ATI Mobility Radeon HD 4670 Mac Edition vs ATI Mobility Radeon HD 4850

VS

ATI Mobility Radeon HD 4670 Mac Edition

ATI Mobility Radeon HD 4850

We compared two Mobile platform GPUs: 256MB VRAM Mobility Radeon HD 4670 Mac Edition and 1024MB VRAM Mobility Radeon HD 4850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4670 Mac Edition 's Advantages

Released 8 months late

ATI Mobility Radeon HD 4850 's Advantages

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (54.40GB/s vs 25.28GB/s)

480 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4670 Mac Edition

0.435 TFLOPS

Mobility Radeon HD 4850 +84%

0.804 TFLOPS

Mobility Radeon HD 4670 Mac Edition

VS

Mobility Radeon HD 4850

Graphics Card

Sep 2009

Release Date

Jan 2009

M9x

Generation

M9x

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

790 MHz

Memory Clock

850 MHz

Memory

256MB

Memory Size

1024MB

GDDR3

Memory Type

GDDR3

128bit

Memory Bus

256bit

25.28GB/s

Bandwidth

54.40GB/s

Render Config

4

Compute Units

10

-

320

Shading Units

800

32

TMUs

40

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

5.440 GPixel/s

Pixel Rate

8.048 GPixel/s

21.76 GTexel/s

Texture Rate

20.12 GTexel/s

-

435.2 GFLOPS

FP32 (float)

804.8 GFLOPS

-

FP64 (double)

161.0 GFLOPS

Board Design

35W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

M96

GPU Name

M98

M96 XT (216-0729051)

GPU Variant

M98 L2 (216-0732019)

TeraScale

Architecture

TeraScale

TSMC

Foundry

TSMC

55 nm

Process Size

55 nm

0.514 billion

Transistors

0.956 billion

146 mm²

Die Size

256 mm²

Graphics Features

10.1 (10_1)

DirectX

10.1 (10_1)

3.3

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

-

4.1

Shader Model

4.1

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