Author Topic: Power supply bottlenecking?  (Read 2824 times)

zynx33

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Power supply bottlenecking?
« on: September 30, 2012, 04:05:34 am »
I've read around, and my stock 300 watt powersupply could be bottlenecking my computer, luckily truevibe has a 750 laying around he said he will give me, but do you guys think my powersupply could be bottlenecking my computer?

omniconsumer

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Re: Power supply bottlenecking?
« Reply #1 on: September 30, 2012, 06:10:08 am »
A power supply can not bottleneck. It only provides power. You can only under power your computer. 

zynx33

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Re: Power supply bottlenecking?
« Reply #2 on: September 30, 2012, 06:16:11 am »
Exactly, people have been saying my things could not be running at their full potential because there is not enough power to run everything to 100%

omniconsumer

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Re: Power supply bottlenecking?
« Reply #3 on: September 30, 2012, 06:39:00 am »
Download SiSoft Sandra and do some testing and diagnostics on your machine.  I have been using their programs for a long time.  It is thorough and easy to understand.

ZenPhire

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Re: Power supply bottlenecking?
« Reply #4 on: September 30, 2012, 02:12:47 pm »
No, power can make things fail. Overvolting can cause overheating, undervolting can cause current draw that will kill things. But on the whole, with power it either works or it doesn't. You would see a lot of errors and symptoms if there were bad power. But it's not like the system would just be slower. Try measuring the current with a voltmeter and you'll see if you are exceeding your PSU. You can also measure the load voltages on the lines, or look for line noise. Those types of things require tools though and are best left to professionals.

Short answer: No, PSU can not possibly bottleneck your performance. But it can cause errors that will effect performance (though these should be obvious, and you'd likely see BSOD).

If you post your hardware we can offer more advice. =)
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zynx33

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Re: Power supply bottlenecking?
« Reply #5 on: September 30, 2012, 06:27:03 pm »
AMD fx-6120 6 core 3.8ghz, 10GB RAM, radeon 7450.

ZenPhire

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Re: Power supply bottlenecking?
« Reply #6 on: September 30, 2012, 08:56:31 pm »
AMD fx-6120 6 core 3.8ghz, 10GB RAM, radeon 7450.
graphics card is the bottleneck there. (If you mean game performance)
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zynx33

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Re: Power supply bottlenecking?
« Reply #7 on: September 30, 2012, 09:34:49 pm »
What if I put a 7750 in there?

ZenPhire

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Re: Power supply bottlenecking?
« Reply #8 on: October 01, 2012, 12:21:13 am »
What if I put a 7750 in there?
The more the better. 7750 would certainly be an upgrade, but that's the bare minimum I'd recommend for modern 3D gaming. You can get a 480 for damn cheap these days, hell of a deal. or a 7850 for same price (for a more modern card). Those are about $170. But if you are low on cash then the 7750 is a very good deal as far as performance/dollar.
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zynx33

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Re: Power supply bottlenecking?
« Reply #9 on: October 01, 2012, 12:27:24 am »
I can get a 7550 without upgrading my psu. But truvibe said he has a 750w i could have for free soo hmm.

zynx33

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Re: Power supply bottlenecking?
« Reply #10 on: October 01, 2012, 12:37:03 am »
Now I want a 7850....

ZenPhire

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Re: Power supply bottlenecking?
« Reply #11 on: October 01, 2012, 06:46:57 pm »
7550 is pretty slim for modern gaming. =(
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