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OCing Q6600 for the 1st time. Have questions - Page 2

post #11 of 18
Thread Starter 
What would happen if I raised the FSB beyond what my 1333 RAM is rated? Lets say I up the FSB to 360 which puts my OC at about 3.2GHz. The RAM would be at 1440 which is about 8% higher than rated. Would this result in a possible need to increase the voltage of the RAM, burn the RAM up, or work without adjustments?

Are there any guides that focus on adjusting voltages?
post #12 of 18
It's fine your fsb can run at 1600Mhz but you need to downclock your ram to 800Mhz, so it runs 1:1 ratio with your fsb, so they both run at 400Mhz (but it turns into 1600Mhz because it gets quad boosted)
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post #13 of 18
Just set 1:1 for now and get your CPU finished. Then work on RAM after you know your CPU is at a stable OC.

To answer your question, yes you'll likely be unstable. Different RAM models or even different sticks of the same model will have different overclocking capabilities. You may be able to get higher clocks by bumping VDIMM and/or raising latencies, or it may just crap out at a certain speed.
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post #14 of 18
Thread Starter 
Thanks everyone. It looks like I'm understanding what is going on. Now for some trial and error...
post #15 of 18
Quote:
Originally Posted by 2thAche;12568155 
Just set 1:1 for now and get your CPU finished. Then work on RAM after you know your CPU is at a stable OC.


this ^^^^ always oc the cpu first and then the ram.
i have an older Q6600 B3 stepping cpu and they are not as good for overclocking as the G0 stepping cpu's.
as said above, i unlinked my ram, so it stayed at 800mhz.
then i overclocked the cpu to 413 x 8 = 3.3GHz. (i couldn't get past 300 with a x9 multiplier)
i tested this, and it was stable.

then in the bios, it gave me options at what speed i wanted to run the ram at. (dram frequency)
i chose 995mhz and it tested stable.
also 2 sticks of ram is easier to oc than 4 sticks.
i did have to add more cpu vcore, but just a couple of notches

good guide here, different mobo, but most of the options are the same
http://www.clunk.org.uk/forums/overclocking/2-c2d-overclocking-guide-beginners-p5k-add.html

a few tips.
if a mobo says it supports a fsb of 1066mhz then you divide this by 4 for the cpu fsb.
eg. 1066/4 = 266fsb then x 9 = 2.4GHz or 1333/4 = 333 then x 9 = 3.0GHz
with the ram you double it or divide it by 2
my ram in cpu-z is 495MHz which is 990 mhz (495 x 2 ((dual channel))
Edited by j.col - 3/1/11 at 1:29pm
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post #16 of 18
Quote:
Originally Posted by TDF;12566096 
What would happen if I raised the FSB beyond what my 1333 RAM is rated? Lets say I up the FSB to 360 which puts my OC at about 3.2GHz. The RAM would be at 1440 which is about 8% higher than rated. Would this result in a possible need to increase the voltage of the RAM, burn the RAM up, or work without adjustments?

Are there any guides that focus on adjusting voltages?

if its decent ram then it should be fine
what is the stock voltage?
mine is 1.8v, but i set mine to 1.9v and its fine,
my ram stock speed is 800mhz, and i have it at 990mhz.
but i have left the timings on auto 5-5-5-18
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Old Slow Hand
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post #17 of 18
Thread Starter 
Quote:
Originally Posted by j.col;12572626 
if its decent ram then it should be fine
what is the stock voltage?
mine is 1.8v, but i set mine to 1.9v and its fine,
my ram stock speed is 800mhz, and i have it at 990mhz.
but i have left the timings on auto 5-5-5-18

J.Col:
Thanks for the good info. I have G.Skill Ripjaw series RAM, 2x4 1333 DDR3 RAM. Stock Voltage is 1.5v. Is your CPU-Z RAM rated at 1333, or 1600?

Edit: Nevermind, you must be using DDR2.
Edited by TDF - 3/1/11 at 5:24pm
post #18 of 18
Thread Starter 
Ive heard the term quad pumping in relation to FSB. Does this mean a FSB of 1333 for a quad would be 667 for a Core 2 Duo with the same settings?
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