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going past FSB 350.....

post #1 of 16
Thread Starter 
hi,

I can't get the board to accept a FSB higher than 350.
I've read that others have exceeded this without messing with voltages so I'm confused as to what is wrong with my attempt?

I have
ASUS P5E3 deluxe
Intel Core 2 Quad Q9450 (stock 8x333 = 2.66)
OCZ OCZ3P13334GK 4GB KIT (2GBx2) 1333MHZ 240-PIN DDR3

Please bear in mind that I an new to this and am not looking to be hand held. Just want a slap if I'm missing something obvious or a hint in the right direction. I've done a good bit of reading on this so far but I can't get anything coherent to give me a solid idea of what to fix!!

Success=
So I've left everything at auto except to rate the multiplier at 8 and the FSB at 350. Everything good - oc passes and OS boots. Up to 2.8Ghz and I see that RAM is up to 700Mhz and timings have loosened to 9-9-9-24.

Failure...
changing the FSB to anything from 351 up. oc fails. no opportunity to boot OS.

Any hints as to what is causing my problem? Voltage (I've tried changing the CPU voltage to 1.2V)
Is this RAM ok for what I am trying?
Any hints on how to progress in general?
Slap on the head!....but why!?

Thanks
post #2 of 16
Thread Starter 
no one is helping me !!!!

I'm just learning here so any help is appreciated.

anyway I got it to work........
figured out that setting the bus to 375 for example was driving the ram at 1500Mhz because a default ratio of 1:2 was being employed.
RAM obviously wasn't coping with this at stock voltage.

so I dropped the DRAM to 940Mz (using a ratio of 4:5) and I got booted up at 3Gz!

So presumably I'll be able to push the DRAM harder by increasing the voltage?

Is the system worse off now with the processor running at 3 GHz but the DRAM working slower? I'll try some tests......
post #3 of 16
Put your processor at 1.325vCore
Northbridge/MCH at 1.4+ (mine is at 1.55)
Unlink your ram and set to factory specs including voltage.
FSB voltage at 1.4+ (mine is at 1.475)

EDIT: Tightening up ram timings and MHz will only make it faster, the more you mess with it the more likely you are going to learn everything about your RAM lol.
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post #4 of 16
first of all, you have to wait longer than 3 hours to "bump" your thread. It can takes a bit (especially in the mid day) for people to respond.

2nd: Welcome to OCN. Please enter in your system specs by clicking on the "Control Panel" button up top followed by the "Edit System" button and then fill out your system specs. It does make everything a lot easier.

3rd: It sounds like you need to a)find out what your VID is (by downloading CoreTemp. This tells you what your VID is, and once you have that, go into your BIOS and set your vcore to that number. Then see how your OC goes.

With you computer not being able to boot and the FSB speed: Sounds like either the ram can't handle the speed or your vcore is just a bit too low for the power it's drawing, or your NB voltage needs to be upped. Also, when OCing ram, there is a certain amount of voltage that is "good" and a certain amount that is "bad". But when OCing, loosen your timings, and then increased the speed, but voltage can only get you so far.

I hope this helps a bit, and again, Welcome to OCN!
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post #5 of 16
yeah i would say its probably the lame ram thats holding you back. my experience with that board says you can pull at least 468fsb with a quad
    
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post #6 of 16
Maybe you have whats called a "Front Side Bus Hole". Try upping 5 mhz at a time until it boots. My motherboard has a fsb hole from 1460 to 1500ish. Anywhere in there it won't even post, no matter what voltage I give my componants.
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post #7 of 16
That's gotta be way too low to be an FSB hole, plus he's at 1.2vCore and stock is 1.3+
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post #8 of 16
Thread Starter 
hi there.
I was only kidding when I said no-one was helping....some jokes just don't work properly written down..! Just for the record I wasn't moaning....

edit: yikes hit enter...wasn't finished!

I got up to 400FSB so 3.2 GHz and the DDR3 was running at 1334 (667 per dimm).

I'm pretty happy to have achieved that and I've learned a few things reading round.
I've read I can get this RAM up near 1600 but what I was missing was that I need to loosen the timings.....I'll try that and some of your suggestions above tomorrow. It's after 1am now here in Ireland and I need to be in bed a long time ago.


thanks for all the help above. I'll try it all out.
All the best.
Edited by ice9 - 5/29/08 at 5:15pm
post #9 of 16
Thread Starter 
thanks again for the help.

I'm pretty happy with FSB 400, achieving a rating of 3.2Ghz.

Can I ask about my RAM?
I have 2x2GB OCZ platinum DDR3 1333

I thought I'd like to have this at 1600 to have a nice 1:2 ratio with the FSB.

I can't seem to get it to boot up. Not only that but I have to clear CMOS to get going again. Seems to be so wrong I can't even boot back into the bios!!!

Here's what I did.....Set timings to 999 24 at 2T and set the voltage to 1.9 (within warranty).

Is it just not possible to push this RAM to this or am I doing something silly?
Thanks
post #10 of 16
You can't get to the BIOS?

Take out the power cord and battery on the mobo for about a minute. That clears everything out of the BIOS, so remember what you have.

9-9-9-24?

Interesting. Set that last timing (TRAS I think) to the slowest(highest) number you can. Your timings seem very loose for DDR3 1333.
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