NVIDIA GeForce GTX 980M vs NVIDIA GeForce GT 640M

VS

NVIDIA GeForce GTX 980M

NVIDIA GeForce GT 640M

We compared two Mobile platform GPUs: 8GB VRAM GeForce GTX 980M and 2GB VRAM GeForce GT 640M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 980M 's Advantages

Released 2 years and 7 months late

Boost Clock1127MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (160.4GB/s vs 28.80GB/s)

1152 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 980M +621%

3.462 TFLOPS

GeForce GT 640M

0.48 TFLOPS

GeForce GTX 980M

VS

GeForce GT 640M

Graphics Card

Oct 2014

Release Date

Mar 2012

GeForce 900M

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

1038 MHz

Base Clock

-

1127 MHz

Boost Clock

-

1253 MHz

Memory Clock

900 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

160.4GB/s

Bandwidth

28.80GB/s

Render Config

-

1536

Shading Units

384

96

TMUs

32

64

ROPs

16

-

48 KB (per SMM)

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

256 KB

-

Theoretical Performance

72.13 GPixel/s

Pixel Rate

5.000 GPixel/s

108.2 GTexel/s

Texture Rate

20.00 GTexel/s

-

3.462 TFLOPS

FP32 (float)

480.0 GFLOPS

108.2 GFLOPS

FP64 (double)

20.00 GFLOPS

Board Design

Unknown

TDP

32W

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

GM204

GPU Name

GK107

N16E-GX-A1

GPU Variant

N13P-GS

Maxwell 2.0

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5.2 billion

Transistors

1.27 billion

398 mm²

Die Size

118 mm²

Graphics Features

12 (12_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.3

Vulkan

1.1

5.2

CUDA

3.0

6.7 (6.4)

Shader Model

5.1

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