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

VS

AMD Radeon HD 8670A

AMD Radeon HD 6490M Mac Edition

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 256MB VRAM Radeon HD 6490M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Released 1 years and 9 months late

More VRAM (1024GB vs 256GB)

224 additional rendering cores

AMD Radeon HD 6490M Mac Edition 's Advantages

Larger VRAM bandwidth (25.41GB/s vs 16.00GB/s)

Score

Benchmark

FP32 (float)

Radeon HD 8670A +92%

0.461 TFLOPS

Radeon HD 6490M Mac Edition

0.24 TFLOPS

Radeon HD 8670A

VS

Radeon HD 6490M Mac Edition

Graphics Card

Feb 2013

Release Date

May 2011

All-In-One

Generation

Vancouver

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

794 MHz

Memory

1024MB

Memory Size

256MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

64bit

16.00GB/s

Bandwidth

25.41GB/s

Render Config

6

Compute Units

2

-

384

Shading Units

160

24

TMUs

8

ROPs

4

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

128 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

3.000 GPixel/s

14.40 GTexel/s

Texture Rate

6.000 GTexel/s

-

460.8 GFLOPS

FP32 (float)

240.0 GFLOPS

28.80 GFLOPS

FP64 (double)

-

Board Design

45W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

Mars

GPU Name

Seymour

Mars XT

GPU Variant

Seymour XTX M2 (216-0809000)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

0.95 billion

Transistors

0.37 billion

77 mm²

Die Size

67 mm²

Graphics Features

12 (11_1)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

1.2

OpenCL

1.2

Vulkan

N/A

-

5.1

Shader Model

5.0

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