AMD Radeon HD 6490M Mac Edition vs AMD Radeon HD 7550M

VS

AMD Radeon HD 6490M Mac Edition

AMD Radeon HD 7550M

We compared two Mobile platform GPUs: 256MB VRAM Radeon HD 6490M Mac Edition and 1024MB VRAM Radeon HD 7550M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6490M Mac Edition 's Advantages

Larger VRAM bandwidth (25.41GB/s vs 14.40GB/s)

AMD Radeon HD 7550M 's Advantages

Released 8 months late

Boost Clock550MHz

More VRAM (1024GB vs 256GB)

240 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Radeon HD 7550M +83%

0.44 TFLOPS

Radeon HD 6490M Mac Edition

VS

Radeon HD 7550M

Graphics Card

May 2011

Release Date

Jan 2012

Vancouver

Generation

London

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

Base Clock

450 MHz

-

Boost Clock

550 MHz

794 MHz

Memory Clock

900 MHz

Memory

256MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

64bit

25.41GB/s

Bandwidth

14.40GB/s

Render Config

2

Compute Units

5

-

160

Shading Units

400

8

TMUs

20

4

ROPs

8

-

8 KB (per CU)

L1 Cache

-

128 KB

L2 Cache

-

Theoretical Performance

3.000 GPixel/s

Pixel Rate

4.400 GPixel/s

6.000 GTexel/s

Texture Rate

11.00 GTexel/s

-

240.0 GFLOPS

FP32 (float)

440.0 GFLOPS

-

Board Design

Unknown

TDP

14W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Seymour

GPU Name

Thames

Seymour XTX M2 (216-0809000)

GPU Variant

Thames LP

TeraScale 2

Architecture

TeraScale 2

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.37 billion

Transistors

0.716 billion

67 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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