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

VS

AMD Radeon HD 6770M Mac Edition

NVIDIA GeForce 8400M GS

We compared two Mobile platform GPUs: 512MB VRAM Radeon HD 6770M Mac Edition and 256MB VRAM GeForce 8400M GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

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

NVIDIA GeForce 8400M GS 's Advantages

Lower TDP (11W vs 35W)

Score

Benchmark

FP32 (float)

Radeon HD 6770M Mac Edition +2576%

0.696 TFLOPS

GeForce 8400M GS

0.026 TFLOPS

Radeon HD 6770M Mac Edition

VS

GeForce 8400M GS

Graphics Card

Jan 2011

Release Date

May 2007

Vancouver

Generation

GeForce 8M

Mobile

Type

Mobile

MXM-A (3.0)

Bus Interface

MXM-I

Clock Speeds

-

900 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

DDR2

128bit

Memory Bus

64bit

57.60GB/s

Bandwidth

6.400GB/s

Render Config

6

Compute Units

-

SM Count

2

480

Shading Units

16

24

TMUs

8

ROPs

4

-

8 KB (per CU)

L1 Cache

-

256 KB

L2 Cache

16 KB

-

Theoretical Performance

5.800 GPixel/s

Pixel Rate

1.600 GPixel/s

17.40 GTexel/s

Texture Rate

3.200 GTexel/s

-

696.0 GFLOPS

FP32 (float)

25.60 GFLOPS

-

Board Design

35W

TDP

11W

-

No outputs

Outputs

No outputs

-

Graphics Processor

Whistler

GPU Name

G86

Whistler XT (216-0810001)

GPU Variant

NB8M-GS

TeraScale 2

Architecture

Tesla

TSMC

Foundry

TSMC

40 nm

Process Size

80 nm

0.716 billion

Transistors

0.21 billion

104 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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