NVIDIA GeForce GT 650M Mac Edition vs NVIDIA GeForce GTX 660M

VS

NVIDIA GeForce GT 650M Mac Edition

NVIDIA GeForce GTX 660M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 650M Mac Edition and 1024MB VRAM GeForce GTX 660M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 650M Mac Edition 's Advantages

Larger VRAM bandwidth (80.26GB/s vs 64.00GB/s)

Lower TDP (45W vs 50W)

NVIDIA GeForce GTX 660M 's Advantages

Boost Clock950MHz

More VRAM (1024GB vs 512GB)

Score

Benchmark

FP32 (float)

GeForce GT 650M Mac Edition

0.691 TFLOPS

GeForce GTX 660M +5%

0.73 TFLOPS

GeForce GT 650M Mac Edition

VS

GeForce GTX 660M

Graphics Card

Jul 2012

Release Date

Mar 2012

GeForce 600M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-B (3.0)

Clock Speeds

-

Base Clock

835 MHz

-

Boost Clock

950 MHz

1254 MHz

Memory Clock

1000 MHz

Memory

512MB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

128bit

80.26GB/s

Bandwidth

64.00GB/s

Render Config

-

384

Shading Units

384

32

TMUs

32

16

ROPs

16

-

16 KB (per SMX)

L1 Cache

16 KB (per SMX)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

7.200 GPixel/s

Pixel Rate

7.600 GPixel/s

28.80 GTexel/s

Texture Rate

30.40 GTexel/s

-

691.2 GFLOPS

FP32 (float)

729.6 GFLOPS

28.80 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

45W

TDP

50W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK107

GPU Name

GK107

N13P-GT-W-A2

GPU Variant

N13E-GE-A2

Kepler

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

1.27 billion

118 mm²

Die Size

118 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.1

3.0

CUDA

3.0

5.1

Shader Model

5.1

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