Overclocking a 6600 on a DS4 tips?

richieboy

richieboy

richieboy

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29 Dec 2004
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Hi guys,

I recently got a DS4, 6600 and 2GB of Geil 6400. Everything seemed fine so yesterday i whacked the FSB upto 300, multiplier was already on the highest (9) and changed memory multiplier to 2.66, so giving me the following:




I have heard that these 6600 can do a lot more, but am not sure exactly what other settings i should be changing when i change the FSB? Im fairly new to OC'ing, and have read both the DS3/DS4 threads which have helped me get this far, have also read the OC'ing thread but it didnt help me with what options i should change when i change the FSB. I put the voltage up a bit on the CPU, but do i need to change memory multiplier so it doesnt exceed 800mhz?

Also im not sure what to do with memory latencies, at the moment they are all set in the BIOS to 4-4-4-12 which is the GeIL's speeds, but do i need to increase them as i overclock? This is another area im confused in... :confused:

Thanks for your help, any general advice on what settings you guys use etc would be fantastic :)

Oh and im using an Arctic Cooling 7 HSF.
 
As far as i know, you should be safe setting your FSB to 330 atleast. You may have to drop your ram down to the next best setting in the bios though.
 
So set the RAM to 5-5-5-13, or set the memory multiplier down one to 2.50 (rather than 2.66)?

Would i need to increase the VCORE voltage for this, its currently at 1.32 something i think...
 
I would leave the ram at its stock timings as it should be able to cope easily (mine does)

I would also keep the vcore at stock aswell. Put up the fsb and if it is not stable try giving the vcore a little more juice then retry etc.

Have you set the vdimm to +0.3 as to get your ram to 2.1v. This is pretty essential i feel.
 
You shouldnt need to push the vcore up much if at all untill after you're past 3ghz, from what i've read.

Drop the RAM speed down a notch to be safe, cause when you increase the FSB you're gonna increase the ram speed at the same time, and your ram will give up before you cpu will. So you need to put the ram on a divider which is just making it run slower at stock than it normally would, but that will increase when you start raising the FSB for the cpu speed.

I hope that makes sense. lol
 
I have exactly the same CPU, mobo & memory setup. Update to the latest BIOS & try these settings:

Limit CPUID - Disabled
C1E - Disabled
TM2 - Disabled
CPU EIST - Disabled
Virtualization - Disabled

CPU Clock Ratio (Multiplier): x8
CPU Host Frequency (FSB): 425
System Memory Multiplier: x2
Timings: 4,4,4,12
Memory voltage: +0.3 (stock)
MCH voltage: +0.1
CPU voltage: +0.1 (1.425)
Memory Performance: Fast

Leave all the other voltage controls at default. That will give you 3.4GHz and should be totally stable.
 
Last edited:
Mcnutter


Saw your post and was currently overclocking my 6600 on a DS4 with GSkill HZ 6400 ram. The setting you provided were very helpful...I updated to the latest version of BIOS and it seems to be stable so far after 1/2hour of prime95. Couple of things thats confusing me...Easy Tune 5 is giving me a CPU speed of 3815Mhz whereas CPUZ is giving me 3392Mhz with a bus speed of 424 (multiplier 8). Also, CPUZ is showing on the memeory tab 424Mhz with a FSB:RAM ratio of 1:1 whereas EasyTune is showing a memory speed of 848 (which it should be). Is this normal for these two programs to give such results?

One other thing I dont like is the temp that Easy tune is reading....full loading about 60C...where I was running the CPU before at 1.3V at 3Ghz and getting full load temps of about 40-45C. I am using a Scyth Ninja cooler so I didnt think they should be so high...maybe see if I can lower the volatge a little and see if the temps go down.

Any comments on the above will be useful:)

One things good...running at 850 MHZ memory and 3.392Ghz on the 6600 which I was struggling to do before:D

screenshot attached....

http://img256.imageshack.us/my.php?image=screenshotqe1.jpg
 
Some applications read the default 9 multiplier with this setup and not the actual multiplier it's set to. I also get the 3.8GHz nonsense instead of the actual 3.4GHz with a lot of applications. It doesn't make a jot of difference though.

It's Double Data Rate memory so 425MHz is also 850MHz. Both are correct.

60C is perfectly fine. You only need to worry if it gets to 70C+.

It's all good. :)
 
it was more the 1:1 ratio that CPUZ was reading that I was worried about. I understand the DDR bit:)

over an hour prime stable now...so hope its good.

Thanks for the info!

Might just try and see how fast this system goes now:D
 
Lovely stuff, ill give your settings a try.

I had a quick tweak before i noticed your post, and on some settings i seem to get nothing but a flashing underscore in the top left of the screen after POST and nothing else which is strange. After which i have to hard-reset and change back the settings in the BIOS. Using the F6 BIOS. Just curious if anyone knows what thats about? :confused:
 
McNutter said:
I have exactly the same CPU, mobo & memory setup. Update to the latest BIOS & try these settings:

Limit CPUID - Disabled
C1E - Disabled
TM2 - Disabled
CPU EIST - Disabled
Virtualization - Disabled

CPU Clock Ratio (Multiplier): x8
CPU Host Frequency (FSB): 425
System Memory Multiplier: x2
Timings: 4,4,4,12
Memory voltage: +0.3 (stock)
MCH voltage: +0.1
CPU voltage: +0.1 (1.425)
Memory Performance: Fast

Leave all the other voltage controls at default. That will give you 3.4GHz and should be totally stable.
Click to expand...

Ok, i followed this exactly. But after setting these and saving, the machine shut down and turned back on (as usual), but then just kept shutting down and coming back on, nothing would appear on the display and it stayed on for about 5 seconds, then off for about 5 seconds before switching itself back on and going over it again! I cleared the CMOS and set everything as it was before, all is fine.

Whats going on, im using the latest BIOS, a Liberty 620w and set everything mentioned above...i have memtested my RAM and all is fine, and if i set all back to 9x multiplier, 300, 2.66 memory multiplier it is as solid as a rock, im confused, help?! :confused:
 
thats one annoying thing with this mobo, i can set things up in bios, save and exit, boot into windows, run orthos hours on end, shut down for the night,
switch on the next day, it go through the start>stop routine.

case panel stays off because the amount of times clearing cmos. sometimes it start, most time reset cmos job :(

leave it for some time if you can when it goes through stop-start routine , it might start.
 
mercyless said:
thats one annoying thing with this mobo, i can set things up in bios, save and exit, boot into windows, run orthos hours on end, shut down for the night,
switch on the next day, it go through the start>stop routine.

case panel stays off because the amount of times clearing cmos. sometimes it start, most time reset cmos job :(

leave it for some time if you can when it goes through stop-start routine , it might start.
Click to expand...

lol, fair enough. I'll be honest, i think ill just leave it at the settings in my first post, 2.7ghz :p . A nice little overclock that doesnt really increase temps, perfect enough for me - i guess i wont worry too much about the on/off loop if others have the same problem :eek:
 
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