Unexpected shutdown. PSU?

[Sensake]

Hi

I had this:
Asus P4P800 Deluxe
P4 2.8 Northwood
Antech something .. don't remember
ATI X800 Pro

And now I have this:
Thermaltake Purepower 420W
Asus P5GD2 Deluxe
ATI X850 XT PE
P4 3.4GHz LGA775

I have the same HDs, cd-rom drive and case.


What my PC do:
It work perfectly except when I try to play games like Republic commando or doom3.
After 5 to 10 minutes, it shutdown. When I mean shutdown it close completly and I have to switch OFF and ON the PSU in order to reboot. Sometime it may take 30 seconds before it want to reboot.

PSU problem?

Additional info:
I'm still trying multiple settings, now my vid card is alone on its power supply rail. My cd-rom drive is unpluged and I use my HDDs in the standar IDE port on my mobo. (I was thinking it was some sort of memory error with those raid port that I have on my board)
My CPU Temp show me 52 celcius idle and if I check right after an unexpected shutdown, the temp show me 54celcius. Oh and fresh windows install with about nothing installed and it kept to shutdown.


Anyways, I will continue on my "Is it my PSU?" trail and I will post some more info about voltages and etc. But if guys have any ideas or questions, go ahead!

Thx for help!

 

[mechBgon]

"Wimpy 12V rail on that PSU" is what springs to mind. What are they, 18 amps I think?

 

[Sensake]

Yep

+12V --> 18 A

 

[mechBgon]

If it were me, I'd grab an Enermax or Fortron 24-pin unit. Enermax has a 460W unit with 33A on the 12V rail, now THAT is a 12V rail for ya

 

[Sensake]

Ok, I will try!

But what if I find my 20pin antech and see how many amp it have. If it have more, is it a good idea to use it?

(Because my 24 pin PSU is in fact a 20 pin one with the 2.0 spec. So they give a 20 to 24 pin adaptor with the 4 to 8 pin adaptor. Now they write PCI-express Ready on the box, what a hack)

Here my voltages specs, we always don't know: (from the BIOS reading)

Vcore = 1.392 --> waving sometimes to 1.384
3.3V = 3.360 --> STABLE
5V = 5.145 --> waving sometimes to 5.171
12V = 11.985 --> STABLE

Quick question; is it normal for Vcore and 5V to not be stable like the 2 others?

 

[mechBgon]

For a 3.4GHz Pentium4 with a top-end video card, it might be best not to try the Antec unless its total power rating is suited to this load, like 350W minimum, 400W+ preferred. If you do try it, you could use the 24-pin adapter.

I don't think the small changes in voltage are a sign of trouble by themselves.

 

[Sensake]

Thx for all the infos!

I'm looking for a Enermax PSU over the net.. a 480W one (Dual pci-express ready)

In specs sheet I can see two +12V, one with 18 Amp max load and the other 15 Amp max load. When you mean 33 Amp, it's these 2 rails together?

It's not that I want this PSU, but when I will buy one, I wanna know what looking for... >8)

 

[mechBgon]

The "official" ATX 2.0 units will have two 12-volt rails like that 480W Enermax. The one I was thinking of actually has a single 12V rail but a very high amperage rating. Some people say single-rail is better. My #1 priority would be to get a strong high-quality unit that is natively 24-pin, and not worry too much about whether single or dual rails are better as long as it has plenty of 12-volt amperage.

 

[Sensake]

I'll probably change my PSU at the end of the week, I will let you know if it fix the problem.

I could have some other question later about RAID port IDE etc.

Anyways, cya!

 

[Sensake]

Ok, I found a free one >8)

An Antec Trupower 550 with the 24pin for my mobo. But this PSU don't have any 6-pin connector for my pci-express video card. I have a molex to 6-pin adapter but I'm not sure if it could work.

I think I need 2 * +12 Volts (yellow cable) and 3 * Ground (black cable) like this one :
6-pin specs

But my cable only have 1 * +12 Volts (yellow cable) and 2 * Ground (black cable)

Is it ok to run my PC like that? or I really need a good 6-pin adapter?

 

[Sensake]

Aditional info about my 6-pin adapter.

I had an adaptor with a double yellow cable with my last PSU (the thermaltake one) but I lost it since I return that PSU to get my money back.

The one I have now (single yellow cable) came with my ATI X850 XT PE video card. But I won this card at my job after our project was finished. (we gave away our test cards after we finish the game) but I can't ask the team anymore if this adapter is the correct one since the team has been dissolved.. >8(

Now the PC boot and seem to work OK even with this single yellow cable pluged in my vid card. But I don't feel safe to fire up Doom3... I want to be sure that my vid card will have all the power needed when a big application will run.

Thx for your help! >8)

 

[Sensake]

Look at what I found on ATI's web site:

ATI's web site (scroll down)

RADEON® X850 - Low Power Consumption
HardOCP.com
?However, the power cable is a testament to how power friendly this video card actually is. As you can see, this card does use the 6 pin PCI-Express power cable, but it only requires one Molex cable to be plugged in. This in comparison to a GeForce 6800Ultra PCI-Express video card, which requires two Molex cables to be plugged into the 6 pin PCI-Express power cable. The total wattage required by the card under a full load should fall short of 90 watts.?

If I'm right, 3 yellow cable give 288 watts, so 96 watts/yellow cable. They said it should not ask for more than 90 watts... I guess I'm ok with my single yellow cable .. >8)

I made my deductions with that web site ... and since I know nothing about all this... I will wait someone to confirm it hehehe

 

[FlyingPenguin]

I swear by Antec True Power PSUs. It's the only thing I buy for my clients and myself now. Modern mobs are VERY fussy about voltage stability, and cheap PSUs have lousy voltage regulation.

 

[mechBgon]

Originally posted by: Sensake
Aditional info about my 6-pin adapter.

I had an adaptor with a double yellow cable with my last PSU (the thermaltake one) but I lost it since I return that PSU to get my money back.

The one I have now (single yellow cable) came with my ATI X850 XT PE video card. But I won this card at my job after our project was finished. (we gave away our test cards after we finish the game) but I can't ask the team anymore if this adapter is the correct one since the team has been dissolved.. >8(

Now the PC boot and seem to work OK even with this single yellow cable pluged in my vid card. But I don't feel safe to fire up Doom3... I want to be sure that my vid card will have all the power needed when a big application will run.

Thx for your help! >8)

I think you are ok with your adapter, especially since ATI themselves provided it It's good to hear that your computer is working now, enjoy!

 

[imported_Hi]

nevermind you got one

 

[Sensake]

Hey, it's me again!

Thx for all your help, I've made a walkthrough of the first 5 maps of Doom 3 RoE without any problems... >8P