NVIDIA GeForce 840M vs NVIDIA GeForce GT 650M

VS

NVIDIA GeForce 840M

NVIDIA GeForce GT 650M

We compared two Mobile platform GPUs: 2GB VRAM GeForce 840M and 1024MB VRAM GeForce GT 650M 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 Clock has increased by 18% (1124MHz vs 950MHz)

More VRAM (2GB vs 1024GB)

Lower TDP (33W vs 45W)

NVIDIA GeForce GT 650M 's Advantages

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

Score

Benchmark

FP32 (float)

GeForce 840M +18%

0.863 TFLOPS

GeForce GT 650M

0.73 TFLOPS

GeForce 840M

VS

GeForce GT 650M

Graphics Card

Mar 2014

Release Date

Mar 2012

GeForce 800M

Generation

GeForce 600M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1029 MHz

Base Clock

835 MHz

1124 MHz

Boost Clock

950 MHz

1001 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

DDR3

64bit

Memory Bus

128bit

16.02GB/s

Bandwidth

28.80GB/s

Render Config

-

384

Shading Units

384

16

TMUs

32

8

ROPs

16

-

64 KB (per SMM)

L1 Cache

16 KB (per SMX)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

8.992 GPixel/s

Pixel Rate

7.600 GPixel/s

17.98 GTexel/s

Texture Rate

30.40 GTexel/s

-

863.2 GFLOPS

FP32 (float)

729.6 GFLOPS

26.98 GFLOPS

FP64 (double)

30.40 GFLOPS

Board Design

33W

TDP

45W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GM108

GPU Name

GK107

N15S-GT

GPU Variant

N13P-GT-A2

Maxwell

Architecture

Kepler

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

1.27 billion

Unknown

Die Size

118 mm²

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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