NVIDIA GeForce 820M vs NVIDIA GeForce 945A

VS

NVIDIA GeForce 820M

NVIDIA GeForce 945A

We compared two Mobile platform GPUs: 2GB VRAM GeForce 820M and 1024MB VRAM GeForce 945A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce 820M 's Advantages

More VRAM (2GB vs 1024GB)

NVIDIA GeForce 945A 's Advantages

Boost Clock1189MHz

Larger VRAM bandwidth (40.10GB/s vs 28.83GB/s)

Lower TDP (33W vs 45W)

Score

Benchmark

FP32 (float)

GeForce 820M

0.622 TFLOPS

GeForce 945A +46%

0.913 TFLOPS

GeForce 820M

VS

GeForce 945A

Graphics Card

Mar 2015

Release Date

Mar 2015

GeForce 800M

Generation

GeForce 900A

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1006 MHz

-

Boost Clock

1189 MHz

901 MHz

Memory Clock

1253 MHz

Memory

2GB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

64bit

28.83GB/s

Bandwidth

40.10GB/s

Render Config

-

384

Shading Units

384

32

TMUs

24

16

ROPs

8

-

16 KB (per SMX)

L1 Cache

64 KB (per SMM)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

6.480 GPixel/s

Pixel Rate

9.512 GPixel/s

25.92 GTexel/s

Texture Rate

28.54 GTexel/s

-

622.1 GFLOPS

FP32 (float)

913.2 GFLOPS

25.92 GFLOPS

FP64 (double)

28.54 GFLOPS

Board Design

45W

TDP

33W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GK107

GPU Name

GM108

-

Kepler

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.27 billion

Transistors

Unknown

118 mm²

Die Size

Unknown

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

3.0

OpenCL

3.0

1.1

Vulkan

1.3

3.0

CUDA

5.0

5.1

Shader Model

5.1

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