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Coming back to OC'ing

post #1 of 4
Thread Starter 
He there... it's been awhile since I've been here - I was going to build a new AMD rig a few years ago but life's many unexpected circumstances got in the way. Everyone here at the time helped me out deciding on parts, unfortunately I never got around to building it back then.

FAST FORWARD and here I am, back to tinker, with a new rig - starting with a Conroe E6600. Built the rig myself, as I have the last 4 computers I've owned, but here's the thing: I am a little lost now with trying to do some overclocking. On my old rig the BIOS was easy to follow, and I got my stock 2.4gHz Northwood to 2.8gHz. I'm on an ASUS board now, selected by reputation and research, but I'm a little confused on where to start. I was recommended to try these settings for a mild clock:

CPU freq. 333
PCI clock synchro 33.3mHz
Spread spectrum to disable
Memory voltage to 2.0v
CPU Vcore to 1.425v
NB Vcore to 1.45v
Change timing to 4-4-4-12

...and that's where I'm lost. Scanning these settings in my BIOS for the CPU overclocking, I reached this screen (similar to photo from another forum):

http://www.motherboards.org/images/r...1687_p7_4.jpg?

...Don't see where to set frequency, PCI clock synchro, etc. I also found what I think to be the memory timing screen, but there's not 4 but 5 settings I can tinker with (pic from another forum):

http://www.motherboards.org/images/r...1687_p7_6.jpg?

Does the 4-4-4-12 correspond to tCL-tRCD-tRP-tRAS? Someoe told me the "12" would go in CMD... so I'm not so sure where to go with this yet.

I'll admit, after successfully overclocking my old rig back in the day, I'm feeling pretty newb here trying to figure the new rig out. Can anyone point me in the right direction? Not looking for a holding hand here - just some clues =)
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Hello Baby
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post #2 of 4
OK, first things first
You need to start by seeing what each component can do seperately first, and then you can put it all together for a complete overclock

Go into the BIOS and in advanced setting/overclocking (can't remember what it's called exactly) and set the AI tuning to 'manual', then go into the bus speeds and set the ram to 'unlinked' and set it at 667 (default speed for you RAM) and then set your FSB to 1400 to start (remember the C2D is quad pumped so you have to multiply the FSB by 4 to get actual speed, this sets your FSB at 350)
Next go into overclocking and set your multiplier to 7 (this will set your CPU speed to 350x7, so 2450mhz, about stock which is what we want for now)
Now go into overvoltage and set the NB to 1.4~1.45 and set the SB to 1.5 (this should be default) and set your RAM to 2.0 and set your VTT to 1.45~1.5, leave all the rest default; just trying to see what the MB can do for now. Restart and see if you can boot into windows, run Orthos for a couple hours to confirm that everything is stable, if you crash or lock-up try upping the NB volatage frist then the SB, although I'm pretty sure this will be stable, the MB is the easiest part to OC

Next it's onto the CPU
Boot back into the BIOS and change your multipler to 9 (default for the e6600) and back the FSB down a little bit to ~1300, this will set your CPU speed to 2925mhz, go back into overvoltage and set the vcore to 1.38~1.4...up the volatge until you can boot into windows, you want the lowest possable however; if you can boot into windows run Orthos again for a couple hours and confirm that your stable, if you crash, restart, or lock-up try upping the vcore a bit more, and you might also have to bump up the VTT.

As soon as the CPU is stable download Memtest and burn the ISO to a CD. Now go into the Overclocking and in the bus speeds try to set the RAM at 800~900mhz to start and then to the RAM timings and set them to:

CL- 1 (try and keeps this here)
tRCD- 4 (you can up this if unstable)
tRP- 4 (you might have to up this before the other two 4's)
tRAS- 4 (you can up this if unstable)
CMD- 12~15 (set this at 12 and up if unstable)

Set boot order to boot from CD first and insert the Memtest CD you just burned and, save and restart, let Memtest do it's thing for at least a couple of hours and make sure no errors pop-up. If you get any errors try backing off the speed a little or upping the voltage (don't exceed 2.2 volts for 24/7 use).

Good luck!
And you should run Orthos and Memtest for at least 8+ hours to confirm your system is completely stable, although a few hours would be sufficient to start
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post #3 of 4
Thread Starter 
Ok I poked around in BIOS and there's two things I don't understand from your suggestions: "VVT" and which of my BIOS settings are for the southbridge.

When I go to the voltage menu I get "VCore" "Memory" "NBCore" and "VCore offset" voltage choices.

Also, for the NB I don't think there's an option to key in a specific voltage - the only choices I get in BIOS are 1.208v, 1.393v, 1.563, and 1.748v.

I've been looking through the P5N-E stick thread for some tips but it's like a billion pages long LOL
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Hello Baby
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post #4 of 4
Quote:
Originally Posted by l2aine View Post
Ok I poked around in BIOS and there's two things I don't understand from your suggestions: "VVT" and which of my BIOS settings are for the southbridge.

When I go to the voltage menu I get "VCore" "Memory" "NBCore" and "VCore offset" voltage choices.

Also, for the NB I don't think there's an option to key in a specific voltage - the only choices I get in BIOS are 1.208v, 1.393v, 1.563, and 1.748v.

I've been looking through the P5N-E stick thread for some tips but it's like a billion pages long LOL

OK, I have the P5N32-E so I listed setting that MY board has, I thought maybe the 650i version had the same, obvisouly some of them are not there though

So just ignore the VTT if you don't have that option, if you did it would be at the bottom of the voltage screen listed as "CPU VTT Voltage".

OK, so obviously the SB is not adjustable either, which isn't really a problem, you really shouldn't have to adjust anyway

So just set your NB to overclock the board first, then the Vcore to OC the CPU next, then the Memory to OC the memory last

And set the NB at 1.39 first to see if that is stable, if not go to the next one up, I wouldn't recommend going to 1.74 though!
That's a little too high.

Do you have aftermarket cooling for the NB btw? If not watch those temps closely. The NB can get hot very quick. I would suggest coretemp to monitor CPU temps, if version 0.95 gives you problems try version 0.94. And try NTune to monitor board temps (when installing only select the monitor, don't use this to OC).
My System
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Q9550 SLB8V (E0) -STOCK ATM- GA-EP45-UD3P Rev 1.1 EVGA 8800GTS 640 @ 680/1026 2 x 2GB G.SKILL PC2-8500 
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WD VelociRaptor 300GB Vista SP1 x64 Acer AL2216W 22" LCD Logi - wireless 
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My System
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CPUMotherboardGraphicsRAM
Q9550 SLB8V (E0) -STOCK ATM- GA-EP45-UD3P Rev 1.1 EVGA 8800GTS 640 @ 680/1026 2 x 2GB G.SKILL PC2-8500 
Hard DriveOSMonitorKeyboard
WD VelociRaptor 300GB Vista SP1 x64 Acer AL2216W 22" LCD Logi - wireless 
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PC P&C Silencer 750w Cooler Master Centurion 534 (custom) Logi - wireless 
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