Need advice for VP6 w/ dual PIII 667. Where should I start?

[Mr. Grinch]

I really don't have any experience with OC (duh). I have a few days to trade in the compenents that I bought if you can suggest something else. I do want dual CPU. As of right now I have only forced air cooling with Thermaltake orbs and several addtional case fans. I would like to start out slow with what I can get with forced air cooling. Please suggest some steps to take.
Thanks,
Bruce

 

[Tim-]

Those 667's are going to be tough to push very far. With such a low multiplier you will be running extreme FSB's to get even a small increase in speed. Although the VP6's I have are very stable boards, pushing extreme FSB's is a good way to make them unstable. I have two VP6's running 700's @ 1GHz but that's only 143 FSB. At 160 FSB you will only get to 800- if your ram and peripherals are cooperative.

If you can change the processors, that would be the first step! 700's would be the first choice, and maybe 800's but most others are going to be trouble. You may also find the orbs to be marginal for any serious overclocking, and a 300W or bigger power supply is recommended for dual machines since they are real current hogs.

Do you really have applications that will benefit from dual cpus? 99% of the software out there will not show much improvement. The applications that are threaded to use both processors are few and far between, to say nothing of the fact that they are top dollar. The average gain for regular software is only 5-10% and many times it's not overly impressive.

Also NT/2000 will be required for SMP to work. (or Linux or Beos or something more exotic). You are at the beginning of a complex journey, and I hope it will be fruitful for you.

 

[phantom punisher]

thats the same board i have. i new at this too but the options in the bios on these things can tame even the wildest cpu. some tips i could offer is to the i think fourth page in the bios and set all four to memory settings to turbo(defalt i think says "8 ns delay" directly under that look for a setting to set the memory to "4 way" witch is some new thing sopported by our chipset. also under that is the cas setting its called something else but i give you the option of setting it to two and that what you want. all of these settings are asumming your memory can take it . then get your self the program called vp6 fsb. you can find it in tims posts. tim has a vp6 as well so watcch him like a hawk. oh ya, first of the name of the game is burn in. you can use seti or one of the other ones. do that for a week and then your luck will be much greater. have fun dont get frusterated

 

[phantom punisher]

speak of the devil, there tim is now. he snuck up while i was writeing my responce. dont foget to search his old posts for goodies. have fun

 

[dimmreaper]

Tim- (Mar 05, 2001 06:04 p.m.):
If you can change the processors, that would be the first step! 700's would be the first choice, and maybe 800's but most others are going to be trouble.

To add to what Tim has said basically stick to the following chips:
500E (these things rock, I have one running at 750 @ defaul voltage as I type this)
550E (these rock too)
600E (this is were you start to see sensible FSBs)
650E (an all around good chips, gives a good compromise between speed and memory bandwidth)
700E (the Best of the best)
750E (use only the best air-cooling for these bad devils)
800E (this is really streaching it for air-cooling, best suited for liquid peltier action)

 

[DocClock aka MadClocker]

It might be more expencive, but you could get a couple of 700E's from PCNUT...they have pretested cpu's garanteed to do 933mhz +
you could also take your chances on a couple from a clearance house listed on pricewatch.com....in my opinion the 700 has the perfect multiplier..if you can reach 144fsb, then it will be easy to get a gig.
Those 667's run on a 133mhz bus, so you will need extreme bus speeds to see anything close to a gig, and I fear you will never see it with 667's
Even if you just get retail boxed...you will have better luck with a 700...also if you are going to keep those gorbs, then you should consider lapping them..it won't make a super diff, but every little bit helps.

 

[phantom punisher]

i just read all the stuff on chips. on the vp6 you can pimp out a 800 easily at 1 gig and . you need a memory capable of running in the 150s fsb. hears how it goes:
set the fsb to 124 to get the 1/4 divider
set the extra fsb to 1 for 128* 8=1000
the the memory clk to hostclk pluse pciclk
with that you get 1 gig, a conservitive 31 pcifsb and your memory cranking along at 156 fsb. with the 700 you cant get the memory part i dont belive becase it would make it too high.
this is how im running it but i may be confused because ive never heard anyone paise this combonation and i would think that people would be since it takes advantage of the memory at the same time it gives a low pci clk. have fun