NVIDIA GeForce GTX 660M Mac Edition vs NVIDIA GeForce 8400M G

VS

NVIDIA GeForce GTX 660M Mac Edition NVIDIA GeForce 8400M G

We compared two Mobile platform GPUs: 512MB VRAM GeForce GTX 660M Mac Edition and 256MB VRAM GeForce 8400M G to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660M Mac Edition 's Advantages

Released 5 years and 11 months late

More VRAM (512GB vs 256GB)

Larger VRAM bandwidth (80.00GB/s vs 6.400GB/s)

376 additional rendering cores

NVIDIA GeForce 8400M G 's Advantages

Lower TDP (10W vs 50W)

Score

Benchmark

FP32 (float)

GeForce GTX 660M Mac Edition +5515%

0.73 TFLOPS

GeForce 8400M G

0.013 TFLOPS

GeForce GTX 660M Mac Edition

VS

GeForce 8400M G

Graphics Card

Apr 2013

Release Date

May 2007

GeForce 600M

Generation

GeForce 8M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 1.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1250 MHz

Memory Clock

400 MHz

Memory

512MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

64bit

80.00GB/s

Bandwidth

6.400GB/s

Render Config

-

SM Count

1

-

Compute Units

-

384

Shading Units

8

32

TMUs

8

16

ROPs

4

-

Tensor Cores

-

RT Cores

-

16 KB (per SMX)

L1 Cache

-

256 KB

L2 Cache

16 KB

Theoretical Performance

7.600 GPixel/s

Pixel Rate

1.600 GPixel/s

30.40 GTexel/s

Texture Rate

3.200 GTexel/s

-

FP16 (half)

-

729.6 GFLOPS

FP32 (float)

12.80 GFLOPS

30.40 GFLOPS

FP64 (double)

-

Graphics Processor

GK107

GPU Name

G86

-

GPU Variant

NB8M-SE

Kepler

Architecture

Tesla

TSMC

Foundry

TSMC

28 nm

Process Size

80 nm

1.27 billion

Transistors

0.21 billion

118 mm²

Die Size

127 mm²

Board Design

50W

TDP

10W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (11_0)

DirectX

11.1 (10_0)

4.6

OpenGL

3.3

3.0

OpenCL

1.1

Vulkan

N/A

3.0

CUDA

1.1

5.1

Shader Model

4.0

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