AMD Radeon HD 8590M vs AMD Radeon R5 A255

VS

AMD Radeon HD 8590M

AMD Radeon R5 A255

We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 8590M and 1024MB VRAM Radeon R5 A255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages

Released 10 months late

Boost Clock has increased by 14% (940MHz vs 825MHz)

Larger VRAM bandwidth (64.00GB/s vs 36.00GB/s)

64 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8590M

0.528 TFLOPS

Radeon R5 A255 +36%

0.721 TFLOPS

Radeon HD 8590M

VS

Radeon R5 A255

Graphics Card

Mar 2013

Release Date

Jan 2014

Solar System

Generation

All-In-One

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

750 MHz

Base Clock

925 MHz

825 MHz

Boost Clock

940 MHz

1125 MHz

Memory Clock

1000 MHz

Memory

1024MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

128bit

36.00GB/s

Bandwidth

64.00GB/s

Render Config

5

Compute Units

6

-

320

Shading Units

384

20

TMUs

24

8

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

256 KB

-

Theoretical Performance

6.600 GPixel/s

Pixel Rate

7.520 GPixel/s

16.50 GTexel/s

Texture Rate

22.56 GTexel/s

-

528.0 GFLOPS

FP32 (float)

721.9 GFLOPS

33.00 GFLOPS

FP64 (double)

-

Board Design

Unknown

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

-

Graphics Processor

Sun

GPU Name

Topaz

-

GPU Variant

Topaz PRO (216-0858030)

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.69 billion

Transistors

1.55 billion

56 mm²

Die Size

125 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2.170

-

5.1

Shader Model

6.5

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