ATI Mobility Radeon HD 4850 X2 vs ATI Mobility Radeon HD 3670

VS

ATI Mobility Radeon HD 4850 X2

ATI Mobility Radeon HD 3670

We compared two Mobile platform GPUs: 1024MB VRAM Mobility Radeon HD 4850 X2 and 256MB VRAM Mobility Radeon HD 3670 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4850 X2 's Advantages

Released 1 years late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (89.60GB/s vs 25.60GB/s)

680 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4850 X2 +390%

0.8 TFLOPS

Mobility Radeon HD 3670

0.163 TFLOPS

Mobility Radeon HD 4850 X2

VS

Mobility Radeon HD 3670

Graphics Card

Jan 2009

Release Date

Jan 2008

M9x

Generation

M8x

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

700 MHz

Memory Clock

800 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

89.60GB/s

Bandwidth

25.60GB/s

Render Config

10

Compute Units

3

-

800

Shading Units

120

40

TMUs

8

16

ROPs

4

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

128 KB

-

Theoretical Performance

8.000 GPixel/s

Pixel Rate

2.720 GPixel/s

20.00 GTexel/s

Texture Rate

5.440 GTexel/s

-

800.0 GFLOPS

FP32 (float)

163.2 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

30W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

M98

GPU Name

M86

M98 L2 (216-0732019)

GPU Variant

-

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.956 billion

Transistors

0.378 billion

256 mm²

Die Size

135 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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