Opteron 165 and random shutdowns

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CruisD64

2[H]4U
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Mar 6, 2007
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Hey everyone. I recently purchased an Opteron 165 and have been trying to overclock it. The stepping on the chip is CCBWE 0546MPMW which is supposed to be a good stepping. I purchased it used on craigslist. The previous owner had it running at 2.7 on 1.45v. He was using a DFI Lanparty motherboard.

My setup is on an eVGA NF-41 SLI motherboard with 1gb Patriot 2.5cas DDR400.
The power supply is an antec neopower 480.
XFX 8800 gts
2 intake fans
2 exhaust fans
antec sx1040 case.

I've set the vcore to 1.45
Bus is 289 mult 9x -> 2601.35MHz
I've set the DRAM voltage to 2.75
HT is at 600 (x3)
NB voltage at 1.35
I've also widened my memory timings to 4-4-4-8

Running two instances of Prime2004 my max temps are 55 and 52 respectively which seems a bit high but within standards. I'm using a Zalman CNP9500 for cooling. My idle temps are at 38 and 32. After 12 hours of priming my computer randomly shut down. Also, i was playing COD2 and it randomly shut down during gameplay as well. I'm wondering why I cannot get it stable. My settings are less demanding than the previous owners yet he had full stability at 2.7. What could the culprit be? Perhaps the chipset cooler? Using speedfan I can't even tell which of the temps is the chipset but at full load none of the temps besides core exceed 40 which tells me things are all good. Any ideas? Any help would be appreciated. Thanks for those who read this!
 
My first guess is that your OC combined with the 8800GTX is killing your PSU. Your system shuts down after a period of time due to overheating of the PSU.
 
Mike, thanks for the response! The thought had crossed my mind! To check, my roommate has one of those spare 250 watt video card PSU's that fit into a 5.25 drive bay. I'm gonna give that a try to ease up the neopower and see if the problem persists. If it stops, then that would be great, but if not, back to the drawing board. Thanks!
 
Hmm, still no luck. I've clocked the cpu down to 1.8 and everything else back to stock as well with no luck. I also formatted and reinstalled windows to no avail. I'm wondering, could the chip be bad? Strange that it would work for a little while fine and then just randomly shut down. Ram is not the problem and I dont think the PSU is the problem. Everything worked fine with my x2 3800 so that leaves only the processor. I guess i got screwed :(
 
BTW, here are some of my settings and readings

VCORE - 1.45
NB - 1.48
+5 - 4.90
+12 - 12.39
5VSB - 5.00
VDIMM - 2.67
VBAT - 2.96


My ram timings are 4-4-4-8 CL 2.5, 2T rate. I'm using 3x512 PC3200 Patriot Signature Memory, and 1x512 kingston ValueRam. I know the ram may not be super good, but i have it running at speeds below 200 mhz so it should be fine. I also tried running it with just one stick. Could it be the problem anyway? Thanks in advance!
 
i'd try bumping your Vcore up a notch just to be sure. if it does it again in same or less time, then yeah its probably PSU time. wouldn't doubt it either, thats a heafty load;)

i mention that beacuse after using my OC'ed opteron 165 for about a month or so, it started giving me random restarts. some very minor voltage tweaking solved my problem (less than 0.05V increase)
 
yeah, i messed around with all of that. I've tried so many combinations of voltage and everything without any success. The thing that gets me is that it will shutdown even at stock speeds. However, one other thing is that i did was remove the IHS and installed a Zalman CNPS9500. There could be too much pressure on one side of the chip and not enough on the other but the temperatures dont indicate that. There is about an 8C difference between Core 0 and Core 1 and they're still within range (Core 0: 36C Core 1: 28C and stock speeds, 39C and 32C at 1.45 volts) Before giving up on my PSU, I will reinstall the IHS and see what happens. I'll put AS5 between the die and the IHS and also between the IHS and the heatsink. Also, would a PSU tester necessarily indicate a bad PSU? The tester says its fine but i'm not sure now.
 
CruisD64 said:
BTW, here are some of my settings and readings

VCORE - 1.45
NB - 1.48
+5 - 4.90
+12 - 12.39
5VSB - 5.00
VDIMM - 2.67
VBAT - 2.96


My ram timings are 4-4-4-8 CL 2.5, 2T rate. I'm using 3x512 PC3200 Patriot Signature Memory, and 1x512 kingston ValueRam. I know the ram may not be super good, but i have it running at speeds below 200 mhz so it should be fine. I also tried running it with just one stick. Could it be the problem anyway? Thanks in advance!
Click to expand...

Your Vdimm seems high to me have your tried backing off your ram voltage and timings?
 
You mean below stock specs? VDIMM is supposed to be at around 2.6. What would you recommend as far as timing? 4-5-5-9 with voltage of 2.5? I'll give it a shot when I get out of class.
 
CruisD64 said:
You mean below stock specs? VDIMM is supposed to be at around 2.6. What would you recommend as far as timing? 4-5-5-9 with voltage of 2.5? I'll give it a shot when I get out of class.
Click to expand...

those are extremely loose timings. why dont you run stock at 2.5-3-3-9 and 2.5-2.6v?
 
CruisD64 said:
You mean below stock specs? VDIMM is supposed to be at around 2.6. What would you recommend as far as timing? 4-5-5-9 with voltage of 2.5? I'll give it a shot when I get out of class.
Click to expand...

All of the low latency Patriot ram is only rated for 400Mhz. I am not sure how the Kingston and Patriot ram play together have you tried just 1GB of ram sticking with the Patriot? Are the ram timings and the voltage requirements the same for the Kingston and the Patriot?

if the sticks are rated for 2.6 leave them there just back off the timings. What clock speed is your memory running?
 
When overclocked my memory is running at 192 but when stock its at 200. The problem persists. My motherboard doesnt have a 2.6 option. It has 2.65 and increments by .1 each time. I'm at my house now so i'll play around with it for a little bit. I'll post updates as i go. I'm also going to try reinstalling the IHS and see what happens. Who knows, the pressure of the heatsink may be causing it to seat weird. We'll see
 
I'm giving up for now. It seems anything i do results in restarts or shutdown. I tried a 500watt VPower PSU and it wouldn't even boot. This weekend I'll take this comp home and swap the PSU from my weekend rig (450 Antec SmartPower) with a 7800GTX just to make sure that its not drawing too much power. If all goes well, then I will get a new PSU. My 12V rail reads 12.39 and +5V rail is at 4.90. Is that within specs? just wondering. Anyways, thanks for all the tips, but i'm just about out of energy for now.
 
Sum, what kind of temps are you getting with your 165? Just curious cause my setup is almost the same.
 
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