<NEED HELP> Gigabyte 8I955X has major FSB spiking issue!

[Sentential]

Im getting swings in excess of 20mhz of the specified speed. I seriosly need help. Is this a chipset issue? product issue? BIOS issue? I am really at a loss of words. Somone help me out :mad:

[Geforce4ti4200]

Maybe your mobo became defective? Id call them and inquire about that malfunction

[freecableguy]

Oh my God! My FSB has spiked too! Oh, nevermind, I did that. ;)

[Sentential]

Oh my God! My FSB has spiked too! Oh, nevermind, I did that. ;)
Thread crap someplace else. I seriously need help on this. :rolleyes:

[freecableguy]

OK. Serious solution: Don't buy Gigabyte Intel boards. I'm serious. Stick to either DFI, Abit or Asus...in that order.

[Sentential]

OK. Serious solution: Don't buy Gigabyte Intel boards. I'm serious. Stick to either DFI, Abit or Asus...in that order.
While I realize that the point was I need a solution OTHER than replacing the motherboard.

[freecableguy]

My guess is that there will be no other solution. Sell or RMA the board and get one from one of the companies I listed above.

[JNav89GT]

it's not just a Gigabyte problem. My abit aa8xe had this issue. It's due to poor/low fsb termination voltage. Asus has setting in bios. My Abit did not. Least not the vanilla or NON fatality board. Post in the vmod sectoin and prepare hellfire or someone to ask for 50pics of the board and various IC's

[Supertim0r]

OK. Serious solution: Don't buy Gigabyte Intel boards. I'm serious. Stick to either DFI, Abit or Asus...in that order.
+1 :p:
:YIPPIE:

[Sentential]

it's not just a Gigabyte problem. My abit aa8xe had this issue. It's due to poor/low fsb termination voltage. Asus has setting in bios. My Abit did not. Least not the vanilla or NON fatality board. Post in the vmod sectoin and prepare hellfire or someone to ask for 50pics of the board and various IC's
And thereby raising this voltage keeps it stable?

[The Stilt]

Try if the PLL chip is getting hot.
If you can´t keep you finger on it over few seconds, put a heatsink on it.

Helped me with DFI board a bit, while DDR2 was operating at DDR830+ speeds with 3-2-2-1 timings ;)

[Sentential]

Try if the PLL chip is getting hot.
If you can´t keep you finger on it over few seconds, put a heatsink on it.

Helped me with DFI board a bit, while DDR2 was operating at DDR830+ speeds with 3-2-2-1 timings ;)
Think that would help? I guess its worth a shot. Where is it located?

[The Stilt]

Think that would help? I guess its worth a shot. Where is it located?

Look under that P4 powerplug. It´s that black chip, right from those two crystals.

[Sentential]

Thanks but that didnt do it either. Still seing spikes.

[JNav89GT]

if you can raise the vtt with a board mod it will stop spikes. Only need like 0.1v or so extra

[Sentential]

if you can raise the vtt with a board mod it will stop spikes. Only need like 0.1v or so extra
Where and how?

[Sentential]

Tried stock, still no luck. Looks like I am going to be forced to scrap yet another board.

[Mesce]

hmm, this is interesting. I had this same issue with msi P4n diamond and now currently with my asus P5ND2-SLI. Although your motherboard is a 955 chipset do you think it could have anything to do with the pci express lanes? That seems to be the only thing they have in common with each other nf4 and 955

[Kunaak]

maybe you are getting the C1E thing mixed up with what you think the CPU speed should be?

[Sentential]

maybe you are getting the C1E thing mixed up with what you think the CPU speed should be?
No no no, this is FSB specific. Its random and it doesnt always decrease, more often it increases from the speed specified in BIOS

[Supertim0r]

what do you mean about "swings" ?
I don't understand the expression with my poor english ?
What's the probem with the board ?

[Crow]

he means it is jumping 20mhz fsb or more.

[Supertim0r]

the mhz are going up and down (like...with throttlewatch 4.1-4.2ghz..) ?

[Supertim0r]

the mhz are going up and down (like...with throttlewatch 4.1-4.2ghz..) ?
maybe a droop problem ?
I had this kind of issue on my P5P800 before the vdroop mod
Throttlewatch acted crazy from 2.8-4.2ghz

[Crow]

think hes saying it is just going up.

[Sentential]

No no no, what is happening is that the PLL is incorectally reading the speed. My FSB randomly chooses a number from a 20mhz spread both positive and negitive from the actual value. Example:

I choose 308. From there it will randomly change to a different number for a split second as follows:
292
321
302
304
308.8
301
307

This happens on both idle and load and even at stock :slapass:

[Donnie27]

No no no, what is happening is that the PLL is incorectally reading the speed. My FSB randomly chooses a number from a 20mhz spread both positive and negitive from the actual value. Example:

I choose 308. From there it will randomly change to a different number for a split second as follows:
292
321
302
304
308.8
301
307

This happens on both idle and load and even at stock :slapass:

You sure this isn't EIST kicking in? They all might be using that Dinamic Overclocking that MSI introduced. This increases are strange to say the least.

Donnie27

[Sentential]

You sure this isn't EIST kicking in? They all might be using that Dinamic Overclocking that MSI introduced. This increases are strange to say the least.

Donnie27
No its not EIST. I have it disabled. This is an issue with the PLL chip

[Supertim0r]

No its not EIST. I have it disabled. This is an issue with the PLL chip
hahaha
you got a P5WD2 ? :)
(you should take a look to the P5ND2-SLI Deluxe)

[Salkcin]

I had the same problem with my P4 520 + P5P800 above 250MHz FSB - when it was set above 250MHz the frequency of the FSB was "unstable", but only when the CPU was loading.

It seems like it's a VTT or FSB termination voltage problem when the FSB get's to high above stock or something, but it's a CPU related problem since people are reporting it with 865/925/955/nF4ie platforms...

[jrw]

Looks like you're never gonna get that perfect board you want sooo bad Sent.

Happier in land of Intel?

I still smile when thinking about your rage over the K8N Neo2 ;D

[IluvIntel]

I had the same problem with my P4 520 + P5P800 above 250MHz FSB - when it was set above 250MHz the frequency of the FSB was "unstable", but only when the CPU was loading.

It seems like it's a VTT or FSB termination voltage problem when the FSB get's to high above stock or something, but it's a CPU related problem since people are reporting it with 865/925/955/nF4ie platforms...

I agree totally, I got the 520 on the same MoBo and testing it with 2 x distributed computing projects and Sandra benchies @ 100% cpu load is a pain to keep it above 258Mhz FSB rock stable 24/7. PCMark04 is OK (untill 5th test then IE decides to close :( ) No amount of vcore seems to control it and I have "Enhanced CI Control" turned off in BIOS. This 520 is cooled with stock 560 HSF and 2 x 12 cm case fans.
Its winter over here now so great time to do suicide shots with O/C. :D

[ashish_mohanty]

for the record, its hapenning to me now as well :mad: - i changed my chip to a 640.......bugger :wierd:

[Sentential]

for the record, its hapenning to me now as well :mad: - i changed my chip to a 640.......bugger :wierd:
It cant be 6xx related. My 640 doesnt have this issue whatsoever, nor did my 660 on my AS8.

[Sentential]

Trying to talk with gigabyte techs to see what they have to say.... you be the judge:
http://ggts.gigabyte.com.tw/gtsemail.asp?UserEmail=hallampg@yahoo.com&EmailID=220970&EmailPreviousID=220183&OpenEmail=Y&LanguageID=1
...it aint going well

[charlie]

yeah, my 865PE LGA775 P5P800 does the same thing...

[Supertim0r]

yeah, my 865PE LGA775 P5P800 does the same thing...
too bad...mine too :(
over 4150mhz... windows won't read the right speed
ex: 4205mhz @ cpu-z = 3.84ghz @ system properties :stick:
dunno if watercooling will help ? i'll get an Iwaki pump and swiftech dual 120mm rad + 6002 block. Should it help ?

[Donnie27]

No its not EIST. I have it disabled. This is an issue with the PLL chip

Is there anything like this going on?

http://www.xbitlabs.com/forum/viewtopic.php?t=7275


Dynamic overclocking can increase and decrease your clock speeds, but 6.4ghz? Must have been a misread, thats barely atainable with liquid nitrogen.

Even 4.5 is a stretch, every motherboard dynamic overclocking option I've seen will only overclock maximum 15% or so.

I didn't look them up but there were several sites like Tom's jumping MSI and Asus for cheating with these features. It what the whole AI starts with. You guys are the pros, I was just asking a question.

Donnie27

[ingentingmendeg]

OK. Serious solution: Don't buy Gigabyte Intel boards. I'm serious. Stick to either DFI, Abit or Asus...in that order.

why not? i have a gigabyte intel board and i absolutely love it. :)

[ashish_mohanty]

im flogging the 640 on ebay and return to using my 540.........This piece of junk needs 1.5+ volts to be prime stable at 3.92 GHz - My 540 was prime stable at 1.46 volts. Bad stepping matbe? the 640 is N0 and the 540 is D0.....

[Sentential]

Welp the P5WD2 solved it. It still pings somewhat, but its far better than it was on the gigabyte. Plus my dividers work at much higher speeds

[Adasi]

Have anyone solved the problem yet? My stable oc stops at fsb 280 which is 4500mhz. At 280 everything is fine, but when i push fsb to 281 than it starts to fluctuate (+~8mhz). My cpu would do better for sure so it must be the motherboard. I have abit aa8xe.

[Entsafter]

I've the same problem @ over 291 Mhz FSB...
Fluctuate from 280 till 300 o0 that sucks hard! I tryed all vcore settings, vtt, but nothing improves the situation! Perhaps I need a new board to run 310-320 Mhz FSB!
With 19X multi I can run without any problems 4.4 Ghz (24 hour stable)...
My board: fatal1ty AA8XE

[Adasi]

Still no success in dealing with the problem? I'm gonna try to use DICE soon but i need to know that my motheboard can do more than 280fsb...

[boshuter]

I had a thread a while back with the same problem on my AA8XE, the fsb would fluctuate (always up) when the cpu was loaded. It turned out to be the version of cpuz I was running. I got the latest version (at that time) and the fsb was rock solid. I still don't like the AA8XE though, it's not even close to the P5WD2 in terms of performance.

[Adasi]

So you say that there is no "fsb fluctuaction problem on AA8XE" and it was only cpuz issue? Hmm i think it's not only cpuz problem because once something went wrong on my board (don't remember now what i did) but even on stock fsb it was fluctuating (causing system instability). I thought something was wrong with the cpu but then i turned off HT in bios and my problem dissapeard. After a month i decided to try turn on the HT again (earlier didn't have time to fight with it) and the fluctuation disappeard. Don't no how it looks now on higher fsb because i sold my phase change. I'm gonna try DICE and see what happens...
Something is definitely wrong on this board... I really want to try fsb vtt mod but i cannot find it anywhere :(

[i found nemo]

pus small heat sink on the clock generator (usually says ics on the top)

[Adasi]

I'll give a try but if I remember correctly it wasn't even warm when touched.... :|

[boshuter]

So you say that there is no "fsb fluctuaction problem on AA8XE" and it was only cpuz issue? Hmm i think it's not only cpuz problem because once something went wrong on my board (don't remember now what i did) but even on stock fsb it was fluctuating (causing system instability). I thought something was wrong with the cpu but then i turned off HT in bios and my problem dissapeard. After a month i decided to try turn on the HT again (earlier didn't have time to fight with it) and the fluctuation disappeard. Don't no how it looks now on higher fsb because i sold my phase change. I'm gonna try DICE and see what happens...
Something is definitely wrong on this board... I really want to try fsb vtt mod but i cannot find it anywhere :(

I'm not saying you don't have a problem with it on yours. All I'm saying that I thought I had the same exact problem you are describing.... I even did the "disable HT" thing and it fixed mine (if that's a fix). After posting about the problem on 3 different forums someone suggested I upgrade to a newer version of cpuz. I downloaded whatever was the newest at that point and the problem was gone. I was only running at around 285fsb, if I would leave cpuz open and run superpi I could watch the fsb fluctuate like you are talking about..... after I got the different version cpuz the fsb was rock solid. That experience did sour me on the AA8XE board though..... ;)

[fAlCoNNiAn]

i had a 875 chipset board that would spike as well, then i sinked the PLL, and everything was fine.

[OneyedK]

I'm a bit confused here...

i660/P5WD2 (257*14/ DDR2 685Mhz 3-2-2-4-2 stock aircooler)
running 2 instances of f@h...
No fluctuation visible in Throttlewatch and cpu-z...
when I startup more applications, cpu-z says fsb and corespeed are rockstable, while Throttlewatch shows somewhere between +10 and +20 Mhz on corespeed...

Is this a cpu, board or simply throttlewatch issue???
--> but I didn't notice that on P5AD2 E Premium with same cpu