Q9550 Overclocking problem, FSB wall?

[R4DK0]

Since, I cannot post in Overclocking section, I posted it here (someone from staff can check it out, if necessery)

Specs
Asus P5K-E Wifi/AP P35 chipset
Intel Q9550 E0
2x2Gb Supertalent 800Mhz

My question is, is there a FSB wall on P35 chipset, so I can overclock it only to 3.9Ghz , and get to the OS, or could it be a CPU fault?
Ive overclocked the RAM too, so that shouldnt be an issue.
--

Ive just bought this on 775 socket, because Ive just bought this motherboard, and I still have DDR2 rams, I know I could get i7 for a little more money, but the RAM prices are a little too high.

Ive also have Mugen 2 with 2x12cm fans for in and in the case 12cm and 20cm one, temps with 3.9Ghz and Prime95 doesnt go over 60°C.

Ive readed that setting the NB voltage higher, might solve that, but im a little sceptic, that I will burn the motherboard.

Any suggestions what should I do?

[Jor3lBR]

Yes there is a wall on those boards and quad cores: asus, dfi, msi, biostar etc. To get quads running smooth over 4500Mhz stable you will need a Gigabyte EP45-UD3P.

[R4DK0]

So buying EP45-UD3P will solve the problem?
Is there any hard proof, running it that overclocked, that it is shortening lifespan of the CPU?
Cause im running few virtual machines that is quite CPU intensive, and any Mhz more its better than stock.

[Jor3lBR]

So buying EP45-UD3P will solve the problem?
Is there any hard proof, running it that overclocked, that it is shortening lifespan of the CPU?
Cause im running few virtual machines that is quite CPU intensive, and any Mhz more its better than stock.

This is xtremesystems nobody will run these cpus in stock speeds. I've been running my Q9650 for over a year now on 4600-4700Mhz with 1.4 - 1.5 vcore and it runs better today then 1 year ago.

The best proven OCing board for quad cores is the Ep45-ud3p, ask anyone. Browse aroung thru the threads here and you will see.

[R4DK0]

Thank you very much for the quick replys. Now I feel like a dumbass that I didnt bought that motherboard before, cause back then I had Core 2 Duo and I didnt feel the need for a better motherboard. But even so, ill probably stick with 3.9Ghz, cause its only air, and I guess you are using water? And I dont like temps over 70°C or higher with that much of a overclock.
Thank you again, Jor3lBR.

[OC Nub]

The best proven OCing board for quad cores is the Ep45-ud3p, ask anyone.

+1
best choice for 775S 45nm quad.