NVIDIA GeForce 8400M GS vs AMD Radeon HD 6990M Rebrand

VS

NVIDIA GeForce 8400M GS

AMD Radeon HD 6990M Rebrand

We compared two Mobile platform GPUs: 256MB VRAM GeForce 8400M GS and 1024MB VRAM Radeon HD 6990M Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 8400M GS 's Advantages

Lower TDP (11W vs 100W)

AMD Radeon HD 6990M Rebrand 's Advantages

Released 4 years and 2 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (70.40GB/s vs 6.400GB/s)

784 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400M GS

0.026 TFLOPS

Radeon HD 6990M Rebrand +4823%

1.28 TFLOPS

GeForce 8400M GS

VS

Radeon HD 6990M Rebrand

Graphics Card

May 2007

Release Date

Jul 2011

GeForce 8M

Generation

Vancouver

Mobile

Type

Mobile

MXM-I

Bus Interface

MXM-B (3.0)

Clock Speeds

-

400 MHz

Memory Clock

1100 MHz

Memory

256MB

Memory Size

1024MB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

128bit

6.400GB/s

Bandwidth

70.40GB/s

Render Config

-

Compute Units

14

2

SM Count

-

16

Shading Units

800

8

TMUs

40

4

ROPs

16

-

L1 Cache

8 KB (per CU)

16 KB

L2 Cache

256 KB

-

Theoretical Performance

1.600 GPixel/s

Pixel Rate

12.80 GPixel/s

3.200 GTexel/s

Texture Rate

32.00 GTexel/s

-

25.60 GFLOPS

FP32 (float)

1280 GFLOPS

-

Board Design

11W

TDP

100W

-

No outputs

Outputs

No outputs

-

Graphics Processor

G86

GPU Name

Broadway

NB8M-GS

GPU Variant

Broadway XTX

Tesla

Architecture

TeraScale 2

TSMC

Foundry

TSMC

80 nm

Process Size

40 nm

0.21 billion

Transistors

1.04 billion

127 mm²

Die Size

166 mm²

Graphics Features

11.1 (10_0)

DirectX

11.2 (11_0)

3.3

OpenGL

4.4

1.1

OpenCL

1.2

N/A

Vulkan

N/A

1.1

CUDA

-

4.0

Shader Model

5.0

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