ATI Mobility Radeon HD 3850 X2 vs AMD Radeon HD 6630M Mac Edition

VS

ATI Mobility Radeon HD 3850 X2

AMD Radeon HD 6630M Mac Edition

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 3850 X2 and 256MB VRAM Radeon HD 6630M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 3850 X2 's Advantages

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (48.00GB/s vs 19.20GB/s)

AMD Radeon HD 6630M Mac Edition 's Advantages

Released 2 years and 7 months late

160 additional rendering cores

Lower TDP (26W vs 70W)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 3850 X2

0.371 TFLOPS

Radeon HD 6630M Mac Edition +29%

0.48 TFLOPS

Mobility Radeon HD 3850 X2

VS

Radeon HD 6630M Mac Edition

Graphics Card

Jun 2008

Release Date

Jan 2011

M8x

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

750 MHz

Memory Clock

600 MHz

Memory

512MB

Memory Size

256MB

GDDR3

Memory Type

GDDR5

256bit

Memory Bus

64bit

48.00GB/s

Bandwidth

19.20GB/s

Render Config

4

Compute Units

6

-

320

Shading Units

480

16

TMUs

24

16

ROPs

8

-

256 KB

L2 Cache

-

Theoretical Performance

9.280 GPixel/s

Pixel Rate

4.000 GPixel/s

9.280 GTexel/s

Texture Rate

12.00 GTexel/s

-

371.2 GFLOPS

FP32 (float)

480.0 GFLOPS

74.24 GFLOPS

FP64 (double)

-

Board Design

70W

TDP

26W

-

No outputs

Outputs

No outputs

-

Graphics Processor

M88

GPU Name

Whistler

-

GPU Variant

Whistler LP

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.666 billion

Transistors

0.716 billion

192 mm²

Die Size

104 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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