AMD Radeon HD 8670A vs ATI Mobility Radeon HD 4870

VS

AMD Radeon HD 8670A

ATI Mobility Radeon HD 4870

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8670A and 512MB VRAM Mobility Radeon HD 4870 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8670A 's Advantages

Released 4 years and 1 months late

More VRAM (1024GB vs 512GB)

ATI Mobility Radeon HD 4870 's Advantages

Larger VRAM bandwidth (56.83GB/s vs 16.00GB/s)

416 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8670A

0.461 TFLOPS

Mobility Radeon HD 4870 +90%

0.88 TFLOPS

Radeon HD 8670A

VS

Mobility Radeon HD 4870

Graphics Card

Feb 2013

Release Date

Jan 2009

All-In-One

Generation

M9x

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1000 MHz

Memory Clock

888 MHz

Memory

1024MB

Memory Size

512MB

DDR3

Memory Type

GDDR3

64bit

Memory Bus

256bit

16.00GB/s

Bandwidth

56.83GB/s

Render Config

6

Compute Units

10

-

384

Shading Units

800

24

TMUs

40

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

8.800 GPixel/s

14.40 GTexel/s

Texture Rate

22.00 GTexel/s

-

460.8 GFLOPS

FP32 (float)

880.0 GFLOPS

28.80 GFLOPS

FP64 (double)

176.0 GFLOPS

Board Design

45W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Power Connectors

None

Graphics Processor

Mars

GPU Name

M98

Mars XT

GPU Variant

M98 XT L2 (216-0732023)

GCN 1.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

0.95 billion

Transistors

0.956 billion

77 mm²

Die Size

256 mm²

Graphics Features

12 (11_1)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

1.2

OpenCL

1.1

1.2

Vulkan

N/A

-

5.1

Shader Model

4.1

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