ATI Mobility Radeon HD 4670 vs AMD Radeon R5 M255

VS

ATI Mobility Radeon HD 4670

AMD Radeon R5 M255

We compared two Mobile platform GPUs: 512MB VRAM Mobility Radeon HD 4670 and 2GB VRAM Radeon R5 M255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages

Released 5 years and 9 months late

Boost Clock940MHz

More VRAM (2GB vs 512GB)

Larger VRAM bandwidth (32.00GB/s vs 25.60GB/s)

64 additional rendering cores

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4670

0.432 TFLOPS

Radeon R5 M255 +66%

0.721 TFLOPS

Mobility Radeon HD 4670

VS

Radeon R5 M255

Graphics Card

Jan 2009

Release Date

Oct 2014

M9x

Generation

Gem System

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

800 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

128bit

Memory Bus

128bit

25.60GB/s

Bandwidth

32.00GB/s

Render Config

4

Compute Units

6

-

320

Shading Units

384

32

TMUs

24

8

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

5.400 GPixel/s

Pixel Rate

7.520 GPixel/s

21.60 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

721.9 GFLOPS

432.0 GFLOPS

FP32 (float)

721.9 GFLOPS

-

FP64 (double)

45.12 GFLOPS

Board Design

35W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

M96

GPU Name

Topaz

M96 XT (216-0729051)

GPU Variant

Topaz PRO (216-0858030)

TeraScale

Architecture

GCN 3.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.514 billion

Transistors

1.55 billion

146 mm²

Die Size

125 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3

OpenGL

4.6

1.1

OpenCL

2.1

N/A

Vulkan

1.2.170

-

4.1

Shader Model

6.5

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