NVIDIA GeForce GTX 980 Mobile vs NVIDIA GeForce GT 640M

VS

NVIDIA GeForce GTX 980 Mobile NVIDIA GeForce GT 640M

We compared two Mobile platform GPUs: 8GB VRAM GeForce GTX 980 Mobile 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 980 Mobile 's Advantages

Released 3 years and 6 months late

Boost Clock1140MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (224.4GB/s vs 28.80GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GTX 980 Mobile +872%

4.669 TFLOPS

GeForce GT 640M

0.48 TFLOPS

GeForce GTX 980 Mobile

VS

GeForce GT 640M

Graphics Card

Sep 2015

Release Date

Mar 2012

GeForce 900M

Generation

GeForce 600M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 3.0 x16

Clock Speeds

1064 MHz

Base Clock

-

1140 MHz

Boost Clock

-

1753 MHz

Memory Clock

900 MHz

Memory

8GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

128bit

224.4GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

-

Compute Units

-

2048

Shading Units

384

128

TMUs

32

64

ROPs

16

-

Tensor Cores

-

RT Cores

-

48 KB (per SMM)

L1 Cache

16 KB (per SMX)

2 MB

L2 Cache

256 KB

Theoretical Performance

72.96 GPixel/s

Pixel Rate

5.000 GPixel/s

145.9 GTexel/s

Texture Rate

20.00 GTexel/s

-

FP16 (half)

-

4.669 TFLOPS

FP32 (float)

480.0 GFLOPS

145.9 GFLOPS

FP64 (double)

20.00 GFLOPS

Graphics Processor

GM204

GPU Name

GK107

N16E-GXX-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

Board Design

Unknown

TDP

32W

-

Suggested PSU

-

Portable Device Dependent

Outputs

No outputs

None

Power Connectors

-

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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