New Power Supply advice for unstable electrical grid

Leettime

Reputable
Jun 9, 2015
3
0
4,510
Hey guys,

I have a system with the following specs:
i7-4790k with all cores at 4.5GHz
Msi Gtx 970 with occasional OC
MSI Gaming 5 MoBo
2 SSDs, 3 HDDs, 7 Fans(including these as I am uncertain if they have a significant impact on the systems power usage or not)
Cooler Master G750M, 750W PSU Bronze.

My problem is the following: Whenever someone turns on the Hi-Fi system in the room where my PC is, suddenly the monitor goes black for a good 2+ seconds. I tried it with a different monitor, still the same thing happens. If the GPU is OCd then it seems to happen more often, and it can be triggered easier as well. For example, by turning on other appliances in the apartment or switching the lights in the living room on and off repeatedly. When the above mentioned black screen happens, neither the card or its driver crashes and there isn't a noticeable drop on the graphs from MSI Afterburner. However, it doesn't feel good to experience this and I am unsure if it does any good for the hardware itself.
By observing the above described behavior, I came to the conclusion that it might be due to the not so stable electrical grid in the house and that my current PSU might not be the best choice.

My question is: Is there anything I can do to make it more stable from my side, especially regarding the PSU? If yes, what kind of PSU would you recommend for this system, taking into consideration that I might be upgrading the GPU to a 1080 in 2017.
 
Solution
While the bronze 'G' series from Cooler Master isnt the best, the larger issue here is allowing the PSU to be taking the impact of unstable power.

Not exactly my area of expertise, but I'd recommend looking into a UPS, in addition to a new PSU.
A quality UPS will filter the power, and provide battery backup for short-drops too.

Given a 4790K and either a 970 or 1080, you're looking at probably 350W max theoretical draw, before OCing.
A 550W should suffice, with ample headroom or a 650W to give yourself even more headroom.

PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($64.99 @ Newegg)
Total: $64.99
Prices...

Barty1884

Retired Moderator
While the bronze 'G' series from Cooler Master isnt the best, the larger issue here is allowing the PSU to be taking the impact of unstable power.

Not exactly my area of expertise, but I'd recommend looking into a UPS, in addition to a new PSU.
A quality UPS will filter the power, and provide battery backup for short-drops too.

Given a 4790K and either a 970 or 1080, you're looking at probably 350W max theoretical draw, before OCing.
A 550W should suffice, with ample headroom or a 650W to give yourself even more headroom.

PCPartPicker part list / Price breakdown by merchant

Power Supply: SeaSonic G 550W 80+ Gold Certified Semi-Modular ATX Power Supply ($64.99 @ Newegg)
Total: $64.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-01-05 11:38 EST-0500

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA SuperNOVA GS 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($84.99 @ B&H)
Total: $84.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-01-05 11:38 EST-0500
 
Solution