Asus P5K-E FSB ceiling reached?

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fepple

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Nov 5, 2007
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Hello,

My Asus P5K-E wont go above a FSB of 370Mhz.

Maxing out the NorthBridge voltage (1.7v) and/or the FSB Terminator (1.5v) doesnt make any difference.
Increasing the Vcore voltage from 1.38-1.5 makes no difference.
Trying different RAM speeds below their current limit (<1066).
Fiddling with lots of other settings but got no where.

I am pretty sure its the Mobo that has the problem, as if I drop the multiplier from x9 to x8 then I still get problems above 370Mhz.

Is there something I am missing? I've read lots of reports of people getting over 400Mhz on the P5K-E 🙁

Thanks a lot
Matt


I have:
Asus P5K-e Mobo, Bios 0502
Q6600 G0 Stepping
2Gb, 1066Mhz OCZ RAM
8800GT
750w Thermaltek PSU
 
The highest stable I can get is actually 370 FSB. 371+ will cause it to reboot whilst loading into windows.

With the PCIe locked at 100 this will still happen. Though at 370 I can run the PCIe upto 117 and it will still be stable.
 



Manually set timings to 5-5-5-18 and disable DRAM Static Read Booster.

Disable Transaction Booster.. I'll look when I get home, I have one I just can't remember all the settings while I'm at work.
 
No joy with that the timings. I even tried the awful 6-6-6-21 but that was no better.

Have tried Transaction Booster as well, no joy.

I'm begining to think I've got a dodgy motherboard... 🙁 I've gotta make a new PC for a friend this week so he might be getting a slightly second hand P5K-E and I'll try a new one :)


If you can give me some more setting that would be great!
 
cnumartyr, can you post the bios setting how you got 3.6Ghz on G0 Q6600?

I have same cpu model and p5K-E wifi AP mobo.

mine post at 3.7Ghz but quick BSOD at the beginning of bootscreen of windows.

I have default BIOS 806(heard 602 is best ) that come with the mobo.
Please help thanks
 
0602 is the best for OCing.

As far as BIOS settings..

1.3 FSB Termination
Transaction Booster Enabled Level 2
DRAM Static Read Control Disabled
Auto CPU PLL
Auto CPU/NB Refs
1.05v SB
1.4v NB
1.4325 vCore

That's about it.
 


Nah it's a Benchmark OC and is no more than 15 minutes Small FFT and 20 minutes Blend stable.

The 3.6 is 8 hours Small FFT and 12 Hours Blend Stable.
 
i tried your setting and i still wont work. i do get BSOD saying '.....uncorrectable hardware problem" something like that.

I up my vcore in bios to 1.6v T.T to get rid of the BSOD

another problem is that i am using a evga 8800gts 640MB and this card is getting very hot without playing any games. typically before i could put my fingers on the gpu core opposite side of the heatsink as long as i can without removing my fingers. but now i cant keep my fingers on that same area for 5 seconds. it get pretty hot. my fingers arent sensitive so i mean it get really hot.

pcie is 100mhz in bios. what is causing this rise in temp with P5K-e wifi mobo?

I installed the chipset drivers and everything for the motherboard from the cd that come with the retail box. I don't know if i should download it from the manufacture website. could this be a problem too?
 
what is the voltage are you setting in your bios? and what does it show in windows cpu-z program?


for me, 1.586v in bios and cpu-z show 1.472v are these high?

here is my speedfan report when running Blend Prime95 test

Core 0: 50C+
Core 1: 47C+
Core 2: 40C+
Core 3: 44C+
System: 49C+
CPU: 68C~74C (is this bad?)

i am using the thermaltake 120 ultra extreme heatsink. but i noticed when i take heatsink off, there is a area on the cpu surface is not contacted with the heatsink. i would say that the cpu surface is a bit concave, i say this because when i was using stockheatsink i see same spot not contacted with heatsink and i see same with the new heatsink.

the area on the cpu thats not contacted with the heatsink shows a dry area with dark burned thermal grease. it doesn't smell, but maybe those that had this surface problem would probably know what it looks like.

i read about lapping a cpu but i am afraid to do it. what should i do?
 
I thought I'd best update this as its the top google result for "P5K-E FSB" now :)

I upgraded my BIOS to 0903 and I could then get past the 370 FSB I was previously stuck at.

However, then on 0903 I realised that I was getting a significant vDrop, as I mentioned in this thread:
http://www.tomshardware.co.uk/forum/245681-11-vdrop-trust-bios-windows

I doubt the vDrop was my problem on 0502, as if I dropped the multiplier to x8 I could still not get above 370.


So for me upgrading to 0903 fixed the vDrop problem. I did downgrade to 0602 last night but I still had a vDrop so I just went back up to 0903 to get the extra stuff in that. I didnt try getting past 370 FSB on 0602 so I'm not sure if that would have worked (I forgot about this problem at the time).


Is there any reason to use 0602 other than the lack of vDrop (that everyone other than me seems to get)?
 
Intresting thing with my vDrop. With the 0903 BIOS, I was pushing it a bit for some benchmarking.

So I set the vCore to 1.61v in the BIOS, which with my normal vDrop should have set it to 1.50v. Instead this set it to 1.59v!

I tried 1.62v and that took the BIOS reading to 1.61v!

Hmm more investigation is needed. I'm not happy having a 0.1v gap in my settings.
 
LOL, my p5k e does the same thing at the same voltages. Sometimes its really close, others its wayyyy of. I have my Vcore set to a Bios of 1.3000, but in windows under all the known apps, I get 1.19, 1.18 under load. With the other bios, at the same settings, was vdrooped to 1.25, and idles at 1.24. Thats very close compaired with what I have it at now. Lets see..

Just upped it to 1.4 in bios, the bios cpu voltage detector says its 1.27. Lets see if I can get into windows. In windows its HWmonitored at 1.29, Under load at 1.28. on the blend test. 1.280 on CPUz under load with blend test via prime 95. Got me, last time my comp wouldnt boot at a vcore of 1.4000. Hehe. Got meeeeee! (904 bios.) Supposedly its a 1.2625 VID processor. (g0 q6600)

--Lupi!
 
Well, upped the vcore a lil bit, upped the NB to 1.4, turned off all the usual junk in the Bios. Stuck with the x 9 and upped the FSB to 1600. Happily doing small FTTs in Prime 95 on all four cores. Bah, failed pretty quickly when I Lowered the VCore. Back up a lil bit. Thats the first time I have efer seen it fail the small FTTs, hehe, usually its my Lame A$$ ram trashing stuff!
 
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