Is My Power Supply Failing?

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perezbros

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Jun 28, 2013
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Do I need a new PSU? Everytime I play an intensive game I get strong FPS fluctuations like 50/40- down to like 30-25 range on my gtx 680. It just started recently getting much worse. Now I get black/purple/blue/green screens of death everytime I try to play a game for more then 30 mins. I tested my ram with memtest. Tested my cpu with prime 95. At first I blamed the graphics card because testing the gpu with the the stock clock in precision x caused some crashes with black screens and such. But I did notice when i was testing the card the temp was within an acceptable range even in my extremely hot house. I'm just not really that savvy when it comes down to the electric voltage stuff . Is my Hardware monitoring screenshot an indication of a psu failure?



Edit: Screenshot: http://snag.gy/7jveA.jpg

Edit 2: My power supply: OCZ ModXStream Pro 700W Modular High Performance Power Supply compatible with Intel Sandy Bridge Core i3 i5 i7 and AMD Phenom"


It does have a 3 year warranty. Which is good...

Edit 3: I use to get almost perfect 60fps in this game besides some towns.
<message edited by timmyp53 on 0 mins. ago>

7jveA.jpg
 
Solution
ko888


How old is your PSU?

According to professional reviews of the OCZ700MXSP it was never that good of a PSU.

That PSU is based on an old group regulated design. Its ripple suppression wasn't that good even when new.

Your voltage fluctuations indicate a high ripple level, maybe even out of spec ripple level.

High ripple levels causes erratic system behavior and will also gradually destroy the electrolytic capacitors on your motherboard, graphics card, disk drive controller circuit, etc.

No utility has the...
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ko888

ko888

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Feb 18, 2009
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CPUID's Hardware Monitor is a useless piece of cr@p, especially if it doesn't know how to correctly interpret the signals from your motherboard's sensor chip.

GIGABYTE's EasyTune6 should be able to correctly monitor and display your system voltages.
 
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perezbros

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Jun 28, 2013
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I'm actually getting the same readings with Easytune. The fluctuation on the 12V rail in the bios was actually quite jumpy. 12.048 to 12.112 within a couple seconds continuously. Also the other volts im not too sure about.

 
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ko888

ko888

Titan
Feb 18, 2009
16,708
41
84,990


How old is your PSU?

According to professional reviews of the OCZ700MXSP it was never that good of a PSU.

That PSU is based on an old group regulated design. Its ripple suppression wasn't that good even when new.

Your voltage fluctuations indicate a high ripple level, maybe even out of spec ripple level.

High ripple levels causes erratic system behavior and will also gradually destroy the electrolytic capacitors on your motherboard, graphics card, disk drive controller circuit, etc.

No utility has the ability to show you what the ripple level is on your PSU. You need to hook it up to a load tester and oscilloscope to determine that.
 
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Solution
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perezbros

Honorable
Jun 28, 2013
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10,510


Lol -- the electrolytic capacitors eh? I cracked up when i heard that. Anyway. Seeing as though my other components seem fine as far as I know. Replacing the PSU seems like the best thing to do right now. I do have a 3 year warranty on it? Should I just get a replacement? Or get an entirely new one because you think its just not a good psu? Any suggestions for a good psu?
 
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ko888

ko888

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Feb 18, 2009
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Google on "electrolytic capacitor" and you'll see that it's an actual passive electronic component. A PSU is built using many electrolytic capacitors. Use of cheap quality capacitors, like OCZ uses, means that the power supply will not have good reliability. Getting an exact replacement would just mean that you are still getting the same failure prone part that can't even deliver the 700 Watts specified on its label without burning out. You can get the replacement and sell it to recoup some of the cost for a new one.

For a system using a single GeForce GTX 680 graphics card NVIDIA specifies a minimum of a 550 Watt or greater system power supply that has a maximum combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors or one 6-pin and one 8-pin PCI Express supplementary power connectors depending on brand and model of the graphics card.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C - 50°C ambient temperature, is the most important factor.

I don't know what your budget is or where you live. My suggestion is the following because it is lower in price than an OCZ ModXStream Pro 700W Modular but has vastly superior quality:

XFX P1-750X-XXB9 750W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207023
 
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