QX6700/P5W-DH/Vapochil LS

[harvshark]

I am currently running a new rig, P5W-DH w/ QX6700, TTBT w/fan upgrade for cooling, getting 3290mhx 329 x 10 at 1.375vcore, about 44-46c full load. Seems to brick wall about here, more vcore doesn't seem to help, tried upping MCH and FSB volts on mobo, actually made it worse.
Question is, has anybody sucsessfully Vapochilled a QX6700 OC? The few things I have found in searching the net seem to have referred to using ES's, and I don't trust those results compared to a retail chip.
I am considering the Vapochill LS, but would like to have some idea what I could gain if it's gonna be worth the $850.00 or so, or if the quaddys don't respond well to sub zero.
Thanx for any input or links to actual results.

[shimmishim]

you've probably hit a fsb wall on that board.

i'm sure others will ring in soon who have experience but from reading the forum, it seems this is the case.

[maxxor]

max fsb for me on P5W DH with QX6700 is 333mhz also on vappochill LS Vcore did not help

[harvshark]

max fsb for me on P5W DH with QX6700 is 333mhz also on vappochill LS Vcore did not help

So it would appear that I have this maxed out on air, and the Vapo would not get me anything, eh?
Does anybody have a way around the fsb wall, or is it a mobo thing? I am on the 1602 bios.

EDIT....I have this same mobo running fsb at 387 w/e6600, 360 w/e6700, and 376 w/x6800. Is it the quad cores keeping the fsb down?

[shimmishim]

from what i understand, it's a mobo thing.

someone needs to come up with a list of mobo which allows higher fsb's with the QX6x00 chips!

[harvshark]

Guess I'll not be Vapochilling this puppy, pending further input, glad I asked the question before I made the investment. I really do like the P5W-DH, it has done well for me on my other 3 rigs, it appears that either the quaddy doesn't like the fsb any higher, or this mobo doesn't like the quaddy as much as the dual cores.
If anybody has further input, it would be welcome.

[BobyTT]

I have simular problem i hit 320FSB with QX6700 and that's it , with my E6700 i was able to get stable 350FSB , i am geting badAxe2

[harvshark]

Anybody tried conferring with Asus on this?

[freecableguy]

The iP965 and Xeon quad-core are a deadly combination:
http://www.thetechrepository.com/showthread.php?t=60

-FCG

[Yonya]

I'm in a similar situation. I have two QX6700's on P5W-DH's , one under a Vapo, the other on a Prometia GT, and both somewhat 'under utilised'.

If ASUS get their act together and allow the multiplier to be raised properly on all cores :slapass: , then the P5W could be useful. Until then, I'd avoid this board for the QX6700.

Personally, I've got a BadAxe 2 on order to see how that fares....

Jonathan.

[fhpchris]

even raising the multi on two of the four cores should help, assuming the P5WDH works well with higher multis.

I would just buy a Badaxe 2 if I owned a QX6700, but whatever...

[harvshark]

I guess I'l have to stay tuned in for futher developments......
FCG's post above is nice, but doesn't help me get any more out of my QX6700, unless he is inferring that I can do the same with a P5B and my QX that he got with the Xeon, but I don't think that is the case.
Thanx to those who let me know my max OC at present is in line with what you have been able to achieve.
Either Asus needs to address this with a bios fix, or I guess I'll have to consider a mobo change.......pity, that.

[BobyTT]

I think ASUS is kind of slow , so i ordered BA2 and ill sell my P5W-DH, its kind of frustrating that ASUS , doesn't stay on top of the game....

[pee4]

I wonder if it comes down to the ability of the P5WDH to supply enough stable voltage to the overclocked quad core. The P5WDH only has the 4 pin connector, not an 8 pin.

[sierra_bound]

The P5B Dlx will give you the highest FSB with Kentsfield. Several members, including me, have found this out. The P5B is also the only board that has done 500FSB with Kentsfield.

[BobyTT]

Actually thats another thing that i notice , my voltage is going up and down with QX6700 and with E6700 was rockstable

[harvshark]

The P5B Dlx will give you the highest FSB with Kentsfield. Several members, including me, have found this out.

Why then, have several other in this thread reccomended the BA2?

[sierra_bound]

Why then, have several other in this thread reccomended the BA2?
Well, one of those people ordered the board, hoping it will be good. The other recommendation, I believe, comes from someone who hasn't used the board.

I'm just telling you what I know based on personal experience. If you look for eva2000's Q6600 threads, you will see that he had a FSB problem until he switched to the P5B. With the P5B, you should have no trouble doing 450+ FSB. i used the P5W DH and a few other boards with Kentsfield. They weren't even close to the P5B.

[freecableguy]

The iP965 and Xeon quad-core are a deadly combination:
http://www.thetechrepository.com/showthread.php?t=60

-FCG

I'm going to go ahead and quote myself with emphasis on the key point of my first post in this thread. ;)

The iP965 (chipset) and Xeon quad-core are a deadly combination.


-FCG

[Supertim0r]

the bad axe 2 + Q6600 = 385-390fsb max for me
it's 470+ on P5B DX

bad axe 2 + E6600 = 450fsb EASY

bios update could solve the limited fsb on BA2

[harvshark]

OK, it seems that the P5B Deluxe is the choice. I don't need the wifi version. What about the warning on Newegg about only DDR2-800 at 1.8v and 5-5-5 or 6-6-6 being supported? Will the OCZ Titanium Alpha DDR2-1000 I currently have running a 498mhz, 2.3v, 4-4-4-10 in the P5W-DH work right in the P5B?

[Yoxxy]

I think that is just for SPD data. I am running the OCZ sticks at 4-4-4-4 550 mhz 2.35v and it works great on P5B. With an early bios I needed to use some value ram sticks to get them to boot.

[Yonya]

P5B is probably the board of choice for thoise with the 6600. I'd guess, for you, the most important factor would be the ability to up the multipliers, supported by strong Vcore?

Which I suspect would change the field a bit....

[rob725]

I'm currently running a qx6700es on ss phase on evga 680. Haven't yet messed with raising fsb because I haven't seen anyone have much fsb success with quad and this mobo. The upward multi seems to work well though, as I am currently stable at 3.73 with 1.5v bios/1.45v actual and -38c load temps. Will prolly shoot for 4ghz tonight.

[jabski]

Will prolly shoot for 4ghz tonight.
Let us know how you get on. I am putting a QX6700 in my rig tomorrow. :)

[rob725]

For 4ghz, had to up volts to 1.6/1.55 to pass quad prime for more than a few seconds. Priming is generating so much heat that the phase won't hold temps and have to stop after a few minutes. I am able to make it through 3dmark 06 with dual 8800's running at stock gpu/mem with a score of 18,630. Currently crunching cancer work units on the world community grid. This pegs each core at 100%, but is not as tortuous as prime, so temps seem to be holding. Unfortunately, it takes time for the results to be validated, so I won't know 'till sometime tomorrow if it's actually stable, but it looks promising so far.

[rjw]

4.4 Ghz...qx6700 on p5b deluxe so far...

will be trying it in a p5w64ws pro soon

vapochill ls keeps up with this chip untilabout 1.55 volts, then cpu is running in the positive numbers always under load

My 700 watt ocz ps couldn't start 3dm06 with the quad, gtx 8800 stock and my other stuff. As soon as the card went into 3d. wham...it shut off.

[jabski]

Nice. Keep the updates coming. I am waiting for water cooling parts for my rig then i too will have a QX6700 running on phase :)