Taking Slot A Athlon Classic 700 over 850 "safely"

[Namagomi]

I've got a classic slot a Athlon 700mhz, with a biggie dual fan Alpha cooler secured with Arctic Silver Dux, and a GFU. my case has excellent air cooling, and the temp dosnt get over 38C with @ 850ish. However, at 850ish, teh box resets itself after abotu 5-10 min of being on, regardless of CPU load. Perhaps a component is loose? Perhaps the voltage is too low? (~1.70v@850ish) Too high? How can I get up to a gigish? It's a week 43 CPU, so i think it uses the .18m process. What can I do to get up there? Also, perhaps since the MoBo will accept it, and the GFU works with them, it would be a good idea to upgrade to a slot a 1ghz T-bird in the future for a mesaely amount? How can I solve the reseting problem, what causes this? I have pretty good amount of o/cing know-how, but this porblem is new to me. I'm running on a Asus K7M, and I'm about to change out my RAM with 256mb of Mushkin HSDRAM i just ordered yesterseday, thanks for your help

[SickBoy]

What variety of PSU do you have? If it's a 250W box I would think that would be the cause.... I used to have problems with this on my K6-2 box and they just went away after a while.... The other thing I would try if I were you would be to up your I/O voltage a smidge and see if that helps. Just some thoughts, I may be wrong, please correct me if I am.

SickBoy

[Murphy]

Namagomi (Apr 02, 2001 10:02 a.m.):
I've got a classic slot a Athlon 700mhz, with a biggie dual fan Alpha cooler secured with Arctic Silver Dux, and a GFU. my case has excellent air cooling, and the temp dosnt get over 38C with @ 850ish. However, at 850ish, teh box resets itself after abotu 5-10 min of being on, regardless of CPU load. Perhaps a component is loose? Perhaps the voltage is too low? (~1.70v@850ish) Too high? How can I get up to a gigish? It's a week 43 CPU, so i think it uses the .18m process. What can I do to get up there? Also, perhaps since the MoBo will accept it, and the GFU works with them, it would be a good idea to upgrade to a slot a 1ghz T-bird in the future for a mesaely amount? How can I solve the reseting problem, what causes this? I have pretty good amount of o/cing know-how, but this porblem is new to me. I'm running on a Asus K7M, and I'm about to change out my RAM with 256mb of Mushkin HSDRAM i just ordered yesterseday, thanks for your help

Hi Namagomi,

your problem seems like some instability in windows. Have you tried lowering your L2 cache multiplyer? If not, this could very well be it. Get Mathlon V3.00 beta to boot up with floppy and set your L2cache by software. You can get it here (http://www.nexus.hu/plusabit/english/index.html). For K7V (that's what I use) there are some bioses around with L2 cache control. The 1008 series (all beta, for over a year, but who cares, they work perfect). Maybe something for your mobo too. Noo hassle with floppy's anymore (mathlon).

Like Sickboy said, it could be your PSU, but I wouldn't rush to the stores before your verified you've got L2 fixed. 250W is absolute minimum for overclocking, higher is recommended. I use a 300W to power my athlon 500@800 1.8V, and it can do 500@850 1.9V with cache at 2/5x. It also has a .18um core. 1.9 V seems somewhat high for me and performance increase is nominal, so I run it @800.

Extreme speeds require extreme voltages. Try 850 at 1.75V or even 1.8V. Your alpha cooler can take that easily. My rule of thumb is that temps above 50°C start eating your CPU and stability. Below 45°C not much temps effects on stability whatsoever. I haven't tried kryo-cooling, maybe it does help. I run about 30°C (core, estimated) most of the time, backside of CPU about 35°C.

Succes! Let us know when you fixed it,
Mr.Murphy

[Namagomi]

How would i go aboutr uping the I/O voltage on an ASUS K7M?
btw, i upgrade to an Antec 300w PSU just before my little o/cing adventure from the old 225w =P

[Murphy]

Namagomi (Apr 04, 2001 12:41 a.m.):
How would i go aboutr uping the I/O voltage on an ASUS K7M?
btw, i upgrade to an Antec 300w PSU just before my little o/cing adventure from the old 225w =P

About changing VIO, that can be changed with jumpers on your mobo, see your manual for where they are located, usually somewhere near the pci slots. Just a warning: don't go and play with jumpers randomly :D LOL

If L2 is the problem:I know the 1008-D beta bios for K7V has L2-control, 1007 (the last official) has not. I went to asuscom.de for the latest bioses, where I saw a identical situation. A official bios and a beta bios (released in august 2000), which I think to be mature enough to have L2-cache control. Does anybody out there have an idea/experience with this mobo/bios combo??

What I don' understand is Mathlon not working. I've seen someone on the forum with the same problem, but I haven't figured out why. Use the mathlon V3.00 beta, not the earlier versions, because the early ones didn't work for me too. The floppy made by V3.00 set's your L2-cache at the moment your computer starts booting (=starting your OS, windows?). So before windows starts you should hear the computer search for the floppy (it is a bootable floppy, your bios tells PC that it has to look for floppy first, than for HD, maybe that's the problem?). But still the computer must be able to POST at the high speed. To make this possible, be SURE to disable L2 cache in the bios!!! Mathlon is build to reactivate it when booting. You can check your results with h'oda's WCPUID, this one will never lie. You say mathlon doesn't seem to work, could you explain that to me, or how you verify that?

Only problem I have with mathlon is, that AFTER configuring the l2-cache, it says no system disk, remove floppy. Yet it still configures your ram, computer will continue to boot.

Greetings, Murphy