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russellhaygood
Paper Tape
Posts: 3
Registered: ‎05-24-2018
Location: US
Views: 675
Message 1 of 6

Lenovo ThinkCentre M81 PSU Upgrade?

What is the cheapest 300W+ PSU that will fit in this machine? I want a gpu but that 240W PSU won't cut it. EDIT: Here is the gpu i am planning on buying. https://www.newegg.com/Product/Product.aspx?Item=N82E16814932005&ignorebbr=1

JDGillis
Bit Torrent
Posts: 2,414
Registered: ‎12-11-2015
Location: US
Views: 660
Message 2 of 6

Re: Lenovo ThinkCentre M81 PSU Upgrade?

Tower or Small form factor... actually posting your Machine Type Model (MTM) would help.

 

If you have the tower, just about any ATX PSU like this one would work since I believe your motherboard as the standard 24 pin connector, but with that card you might want to wait to see if it even needs a 300w PSU, because it may work just fine with you current PSU unless you have a bunch of HDDs installed etc..

 

If you want a Lenovo PSU that shipped with the M81, you can get a 280 watt like this one  https://www.amazon.com/Genuine-Lenovo-41A9684-Desktop-PS-5281-7VR/dp/B00R3NPNN6, which should be more than capable of powering your GPU.

 

Best of luck,

 

 

 

 

 

 

Community SeniorMod
Community SeniorMod
Posts: 2,880
Registered: ‎12-31-2011
Location: US
Views: 642
Message 3 of 6

Re: Lenovo ThinkCentre M81 PSU Upgrade?

Both M81 SFF and Tower have sufficient power with the stock power supply to run a low-power graphics card (30w and below.) 

 

The GT 710 you linked to above, does quailify as a low-power card, but is not on the supported card list for this system.  I suggest you look for a GT 730, version 2 or 3, or as a 2nd choice (as they are the same price as the better 730), a GT 720. 

 

Very confusingly, there are 3 versions of the Gt 730 card, version 1 uses an older chipset and is a 49w card, version 2 & 3 uses a newer chipset and uses 23 - 27w.  Version 3 uses DDR5 memory, which is considerably faster than the prior versions with DDR3, but is more expensive.   You can tell a version 1 card by the much lower core clock speed of 700 MHz vs. 902 of versions 2 & 3.  

 

 

russellhaygood
Paper Tape
Posts: 3
Registered: ‎05-24-2018
Location: US
Views: 624
Message 4 of 6

Re: Lenovo ThinkCentre M81 PSU Upgrade?

Community SeniorMod
Community SeniorMod
Posts: 2,880
Registered: ‎12-31-2011
Location: US
Views: 614
Message 5 of 6

Re: Lenovo ThinkCentre M81 PSU Upgrade?

Yes, that will work.  DDR5 equals GT 730 version 3, and would provide the best low-power performance short of a GT 1030 (see the pinned thread above.) 

russellhaygood
Paper Tape
Posts: 3
Registered: ‎05-24-2018
Location: US
Views: 557
Message 6 of 6

Re: Lenovo ThinkCentre M81 PSU Upgrade?

Okay, So the gt 710 is pretty much the same card. and uses less watts so will it work if i get it? i just need to confirm before i buy.

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