wrong voltage supply to motherboard

Suvorov007

Reputable
Apr 14, 2014
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Hello!

I have a problem with power supply in my house and my motherboard does not gets sufficient voltages and where it should get 12v, 3,3v, 5v mine are all lower not even close to these figures. I have i74770k CPU, Gigabyte H87-HD3 motherboard, 8GB or RAM and GTX760 2 GB video card, but I have significant stutters and FPS drops in games. MY PSU is Corsair CX Series Modular CX750M - 750 Watt 80 PLUS Bronze Certified and I think it should be enough to run the system... I have issues with electricity in my house, where even new light bulbs burn very fast and energy/power goes off when too many electronic devices are turned on... I wondered what could help me to solve issue with my PC at least for now until I fix the electricity problem in the house... I heard that good UPS should help... any suggestions?

Many thanks in advance!
 
Solution
I am not very knowledgeable about the subject but according to that article a UPS can protect the computer from momentary or sustained reduction in input voltage. You can find online calculators just like this one that can help you determine whether your UPS will be able to provide enough power and voltage to your system or not:
http://www.apc.com/tools/ups_selector/


If I connect it to UPS can I use it until I have repair in the house???

 


Since I use my PC for work, I need at least some solution for the time until electricity will be fixed... it seems it cannot be fixed fast. If I connect my PSU to UPS will it help to deliver normal voltage to the system?

 
Are you sure this UPS can supply the required power to your system? According to this they can be used to protect computers:
http://en.wikipedia.org/wiki/Uninterruptible_power_supply
"A UPS is typically used to protect hardware such as computers, data centers, telecommunication equipment or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption or data loss."
There is also simpler solution at the moment, if you are not using your graphics card for work you can take it out and use Intel HD graphics; since it is the most power hungry component on your system.
 


Thanks for advice for graphics card, I will try that out. Regarding the UPS as far as I understand they also offer voltage stabilization and good UPS have circuitry that converts the line voltage (which is probably bad in my case) to DC, and then recreates the AC at its output.

 
I am not very knowledgeable about the subject but according to that article a UPS can protect the computer from momentary or sustained reduction in input voltage. You can find online calculators just like this one that can help you determine whether your UPS will be able to provide enough power and voltage to your system or not:
http://www.apc.com/tools/ups_selector/
 
Solution


Thank you!
 
Many thanks to all of you! I got important information from all answers... so my conclusion is to fix the electricity problem first of all, buying suitable UPS for the time until I fix the electricity and replace my PSU maybe something from corsair AX series instead CX.
 
Unless you are planning to SLI in the future I wouldn't recommend anything higher than 600 w for your system which is already an overkill. Also if you can get an EVGA or a XFX PSU it would be better, I have been reading some bad reviews about Corsair PSUs recently so I would avoid them if I were you.
 


Some cheap UPSes just provide battery back-up and surge protection. It sounds like you also need brown out protection. Be sure that the UPS that you get has "Line Interaction" or whatever term your particular manufacturer uses. Here are some examples: http://www.tripplite.com/products/series/sid/936

Yogi