Make sure you watch your core temperatures though, as increasing the voltage linearity will cause the core temperatures to rise exponentially.Ĭlock Over-Charging Mode - Quoting Anandtech "Maximum of 1.00V. I would try to see if you can hit 3.4 GHz while keeping your core voltage below 1.35 V. Once you find an overclock you are happy with, you can play with the RAM divider later to operate it faster (asynchronously with the FSB).įor your RAM to run in 1:1 ratio you would need to use an FSB speed of 400 MHz (3.6 GHz sounds pretty good and your core temps are good as well. There is a thread here about which voltage to raise first.Ĭlick to expand.It is OK to be underclocking your RAM for now as you want to figure out what your fastest CPU speed is. Unless you have an amazing overclocking chip (9 x 445 = 4 GHz) it's unlikely you'll need to touch the NB voltage. I have a P5K Deluxe and just left my NB voltage at AUTO and was able to get the FSB up to 445 MHz. You probably won't need to touch your NB voltage until you get into extreme FSB overclocking. Your RAM will operate with 4-4-4-12 timings up to 400 MHz FSB, so unless you go past the 400 MHz FSB mark you won't have to touch your RAM timings or voltage. Make sure you have your RAM set to 1:1 ratio so you aren't trying to overclock both the FSB and the memory. The overclocking guide recommends 65 C as a good conservative maximum load temperature. If the voltages and temps are reasonable try 3.4 GHz. If you want to make a jump, try to get it stable at 3.2 GHz and see what temps and voltages you need. I wouldn't just raise your FSB to 400 MHz as your system might not POST, and your chip might not be able to handle a 3.6 GHz overclock regardless of the core voltage you set.
3.6 GHz overclock)Īs long as you use either to stress-test your PC it shouldn't matter if you use Prime or Orthos. Your RAM will be able to handle a FSB speed up to 400 MHz with the 4-4-4-12 timings, so RAM instability shouldn't be an issue until you start going above FSB speeds of 400 MHz (i.e. Personally, I wouldn't go over a core voltage of 1.45 V to keep a reasonable core temperature as well as preserve the life expectancy of the chip.
I would start by increasing your FSB in steps of 10 MHz and see when you start hitting instability when either booting into Windows or running Orthos before bumping up the voltage by an increment.
I'm assuming you are running your RAM to FSB ratio as 1:1. I like to run it for more than 8 hrs once I have found an overclock speed I want to keep. Make sure you run Orthos atleast a few hours to ensure stability. Yours should be pretty low since your core voltage is low for a 3.0 GHz overclock (which is good). What are your temperatures under load when running Orthos on all 4 cores as read by CoreTemp? Around 50 C is a good number for a quad core machine.
Have you seen the overclocking C2Q and C2D sticky thread yet? There is some good advice there. Yes, you are on the right track by changing the FSB and core voltage.