ATI Mobility Radeon HD 4850 vs AMD Radeon R5 M255

VS

ATI Mobility Radeon HD 4850 AMD Radeon R5 M255

We compared two Mobile platform GPUs: 1024MB VRAM Mobility Radeon HD 4850 and 2GB VRAM Radeon R5 M255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Mobility Radeon HD 4850 's Advantages

Larger VRAM bandwidth (54.40GB/s vs 32.00GB/s)

416 additional rendering cores

AMD Radeon R5 M255 's Advantages

Released 5 years and 9 months late

Boost Clock940MHz

More VRAM (2GB vs 1GB)

Score

Benchmark

FP32 (float)

Mobility Radeon HD 4850 +11%

0.804 TFLOPS

Radeon R5 M255

0.721 TFLOPS

Mobility Radeon HD 4850

VS

Radeon R5 M255

Graphics Card

Jan 2009

Release Date

Oct 2014

M9x

Generation

Gem System

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

925 MHz

-

Boost Clock

940 MHz

850 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

2GB

GDDR3

Memory Type

DDR3

256bit

Memory Bus

128bit

54.40GB/s

Bandwidth

32.00GB/s

Render Config

-

SM Count

-

10

Compute Units

6

800

Shading Units

384

40

TMUs

24

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

256 KB

Theoretical Performance

8.048 GPixel/s

Pixel Rate

7.520 GPixel/s

20.12 GTexel/s

Texture Rate

22.56 GTexel/s

-

FP16 (half)

721.9 GFLOPS

804.8 GFLOPS

FP32 (float)

721.9 GFLOPS

161.0 GFLOPS

FP64 (double)

45.12 GFLOPS

Graphics Processor

M98

GPU Name

Topaz

M98 L2 (216-0732019)

GPU Variant

Topaz PRO (216-0858030)

TeraScale

Architecture

GCN 3.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

1.55 billion

256 mm²

Die Size

125 mm²

Board Design

Unknown

TDP

Unknown

-

Suggested PSU

-

Portable Device Dependent

Outputs

Portable Device Dependent

-

Power Connectors

-

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

-

CUDA

-

4.1

Shader Model

6.5

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