NVIDIA GeForce 840A vs NVIDIA GeForce 845M

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We compared two Mobile platform GPUs: 2GB VRAM GeForce 840A and 2GB VRAM GeForce 845M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 845M 's Advantages

Released 1 years and 5 months late

Boost Clock has increased by 5% (1176MHz vs 1124MHz)

Larger VRAM bandwidth (40.10GB/s vs 16.02GB/s)

Score

Benchmark

FP32 (float)

GeForce 840A

0.863 TFLOPS

GeForce 845M +4%

0.903 TFLOPS

GeForce 840A

VS

GeForce 845M

Graphics Card

Mar 2014

Release Date

Aug 2015

GeForce 800A

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x8

Clock Speeds

1029 MHz

Base Clock

1071 MHz

1124 MHz

Boost Clock

1176 MHz

1001 MHz

Memory Clock

1253 MHz

Memory

2GB

Memory Size

2GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

64bit

16.02GB/s

Bandwidth

40.10GB/s

Render Config

-

SM Count

-

Compute Units

-

384

Shading Units

384

16

TMUs

32

8

ROPs

16

-

Tensor Cores

-

RT Cores

-

64 KB (per SMM)

L1 Cache

64 KB (per SMM)

1024 KB

L2 Cache

1024 KB

Theoretical Performance

8.992 GPixel/s

Pixel Rate

18.82 GPixel/s

17.98 GTexel/s

Texture Rate

37.63 GTexel/s

-

FP16 (half)

-

863.2 GFLOPS

FP32 (float)

903.2 GFLOPS

26.98 GFLOPS

FP64 (double)

28.22 GFLOPS

Graphics Processor

GM108

GPU Name

GM108

-

GPU Variant

-

Maxwell

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

Unknown

Transistors

Unknown

Die Size

Unknown

Board Design

33W

TDP

33W

-

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

3.0

1.3

Vulkan

1.3

5.0

CUDA

5.0

5.1

Shader Model

5.1

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