overclocking newbie: pci + agp bus?

pepsi_max2k · 06-28-2006, 08:41 AM

Hey there, I'm planning on overclocking my 2500+ and want to know if I need to worry about the pci + agp bus speeds. I'll be going up from 166 fsb setting to 200 and leaving the multiplier at 11. Following this guide it says nothing about the pci / agp buses so I don't think I need to worry about them much, just wondered as I've never done it before and read some stuff about them changing as the fsb changes.

h20-ski · 06-28-2006, 09:02 AM

Most boards around that time had built in PCI/AGP locks so that you do not have to worry about it.

pepsi_max2k · 07-25-2006, 03:26 AM

well i got up to 200 * 11 (2.2ghz, 3200+) and it appeared stable, but... yesterday, while transcoding a video in linux on the command line it gave a segmentation fault error and also stopped recording something through my tv card (along with various errors while using the tv program + the web interface running on apache). trying to view videos in a media player just crashed the player. A restart solved it for a short while but as soon as i started to transcode the video again it seg faulted straight away, then everything started crashing, eventually it just went to a black screen and i had to hard reset. Booted to windows and I got as far as the main windows boot screen (wizzy blue/green bar) then it bsod'd me.

Other than the seg fault while transcoding, none of it's happened before.

This is probably obvious to you lot but, that's what you mean by stability problems when overcocking, yeah? I imagined a few ctd's every now and then when running intensive stuff, or an all out refusal to boot at certain speeds, but not the whole thing to work then suddenly decide not to

I've gone right back to 2500+ now just incase, next time i'll give it a little more than a day or two and a 1 hour prime95 test to check stability

h20-ski · 07-25-2006, 12:06 PM

Did you raise the VCore? If not then that might have been why the system was unstable.

pepsi_max2k · 07-25-2006, 12:10 PM

it's already up to 1.71, motherboard defaults to that for whatever reason.

*Bofinn* · 07-25-2006, 12:11 PM

also run a few passes with Memtest86 before booting up the OS.

pepsi_max2k · 07-31-2006, 01:31 PM

well this is quickly turning into a tech support thread...

went back to 2500+ speeds, windows constantly bsod'ing afte ra few seconds on desktop, or even restarting during boot, linux crashed various daemons and programs, and now crashes as soon as it boots.

it ran memtest, all fine, well 1 stick gave errors but always has + has been removed until i can prove it's not at fault.

booted a live cd, booted but wouldn't load graphical desktop or login screen, so the hd's are fine.

i'm about to swap out the cpu and hoping that's it. anyone got a spare 2500+ for sale?

and i'd give more details but, go figure, internet's down too so im on payg dialup. woohoo.

help

and don't anyone say it's the mobo

FearFactory · 07-31-2006, 01:42 PM

You must lock AGP/PCI to 66/33

06-28-2006, 08:41 AM	#1
pepsi_max2k Registered User Join Date: Feb 2004 Posts: 103	overclocking newbie: pci + agp bus? Hey there, I'm planning on overclocking my 2500+ and want to know if I need to worry about the pci + agp bus speeds. I'll be going up from 166 fsb setting to 200 and leaving the multiplier at 11. Following this guide it says nothing about the pci / agp buses so I don't think I need to worry about them much, just wondered as I've never done it before and read some stuff about them changing as the fsb changes.
(Offline)

06-28-2006, 09:02 AM	#2
h20-ski Forget Wakeboarding Join Date: May 2004 Location: Texas Posts: 2,460	Most boards around that time had built in PCI/AGP locks so that you do not have to worry about it. __________________
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07-25-2006, 03:26 AM	#3
pepsi_max2k Registered User Join Date: Feb 2004 Posts: 103	well i got up to 200 * 11 (2.2ghz, 3200+) and it appeared stable, but... yesterday, while transcoding a video in linux on the command line it gave a segmentation fault error and also stopped recording something through my tv card (along with various errors while using the tv program + the web interface running on apache). trying to view videos in a media player just crashed the player. A restart solved it for a short while but as soon as i started to transcode the video again it seg faulted straight away, then everything started crashing, eventually it just went to a black screen and i had to hard reset. Booted to windows and I got as far as the main windows boot screen (wizzy blue/green bar) then it bsod'd me. Other than the seg fault while transcoding, none of it's happened before. This is probably obvious to you lot but, that's what you mean by stability problems when overcocking, yeah? I imagined a few ctd's every now and then when running intensive stuff, or an all out refusal to boot at certain speeds, but not the whole thing to work then suddenly decide not to I've gone right back to 2500+ now just incase, next time i'll give it a little more than a day or two and a 1 hour prime95 test to check stability
(Offline)

07-25-2006, 12:06 PM	#4
h20-ski Forget Wakeboarding Join Date: May 2004 Location: Texas Posts: 2,460	Did you raise the VCore? If not then that might have been why the system was unstable. __________________
(Offline)

07-25-2006, 12:10 PM	#5
pepsi_max2k Registered User Join Date: Feb 2004 Posts: 103	it's already up to 1.71, motherboard defaults to that for whatever reason.
(Offline)

07-25-2006, 12:11 PM	#6
Bofinn I'm gettin' dizzy! Join Date: Jan 2004 Location: Chicagoland Posts: 11,035	also run a few passes with Memtest86 before booting up the OS. __________________ ---------- JimBo ----------- When in doubt, smack it!
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07-31-2006, 01:31 PM	#7
pepsi_max2k Registered User Join Date: Feb 2004 Posts: 103	well this is quickly turning into a tech support thread... went back to 2500+ speeds, windows constantly bsod'ing afte ra few seconds on desktop, or even restarting during boot, linux crashed various daemons and programs, and now crashes as soon as it boots. it ran memtest, all fine, well 1 stick gave errors but always has + has been removed until i can prove it's not at fault. booted a live cd, booted but wouldn't load graphical desktop or login screen, so the hd's are fine. i'm about to swap out the cpu and hoping that's it. anyone got a spare 2500+ for sale? and i'd give more details but, go figure, internet's down too so im on payg dialup. woohoo. help and don't anyone say it's the mobo
(Offline)

07-31-2006, 01:42 PM	#8
FearFactory The FC.Porto dragon! Join Date: Apr 2003 Location: Portugal Posts: 3,931	You must lock AGP/PCI to 66/33 __________________ P4 3.0E@3.4, Zalman CNPS7000B-Alcu, Asus P4C800-E Deluxe, 2x 512MB DDR500 Twinmos Twister, Gigabyte Geforce 6800 128MB (OC 16x6vp 385/900), NEC 2500a 8x DVD+RW/-RW (flashed to dual layer 2510a), Liteon DVD-ROM 16X, Samsung 500GB SATA, Seagate 200GB SATA (lLinux), SB Live 1024 Player, USRobotics ADSL2+ router, PSU LC Power Ozeanos 650W, Samsung 17' 795MB Flat
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