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HammerSandwich 06-27-2007 03:48 PM

OC advice
 
This post is an offshoot from here.

You can find a fuller description of my system at SPCR. The essential components:
  • Opteron 144
  • Asrock 939Dual-SATA2
  • 2x512MB PQI Turbo (TCCD on Brainpower)
  • Seasonic Super Silencer 350 Rev A3
  • Original Storm/G4
  • 10W DDC
  • Fedco 2-333 heater core
  • Yate Loon D12SL
  • Sunbeam Rheobus for both fan & pump

Something hit a wall at an unexpectedly low level. All claims of "stable" are based on hours of Memtest and/or Prime95. I've run other tests, but not at such length.

The current settings run the Opty with its 9x multiplier at 270FSB for 2.43GHz. This is with the voltage maxed out in BIOS at "1.45V" and CnQ enabled. Speedfan reports only 1.41V. If I disable CnQ, Speedfan shows 1.45V and can run 9x280 for 2.52GHz. RAM voltage is "high", with 3-4-4-8 2T timings.

To test for max mobo FSB, I reduced the CPU multiplier to 5x and the RAM with several dividers. These tests indicated stability at 270-280FSB but not 285-290.

Tests were run with various BIOS versions, including the OCWB betas and official Asrock versions. I can't report significant gains with any of them. Currently running 2.20.

I've experimented with greater cooling. OCs were found with pump & fan at top speed. In addition, I opened my case's bezel for a 4C improvement(!). I also added another 120 aimed at the CPU socket area and DIMMs. Neither of these steps added stability at 285FSB.

Okay, what else can I tell you?

jaydee 06-27-2007 08:10 PM

Re: OC advice
 
Well I am no OC specialist but sounds to me like you need more voltage in either the RAM or the CPU and maybe both. If that board tops out at 1.45V then maybe a volt mod? Is there a RAM voltage adjustment?

If running it cooler dosn't help then I can only think of voltage. Good luck!

billbartuska 06-27-2007 09:05 PM

Re: OC advice
 
Quote:

Originally Posted by HammerSandwich
  • Opteron 144
  • 2x512MB PQI Turbo (TCCD on Brainpower)
Okay, what else can I tell you?

EEEOWWEEE!
That TCCD should be able to do DDR600 at 3-4-4-6, 1T easy.
Like this TCCD: http://valid.x86-secret.com/show_oc?id=112734
What else can you tell us? Well, that you're going to get a MOBO that will do 1.6 Vcore at least. Without that, it ain't gonna happen. Stock Vcore for an Opti 144 is 1.5-1.55 depending on which one you have

HammerSandwich 06-28-2007 12:06 PM

Re: OC advice
 
Actually, my CPU's stock voltage is 1.35V. But I agree that the mobo is the most likely culprit, at least when combined with the 144's low multiplier. The 939Dual is a great choice for upgrading slowly, but it's clearly not a max-effort OCer's board.

billbartuska 06-28-2007 02:59 PM

Re: OC advice
 
Quote:

Originally Posted by HammerSandwich
Actually, my CPU's stock voltage is 1.35V. But I agree that the mobo is the most likely culprit, at least when combined with the 144's low multiplier. The 939Dual is a great choice for upgrading slowly, but it's clearly not a max-effort OCer's board.

Well, have fun and play nice.

HammerSandwich 06-28-2007 06:14 PM

Re: OC advice
 
Will do. Thanks for the advice. I'll report back in a few months when I build a new rig.

spikegomez 01-07-2009 03:08 AM

Re: OC advice
 
Quote:

Originally Posted by HammerSandwich (Post 166298)
This post is an offshoot from here.

You can find a fuller description of my system at SPCR. The essential components:
  • Opteron 144
  • Asrock 939Dual-SATA2
  • 2x512MB PQI Turbo (TCCD on Brainpower)
  • Seasonic Super Silencer 350 Rev A3
  • Original Storm/G4
  • 10W DDC
  • Fedco 2-333 heater core
  • Yate Loon D12SL
  • Sunbeam Rheobus for both fan & pump

That is greater that mine... 2x512MB PQI Turbo (TCCD on Brainpower) is their a 1G of this now?





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A cool idea from SEO Test

billbartuska 01-07-2009 06:09 PM

Re: OC advice
 
Hey!

This thread is over a year and a half old.

ben333 01-07-2009 07:11 PM

Re: OC advice
 
Yeah but things are slow man... Though these overclocking tips are probably in less demand now :hammer:

Bill, its time for some new threads. I'll be posting my recent upgrades soon...


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