 KB

-

Theoretical Performance

5.400 GPixel/s

Pixel Rate

10.56 GPixel/s

21.60 GTexel/s

Texture Rate

10.56 GTexel/s

-

432.0 GFLOPS

FP32 (float)

422.4 GFLOPS

-

FP64 (double)

84.48 GFLOPS

Board Design

35W

TDP

110W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M96

GPU Name

M88

M96 XT (216-0729051)

GPU Variant

-

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.514 billion

Transistors

0.666 billion

146 mm²

Die Size

192 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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