ATI Mobility Radeon HD 4850 X2 vs AMD Radeon HD 6630M Mac Edition

VS

ATI Mobility Radeon HD 4850 X2

AMD Radeon HD 6630M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Mobility Radeon HD 4850 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 4850 X2 's Advantages

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (89.60GB/s vs 19.20GB/s)

320 additional rendering cores

AMD Radeon HD 6630M Mac Edition 's Advantages

Released 2 years late

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4850 X2 +66%

0.8 TFLOPS

Radeon HD 6630M Mac Edition

0.48 TFLOPS

Mobility Radeon HD 4850 X2

VS

Radeon HD 6630M Mac Edition

Graphics Card

Jan 2009

Release Date

Jan 2011

M9x

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

700 MHz

Memory Clock

600 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

89.60GB/s

Bandwidth

19.20GB/s

Render Config

10

Compute Units

6

-

800

Shading Units

480

40

TMUs

24

16

ROPs

8

-

16 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

-

Theoretical Performance

8.000 GPixel/s

Pixel Rate

4.000 GPixel/s

20.00 GTexel/s

Texture Rate

12.00 GTexel/s

-

800.0 GFLOPS

FP32 (float)

480.0 GFLOPS

160.0 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

26W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

M98

GPU Name

Whistler

M98 L2 (216-0732019)

GPU Variant

Whistler LP

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

55 nm

Process Size

40 nm

0.956 billion

Transistors

0.716 billion

256 mm²

Die Size

104 mm²

Graphics Features

10.1 (10_1)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

-

4.1

Shader Model

5.0

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