New board, new issues...

[Elysium]

OK, so a lot has happened since I last posted in this thread. I have gotten 3.33GHz (370x9) stable with my E4300 at 1.47V, the maximum volts I feel comfortable using with my current cooling setup. Anything more (even 380x9) it will fail Prime 95 (v25.5) within the first 5 minutes. The RAM was at the 333:667 divider, by the way.

So I decided to drop the multiplier down to 8x to see if my RAM or the motherboard itself was holding me up. Since the CPU was known to run 3.33GHz just fine, I bumped the FSB up to 400. At this point the RAM was running at 800MHz, what it is rated to do, and the CPU was at 3.2GHz. The computer booted up fine and it successfully passed 20 minutes of Prime95. I decided to bring the FSB up to 410. RAM was now at 820MHz, not an insane overclock, and I think we all agree that the RAM (which is running Micron D9 IC's mind you) can overclock 20Mhz.

No POST.

I reset the CMOS jumper and put all settings back at their previous settings, except the FSB. I put the FSB at 401MHz (CPU at .~3.2GHz, RAM at 802MHz).

No POST, yet again.

What am I doing wrong here? Not even 1MHz over 400FSB... I think that is pretty strange. Help?

[screwballl]

guess the mobo sees that it is 800Mhz memory and wont let you go over that. it liekly is a great board for OC the cpu but not the memory... or the board is picky about the memory so it forces you to run it in spec or else it won't post. keep memory at 800 and kick up the cpu fsb, thats likely your only option.

[Elysium]

Originally Posted by screwballl

guess the mobo sees that it is 800Mhz memory and wont let you go over that. it liekly is a great board for OC the cpu but not the memory... or the board is picky about the memory so it forces you to run it in spec or else it won't post. keep memory at 800 and kick up the cpu fsb, thats likely your only option.

You can only do that with Nvidia boards (you can set the RAM and FSB to be "unlinked")... the RAM and FSB is running in a 1:1 ratio, so I guess my only option is getting some new RAM... right?

Wait... that can't be right... I had this RAM running at ~850MHz when I had the FSB at 350 and the RAM in a 333:800 ratio with the FSB... so you are able to overclock RAM with this board. It must be something else. Maybe up the NB voltage? An FSB "hole"?

[Athildja-x64]

what vDIMM do you have on the RAM?
you may need to bump up that and the FSB Voltage
I have had a similar issue with the Gigabyte board I have (P35-DS4)
I can run at 450x8 all day long and 445x9. but if I push the RAM (PC2-9200) over 900 (CPU/2) the Board will not post.
Now I have run this RAM at 1300MHz on other boards but this P35 will not do it.

[Elysium]

The RAM voltage is at 2.1v, what the manufacturer recommends for 4-4-4-12 800MHz. Should I push it higher than that? I actually have the RAM at 5-4-4-12 because the board automatically set it to that.

[RangerXLT8]

Try bumping up the FSb\memory voltages, one notch.

[Elysium]

Originally Posted by RangerXLT8

Try bumping up the FSbmemory voltages, one notch.

I'll try it. I'm a bit resistant about this though. The NB is already running a bit hot because there is no active fan around it because the CPU is water cooled. Same with the RAM...:dontknow: