AMD Radeon HD 8670A vs AMD Radeon HD 6770M

VS

AMD Radeon HD 8670A

AMD Radeon HD 6770M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 1024MB VRAM Radeon HD 6770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Released 2 years and 1 months late

AMD Radeon HD 6770M 's Advantages

Larger VRAM bandwidth (57.60GB/s vs 16.00GB/s)

96 additional rendering cores

Lower TDP (35W vs 45W)

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

Radeon HD 6770M +50%

0.696 TFLOPS

Radeon HD 8670A

VS

Radeon HD 6770M

Graphics Card

Feb 2013

Release Date

Jan 2011

All-In-One

Generation

Vancouver

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-A (3.0)

Clock Speeds

-

1000 MHz

Memory Clock

900 MHz

Memory

1024MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

16.00GB/s

Bandwidth

57.60GB/s

Render Config

6

Compute Units

6

-

384

Shading Units

480

24

TMUs

24

8

ROPs

8

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

5.800 GPixel/s

14.40 GTexel/s

Texture Rate

17.40 GTexel/s

-

460.8 GFLOPS

FP32 (float)

696.0 GFLOPS

28.80 GFLOPS

FP64 (double)

-

Board Design

45W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Mars

GPU Name

Whistler

Mars XT

GPU Variant

Whistler XT (216-0810001)

GCN 1.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

0.95 billion

Transistors

0.716 billion

77 mm²

Die Size

104 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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