AMD Radeon HD 6750M Mac Edition vs AMD Radeon HD 6990M

VS

AMD Radeon HD 6750M Mac Edition

AMD Radeon HD 6990M

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6750M Mac Edition and 2GB VRAM Radeon HD 6990M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6750M Mac Edition 's Advantages

Lower TDP (35W vs 100W)

AMD Radeon HD 6990M 's Advantages

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (115.2GB/s vs 50.82GB/s)

640 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6750M Mac Edition

0.574 TFLOPS

Radeon HD 6990M +179%

1.602 TFLOPS

Radeon HD 6750M Mac Edition

VS

Radeon HD 6990M

Graphics Card

Apr 2011

Release Date

Jul 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-B (3.0)

Clock Speeds

-

794 MHz

Memory Clock

900 MHz

Memory

512MB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

256bit

50.82GB/s

Bandwidth

115.2GB/s

Render Config

6

Compute Units

14

-

480

Shading Units

1120

24

TMUs

56

8

ROPs

32

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

256 KB

L2 Cache

512 KB

-

Theoretical Performance

4.784 GPixel/s

Pixel Rate

22.88 GPixel/s

14.35 GTexel/s

Texture Rate

40.04 GTexel/s

-

574.1 GFLOPS

FP32 (float)

1.602 TFLOPS

-

Board Design

35W

TDP

100W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Whistler

GPU Name

Blackcomb

Whistler PRO (216-0810005)

GPU Variant

Blackcomb XTX (216-0811030)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.716 billion

Transistors

1.7 billion

104 mm²

Die Size

212 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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