NVIDIA GeForce 840M vs NVIDIA GeForce GT 445M

VS

NVIDIA GeForce 840M

NVIDIA GeForce GT 445M

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 1024MB VRAM GeForce GT 445M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840M 's Advantages

Released 3 years and 6 months late

Boost Clock1124MHz

More VRAM (2GB vs 1024GB)

240 additional rendering cores

Lower TDP (33W vs 35W)

NVIDIA GeForce GT 445M 's Advantages

Larger VRAM bandwidth (40.00GB/s vs 16.02GB/s)

Score

Benchmark

FP32 (float)

GeForce 840M +163%

0.863 TFLOPS

GeForce GT 445M

0.328 TFLOPS

GeForce 840M

VS

GeForce GT 445M

Graphics Card

Mar 2014

Release Date

Sep 2010

GeForce 800M

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 2.0 x16

Clock Speeds

1029 MHz

Base Clock

-

1124 MHz

Boost Clock

-

1001 MHz

Memory Clock

625 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

40.00GB/s

Render Config

-

SM Count

3

384

Shading Units

144

16

TMUs

24

8

ROPs

16

-

64 KB (per SMM)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

3.420 GPixel/s

17.98 GTexel/s

Texture Rate

13.68 GTexel/s

-

863.2 GFLOPS

FP32 (float)

328.3 GFLOPS

26.98 GFLOPS

FP64 (double)

27.36 GFLOPS

Board Design

33W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM108

GPU Name

GF106

N15S-GT

GPU Variant

N11E-GE-A1

Maxwell

Architecture

Fermi

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

Unknown

Transistors

1.17 billion

Unknown

Die Size

238 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

1.1

1.3

Vulkan

N/A

5.0

CUDA

2.1

5.1

Shader Model

5.1

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