jgv115 Posted February 20, 2009 Posted February 20, 2009 I got a Pentium 4 520 Prescott (yea i'm old school) I followed that C2D and C2Q guide that is stickied and I learnt a lot. The normal speed of the CPU is 2.8ghz - 200 X 14 The motherboard is P5GD1 PRO and it only supports up to DDR400 RAM. So divide 400 by 2 is your maximum FSB speed right? I got my CPU to 3.05ghz without changing the vcore and it runs at the same temperature that it does when it's at 2.8ghz The FSB is 218 and the multiplier is locked at 14. I found out that the max FSB i can achieve is 218 i can't get any higher, i can't get 219... Does anyone know why? Other info: Memory - 2.6V PCIE - 1.5V and my DRAM frequency is 178.4mhz and my FSB:DRAM is 5:4 Am i doing things right? How can i achieve a better clock thanks in advance! Share this post Link to post Share on other sites More sharing options...
Waco Posted February 20, 2009 Posted February 20, 2009 It's entirely possible your motherboard just isn't stable at higher FSB speeds. To test this you can relax your memory speeds to well within safe limits and reduce the CPU multiplier as well. If the motherboard still won't stay stable at a higher FSB you've simply hit the limit of the board. Share this post Link to post Share on other sites More sharing options...
jgv115 Posted February 20, 2009 Posted February 20, 2009 um.. i don't know if I can change the multiplier of the board. Because my CPU isn't an extreme one i can't change it. But i can change my RAM speed to around 200mhz... i'll do it now Share this post Link to post Share on other sites More sharing options...
Waco Posted February 20, 2009 Posted February 20, 2009 You can reduce the multiplier AFAIK, you just can't raise it. Share this post Link to post Share on other sites More sharing options...
jgv115 Posted February 20, 2009 Posted February 20, 2009 yay! i got the FSB to 230 now i am running at 3226mhz! I'm still at the minimum vcore as well I'm going for more Share this post Link to post Share on other sites More sharing options...
jgv115 Posted February 20, 2009 Posted February 20, 2009 (edited) I keep going up by 2 and i'm at 250 FSB same vcore at 3.5ghz How far do you think i can go? without changing the vcore because i got stock fan+ heatsink Edited February 20, 2009 by jgv115 Share this post Link to post Share on other sites More sharing options...
jgv115 Posted February 20, 2009 Posted February 20, 2009 ok i can't go any further than 251. even with a raised vcore. anyone know why? Share this post Link to post Share on other sites More sharing options...
supergeek101 Posted February 20, 2009 Posted February 20, 2009 First, what happens when toy go from 218 to 219? Does it fail to boot or doesn't post? Does the same thing happen when trying for 251? Share this post Link to post Share on other sites More sharing options...
Kingfisher Posted February 20, 2009 Posted February 20, 2009 ok i can't go any further than 251. even with a raised vcore. anyone know why? I'm glad you are having some success clocking your hardware. The only way to "know why" is by sitting in front of your pc and testing it,which is something only you can do. Hardware behaves different inside different pc's even though it is the same outside of a pc. You are the only one who can figure out why, all we can do is offer suggestions and would be guessing at best. Good luck. Share this post Link to post Share on other sites More sharing options...
battery Posted February 20, 2009 Posted February 20, 2009 try upping the chipset voltage. i would upgrade your cooling. Share this post Link to post Share on other sites More sharing options...
IVIYTH0S Posted February 20, 2009 Posted February 20, 2009 I know they make prescotts that are 3.2ghz from factory so I'm not surprised you haven't had to raise the vcore yet, and techically since your fsb is higher, your prescott is faster than the stock 3.2's haha. Good work so far Share this post Link to post Share on other sites More sharing options...
Waco Posted February 20, 2009 Posted February 20, 2009 Considering how fast you cranked it up I'm sure you didn't do any real stability testing. How do you know your memory, CPU, or chipset is running stable even at 220? Share this post Link to post Share on other sites More sharing options...
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