AMD Radeon HD 8670A vs AMD Radeon HD 7770M

VS

AMD Radeon HD 8670A

AMD Radeon HD 7770M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 1024MB VRAM Radeon HD 7770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Released 10 months late

AMD Radeon HD 7770M 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 16.00GB/s)

128 additional rendering cores

Lower TDP (32W vs 45W)

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

Radeon HD 7770M +49%

0.691 TFLOPS

Radeon HD 8670A

VS

Radeon HD 7770M

Graphics Card

Feb 2013

Release Date

Apr 2012

All-In-One

Generation

London

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

16.00GB/s

Bandwidth

64.00GB/s

Render Config

6

Compute Units

8

-

384

Shading Units

512

24

TMUs

32

8

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

4.800 GPixel/s

Pixel Rate

10.80 GPixel/s

14.40 GTexel/s

Texture Rate

21.60 GTexel/s

-

460.8 GFLOPS

FP32 (float)

691.2 GFLOPS

28.80 GFLOPS

FP64 (double)

43.20 GFLOPS

Board Design

45W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Mars

GPU Name

Chelsea

Mars XT

GPU Variant

Chelsea XT

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

1.5 billion

77 mm²

Die Size

123 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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