AMD Radeon HD 6630M Mac Edition vs AMD Radeon HD 6870M

VS

AMD Radeon HD 6630M Mac Edition

AMD Radeon HD 6870M

We compared two Mobile platform GPUs: 256MB VRAM Radeon HD 6630M Mac Edition and 1024MB VRAM Radeon HD 6870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6630M Mac Edition 's Advantages

Lower TDP (26W vs 50W)

AMD Radeon HD 6870M 's Advantages

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (64.00GB/s vs 19.20GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6630M Mac Edition

0.48 TFLOPS

Radeon HD 6870M +125%

1.08 TFLOPS

Radeon HD 6630M Mac Edition

VS

Radeon HD 6870M

Graphics Card

Jan 2011

Release Date

Jan 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

600 MHz

Memory Clock

1000 MHz

Memory

256MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

19.20GB/s

Bandwidth

64.00GB/s

Render Config

6

Compute Units

10

-

480

Shading Units

800

24

TMUs

40

8

ROPs

16

-

L1 Cache

8 KB (per CU)

-

L2 Cache

256 KB

-

Theoretical Performance

4.000 GPixel/s

Pixel Rate

10.80 GPixel/s

12.00 GTexel/s

Texture Rate

27.00 GTexel/s

-

480.0 GFLOPS

FP32 (float)

1080 GFLOPS

-

Board Design

26W

TDP

50W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Whistler

GPU Name

Granville

Whistler LP

GPU Variant

Granville XT (216-0769024)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.716 billion

Transistors

1.04 billion

104 mm²

Die Size

166 mm²

Graphics Features

11.2 (11_0)

DirectX

11.2 (11_0)

4.4

OpenGL

4.4

1.2

OpenCL

1.2

N/A

Vulkan

N/A

-

5.0

Shader Model

5.0

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