Big problem!

[lifelease]

My system is as follows:

CPU: AMD 9850 BE@2.6 ghz
Mobo: Ga-MA-790x DS4
RAM: 4 gigs OCZ 800 mhz ram. 4 4 4 14 timings
Video card: Dual 4850's
Windows XP pro 32 bit

3dmark06 score: 14000 (SO BAD. .)

Lately I've been having a lot of problems overclocking. For the life of me, I couldn't figure out what was wrong. I couldn't get my CPU past 2.6 ghz stable. I tried everything, lowering the vcore to 1.25, upping it to 1.4, and everything inbetween, trust me. What would happen is, I'd go into OCCT, everything would be fine, and then my computer would shut off. My temperatures were all normal. My CPU never went past 55 celcius. My motherboard's northbridge, while it runs hot, was running under what it normally does due to a fan i have on it.



So, last night I pushed my CPU to 2.8 ghz, 1.35v. I ran OCCT for 10 minutes, and everything was going smoothly. I figured I should use 3dmark06 so I can stress the video cards at the same time as OCCT, and to see what would happen.

As soon as the video cards engaged, boom. System shut down. I had to unplug the computer for 30 seconds before it would let me turn it on. This happens whenever I seem to use "too much power". All temperatures were normal. I'm not overheating.

I can also no longer overclock my video cards. I used to be able to set my one card to max overclock, but as soon as I hooked up some more case fans, I can no longer get my card stable past 650 core.

I think my power supply isn't powerful enough :/. Anyway I could know? I'll post a link of it for you guys.

http://www.tigerdirect.com/applicati...6&sku=GEN-6803


So it's either my motherboard or powersupply, and I'm at a loss. I know my motherboard isn't a good overclocker, but my video cards should be able to reach 700 core like they used to before I added the 3 120mm case fans.

[Webby]

Sounds like a PSU issue to me, the link takes me to a 404 page not found so post up a new link or just tell us the PSU manufacturer and model.

[Jay]

why 4GB and XP32 bit?

[lifelease]

Sounds like a PSU issue to me, the link takes me to a 404 page not found so post up a new link or just tell us the PSU manufacturer and model.

It's a powerup 800 Watt PSU. I'll try to find another link.

http://livewiredcomputers.com/store/...roducts_id=133

[lifelease]

why 4GB and XP32 bit?

Dunno. Seemed like a good idea. XP sees 3.3gigs or something anyway, right?

[Webby]

I have not heard of Powerup before and this makes me think that it could be a bad PSU at the route of your problems.

Your system shouldn't require 500W let alone 800W I would probably get a ~600W to keep the load in the optimum efficiency range.

I would suggest you get a new power supply, good manufacturers include Corsair, Enermax and Seasonic.

Aim for a PSU between 500W and 700W from these manufacturers and you will be fine (assuming it is a power supply issue in the first place) Something like the Corsair TX650W would be perfect.

[lifelease]

I have not heard of Powerup before and this makes me think that it could be a bad PSU at the route of your problems.

Your system shouldn't require 500W let alone 800W I would probably get a ~600W to keep the load in the optimum efficiency range.

I would suggest you get a new power supply, good manufacturers include Corsair, Enermax and Seasonic.

Aim for a PSU between 500W and 700W from these manufacturers and you will be fine (assuming it is a power supply issue in the first place) Something like the Corsair TX650W would be perfect.

Well I can't imagine what else it could be.

[DratUK]

I have not heard of Powerup before and this makes me think that it could be a bad PSU at the route of your problems.

Your system shouldn't require 500W let alone 800W I would probably get a ~600W to keep the load in the optimum efficiency range.

I would suggest you get a new power supply, good manufacturers include Corsair, Enermax and Seasonic.

Aim for a PSU between 500W and 700W from these manufacturers and you will be fine (assuming it is a power supply issue in the first place) Something like the Corsair TX650W would be perfect.

I would echo your thoughts Webby, I suspect the 12v rails are not going to be strong enough to hold the OC.