who to blame, GPU or PSU?

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David32
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I just realized that my random computer shutdowns are only happening while Im gaming. but as far as for leaving the computer on to just browse the web or listen to music, my pc runs like normal. it isnt till I start playing video games, that it will shut down on me for no reason. Watcha guys think, could it be the graphics card or the power supply.. 

undeadkingpr
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Hmmm seems more likely to be the power supply if you ask me... If you could I would find a PSU that you know works and hook it up to make sure it is indeed the crux of the matter.

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David32
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haha so I swap my HD4870 and placed in my brother 9500GT and played WoW for a good hour and no shut downs.. if i had my HD4870 it would of shut down in the first 5-10mins. Man I didnt even last me that long i got it in late 2008.. Visiontek must suck. 

undeadkingpr
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Either that or becasue a 9500 requires far less power than a 4870 the PSU is able to cope much better.

David32
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I used to think my 8800 GTX sucked out more power than the HD 4870, but you do have a point. Then again, why didnt this happen when I first bought it and the 2 years I had it for.. card says it requires a 500Watt PSU, mines a 700Watt. 

I notified Visiontek about it, their going through the process of validating the RMA for the Life Time Warranty they have on this card. 

undeadkingpr
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Power supplies die gradually. Typically it is not one big bam. Especially if the PSU is a brandx then it could likely die quickly.

New videocard can't hurt and hopefully it will fix it but if not then replace the PSU.

David32
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Yea thats what Im gonna do, I mean if a new graphcis card gives me the same outcome then for sure it is the PSU. Nah its not a generic brand, its  OCZ 700watt  PSU, it has been good to me with 3 different GPU's (NV7800GT, 8800GTX, ATI HD4870), expect that this is the first time i experience this with the HD4870

KoutaFG
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Did you try re-seating the video card, take it out and put it back in, it could be as simple as the card had gotten loose or just was not put in good enough in the first place?

That or changing the power cord plugged into the video card for one that's not bing used and if not even try using power adapter on the older power cords that name slips my mind at the moment, if you have any of the adapters.

I know its really basic info but hey, just thought I'd throw it out there.

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omally
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*thumbs up*

Kindom934
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Sounds like a power supply issue. Power requirement increases and causes the psu to start buckling. I'd expect it to run the 4870 though. Again, it could just be from age as psus start to slowly lose their efficiency as it ages. As mention above, some time adjusting the power load (by managing your connected devices) better (i.e. like putting 2x molex with even loads of 4 devices (2 devices per molex each instead of 1 and 3) will sometimes solve the issue. Glad that Visiontek is RMA'ing the card though anyhow.

I'd just run PRIME95 also just to see if the rest of the system stability is OK. Check fo any dust build up also?

David32
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Well while Visiontek is taking their sweet time to RMA the graphics card.. just today this is the new situation I got. Okay a while back my computer would just shut down while gaming, now my computer wont turn on at all.. some not all fans turn on.. the PSU blue fan doesnt even turn, but the ones that do turn on for 1 second but then turn off right away. I removed the graphics card, hoping it would just turn on with the motherboard beeping error noises, but nothing. Wont turn on. Now for sure I know its a PSU problem. I wonder if I could make Visiontek can delay the RMA, while I buy a new PSU.. I had a good one in mind and Ultra LSP750, it was 60 bucks on tigerdirect but now its 80 and damn thats alot.. anyone got any good recommendations.. I really dont got much cash.. willing to spend around 50-60, 65dollars max that has to be atleast 700Watts, to power up all my fans, h20C, and drives. 

Tiv
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Maybe they have a corsair in the 650 range or something?

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massau
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bsod or just fall out and than you need to wait till it cools dawn if so than it might be the cpu or gpu just check your temps

undeadkingpr
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First check if the OCZ is still under warranty. Typically their warranty is double 3 year or lifetime. If not I would advise this:

 

http://www.newegg.com/Product/Product.aspx?Item=N82E16817341018&cm_re=700w_power_supply-_-17-341-018-_-Product  

I use this product personally and can say it works great!

Kindom934
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Could be your power supply. Try and make sure nothing is causing a short in the sys. Easiest thing is to test with another psu. If not, then your shooting in the dark. Considering your above issue, I would pinpoint it to the psu.

I've had two OCZ psus and so far they are all both very solid PSU. Tiv mention the Corsair psus. I never bought those psus yet, but I've read reviews and seen the specs on them. They have one huge big 12v+ rail VS the multiple medium/small rails like other power supplies. I've always been a fan of more bigger rails VS multiple smaller rails as in the earlier days back in 2006 when SLi first came out, multiple rails can sometimes give issues when a suddent demand was given and the power supply couldn't even out the surge of required power needed. Now days psus should be fine as I've ran SLi 9600GT OC's with a average psus without issue.

David32
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Sorry for a late update, don't really have a pc to get on to 

Okay so Visiontek is still yet to contact about me about the RMA for the GPU which in a way it's okay because I really do believe the problem was the PSU.  All I was told, is to provide information about purchase of the the card, my mail information, and to inform me that I must pay them to ship back. But they haven't given me the OK to RMA it. They haven't provided the info of where to ship it to them or an RMA number.

 

Now, as for my power supply.. I couldn't find any paper work of when I purchase it till I logged into my old email. Had purchase it back in 1/23/07 and when I told OCZ about it, they told me my PSU only had a 3 year warranty. They didn't asked me any questios because the 3 years had passed, and they did let me RMA and I have shipped it off to them. Now just waitin to see when they get it and replace it.

Tiv
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There is no way I'd wait that long for RMA information. Ask them to hurry up, send emails and call them alot. If it was longer than a few weeks I'd buy new hardware and sell the RMA one when it got back. I can't even count the number of times I've got corporations to RMA stuff outside of the dates. Just play dumb and plead for their help..lol