NVIDIA GeForce GTX 950M vs NVIDIA GeForce GT 640M Mac Edition

VS

NVIDIA GeForce GTX 950M

NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 950M and 512MB VRAM GeForce GT 640M Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 950M 's Advantages

Released 2 years and 1 months late

Boost Clock1124MHz

More VRAM (4GB vs 512GB)

256 additional rendering cores

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Larger VRAM bandwidth (40.00GB/s vs 28.80GB/s)

Lower TDP (32W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GTX 950M +151%

1.439 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

GeForce GTX 950M

VS

GeForce GT 640M Mac Edition

Graphics Card

Mar 2015

Release Date

Feb 2013

GeForce 900M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

993 MHz

Base Clock

-

1124 MHz

Boost Clock

-

900 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

512MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

64bit

28.80GB/s

Bandwidth

40.00GB/s

Render Config

-

640

Shading Units

384

40

TMUs

32

16

ROPs

8

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

128 KB

-

Theoretical Performance

17.98 GPixel/s

Pixel Rate

5.960 GPixel/s

44.96 GTexel/s

Texture Rate

23.84 GTexel/s

-

1439 GFLOPS

FP32 (float)

572.2 GFLOPS

44.96 GFLOPS

FP64 (double)

23.84 GFLOPS

Board Design

75W

TDP

32W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM107

GPU Name

GK107

N16P-GT

GPU Variant

N13P-GS

Maxwell

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.87 billion

Transistors

1.27 billion

148 mm²

Die Size

118 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

5.0

CUDA

3.0

5.1

Shader Model

5.1

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