My dual dual opteron 265's OC'd...just starting

[Duvie]

System specs:

(2) Opteron 265's week 14's of 2006 (matched perfectly)
Asus K8N-DL Nforce 4 Krush chipset
1gb of Corsair LL ram cas 2,3,3,6
Antec True Power 2.0 550watt PSU
Nvidia 6800GT PCI-e
300gb Samsung HDD SATA


The first thing about this board is that the bios sucks.....Any settings past 220HTT is automatic no boot and have to clear cmos, pull battery and some times just flat remove the ram to get it to boot again....

So early on I found the best way to do this is set the HTT to 210 (anything really above 201 will set the pci/pci-e locks...Set your vdimm, chipset, HTT voltage, Htt multipler, ram divider, and vcore in the bios first...Boot then use Ntune, clockgen (I needed older version to recognize my PLL clock for some reason), and/or Crystal cpuid....


Once in at 1890mhz you use clockgen to boost it to desired speed....This board will take a straight jump right to 2.25ghz but any attempt to go higher in one step and the board will freeze...Go to 2.25ghz first and then move up i small increments and I can get to 2.4ghz easy.....use 1-2mhz increments to get to 2.5ghz where I am happy until I get my XP-90's up.....

If I can trust Everest (which seems to be the only one that works with this mobo) its says I am at 52-53c for one cpu and 56 on the other....

I have the vcore set to +50mv for 1.4v and then Asus overvolts .01-.02v..So I am at a reasonable 1.41-1.42v. I only have +0.05v option in the bios but then comes cyrstal cpuid which if need can boost the chip another .05v at least...I have tested it briefly to see and both everest and the bios on next bootup confirms it was raised...


I ran for 24 hours 2.3ghz with 4 instances of F@H with no EEUs.....I have ran a host of quick test on it at 2.5ghz and it hasn't hiccupped once...I ran 4instances of superpi at 32mb and not one hiccup...running F@H now for 24 hours before I move on...



Currently I am at 277HTT with ram below 400ddr with a 133divider....

I am using cas 2.5,3,3,8 timings (in isolation mode still) with 2.7 vdimm
I have HTT set at 3x, with HTT chipset at 1.25v (1.2v stock)
I have northbridge at 1.6v (stock at 1.5v)



Hit 1180 on cinebench...pics to start coming soon


**My goal is to get stable with no greater then 50c heat and 1.4v at 2.6ghz or 285 speed***


Then I am going to sell my AGP Iwill mobo and 6800GT w/ NV5 cooler that my 270's are in and get another one Asus K8N-DL with cheapo 1300 ATI card and try to OC those week 8,2006 chips to similar speeds...


Pics:

http://home.comcast.net/~duvie23/OPT265s-9x277-25ghz-PRE.JPG
http://home.comcast.net/~duvie23/OPT265s-9x277-25ghz-PRE2.JPG
http://home.comcast.net/~duvie23/OPT265s-9x277-25ghz-Cinebench.JPG

 

[Duvie]

Edit remember that right now I am only running single channel mode...I need to migrate my 2gb of corsair here...I think that will help some of my scores in things like superpi and cinebench...

 

[Duvie]

OK....2.5ghz has made it for 16 hours so far....I will leave it there until I get home this evening form work....

Then I will bump it up to 2.6ghz if I am able...still will be at 1.4v since I have not installed my XP-90's...

 

[DrMrLordX]

Interesting. This may give us some basic idea of what we can expect performance-wise from early 4x4 products. Of course, one could argue that your earlier Opteron 270 benchmark already gave us that data.

 

[Duvie]

I think I may need to use the 600watt PSU with this...PSU calculator says I need 494watts and a 550 watt antec is at best 80% efficient....so I think I may be on the cusp....I noticed a freeze after a brief period at 2533mhz...I think I need to change PSUs....

 

[hrsetrdr]

Originally posted by: Duvie
System specs:

(2) Opteron 265's week 14's of 2006 (matched perfectly)
Asus K8N-DL Nforce 4 Krush chipset
1gb of Corsair LL ram cas 2,3,3,6
Antec True Power 2.0 550watt PSU
Nvidia 6800GT PCI-e
300gb Samsung HDD SATA


The first thing about this board is that the bios sucks.....Any settings past 220HTT is automatic no boot and have to clear cmos, pull battery and some times just flat remove the ram to get it to boot again....

What BIOS version are you running? I just bought a K8N-DL and will be dropping a couple Opteron 265's in it; want to make sure they're recognized. The board I'm getting is running v. 1007.

Keep us posted on your oc progress.

 

[Furen]

Originally posted by: Duvie
I think I may need to use the 600watt PSU with this...PSU calculator says I need 494watts and a 550 watt antec is at best 80% efficient....so I think I may be on the cusp....I noticed a freeze after a brief period at 2533mhz...I think I need to change PSUs....

Efficiency doesn't play a part on that. If a PSU is rated at 600W then it can output 600W (supposedly) but would draw 750W at the plug (at 80% efficiency). What really matters is how much your PSU can output on its 12v rail(s), have you checked? Personally I like having a single rail with lots of capacity rather than two gimped rails. Have you tried increasing your ram voltage? maybe your ram is crapping out so ECC is kicking in...

 

[Visual]

the mobo really sounds like crap... too bad.
are there no better alternatives? you're buying a second of the same mobo now?

 

[Duvie]

Originally posted by: Visual
the mobo really sounds like crap... too bad.
are there no better alternatives? you're buying a second of the same mobo now?

Well not for dualS940's...All the other boards either have less voltage options, but most of them still need to use Ntune or Clockgen...

if you want to OC with dual opterons this is what you will get...The Key is just to get as much free power as you can....1.8ghz 265s running at 280-285's is a nice upgrade....38% upgrade..cannot argue with that