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

VS

AMD Radeon HD 6990M Rebrand

NVIDIA GeForce 8400M G

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

Main Differences

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)

792 additional rendering cores

NVIDIA GeForce 8400M G 's Advantages

Lower TDP (10W vs 100W)

Score

Benchmark

FP32 (float)

Radeon HD 6990M Rebrand +9746%

1.28 TFLOPS

GeForce 8400M G

0.013 TFLOPS

Radeon HD 6990M Rebrand

VS

GeForce 8400M G

Graphics Card

Jul 2011

Release Date

May 2007

Vancouver

Generation

GeForce 8M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

1100 MHz

Memory Clock

400 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

64bit

70.40GB/s

Bandwidth

6.400GB/s

Render Config

14

Compute Units

-

SM Count

1

800

Shading Units

8

40

TMUs

8

16

ROPs

4

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

12.80 GPixel/s

Pixel Rate

1.600 GPixel/s

32.00 GTexel/s

Texture Rate

3.200 GTexel/s

-

1280 GFLOPS

FP32 (float)

12.80 GFLOPS

-

Board Design

100W

TDP

10W

-

No outputs

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Broadway

GPU Name

G86

Broadway XTX

GPU Variant

NB8M-SE

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

1.04 billion

Transistors

0.21 billion

166 mm²

Die Size

127 mm²

Graphics Features

11.2 (11_0)

DirectX

11.1 (10_0)

4.4

OpenGL

3.3

1.2

OpenCL

1.1

N/A

Vulkan

N/A

-

CUDA

1.1

5.0

Shader Model

4.0

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