NVIDIA GeForce GT 420M vs NVIDIA GeForce 305M

VS

NVIDIA GeForce GT 420M

NVIDIA GeForce 305M

We compared two Mobile platform GPUs: 512MB VRAM GeForce GT 420M and 512MB VRAM GeForce 305M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GT 420M 's Advantages

Released 8 months late

Larger VRAM bandwidth (25.60GB/s vs 11.20GB/s)

80 additional rendering cores

NVIDIA GeForce 305M 's Advantages

Lower TDP (14W vs 23W)

Score

Benchmark

FP32 (float)

GeForce GT 420M +418%

0.192 TFLOPS

GeForce 305M

0.037 TFLOPS

GeForce GT 420M

VS

GeForce 305M

Graphics Card

Sep 2010

Release Date

Jan 2010

GeForce 400M

Generation

GeForce 300M

Mobile

Type

Mobile

PCIe 2.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

800 MHz

Memory Clock

700 MHz

Memory

512MB

Memory Size

512MB

DDR3

Memory Type

GDDR3

128bit

Memory Bus

64bit

25.60GB/s

Bandwidth

11.20GB/s

Render Config

-

2

SM Count

2

96

Shading Units

16

TMUs

8

4

ROPs

4

-

64 KB (per SM)

L1 Cache

-

256 KB

L2 Cache

32 KB

-

Theoretical Performance

2.000 GPixel/s

Pixel Rate

2.100 GPixel/s

8.000 GTexel/s

Texture Rate

4.200 GTexel/s

-

192.0 GFLOPS

FP32 (float)

36.80 GFLOPS

16.00 GFLOPS

FP64 (double)

-

Board Design

23W

TDP

14W

-

No outputs

Outputs

No outputs

-

Graphics Processor

GF108

GPU Name

GT218

N11P-GE-A1

GPU Variant

N11M-LP1

Fermi

Architecture

Tesla 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

40 nm

0.585 billion

Transistors

0.26 billion

116 mm²

Die Size

57 mm²

Graphics Features

12 (11_0)

DirectX

11.1 (10_1)

4.6

OpenGL

3.3

1.1

OpenCL

1.1

N/A

Vulkan

N/A

2.1

CUDA

1.2

5.1

Shader Model

4.1

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