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problem overclocking opty 165, PSU related?

post #1 of 9
Thread Starter 
I'm posting this here because it was moving a bit too slowly in the PSU only forum. I'm going to order a new one today if ya'll think that its the source of my problems. I've having a hard time overclocking my opty 165, I can get it to run stably at 2.15 ghz, but if I try to push any higher I have real problems, it will refuse to even boot into windows. My temps are great, at 2150 ghz I Idle at 30C and peak at 43C. I can run run three instances of stress prime for upwards of 8 hours just fine, two instances devoted to either core running in the cpu stressing mode and one with no affinity set running blend mode. For some reason thats the only way I can keep the cpu being utilized 100%. Anyway, where I'm headed is that I'm thinking the power supply might be part of my problem. I have an Aspire X-Dreamer case and am using the power supply that came with it, which is a 420W power supply. I'm using an ASUS A8N5X motherboard and hence have PC Probe, when I run it I see that the 3.3volt gail is consistently 3.31, the 5 volt rail is typically around 4.84, and the 12v rail moves between 11.8 and 11.98. These figures are with no overclocking applied though, running at completely stock settings just as a baseline. When I overclock, the voltages seem a bit less stable with the 12V rail being inclined to dip even down into the 11.7's. I dont know if this is the problem or not, but I figured some advice would do me well! If ya'll think that it could be PSU related, I am considering swapping to this: http://www.newegg.com/Product/Produc...82E16817101518 Cost is of course a concern, I dont need anything ridiculously expensive. I use my computer for heavy photo editing and batch processing, I occasionally play games but not really competitively or anything. Thanks!
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
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My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
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post #2 of 9
I Think it very wel could be a PSU problem. 420 is rather low. I would recommend something higher than a 500W psu.

You also may just be reaching a dead spot in your FSB. So try running the processor say 300mhz higher and see if that is the case.
I had that problem when i was first overclocking my DTR.

Since cost is a factor, what budget are you looking at for this new PSU?
TheGibson
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TheGibson
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post #3 of 9
Thread Starter 
50-75 would be about right, I'm not looking to OC to anything really crazy, or have too much hardware in the computer, but at the same time I have a tendency to let things get a little out of hand. Give me a week and I'll probably be trying to watercool the damn thing or something!
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
  hide details  
Reply
post #4 of 9
It could definitely be the PSU in this case. The OEM PSUs that come with those cases are junk. I've gone through all of the PSUs that come with cases for all of the machines I've ever built. In addition to getting a PSU with a higher wattage, look for a PSU that either has a dual 12V rail or a single 12V rail with at least 24A. OCing draws quite a bit of power so it's important to get a quality PSU that will keep the juice flowing. Take a look at the Aspire PSUs. The ones in your price range are great PSUs.
    
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post #5 of 9
Thread Starter 
Its funny to me that this is an aspire case but doesn't seem to have an aspire psu, it says "turbolink" on the side, which sounds sketchy as hell to me!

Edit: I fixed the link in my first post! Also checking into the aspire psus.
My System
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CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
  hide details  
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post #6 of 9
2150?? what fsb and muti are you using??
did you set the memory right?? and your v core??
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post #7 of 9
Thread Starter 
It wasn't 2150, but it was right around there, let me see if I can re-create it right now and see what happens, I'll be back with the exact specs momentarily

Ok, got it back to where it had been, and its at least running windows fine. I'm running the following settings:

FSB: 240
multiplier: 9x
HTT frequency: 4x
Memclock: 333mhz
DDR voltage: 2.6
vcore: 1.35
PCI clock: 33.33mhz
PCI express clock: locked at 100mhz
memory timings are stock at 3-4-4-8

This gives me a cpu speed of 2160.2mhz and a memory frequency of 196.4
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
  hide details  
Reply
post #8 of 9
Quote:
Its funny to me that this is an aspire case but doesn't seem to have an aspire psu, it says "turbolink" on the side, which sounds sketchy as hell to me!
Yea.... their cases come with some other cheapo brand PSUs, but the real Aspire PSUs are nice. Toss the turbolinks in the garbage. I don't even bother using them anymore.... Just make test PSUs out of them
    
CPUMotherboardGraphicsRAM
X2 5000+ BE Gigabyte GA-MA78GM-S2H AM2+ Integrated HD3200 2x2GB OCZ DDR2 
Hard DriveMonitorPowerCase
Maxtor 40GB Samsung 2220WM 22" Antec Neo HE 550W Ultra Wizard 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
X2 5000+ BE Gigabyte GA-MA78GM-S2H AM2+ Integrated HD3200 2x2GB OCZ DDR2 
Hard DriveMonitorPowerCase
Maxtor 40GB Samsung 2220WM 22" Antec Neo HE 550W Ultra Wizard 
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post #9 of 9
Thread Starter 
Whoa, yeah now that I'm back to my old settings as previously listed, and running stress prime, my cpu shows 100% useage the 12volt rail has dropped to between 11.71 and 11.78 volts. I had tried raising the vcore before and it wouldn't even boot. I suspect that when I had previously tried to raise the vcore it was just too taxing for the PSU.
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Opteron 165 ASUS A8N5X XP Pro Dell 2405FPW 
PowerCase
420W with case Aspire X-Dreamer 
  hide details  
Reply
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