ATI Mobility Radeon HD 2600 XT vs AMD Radeon HD 6990M

VS

ATI Mobility Radeon HD 2600 XT

AMD Radeon HD 6990M

We compared two Mobile platform GPUs: 256MB VRAM Mobility Radeon HD 2600 XT 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 6990M 's Advantages

Released 4 years and 2 months late

More VRAM (2GB vs 256GB)

Larger VRAM bandwidth (115.2GB/s vs 24.00GB/s)

1000 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 2600 XT

0.163 TFLOPS

Radeon HD 6990M +882%

1.602 TFLOPS

Mobility Radeon HD 2600 XT

VS

Radeon HD 6990M

Graphics Card

May 2007

Release Date

Jul 2011

M7x

Generation

Vancouver

Mobile

Type

Mobile

MXM-II

Bus Interface

MXM-B (3.0)

Clock Speeds

-

750 MHz

Memory Clock

900 MHz

Memory

256MB

Memory Size

2GB

GDDR3

Memory Type

GDDR5

128bit

Memory Bus

256bit

24.00GB/s

Bandwidth

115.2GB/s

Render Config

3

Compute Units

14

-

120

Shading Units

1120

8

TMUs

56

4

ROPs

32

-

L1 Cache

8 KB (per CU)

64 KB

L2 Cache

512 KB

-

Theoretical Performance

2.720 GPixel/s

Pixel Rate

22.88 GPixel/s

5.440 GTexel/s

Texture Rate

40.04 GTexel/s

-

163.2 GFLOPS

FP32 (float)

1.602 TFLOPS

-

Board Design

Unknown

TDP

100W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

M76

GPU Name

Blackcomb

M76 XT-M (216XJBKA13FG)

GPU Variant

Blackcomb XTX (216-0811030)

TeraScale

Architecture

TeraScale 2

TSMC

Foundry

TSMC

65 nm

Process Size

40 nm

0.39 billion

Transistors

1.7 billion

153 mm²

Die Size

212 mm²

Graphics Features

10.0 (10_0)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

N/A

OpenCL

1.2

N/A

Vulkan

N/A

-

4.0

Shader Model

5.0

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