AMD Radeon HD 6990M vs AMD Radeon HD 8970M

VS

AMD Radeon HD 6990M

AMD Radeon HD 8970M

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 4GB VRAM Radeon HD 8970M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8970M 's Advantages

Released 1 years and 10 months late

Boost Clock900MHz

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (153.6GB/s vs 115.2GB/s)

160 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6990M

1.602 TFLOPS

Radeon HD 8970M +43%

2.304 TFLOPS

Radeon HD 6990M

VS

Radeon HD 8970M

Graphics Card

Jul 2011

Release Date

May 2013

Vancouver

Generation

Solar System

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

900 MHz

Memory Clock

1200 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

115.2GB/s

Bandwidth

153.6GB/s

Render Config

14

Compute Units

20

-

1120

Shading Units

1280

56

TMUs

80

32

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

-

Theoretical Performance

22.88 GPixel/s

Pixel Rate

28.80 GPixel/s

40.04 GTexel/s

Texture Rate

72.00 GTexel/s

-

1.602 TFLOPS

FP32 (float)

2.304 TFLOPS

-

FP64 (double)

144.0 GFLOPS

Board Design

100W

TDP

100W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Blackcomb

GPU Name

Neptune

Blackcomb XTX (216-0811030)

GPU Variant

Neptune XT (216-0847000)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.7 billion

Transistors

2.8 billion

212 mm²

Die Size

212 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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