NVIDIA GeForce GT 420M vs NVIDIA GeForce 945A

VS

NVIDIA GeForce GT 420M

NVIDIA GeForce 945A

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 1024MB VRAM GeForce 945A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 420M 's Advantages

Lower TDP (23W vs 33W)

NVIDIA GeForce 945A 's Advantages

Released 4 years and 6 months late

Boost Clock1189MHz

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (40.10GB/s vs 25.60GB/s)

288 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

GeForce 945A +375%

0.913 TFLOPS

GeForce GT 420M

VS

GeForce 945A

Graphics Card

Sep 2010

Release Date

Mar 2015

GeForce 400M

Generation

GeForce 900A

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

Base Clock

1006 MHz

-

Boost Clock

1189 MHz

800 MHz

Memory Clock

1253 MHz

Memory

512MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

64bit

25.60GB/s

Bandwidth

40.10GB/s

Render Config

-

2

SM Count

-

96

Shading Units

384

16

TMUs

24

4

ROPs

8

-

64 KB (per SM)

L1 Cache

64 KB (per SMM)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

2.000 GPixel/s

Pixel Rate

9.512 GPixel/s

8.000 GTexel/s

Texture Rate

28.54 GTexel/s

-

192.0 GFLOPS

FP32 (float)

913.2 GFLOPS

16.00 GFLOPS

FP64 (double)

28.54 GFLOPS

Board Design

23W

TDP

33W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF108

GPU Name

GM108

N11P-GE-A1

GPU Variant

-

Fermi

Architecture

Maxwell

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.585 billion

Transistors

Unknown

116 mm²

Die Size

Unknown

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

3.0

N/A

Vulkan

1.3

2.1

CUDA

5.0

5.1

Shader Model

5.1

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