Support in other languages: 
Showing results for 
Search instead for 
Do you mean 
Welcome to the Lenovo Community

Welcome to the Forums!

Welcome to Lenovo's Peer-to-Peer Discussion Community!
Please note our guidelines. How to register and login and Community FAQs.
Shape the Future of PCs

Help Lenovo Shape the Future of PCs

Take the ownership survey. Share your ideas with our product team
Punch Card
Posts: 20
Registered: ‎07-30-2011
Location: USA

Upgrade Processor on 77521QU - H420 desktop

I have a 77521QU  -  H420 Desktop with a Intel G620 processor and wanted to find out what other  LGA 1155 processors will work. Can't find any data but this is what I'm considering installing.

Intel Core i3-2100 Sandy Bridge 3.1GHz 2 x 256KB L2 Cache 3MB L3 Cache LGA 1155 65W Dual-Core


I see other H420 with the i3 - 2100 CPU but not sure if it is the same motherboard.


Retired Guru
Posts: 2,090
Registered: ‎07-13-2009
Location: USA

Re: Upgrade Processor on 77521QU - H420 desktop

According to the PSREF for Essential Desktops

H420 (7752) at


It looks like the motherboard would be the same.

I am not 100% sure, but I see nothing that indicates

that there are different MBs.

What's DOS?
Posts: 1
Registered: ‎12-26-2011
Location: columbia
0 Kudos

Re: Upgrade Processor on 77521QU - H420 desktop

[ Edited ]

I was wondering the model of the mother board in this computer is, I am moving the parts of this computer into another computer's case and was wondering if i could find a manual to the exact motherboard so i could plug in the case wires, please reply