AMD Radeon HD 6490M Mac Edition vs ATI Mobility Radeon HD 4650

VS

AMD Radeon HD 6490M Mac Edition

ATI Mobility Radeon HD 4650

We compared two Mobile platform GPUs: 256MB VRAM Radeon HD 6490M Mac Edition and 512MB VRAM Mobility Radeon HD 4650 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

Released 2 years and 4 months late

Larger VRAM bandwidth (25.41GB/s vs 19.20GB/s)

ATI Mobility Radeon HD 4650 's Advantages

More VRAM (512GB vs 256GB)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Mobility Radeon HD 4650 +33%

0.32 TFLOPS

Radeon HD 6490M Mac Edition

VS

Mobility Radeon HD 4650

Graphics Card

May 2011

Release Date

Jan 2009

Vancouver

Generation

M9x

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

794 MHz

Memory Clock

600 MHz

Memory

256MB

Memory Size

512MB

GDDR5

Memory Type

DDR2

64bit

Memory Bus

128bit

25.41GB/s

Bandwidth

19.20GB/s

Render Config

2

Compute Units

4

-

160

Shading Units

320

8

TMUs

32

4

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

128 KB

-

Theoretical Performance

3.000 GPixel/s

Pixel Rate

4.000 GPixel/s

6.000 GTexel/s

Texture Rate

16.00 GTexel/s

-

240.0 GFLOPS

FP32 (float)

320.0 GFLOPS

-

Board Design

Unknown

TDP

35W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Seymour

GPU Name

M96

Seymour XTX M2 (216-0809000)

GPU Variant

-

TeraScale 2

Architecture

TeraScale

TSMC

Foundry

TSMC

40 nm

Process Size

55 nm

0.37 billion

Transistors

0.514 billion

67 mm²

Die Size

146 mm²

Graphics Features

11.2 (11_0)

DirectX

10.1 (10_1)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

5.0

Shader Model

4.1

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