Can't OC my 2.8 past 2.9 HELP!!!

[DivineWrath]

Just built my first system:

P4 2.8
Gigabyte 8IHXP v3.0
512MB Samsung PC1066
ATI A-I-W 8500 128MB

I can overclock my system to 156, but anything above 142 knocks out my on-board sound.

Does anybody have any suggestions? (Besides buying a sound card...)

 

[krag]

Its your mobo & ram bro. Gigabyte isn't known for high fsb and the RDram is pretty shakey on FSB too. I would think it would be your mobo before your ram though. Yes there have been a lucky few who have gotten thier Gygabytes to oc well...but it doesn't look like your gonna be one of them.

 

[chop]

Is it stable @156 without the audio? If so, that would rule out the issues with Rdram.

 

[AZN]

Its your mobo & ram bro. Gigabyte isn't known for high fsb and the RDram is pretty shakey on FSB too. I would think it would be your mobo before your ram though. Yes there have been a lucky few who have gotten thier Gygabytes to oc well...but it doesn't look like your gonna be one of them.

do u know that rd is flakey at high fsb??? where do u get your info from?
@ 4x yes RD will flake out at about 145FSB but at 3x i bet the chip will flake out before the RD...

if u can lock ur agp and pci bus do so, then turn ur mem to auto or 3x and u should be good... from there u can start upping the FSB and core voltage as necessary.

AZN

 

[DivineWrath]

I'm completely stable at 156- but without the on-board audio. My RDRAM is at x4.
With this mobo, I cannot lock the AGP/PCI.
It doesn't seem to be a ram issue.

 

[nodsetse]

With this mobo, I cannot lock the AGP/PCI.

That could be the problem, as I've seen lots of issues once the PCI bus gets close to 40MHz. Though some people are able to run higher, I always wind up with HDD problems when trying to run the PCI bus that high. Solution might be a different mobo, or possibly an HDD that doesn't mind the higher speeds.

 

[Lt. Max]

try puttin ur fsb to 166 mab the 1/5 divider kicks in and everythign goes back in spec

 

[AZN]

try puttin ur fsb to 166 mab the 1/5 divider kicks in and everythign goes back in spec

arnt dividers only on DDR boards???

AZN

 

[DivineWrath]

The FSB tops off at 156. Can't go any higher.

 

[Lt. Max]

fsb tops out 156? darn.. ur kinda screwed on that then.. well does ur board have pci/agp lock? i think someone asked earleir already.
also try disabling ur onboard audio and get a sound card then 156 should b fine

 

[pacino]

short answer, your board

 

[Argghhh...SPLAT]

Just built my first system:

P4 2.8
Gigabyte 8IHXP v3.0
512MB Samsung PC1066
ATI A-I-W 8500 128MB

I can overclock my system to 156, but anything above 142 knocks out my on-board sound.

Does anybody have any suggestions? (Besides buying a sound card...)

Buy a sound card. Seriously, I have the same motherboard, and it does the same thing above 150MHz FSB-- the Realtek sound chip craps out. I put in a cheap SB 512 and it will do 152Mhz FSb (2.89GHz) no problem. The Samsung RDRAM is a monster--I think I could hit PC1333 speeds if the FSB and CPU went that far.

 

[Doofie27cp2]

hey my pc800 rdram was at 1080mhz at only 133FSB. I increased my fsb to max just to see what would happen, and aparently my intel pentium 4 2.0 ghz processer can go to 3.8 and my memory speed goes well over 2 ghz. I have no doubt that i could not get it past 2.8, as at 2.6 it was kinda shakey, but i decided to underclock it down to 2.26 and it has become more unstable than before. Any one help me, i got an aopen board