NVIDIA GeForce GT 420M vs NVIDIA GeForce GT 620 OEM

Table of Contents

Graphics Processor

GPU model GF108 GF119
GPU variant N11P-GE-A1
Architecture Fermi Fermi 2.0
Foundry TSMC TSMC
Manufacturing process 40 nm 40 nm
Number of transistors 585 million 292 million
Die size 116 mm² 79 mm²

Mobile graphics

Release date Sep 3rd, 2010
Generation GeForce 400M
Production End-of-life
Interface PCIe 2.0 x16
Predecessor GeForce 300M
Successor GeForce 500M

Clocks

GPU clock 500 MHz 810 MHz
Shader clock 1000 MHz 1620 MHz
Memory clock 800 MHz 1600 Mbps effective 898 MHz 1796 Mbps effective

Memory Configuration

Memory size 512 MB 512 MB
Memory type DDR3 DDR3
Memory bus width 128 bit 64 bit
Bandwidth 25.60 GB/s 14.37 GB/s

Render Configuration

Shading units 96 48
TMUs 16 8
ROPs 4 4
SM count 2 1
Cache L1 64 KB (per SM) 64 KB (per SM)
Cache L2 256 KB 128 KB

Performance

Pixel rate 2.000 GPixel/s 1.620 GPixel/s
Texture rate 8.000 GTexel/s 6.480 GTexel/s
FP32 (float) performance 192.0 GFLOPS 155.5 GFLOPS
FP64 (double) performance 16.00 GFLOPS (1:12) 12.96 GFLOPS (1:12)

Dimensions & Outputs

TDP 23 W 30 W
Outputs No outputs 1x DVI1x HDMI1x VGA
Slot width Single-slot
Length 145 mm 5.7 inches
Suggested PSU 200 W
Power connectors None
Board number P1310

API Support & Features

DirectX 12 (11_0) 12 (11_0)
OpenGL 4.6 4.6
OpenCL 1.1 1.1
Vulkan
CUDA 2.1 2.1
Shader model 5.1 5.1

Other Features

Graphics Card

Release date Apr 2nd, 2012
Generation GeForce 600
Production End-of-life
Interface PCIe 2.0 x16
Predecessor GeForce 500
Successor GeForce 700

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