PSU not enough??

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sabre181

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Jan 12, 2010
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Hello all,

Before I present my issue, here is my rig:

PII X4 BE 3.6 OC'ed to 4.0, 1.400v
GTX 560ti 448 Core
4x2GB DDR3 1333 1.6v
WD Black 1TB HDD
Vertex 2 SSD
Sound Blaster PCI card
Aftermarket Heatsink/Fan for processor
5 LED case fans

Old PSU: Antec 650w http://www.newegg.com/Product/Product.aspx?Item=N82E16817371015
Test PSU: Thermaltake 850w http://www.newegg.com/Product/Product.aspx?Item=N82E16817153158


I've recently gotten back into playing BF3, I think I remember why I stopped a while ago. On somewhat frequent occurrences, my computer would simply crash and force me to restart when I was playing BF3. It would happen only after I'd been playing for at least 20 mins, but it would only be when I was playing BF3. I wouldn't have too much else open, Skype for chatting and maybe Chrome, but that's about it.

So, I went out and purchased a Thermaltake 850w to swap out from my old Antec 650w, and for the two days of pretty solid BF3 playing, I haven't had it crash yet.

My question to my fellow hardware-ers, would it be possible that my old Antec 650w simply can't keep up steady power to my rig?

Thanks in advance!
 
Solution
ko888
For a system using a single GeForce GTX 560 Ti 448 Cores Limited Edition graphics card NVIDIA specifies a minimum of a 550 Watt or greater power supply that has a combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

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 at 45°C - 50°C ambient temperature, is the most critical factor.

You may find power supplies on the market that supply more than enough Wattage to run the system. However, some of them lack the Amperage capacity on the critical +12 Volt rail, which...
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its possible but doubt it even with a voltage increase, shouldnt bring up your power usage that crazy, but u never know, but with those specs shouldnt be a problem with 650, its also possible your graphic card could have overheating problems and make your pc crash, when you dont play does ur pc crash or not, thanks
 
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It only crashes when I play BF3. I was under a similar idea with my power consumption. Everything that I've read indicates that I shouldn't be near the 650w yet. I'm going to stress test with Kombustor and see if I can't replicate the crash outside of BF3, keep everything posted.
 
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So, I ran Kombustor for about 45 mins straight under the heaviest of loads, and it didn't crash. Granted, I play BF3 for much longer than that at times so I'm thinking that it wasn't enough time. I'll try again today when I have more time.
 
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I'm fairly certain that its my old PSU. I've been using the new PSU very extensively over the past couple of days without any incident. So, now I'm deciding between these different PSUs:

Corsair TX650w http://www.newegg.com/Product/Product.aspx?Item=N82E16817139031
Corsair TX750w http://www.newegg.com/Product/Product.aspx?Item=N82E16817139030
OCZ ZT Series 750W http://www.newegg.com/Product/Product.aspx?Item=N82E16817341052

I'm looking for a modular PSU that has good future-readiness. Any other recommendations would be appreciated!
 
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I was kind of hoping to stay around the $100 price point 🙁 And would 850w be too much? I don't plan on SLI'ing or anything in the relative future, so I think that might a little overkill? Thanks for the suggestions though!
 
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For a system using a single GeForce GTX 560 Ti 448 Cores Limited Edition graphics card NVIDIA specifies a minimum of a 550 Watt or greater power supply that has a combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.

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 at 45°C - 50°C ambient temperature, is the most critical factor.

You may find power supplies on the market that supply more than enough Wattage to run the system. However, some of them lack the Amperage capacity on the critical +12 Volt rail, which is necessary to properly power the critical components in the system (i.e. CPU and GPUs). This is the reason why graphics card manufacturers overstate the power supply wattage, usually by at least 50 Watts, to take into account those power supplies that have the weaker +12 Volt rail(s).

The Seasonic M12II-620 Bronze (SS-620GM), with its combined +12 Volt continuous current rating of 48 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single GeForce GTX 560 Ti 448 Cores Limited Edition.

SeaSonic M12II 620 Bronze 620W ATX12V V2.3 / EPS 12V V2.91 SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply for $89.99 USD
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151095
 
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Solution

The Seasonic M12II-520 Bronze (SS-520GM), with its combined +12 Volt continuous current rating of 40 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is sufficient to power your system configuration with a single GeForce GTX 560 Ti 448 Cores Limited Edition.

The reason why I recommended the 620 Watt version is because of the extra capacity on the +12 Volt rail you may need due to your CPU overclocking and maybe even GPU overclocking. It's better to have the extra capacity than to have insufficient capacity when overclocking.
 
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