AYHJA '9' good OC?

[ka]

I'm trying to mate a AYHJA '9' Athlon 1ghz to a KT7a, and I can't seem to be able to get it stable above 1133Mhz, It can POST in excess of 1600 Mhz, and it'll even work in Windows for an hour at 1466MHZ (133x11) BUT my problem has always been freezes/lock ups. This is all with Voltage Increases applied (What exactly does the I/O voltage affect? I understand about the core voltage but I/O?)

So - what usually causes these freezes? Is it the memory (Micron) or my Motherboard or the PSU (Enermax 350w - I doubt this causes lock ups because I used to get them with my 1.1 Athlon at stock speed)
Or could a particular bios setting work the magic? I have a ZT bios and I've tried running the chip with various memory settings but so far no success.
Should I return this chip and try to get hold of a AYHJA,AYHJAR 'Y' or 'K'?
These are better overclockers right?. I did hear that these need far less voltage to run stable or even no voltage increase at all- or is this just a myth and to get above 1.4 you always need a voltage increase?
Less voltage would be welcome for me as less Voltage = less Heat= More Overclock

Thanks
KA

[minoukat]

your OC of 1433 is very good ! And yes, the "Y" are usually better OCers than 9s, they OC higher and require usually less voltage to get these higher speeds. What voltage are you using right now ?

[]-[itman]

What are your temps like?

[Sonny]

You will need the 3R BIOS (ftp://ftp.abit.com.tw/pub/bios/kt7/kt73r.exe) or the 4A BIOS (ftp://ftp.abit.com.tw/pub/bios/kt7/kt74a.exe) for the initial version of your MoBo but starting with ver. 1.3 you will need the 3C BIOS (ftp://ftp.abit.com.tw/pub/bios/kt7s/kt7s3n.exe). Make sure what version of the KT7A-RAID you have before you flash it. The manual has a ok tutorial on it but always be careful when you flash. You can find all the different BIOS FILES here (http://www.abit.com.tw/eng/download/bios/bios-kt7a-raid.htm) from ABIT's FTP site. I would also suggest asking Paul (http://www.viahardware.com/faq/kt7/kt7faq.htm), more like reading, for more info regarding your MoBo.

I think the 3R is the best BIOS.

EDIT: The links directly to the bios files don't seem to work but the link to the FTP site does.

[ka]

My stress temps are 55C at 1466Mhz (Prime 95 Torture), I ran this for about half an hour and after I was doing something else it froze on me again.Bit strange it froze at a lower temp.

Thanks for the BIOS info - I checked the BIOS page and it says 3R improves stability with 266FSB Athlons. Great! I'll be updating as soon as I get the chance.

Thank you all!

[mEKbOY]

the "9" code isnt that great. The "y" is better.

[]-[itman]

Ok i don't think the temps are your problem but if i were you i'd work on bringing them down. Those are just too high for my liking.

[Sonny]

Originally posted by ka
My stress temps are 55C at 1466Mhz (Prime 95 Torture), I ran this for about half an hour and after I was doing something else it froze on me again.Bit strange it froze at a lower temp.

Thanks for the BIOS info - I checked the BIOS page and it says 3R improves stability with 266FSB Athlons. Great! I'll be updating as soon as I get the chance.

Thank you all! Just make sure you use the right one for the version of your MoBo. Good luck;)