NVIDIA GeForce GT 420M vs NVIDIA GeForce GT 445M

VS

NVIDIA GeForce GT 420M

NVIDIA GeForce GT 445M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 1024MB VRAM GeForce GT 445M 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 35W)

NVIDIA GeForce GT 445M 's Advantages

More VRAM (1024GB vs 512GB)

Larger VRAM bandwidth (40.00GB/s vs 25.60GB/s)

48 additional rendering cores

Score

Benchmark

FP32 (float)

GeForce GT 420M

0.192 TFLOPS

GeForce GT 445M +70%

0.328 TFLOPS

GeForce GT 420M

VS

GeForce GT 445M

Graphics Card

Sep 2010

Release Date

Sep 2010

GeForce 400M

Generation

GeForce 400M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

625 MHz

Memory

512MB

Memory Size

1024MB

DDR3

Memory Type

GDDR5

128bit

Memory Bus

128bit

25.60GB/s

Bandwidth

40.00GB/s

Render Config

-

2

SM Count

3

96

Shading Units

144

16

TMUs

24

4

ROPs

16

-

64 KB (per SM)

L1 Cache

64 KB (per SM)

256 KB

L2 Cache

256 KB

-

Theoretical Performance

2.000 GPixel/s

Pixel Rate

3.420 GPixel/s

8.000 GTexel/s

Texture Rate

13.68 GTexel/s

-

192.0 GFLOPS

FP32 (float)

328.3 GFLOPS

16.00 GFLOPS

FP64 (double)

27.36 GFLOPS

Board Design

23W

TDP

35W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF108

GPU Name

GF106

N11P-GE-A1

GPU Variant

N11E-GE-A1

Fermi

Architecture

Fermi

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.585 billion

Transistors

1.17 billion

116 mm²

Die Size

238 mm²

Graphics Features

12 (11_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

2.1

5.1

Shader Model

5.1

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