"2x=6x" trick?

[Guest]

Hi, everyone. I have a AMD k6-2 500mhz cpu running on FIC VA-503a MB(with VIA Apollo chipset). After 2years of bad experience with VIA, I am planing to change my MB to a one with intel chipset. I've heard AMD K6 cpu can run on MB with intel chipset with a "2x = 6x" trick. Does any one know how what it is? And do you recommand some certain brand and tpye of MB for super stability with this trick on win2k.

 

[zPacKRat]

you want to run your k6 on an intel chipset? well your goint to have a real hard time finding one that will run your cpu at 100 mhz and also that includes support for agp!
And what is wrong with the via chipsets? just make sure your running the most current 4 in 1 drivers from via.
I have a k6 3+ 450 at 500 on a fic2013 which has the mvp3 chipset and it runs quite well, as a matter of fact i had a k6 2 300 running 350 mhz and the combo was always super stable.
and the 2x multiplier is to get it to run at 600 mhz and does work due the the multiplier maping in the cpu itself, that is if your chip can handle it. also explain your "bad experience"

zPacKRat

 

[Crashman]

Simple, the FX and HX chipsets are among the most stable and common. The Asus P55T2P4 is choice, but almost any board that supplies dual voltage will work. Set the core voltage to 2.2v if possible, but 2.8v is the highest alternative I can recommend (that would be the stock "P55C" voltage for Pentium MMX processors). I have used the 2.8v setting before and it has proven reliable, but I always use a large cooler just to be safe. And all you do is set the motherboard to 2x66 (133) and the processor runs at 400. BIOS will still read 133, you need software such as wcpuid to verify the speed. Also, some older boards allow a 75 or 83MHz bus speed, which would give you 450 and 500MHz, respectively.

Suicide is painless...........

 

[Crashman]

Post deleted by Crashman

 

[Guest]

Thanks for your replies, apackrat and Crashman. I found Asus P55T2P4 doesn't support AGP, which means I wouldn't be able to use my ATI expert2000 video card and watch DVD with it. Do you know any MB support AGP? Thanks a lot.

The following is my experience with VIA:
My system became very unstable after I upgrade from win98se to win2kpro. I got blue screen every half hour. The error code is (0x0000001a (0x00041284, 0x780ea000, 0x0000058d), 0xc0502000), which is interpreted as IRQ conflict(bad driver?)

Here are the things I have tried:
1. I update all my drivers and flash my bios to the newest one from FIC website.
2. I update all my software patches and service packs, including the hot fixes from win2k SP2 and newest VIA 4in1.
3. I tried all of the tricks I have heard/read:
- switch the PCI slots
- try difference BIOS settings
- leave my box open
- switch the position of ram chips
.....
4. I changed most of my hardware except motherboard:
no-name internal modem -> external modem blaster
SB 16 ISA -> SB 16 PCI
AMD K6-2 350 -> AMD K6-2 500
ATI expert98 -> ATI expert 2000
old fujitsu HD -> IBM DeskStar 45GB HD with 7600rpm
.....
still no luck until I changed my Toshiba PC-100 ram to crucial PC-133 cas-2 ram (@100). My system got a little better. I am getting a blue screen once in a few days.
From my system info, I don't even have a conflict/shared IRQ. But I still get a same type of memory dump.(IRQ conflict) By the way, I also tried a Win2k copy from my friend to make sure it's not because of my win2k CD.
So the problem is got to be somewhere on my motherboard. After reading a lot of posts on the forum, I realized I am not the only one has this kind of problems with VIA chipset.

 

[zPacKRat]

Well if your gonna step and get new mobo, you might as well get a new cpu. asus mobo + duron = inexpensive!
PacKRat

 

[Crashman]

Try changing PNP OS to NO (or the equivelent setting to force cards to be configured by BIOS instead of the OS). Seriously, it works a lot of the time for curing that problem. VIA has a problem with Windows misconfiguring IRQ allocation.

Suicide is painless...........

 

[Guest]

Thanks again for your replies. My bois setting on PNP OS is NO by default.(i tried YES too) By the way, no more AMD/VIA for me. no offense to AMD lovers though.

 

[Guest]

VERY IMPORTANT!! Only the "Mobile" version of the K6-2 which has the "+" (plus) designation supports the multiplier 2 = 6 "feature. You can find this information in the spec sheet for the K6-2 on AMD's web site.

 

[Crashman]

LIES! I have used the 2x=6x trick on even the lowley K6-2 380 desktop chip! WCPUID says 400! And you should see how fast it plays games compared to the previous 166MMx processor! I usually put these in boards that are only made to support the Intel Pentium/Pentium MMX at 2.8v core, and even with the extra core voltage the work great! I always use an oversized cooler to do this, of course, but I do warrantee them! I have had no returns!

Suicide is painless...........

 

[Crashman]

I don't use anything with a VIA chipset any longer for just that reason. When I built my current unit 6 months ago, all that was available for the Athlon derivatives was VIA and the early (sucky) AMD chipset. So I built a PIII on a CUSL2. Never a problem again!
I don't think there are any Socket 7 Intel chipsets with AGP. If you need AGP, you might want to try ALi. My experience with ALi is that the performance is somewhat lower, but the stability/compatability has been very high. If you want the WORST of both worlds, get SIS!

Suicide is painless...........

 

[Guest]

I have read some posts claim ata-100 does not function properly in win2k, which happens to be featured in Asus cusl2 MB. Is that going to cause a win2k stability problem if I choose Asus cusl2 + pIII?

 

[Crashman]

I heard something about one of Intel's Win2k ATA100 drivers being bad. You could always use Microsoft's default drivers, or download a different version of Inte's drivers, if you had problems. Since I don't have any experience with Win2k on mine, I suggest you ask the guys in the www.cusl2.com forum.

Suicide is painless...........

 

[Guest]

Thanks very much for your help, Crashman.
I got a CUSL2-C + PIII750 combo from LA ComputerFair today. Please congratulate me since I finally get rid of VIA😉
But I haven't test it yet since I forget to get a PS-2 keyboard.

 

[Crashman]

Congratulations. You can TRY to get it to 1000 by setting it at 133MHz FSB, but it might not go (about 50% chance). You will need GOOD cooling to do it and 1.85-1.95v!

Suicide is painless...........

 

[Guest]

HMM... WIN2K problems usually don't have to do with problems IF you installed it correctly. You should have formatted your drive and reinstalled WIN2K like it was the first O/S you were installing on your computer.

I made this mistake of installing it along with WIN98 and it gave me similar errors to yours. It kept giving me hard drive conflict errors and also errors in WIN98 (it also could have been because I didn't partition my drive). Well, I reinstalled WIN98 blaming WIN2K for it... heh.

Make sure you install WIN2K correctly and it shouldn't have trouble. If it does, then you should try to download the latest drivers for WIN2K. If that still doesn't work, you're hardware is not fully compliant with WIN2K.