NVIDIA GeForce 840M vs NVIDIA GeForce GT 555M

VS

NVIDIA GeForce 840M NVIDIA GeForce GT 555M

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 2GB VRAM GeForce GT 555M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 840M 's Advantages

Released 2 years late

Boost Clock1124MHz

240 additional rendering cores

Lower TDP (33W vs 35W)

NVIDIA GeForce GT 555M 's Advantages

Larger VRAM bandwidth (28.80GB/s vs 16.02GB/s)

Score

Benchmark

FP32 (float)

GeForce 840M +121%

0.863 TFLOPS

GeForce GT 555M

0.389 TFLOPS

GeForce 840M

VS

GeForce GT 555M

Graphics Card

Mar 2014

Release Date

Mar 2012

GeForce 800M

Generation

GeForce 500M

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

900 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

28.80GB/s

Render Config

-

SM Count

2

-

Compute Units

-

384

Shading Units

144

16

TMUs

24

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

64 KB (per SMM)

L1 Cache

64 KB (per SM)

1024 KB

L2 Cache

256 KB

Theoretical Performance

8.992 GPixel/s

Pixel Rate

2.700 GPixel/s

17.98 GTexel/s

Texture Rate

16.20 GTexel/s

-

FP16 (half)

-

863.2 GFLOPS

FP32 (float)

388.8 GFLOPS

26.98 GFLOPS

FP64 (double)

32.40 GFLOPS

Graphics Processor

GM108

GPU Name

GF116

N15S-GT

GPU Variant

N12E-GE2-A1

Maxwell

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

40 nm

Unknown

Transistors

1.17 billion

Unknown

Die Size

238 mm²

Board Design

33W

TDP

35W

-

Suggested PSU

-

No outputs

Outputs

No outputs

-

Power Connectors

-

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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