NVIDIA GeForce GTX 860M vs NVIDIA GeForce GT 640M Mac Edition

VS

NVIDIA GeForce GTX 860M NVIDIA GeForce GT 640M Mac Edition

We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 860M 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 860M 's Advantages

Released 11 months late

Boost Clock1085MHz

Larger VRAM bandwidth (80.19GB/s vs 40.00GB/s)

256 additional rendering cores

NVIDIA GeForce GT 640M Mac Edition 's Advantages

Lower TDP (32W vs 75W)

Score

Benchmark

FP32 (float)

GeForce GTX 860M +142%

1.389 TFLOPS

GeForce GT 640M Mac Edition

0.572 TFLOPS

GeForce GTX 860M

VS

GeForce GT 640M Mac Edition

Graphics Card

Jan 2014

Release Date

Feb 2013

GeForce 800M

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

1020 MHz

Base Clock

-

1085 MHz

Boost Clock

-

1253 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

512MB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

64bit

80.19GB/s

Bandwidth

40.00GB/s

Render Config

-

SM Count

-

Compute Units

-

640

Shading Units

384

40

TMUs

32

16

ROPs

8

-

Tensor Cores

-

RT Cores

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

128 KB

Theoretical Performance

17.36 GPixel/s

Pixel Rate

5.960 GPixel/s

43.40 GTexel/s

Texture Rate

23.84 GTexel/s

-

FP16 (half)

-

1389 GFLOPS

FP32 (float)

572.2 GFLOPS

43.40 GFLOPS

FP64 (double)

23.84 GFLOPS

Graphics Processor

GM107

GPU Name

GK107

N15P-GX-A1

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

Board Design

75W

TDP

32W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

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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