AMD Radeon HD 6490M Mac Edition vs AMD Radeon HD 8670A

VS

AMD Radeon HD 6490M Mac Edition

AMD Radeon HD 8670A

We compared two Mobile platform GPUs: 256MB VRAM Radeon HD 6490M Mac Edition and 1024MB VRAM Radeon HD 8670A 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 16.00GB/s)

AMD Radeon HD 8670A 's Advantages

Released 1 years and 9 months late

More VRAM (1024GB vs 256GB)

224 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Radeon HD 8670A +92%

0.461 TFLOPS

Radeon HD 6490M Mac Edition

VS

Radeon HD 8670A

Graphics Card

May 2011

Release Date

Feb 2013

Vancouver

Generation

All-In-One

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

MXM-A (3.0)

Clock Speeds

-

794 MHz

Memory Clock

1000 MHz

Memory

256MB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

64bit

Memory Bus

64bit

25.41GB/s

Bandwidth

16.00GB/s

Render Config

2

Compute Units

6

-

160

Shading Units

384

8

TMUs

24

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

4.800 GPixel/s

6.000 GTexel/s

Texture Rate

14.40 GTexel/s

-

240.0 GFLOPS

FP32 (float)

460.8 GFLOPS

-

FP64 (double)

28.80 GFLOPS

Board Design

Unknown

TDP

45W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Seymour

GPU Name

Mars

Seymour XTX M2 (216-0809000)

GPU Variant

Mars XT

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.37 billion

Transistors

0.95 billion

67 mm²

Die Size

77 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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