NVIDIA GeForce 8400M GS vs AMD Radeon HD 6770M Mac Edition

VS

NVIDIA GeForce 8400M GS

AMD Radeon HD 6770M Mac Edition

We compared two Mobile platform GPUs: 256MB VRAM GeForce 8400M GS and 512MB VRAM Radeon HD 6770M Mac Edition 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 35W)

AMD Radeon HD 6770M Mac Edition 's Advantages

Released 3 years and 8 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (57.60GB/s vs 6.400GB/s)

464 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce 8400M GS

0.026 TFLOPS

Radeon HD 6770M Mac Edition +2576%

0.696 TFLOPS

GeForce 8400M GS

VS

Radeon HD 6770M Mac Edition

Graphics Card

May 2007

Release Date

Jan 2011

GeForce 8M

Generation

Vancouver

Mobile

Type

Mobile

MXM-I

Bus Interface

MXM-A (3.0)

Clock Speeds

-

400 MHz

Memory Clock

900 MHz

Memory

256MB

Memory Size

512MB

DDR2

Memory Type

GDDR5

64bit

Memory Bus

128bit

6.400GB/s

Bandwidth

57.60GB/s

Render Config

-

Compute Units

6

2

SM Count

-

16

Shading Units

480

8

TMUs

24

4

ROPs

8

-

L1 Cache

8 KB (per CU)

16 KB

L2 Cache

256 KB

-

Theoretical Performance

1.600 GPixel/s

Pixel Rate

5.800 GPixel/s

3.200 GTexel/s

Texture Rate

17.40 GTexel/s

-

25.60 GFLOPS

FP32 (float)

696.0 GFLOPS

-

Board Design

11W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

G86

GPU Name

Whistler

NB8M-GS

GPU Variant

Whistler XT (216-0810001)

Tesla

Architecture

TeraScale 2

TSMC

Foundry

TSMC

80 nm

Process Size

40 nm

0.21 billion

Transistors

0.716 billion

127 mm²

Die Size

104 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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