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-   -   PSU Issue (fixed) (http://www.nvnews.net/vbulletin/showthread.php?t=116784)

Mike89 07-24-08 11:27 PM

PSU Issue (fixed)
Got my EVGA 280 a couple of days ago. I had a weird problem. 2D was fine but as soon as I tried to play a game, I could play for a very short period and then the monitor would lose signal to the vid card. Vid card fan would completely stop spinning. I could reboot and everything was ok until I tried to play a game again. I had the Antec 550 watt Neo HE and I thought it was up to the task (it ran my 8800GTX fine). I started posting in forums and some thought it was a weak PSU and some thought I got a bad vid card. I was really tripping out.

Then I said hell with it and bought a Corsair TX750w PSU (with single 60 amp 12v rail) to rule in or out the power supply. I fired up Mass Effect with it and played for over 1 1/2 hours with no loss of signal to monitor at all. It was the longest I have been able to play a game since I got the vid card (longest up to then was around 5 minutes, and the card was not overheating).

Looks now like the Antec 550 just couldn't handle this card. My first experience with a PSU that couldn't cut the mustard.

SLippe 07-24-08 11:30 PM

Re: PSU Issue (fixed)
Glad you got it worked out without losing any components. I'm going to be switching out my Antec NeoHE 500W PSU for this one; http://www.newegg.com/Product/Produc...82E16817341011

Lfctony 07-24-08 11:31 PM

Re: PSU Issue (fixed)
Told you... :)

Mike89 07-24-08 11:37 PM

Re: PSU Issue (fixed)
Before the got the new PSU, I didn't know what to think. It was such a strange problem that I had never experienced before. Dunno, I just thought that if a power supply had problems providing power under load, it would just shut down completely and turn off the computer. I didn't expect monitor dropping signal to vid card where the system was still running, I could still hear the game sounds, but vid card would just shut off (with fan stopped). Didn't expect that. Another experience in the computer world, heh. I guess that says something about the Antec PSU in a positive way, that it would selectively cut voltage to one thing and still provide it to another instead of just crash altogether.

Lfctony 07-24-08 11:43 PM

Re: PSU Issue (fixed)
It's the same with overheating... The card powers off to prevent damage... It also powers off when not receiving enough power... It's a new thing I guess, instead of shutting the whole system down and cause corruption, it gives you a chance to power off the system using the on/off button (which shuts down everything in a hurry if you push it during Windows usage)...

Mike89 07-24-08 11:46 PM

Re: PSU Issue (fixed)
OK, that makes sense. The vid card shutting itself down rather than the PSU cutting power to it.

Lfctony 07-25-08 12:15 AM

Re: PSU Issue (fixed)
The weird thing about this is that most people fail to understand the concept. 99% of times, when something powers off during usage indicates that the PSU is at fault. But people keep insisting on "change drivers/Change Antialiasing/Change mouse" or whatever irrelevant suggestion they can think of. Over at these forums, another user has the same problem as you did, it's been 10 replies so far and not a single person has suggested it might be the PSU... I don't get it.

CaptNKILL 07-25-08 12:26 AM

Re: PSU Issue (fixed)
Sounds like the problem I had when I was building a Pentium 4 based mini ITX system. I was using power supply boards that have external AC adapters (like a laptop) and they were supposedly powerful enough to run the system, but as soon as the graphics drivers were installed or any load was put on the graphics chip the monitor would go into standby.

Using a more powerful standard power supply fixed the problem, so I ended up going with a slim 250W FlexATX PSU.

Before this thread, this is the only time I've ever heard of such a problem. Its good to know this isn't some kind of defect with the motherboard I'm using. :thumbsup:

Mike89 08-06-08 05:22 PM

Re: PSU Issue (fixed)
Latest update. I just RMA'd this card at Newegg and sent it back for replacement. I started this thread about that problem I was having. Well after thinking I solved the problem, things just continued to get worse. This card has been giving me headaches since I got it. To start I want to say I have a very stable system. With my previous 8800GTX, I can't even remember last time I had any kind of crash or instability the whole time I had it in this computer. Well that all changed from the time I put in the EVGA 280. The loss of signal to the monitor right off the bat. Replaced PSU and while I thought that problem was solved, things got worse as far a constant crashes (and yes I did try different drivers). I could play games all day long with the 8800GTX but with the 280, the same games were crashing all over the place. Today it was the usual game crashes and I'll be damned if one of the crashes resulted in loss of signal to monitor again. I finally said, "hell with this, I'm exchanging this card". Something never "felt" right since I put this card in. Even the performance didn't feel right, half the time it actually felt slower than the 8800GTX and never felt faster. I was just disappointed because I expected more. I've owned so many Nvidia cards I can't even count (back from the TNT days) and have had pretty good luck with them. My luck changed on this one.

After I took it out, I put in my second previous card which is my 7900GTX (I gave my 8800GTX to my daughter and no way could I take that away from her now). Installed the 7900GTX, fired up the same games and no problems whatsoever (other than having to turn down some things). Back to the stable system again. More confirmation that I just got a bad card.

Now I wait and reminisce with my old 7900GTX (albeit slower) until the new replacement card gets here. I hope the new card fixes my gaming headaches.

Mike89 08-15-08 12:07 AM

Re: PSU Issue (fixed)
I just got my replacement card from Newegg today. So far everything is fine, no dreaded game crashing. I think I got a good one this time.

Mike89 08-17-08 03:13 AM

Re: PSU Issue (fixed)
I don't know for sure but it looks that way now. Dunno what the likelihood is of me having both problems at the same time. That power supply is about two years old and it had always treated me well and ran the 8800GTX with no problems.

I just got done playing Mass Effect for about 4 hours with no issues. No way could I have done that with the first card.

I don't regret buying the Corsair PSU. Just knowing I have the extra power under me is worth it.

AdamK47 08-17-08 12:26 PM

Re: PSU Issue (fixed)
I have a 550W Antec Neo HE. It runs my eVGA Superclocked GTX 280 just fine. This power supply has a combined amperage of 42A (504W/12V) across all three 12V rails which is slightly above the recommended 40A for a single card. This is my current rig specs. The card is overclocked to 700/1400/2400 and everything runs perfectly fine. I've looped 3DMark demos for 14 hours straight at these speeds without a single problem.

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