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Problem with x750 and SLI 570...

post #1 of 22
Thread Starter 
Well the other day I started getting lock ups while running a modded version of GRID. I thought it was due to me using too much vram, as I had modified all of the shadow and reflection sizes, as well as the other textures in the game. I didn't do any gaming the last couple days, and today fired up dirt 3.

With dirt 3, as soon as I hit the middle of the benchmark I get a quick lag, then reboot of my computer.

I then tried furmark, same thing after ~3 minutes.

I got a new ssd yesterday and used it as a chance to do a clean install, so this is running on a very new clean install with nothing installed but afterburner, steam, and chrome installed.

This is running the same settings as I have been for ~9 months without issue. I ran these settings with a 955 at 1.58 for the first few months before my 1155 upgrade and also had no issues.

Just wondering if this is an issue with the PSU getting taxed too much and shutting itself down when too much power is drawn? Temps are fine by the way, cpu hitting 60's, gpu maxing in the low 70's.

2x 570 at 1.1v
2500k at 1.41v
7 fans
1ssd
1hd
1.6v ram

I am going to run benchmarks with the same voltage but lowered clocks in a minute to eliminate the gpu o/c as the issue.
Edited by CRosko42 - 7/27/11 at 10:49am
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post #2 of 22

I would see how things are without the OC because you may be right. I suspect without it you should be OK but with Your CPU and both your cards OC'd you may be nearing 750w. Put your PC specs into this PSU calculator and see what you come up with. I bet you find you are very close to 750w with your cpu and cards OC'd.

It is just a rough guide so I suppose the only true way is to measure how many amps you are pulling from the wall. You can pick up energy monitors like this one

to measure the amps. This one is $30 but there are cheaper ones. Again though I am unsure of how accurate these are but they can't be far off and should give you a good idea. Bear in mind though that if your PSU is 80% efficient then it will only be providing 80% of what you are pulling from the wall.

I don't know how long you have had your PSU but I would also note that they do get weaker over time. It may have had enough juice 9 months ago. Maybe not so much now.
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post #3 of 22
If the cpu is overclocked to 4ghz your pullin 300w just for the cpu plus those cards overclock and voltage are pulling more than 250w each, turn the clocks and voltage down, not having enough power will cause the constant freezes and reeboots.

You shouldnt run those cards at such high clocks, they wont last long.
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post #4 of 22
Thread Starter 
OK so, it's not the cards, I've been running a few different benches at 1.1v stock clocks and same thing happens.

So it looks like I need a new psu.

I bought this thing because people said it would be fine, now I need to drop $175+ again. Not a huge deal, but my wallet hurts lately. I ordered a few ap-15s from germany last week and one arrived broken so I needed to order another with another $75+ order to avoid crazy shipping charges. Anyway...

AX850? Any other recommendations?
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post #5 of 22
Quote:
Originally Posted by CRosko42 View Post
OK so, it's not the cards, I've been running a few different benches at 1.1v stock clocks and same thing happens.

So it looks like I need a new psu.

I bought this thing because people said it would be fine, now I need to drop $175+ again. Not a huge deal, but my wallet hurts lately. I ordered a few ap-15s from germany last week and one arrived broken so I needed to order another with another $75+ order to avoid crazy shipping charges. Anyway...

AX850? Any other recommendations?
Just bought a corsair 800GS for 126$ shipped and it is solid as a rock good reviews to plus nice long cables, not modular though but oh well.
    
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post #6 of 22
Thread Starter 
Quote:
Originally Posted by adzsask View Post
Just bought a corsair 800GS for 126$ shipped and it is solid as a rock good reviews to plus nice long cables, not modular though but oh well.
Looking for 80+ gold, modular, 850W or more.
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post #7 of 22
With the kind of loads you're putting on it, especially after knocking down to stock frequencies, you're getting nowhere near 750W on a unit that's easily supposed to handle 750W.

You should contact Seasonic about an RMA.


Whoever thinks an i5-2500k overclocked reaches 300W is hugely mistaken. Even if you're talking about system power consumption from the wall, so including power losses in the power supply, a mostly idle GPU, RAM, fans, motherboard, etc., the whole thing with an i5-2500k overclocked hard isn't going anywhere near 300W anyway.

http://www.xbitlabs.com/articles/cpu..._12.html#sect0

(from the CPU itself at 4.7 GHz and suitably high voltage, power draw was about 110W)
Edited by mikeaj - 7/27/11 at 2:50pm
post #8 of 22
Quote:
Originally Posted by Haze_hellivo View Post
If the cpu is overclocked to 4ghz your pullin 300w just for the cpu plus those cards overclock and voltage are pulling more than 250w each, turn the clocks and voltage down, not having enough power will cause the constant freezes and reeboots.

You shouldnt run those cards at such high clocks, they wont last long.
Are you saying that the processor is pulling three times the amount of wattage because of a 700mhz overclock?

Where is Phaedrus when you need him.
Edited by UsedPaperclip - 7/27/11 at 2:50pm
post #9 of 22
I seriously doubt your psu is the problem... it should be able to pull around ~900w from the wall without it loosing 80 plus bronze certification.

Have you tried testing the overclock on the cpu individually? on the gpus individually?
No way that the psu should be unable to handle your setup
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post #10 of 22
Suprised no one asked, what nvidia drivers are you running?

Sometimes nvidia driver crashes and is unable to reload again therefore you might get freezing and it may even cause a shutdown which is a little unlikely though.
Edited by munaim1 - 7/27/11 at 3:01pm
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