AMD Radeon HD 6990M vs AMD Radeon HD 8590M

VS

AMD Radeon HD 6990M

AMD Radeon HD 8590M

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 1024MB VRAM Radeon HD 8590M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M 's Advantages

More VRAM (2GB vs 1024GB)

Larger VRAM bandwidth (115.2GB/s vs 36.00GB/s)

800 additional rendering cores

AMD Radeon HD 8590M 's Advantages

Released 1 years and 8 months late

Boost Clock825MHz

Score

Benchmark

FP32 (float)

Radeon HD 6990M +203%

1.602 TFLOPS

Radeon HD 8590M

0.528 TFLOPS

Radeon HD 6990M

VS

Radeon HD 8590M

Graphics Card

Jul 2011

Release Date

Mar 2013

Vancouver

Generation

Solar System

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

750 MHz

-

Boost Clock

825 MHz

900 MHz

Memory Clock

1125 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

64bit

115.2GB/s

Bandwidth

36.00GB/s

Render Config

14

Compute Units

5

-

1120

Shading Units

320

56

TMUs

20

32

ROPs

8

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

22.88 GPixel/s

Pixel Rate

6.600 GPixel/s

40.04 GTexel/s

Texture Rate

16.50 GTexel/s

-

1.602 TFLOPS

FP32 (float)

528.0 GFLOPS

-

FP64 (double)

33.00 GFLOPS

Board Design

100W

TDP

Unknown

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Blackcomb

GPU Name

Sun

Blackcomb XTX (216-0811030)

GPU Variant

-

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

0.69 billion

212 mm²

Die Size

56 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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