450 FSB Quad-Core BIOS Settings

In the true spirit of giving we present to you an easy, all-in-one overclock setting guide, practically guaranteed to have your 65nm quad-core stable at 450MHz FSB or greater. You may find the need to increase the voltage for your particular CPU higher than our suggestions if cooling permits.

ASUS P5E3 Deluxe Quad-Core Setup Guide for 450FSB
CPU Features
Ai Overclock Tuner Manual
CPU Ratio Control Manual
CPU Ratio Setting 8
FSB Strap to North Bridge 266
FSB Frequency 450
PCIE Frequency 115
DRAM Frequency DDR-1800
DRAM Command Rate 1T
DRAM Timing Control Manual
DRAM Timings
CAS# Latency 7 DRAM Clocks
RAS# to CAS# Delay 7 DRAM Clocks
RAS# PRE Time 7 DRAM Clocks
RAS# ACT Time 15 DRAM Clocks
RAS# to RAS# Delay Auto
REF Cycle Time Auto
WRITE Recovery Time Auto
READ to PRE Time Auto
READ to WRITE Delay(S/D) Auto
WRITE to READ Delay(S) Auto
READ to READ Delay(S) Auto
READ to READ Delay(D) Auto
WRITE to WRITE Delay(S) Auto
WRITE to WRITE Delay(D) Auto
DRAM Static Read Control Disabled
DRAM Dynamic Write Control Disabled
Ai Clock Twister Strong
Ai Clock Skew for Channel A Auto
Ai Clock Skew for Channel B Auto
Ai Transaction Booster Enabled
Boost Level 2
Voltage Settings
CPU Voltage 1.475
CPU PLL Voltage 1.6
FSB Termination Voltage 1.5
DRAM Voltage 1.96
NB Voltage 1.61
SB Voltage Auto
Clock Over-Charging Voltage Auto
Load-Line Calibration Disabled
CPU GTL Voltage Reference Auto
NB GTL Voltage Reference Auto
CPU Spread Spectrum Disabled
PCIE Spread Spectrum Disabled

More BIOS Setup and Tweaking General Memory Performance Scaling and Command Rate


View All Comments

  • frede86 - Tuesday, September 2, 2008 - link

    hey folks

    nice guide u made there m8.

    but ive tryed to use that setup u recomment.

    but doenst work. how come? is it because i use a dou core E8500?

  • frede86 - Tuesday, September 2, 2008 - link

    Core 2 dou* Reply
  • cEvin Ki - Saturday, February 23, 2008 - link

    after reading the information on the AI transaction booster, and the Memset program, i decided to brave up, and give it a go. Memset indicated that my performance level was a 7. as my ddr2 CAS was 4, i assumed that the bios was relaxing my system a little. i simply disabled the booster option in bios with a relax of zero. rebooted, and re-ran Memset. nothing had changed. still a 7. any settings other than disabled and zero, in bios, will not POST. Memset allowed me to change the performance level to 6, apply, and save the change. nothing has changed in bios as a result of that change.

    my question is, what am i doing wrong, as i would expect to have seen something different in Memset with changing the bios to disabled and in effect lessening the relax?

    i apologize if i have somehow missed the whole point, and do not understand this memory tweaking concept.

  • jwigi - Thursday, February 14, 2008 - link

    Hi I have a P5k Premium and the contact between the heatsinks and the board aren't very good, i was wondering what size of screw you used and also if you needed to put any springs on them, i'm thinking of doing the same 'mod' you've done in your article on my board...

  • plextor10000 - Thursday, January 10, 2008 - link

    I was already one day playing with the settings of the mainboard, first tried to boost the E6850 from default 3Ghz to 3.6 , but could not make it stable in benchmarks

    Switched to the Q6600 - and followed the guide , decrease the voltage for the CPU to 1.375 , for safety .

    After step by step, i increased from 2.4 without any issue to 3.6 , running stable with my patriot 1333 on 1600

    Thank you for this guide. Can i use the same settings for the E6850 also , or do i modyfie some settings to blaze the clocks of it ??
  • Ryujin - Sunday, January 6, 2008 - link

    I recently got this board, and after reading this article, I really want to follow the advice therein and remove the thermal pads underneath the heatpipes/heatsinks and replace them with thermal paste, and replace all the plastic push-pins with screws/nuts.

    I've yet to start fiddling with the board, as I am still waiting for the CPU to arrive. A few pieces of advice I was looking for to ease my mind though:

    - Would I be mad using Arctic Silver thermal compound, considering conductivity issues? (I could get ceramique, which is non-conductive, but it'll take quite a while, through the channels I wish to use).

    - What diameter / length screws do you recommend? I figure 10mm M3 screws with lock nuts should do the trick... If they're too long, I should be able to screw them in with the heads facing the MB-tray.

    - I'm going with a liquid cooling solution for my CPU. The P5E3 Deluxe included two fans that can be placed atop the heatsinks surrounding the CPU-socket for just such an occasion. However, I suspect they're rather noisy (are they?). Also, the case I'm using is the Coolermaster Cosmos, which does have ample chassi fans, so I'm wondering it is really necessary (time will tell, but I was wondering if anyone has any opinions on the subject).

  • kmmatney - Tuesday, November 20, 2007 - link

    OK, looking at the graphs, it just seems like all I'm seeing is the benchmarks getting better with higher overall cpu speed. The overclocking guide was good, but the benchmarks are hard to figure out, since memory speed and cpu speed are getting higher at the same time. Reply
  • kmmatney - Tuesday, November 20, 2007 - link

    OK, figured it out - we just need to compare the Asus P5E3 scores versus the Asus Maximums scores at (8 X 465) to see how much DDR3 improves things over DDR2. Seems to be 1%-5%. Yawn... Reply
  • TA152H - Tuesday, November 20, 2007 - link

    When I read the article for the x48, I mentioned that it made no sense for the three chipsets unless the x48 was DDR3 only. Well, I have found out from another site that it will be DDR3 only.

    That makes the x38 really only useful as a DDR2 chipset, after the x48 is available. This assumes Intel did the right thing of course, and all the ugly overhead for DDR2 is removed from the x48. But if it is, you'd have to be a fool to buy the x38 with DDR3, since it is second best, and has overhead from a function that will not be present on the motherboard. It will give you more heat, and more power use for something that is completely useless. I didn't like Intel including both, but I guess it was to transition to DDR3, so it was a necessary evil until the x48 comes out.
  • retrospooty - Friday, November 23, 2007 - link

    actually, that isnt true. X48 is just an X38 selected out of speed bin to be the fastest. They were going to market it as only DDR3 (that was a marketing decision not a functionality decision) but have since changed their minds.


    Either way your arguments are pretty one sided. Even with DDR3 highly overclocked to 2ghz its really only a slight bit faster then DDR2. In fact DDR2 at 1000mhz 4-4-4 beats DDR3 at 2000mhz @ 9-9-9 in most real world tests and apps. Intel is currently going with tri-channel DDR3 on the next gen CPU (nehalem) with internal memory controller. Then and ONLY then is DDR3 going to be worthwhile, and even then its only worthwhile because Nehalem chipsets wont support DDR2. DDR3 is a minor speed bump not worthy of spending money on until Nehalem comes out.

Log in

Don't have an account? Sign up now