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Speed-limiting AND OCing?
sluthy 
5/9/08 9:45:54 AM
Master
I'm considering what to do with my Q6600. I bought it with the intention of overclocking - TRUE120 lapped, Noctua P12, better airflow etc - and I think I do want to have a go at it.

Right now, I have no idea where to start getting into the settings (GA-EP35-DS3P), apparently there's some Alt-F# keystroke to get into those settings in the BIOS. Are there any walkthroughs specific to this model on the 'net anywhere? Google doesn't really turn up much other than people asking why it's not working, or bragging when it is.

Also, right now my system appears to have auto-speed on or something, because when I start up OCCT it reports my speed as being 1.6 or 1.8, then goes p to 2.4 once you load it up. It possible to have this auto-speed on as well as OC, because I think to OC you have to set the clock/voltage as manual, chewing away power constantly? Like have it 1.6-1.8GHz normally, only to go up to 3-3.2GHz under load?

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mark84 
5/9/08 3:56:00 PM
Hero
Guru


This thread should probably be in Overclocking.

http://www.atomicmpc.com.au/forums.asp?s=2&c=27&t=1
Should give you a good start.

For the 2nd part of your question, yes you can leave it enabled while it's overclocked. EDIT: It's called EIST in BIOS.


Edited by mark84: 5/9/2008 3:58:12 PM

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sluthy 
6/9/08 8:59:41 AM
Master
Specs as standard:

Robust Graphics Booster: Auto
CPU Clock Ratio: 9x
(CPU Frequency: 2.40GHz(266x9))
CPU Host Clock Control: Disabled
(CPU Host Frequency(MHz): 333)
PCI Express Frequency(MHz): Auto
C.I.A.2: Disabled
Performance Enhance: Turbo
System Memory Multiplier (SPD): Auto
(Memory Frequency(MHz) 800 800)
DRAM Timing Selectable (SPD): Auto

(Default RAM speeds 5,5,5,18)

System Voltage Control: Manual
DDR2/PCI-E/FSB/(G)MCH OverVoltage Control: Normal
Loadline Calibration: Enabled
CPU Voltage Control: Normal
(Normal CPU Vcore: 1.26250V)

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sluthy 
6/9/08 5:01:18 PM
Master
If I up the Host Frequency to 333 (3GHz) and leave the Voltage Control in Auto, will it up it to compensate automatically?

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Fat_Bodybuilder 
6/9/08 5:27:27 PM
Titan

The settings in this would be very similar to what you need to use on your motherboard, if not identical :-)

http://pc-guides.net/guides/q6600_oc_X38.html

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E8500 @ 4.0Ghz Daily || 2GB OCZ Special Ops || X38-DS4 || HD 4870   
ViewSonic 26" || Logitech Z4 || TJ07 || G11 and G5

Milano 
6/9/08 5:50:27 PM
Hero
Immortal


Quote by sluthy
If I up the Host Frequency to 333 (3GHz) and leave the Voltage Control in Auto, will it up it to compensate automatically?


My Gigabyte 965P-DS3P did that, & since I never picked up on it, I thought my PC wasn't made for overclocking.

I recently put more time into overclocking & discovered my mobo was overvolting when I upped my FSB, so I set it manual & now got an extra 800Mhz out of my CPU (stock voltage).

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and the world so hard to understand
is the world you cant live without

sluthy 
6/9/08 6:22:58 PM
Master
Does changing the multiplier affect anything other than clock speed, like memory syncing or anything? I'm thinking of trying 8x400 instead of 9x333.

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Fat_Bodybuilder 
6/9/08 9:04:52 PM
Titan

Well changing the multiplier only changes the clock speed, however changing the bus speed from 333 to 400 will cause the bus speed and ram speed to both increase, or the ram speed will stay the same depending on what you use for the memory ratio/multiplier.

:-)

Cheers

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E8500 @ 4.0Ghz Daily || 2GB OCZ Special Ops || X38-DS4 || HD 4870   
ViewSonic 26" || Logitech Z4 || TJ07 || G11 and G5

sluthy 
7/9/08 10:00:15 AM
Master
I have now upped the freq to 400 and the multiplier to 8x, giving me 3.2GHz. Also changing the RAM multiplier to 2 to keep the RAM at 800MHz. I upped the CPU voltage to 1.3V, and left everything else at default. The BIOS was flashing red at me saying it's "not optimised for system voltage", and the only way to change it was to put everything auto. I decided to do it regardless and went ahead.

It rebooted, and...nothing. No screen. No errors I could see or hear, but no screen. Eep. I come into the house to post on our other computer (I'm on now) and look up how to reset the BIOS in case, but leaving it alone for ~10min worked, and it's now running Prime95. Whew.

Idle temps from CPU-Z, OCCT and CoreTemp are 34,35,33,33. Prime95 has been running small FFTs for ~10min and loads are up to 60,60,57,57 or something. Should I let that go for an hour and then go to Blend?

EDIT: Another 10min later, and still 60,60,57/58,57/58. Still churning away, temps going nowhere. Yay. I'll let it reach the 1/2-hour mark then switch to Blend.


Edited by sluthy: 7/9/2008 10:21:59 AM

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Milano 
7/9/08 10:30:51 AM
Hero
Immortal


Are you sure it hasn't reset your FSB/Multi to defaults? Mine would do that if it didn't like the overclock demanded of it.

Quote by sluthy
The BIOS was flashing red at me saying it's "not optimised for system voltage", and the only way to change it was to put everything auto.


This is what I was referring to in my earlier post - by letting the BIOS automatically adjust your voltages, it can over do it & make things unstable. I changed mine to manual, didn't worry about the "not optimised for system voltage" message & was then able to successfully overclock from then on.


Edited by Milano: 7/9/2008 10:45:20 AM

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and the world so hard to understand
is the world you cant live without

sluthy 
7/9/08 10:46:25 AM
Master
Quote by sluthy
I have now upped the freq to 400 and the multiplier to 8x, giving me 3.2GHz. Also changing the RAM multiplier to 2 to keep the RAM at 800MHz. I upped the CPU voltage to 1.3V, and left everything else at default. The BIOS was flashing red at me saying it's "not optimised for system voltage", and the only way to change it was to put everything auto. I decided to do it regardless and went ahead.

It rebooted, and...nothing. No screen. No errors I could see or hear, but no screen. Eep. I come into the house to post on our other computer (I'm on now) and look up how to reset the BIOS in case, but leaving it alone for ~10min worked, and it's now running Prime95. Whew.

Idle temps from CPU-Z, OCCT and CoreTemp are 34,35,33,33. Prime95 has been running small FFTs for ~10min and loads are up to 60,60,57,57 or something. Should I let that go for an hour and then go to Blend?

EDIT: Another 10min later, and still 60,60,57/58,57/58. Still churning away, temps going nowhere. Yay. I'll let it reach the 1/2-hour mark then switch to Blend.

EDIT2: ~35min, 10K, 12K and 14K tests passed, and the highest temps were 62,62,59,59. Cranking up the two Tricool case fans lowered then about 2 degrees. Letting it return to idle temps now before commencing Blend test. I'll get the room temperature as well. Is this good?

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sluthy 
7/9/08 10:50:45 AM
Master
Quote by Milano
Are you sure it hasn't reset your FSB/Multi to defaults? Mine would do that if it didn't like the overclock demanded of it.



The next time I rebooted it, the POST screen even said 3.2GHz, and that's what CPU-Z and CoreTemp are reporting, so the change did stick. When it came back up, Vista reported an unexpected shutdown 2 min earlier, which means my reset must've been while Windows was up. Display/VGA issue then?

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Milano 
7/9/08 10:59:29 AM
Hero
Immortal


Did you get the Easy-tune software with that mobo? If yes, fire it up & check your voltages - has your RAM voltage gone way up above its default? & has the CPU voltage gone above the 1.3v you set it to?

I'm not sure what the default voltage levels should be for your CPU/RAM, but i'm thinking that AUTO mode has upped your voltages & caused things to play up a little, even though your tests seem fine.


Edited by Milano: 7/9/2008 11:01:01 AM

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and the world so hard to understand
is the world you cant live without

sluthy 
7/9/08 11:36:16 AM
Master
I've just installed the EasyTune software and gone to restart, and I decided to drop into the BIOS to check a few things...and the BIOS and POST screens were a LOT slower than usual. As in move-and-move-and-move, instead of instant like before. Then it went into Windows - with a black screen. The "Welcome" chime went, then black, and went I moved the mouse I got a quick glitch, and a restart. I'm now back in the BIOS screen wondering what to do. Everything's back up to full speed now, so something's changed. Maybe the RAM voltage has something to do with it - when I started up EasyTune, it said the RAM voltage was 1.85 (CPU 1.325). Is that normal?

EDIT: ...it's not liking it. I just rebooted with the same settings, and it all worked fine. Logged in, browsed around for about 3min, then glitch/all white screen for about 10sec, then reboot. Drop back to 3GHz and put all voltages back then?


Edited by sluthy: 7/9/2008 12:35:24 PM

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sora3 
7/9/08 12:40:07 PM
Immortal

Well, it seems you've hit something called stability issues. The motherboard couldn't take it by the looks of things. Drop it back down to the last stable result and fine tune it there.

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Embrace your dreams and never forget your honour.

Quote by Jen-Hsun Huang
"How much faster can you render the blue screen of death?"



sluthy 
7/9/08 1:03:00 PM
Master
Yeah, I'd figured it to be something about stability issues. I think the issues with stability gave it away :)

I'm back up with 9x333, RAM multiplier 2.4 (800MHz), CPU voltage and all other settings stock. No crashes so far (touch wood), will run OCCT overnight.

It's odd though, it seems the CPU could take the OC fine - I thrashed it for an hour with no sweat. It looks like the RAM or almost the video card couldn't take it - I wouldn't need to up the RAM voltage if it stays at 800MHz would I? EasyTune reads the same 1.85V with these settings and the 'faulty' ones.

Should I update my BIOS first though? I'm on F1.

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sora3 
7/9/08 1:19:11 PM
Immortal

Well, updating the BIOS does help out as it irons out any bugs or adds fixes to the motherboard.

If you are going higher than the usual spec for the RAM, then adding some voltage will help out. But conversely, you need to be aware of the consequences of adding voltage does. Mine sits at 1.9v which is probably the max I was want to take my generic to. But your RAM depends on the memory chips used. Which brand is it?

-----
Embrace your dreams and never forget your honour.

Quote by Jen-Hsun Huang
"How much faster can you render the blue screen of death?"



sluthy 
7/9/08 1:39:22 PM
Master
A-DATA, fairly generic I think.

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Milano 
7/9/08 3:01:10 PM
Hero
Immortal


Yeah I upped my RAM (Kingston value select) to 1.9v (from 1.8v default) to get things stable & i've had my CPU running @ 2920Mhz (2130 default) & RAM @ 730 (667 default) for about a week now.

I've just tried to bump my CPU to 3Ghz, but OCCT failed after 7 minutes, so I think we may have the same problem, sluthy - RAM or CPU voltage may need gradual tweaking. Like sora3 mentioned - find out your max recommended voltages on your RAM/CPU & tweak up to those levels.

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and the world so hard to understand
is the world you cant live without

sora3 
7/9/08 3:31:57 PM
Immortal

Another thing is to burn in the CPU and memory at a specific speed then to up the voltage and speed later. Think of it as tuning a car. In order to get it up to full spec, one must slowly get it up and running.

-----
Embrace your dreams and never forget your honour.

Quote by Jen-Hsun Huang
"How much faster can you render the blue screen of death?"



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