Asrock 775DUAL-VSTA overclocking experience?
 

I bought a very cheapo motherboard for my new S775 HSF test setupn this Asrock 775DUAL-VSTA board was/is only €54 at http://www.alternate.de/html/product...wTechData=true

Now I've had some success in getting the accompanying P4 3.06Ghz to overclock over default settings, up to 3682Mhz to be exact, at stock voltage



the asrock mobo doesn't allow for voltage cpu control, ddr voltage can be set to normal/high without any values defined in the bios; that's about all the tweaking you get, voltage wise. The FSB can be set beyond realistic values, but it seems the VIA PT880 Pro might be the OC limiting culprit, can this be?

When I push the FSB speed over 160mhz the system will stall, slow down, and blue screen, quite weird. It happened quite random, and then it started happening at below 160Mhz FSB also... I removed the stock aluminum NB heatsink and replaced the standard goo with Arctic Goop, and so far that has proven successful for several days of stress testing now. Could the VIA PT880 Pro chipset be this sensitive to temperatures & cooling?

Found this info at XS/VR-Zone

Cpu:pci-e async
Pci-e 117mhz
spread spectrum - Disabled
V-link - normal

and some voltmods http://forums.vr-zone.com/showthread.php?t=93127

shall I mod it for you ?

thanks for the offer:) I already started testing with plenty of HSF and at 3.6ghz it's running sufficiently hot. Don't want to start from scratch again.

Sis 649 chipset with LGA 775 support goes well beyond 200MHz fsb :^D

Is there a RAM devider? And are there auto strap settings programmed in that chipset? For example, when you are on 166MHz and you ingrease your FSB to 167MHz, do you see anything happening? RAM MHz fall back or stuff like that?

yes there is a ram divider, but ram aint the problem, runs up to 270mhz CL 2.5 3-3-7 with 2.7v

Check if you can set a +170MHz FSB. The cpu might have hit the limit as well. My Celeron 2,56GHz overclocked very similair to your Prescott on stock voltage.

CPU hits the limit at that FSB, my CPU has 23x multiplier...

max OC to windows boot-able with stock volts/cooling:

Nice job considering that kind of board! Perfect weather/CPU combo for smores and grilled hot dogs, no? :)

with Core 2 this board will get pretty high FSB, over 250, up to 300 with modifications, looks sweet :)

Oh it is! I'd even ordered one of these before the Gigabyte DS3, but it didn't survive UPS... :no: I hear they can do 300FSB for C2Ds without any mods needed, but that's the brick ceiling. Definitely not bad at that price, since nVidia's 5xx chipset was 320FSB on a good day... :D

fsb up to 250 ?

Wtf, the default fsb is 266 Mhz :)

FSB on my Pentium D is 133Mhz x 4 = 533Mhz

from the threads I've read at XS with Core 2 you can make this board go quiet high yes, over 300 for sure