AMD Radeon HD 6990M vs AMD Radeon HD 6750M

VS

AMD Radeon HD 6990M

AMD Radeon HD 6750M

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 1024MB VRAM Radeon HD 6750M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M 's Advantages

Released 6 months late

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (115.2GB/s vs 25.60GB/s)

640 additional rendering cores

AMD Radeon HD 6750M 's Advantages

Lower TDP (35W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 6990M +178%

1.602 TFLOPS

Radeon HD 6750M

0.576 TFLOPS

Radeon HD 6990M

VS

Radeon HD 6750M

Graphics Card

Jul 2011

Release Date

Jan 2011

Vancouver

Generation

Vancouver

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

MXM-A (3.0)

Clock Speeds

-

900 MHz

Memory Clock

800 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR3

256bit

Memory Bus

128bit

115.2GB/s

Bandwidth

25.60GB/s

Render Config

14

Compute Units

6

-

1120

Shading Units

480

56

TMUs

24

32

ROPs

8

-

8 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

256 KB

-

Theoretical Performance

22.88 GPixel/s

Pixel Rate

4.800 GPixel/s

40.04 GTexel/s

Texture Rate

14.40 GTexel/s

-

1.602 TFLOPS

FP32 (float)

576.0 GFLOPS

-

Board Design

100W

TDP

35W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Blackcomb

GPU Name

Whistler

Blackcomb XTX (216-0811030)

GPU Variant

Whistler PRO (216-0810005)

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

1.7 billion

Transistors

0.716 billion

212 mm²

Die Size

104 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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