AMD Radeon HD 8870M vs AMD Radeon HD 8670A

VS

AMD Radeon HD 8870M

AMD Radeon HD 8670A

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8870M 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 8870M 's Advantages

Boost Clock775MHz

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (72.00GB/s vs 16.00GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8870M +115%

0.992 TFLOPS

Radeon HD 8670A

0.461 TFLOPS

Radeon HD 8870M

VS

Radeon HD 8670A

Graphics Card

Apr 2013

Release Date

Feb 2013

Solar System

Generation

All-In-One

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-A (3.0)

Clock Speeds

725 MHz

Base Clock

-

775 MHz

Boost Clock

-

1125 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

72.00GB/s

Bandwidth

16.00GB/s

Render Config

10

Compute Units

6

-

640

Shading Units

384

40

TMUs

24

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

12.40 GPixel/s

Pixel Rate

4.800 GPixel/s

31.00 GTexel/s

Texture Rate

14.40 GTexel/s

-

992.0 GFLOPS

FP32 (float)

460.8 GFLOPS

62.00 GFLOPS

FP64 (double)

28.80 GFLOPS

Board Design

Unknown

TDP

45W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Venus

GPU Name

Mars

Venus XT (216-0846000)

GPU Variant

Mars XT

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

0.95 billion

123 mm²

Die Size

77 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

1.2

1.2.170

Vulkan

1.2

-

6.5 (5.1)

Shader Model

5.1

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