[Tigerabbit]

PowerMac 8100/100.

Currently it's doing about 1.6% per hour (~62.5 hr/WU). I'm getting a 256K cache simm for it tomorrow, and that should crank it up some more, though I don't expect the almost-doubled performance I got out of one put in the 7100/80 post-cache-addition.

I'm beginning to think that S@h's Mac version was written for the 601 PPC. I had a 603e 100 MHz (Performa) that almost could do 1% per hour (same software set-up and more RAM). If the almost-doubled performance happens with the 8100/100, it'll be crunching almost as fast as the Bondi iMac (G3 233MHz).

[cdhostage]

How much is it costing you in electricity to run these old machines? Is it worth the little bit of status you get from the extra SETi WUs? Personally I would give them to a loca lschool ort take them apart to see how they work.

[Tigerabbit]

Personally I would give them to a loca lschool ort take them apart to see how they work.

Gimme an iMac G4 or better, and I'll even donate them in your name.

I have been taking them apart and re-assembling them. I have parts from four different PowerMacs between a 7100/80 and the 8100/100.

Power consumption? Hmmm. The 8100 (and the 7100) is rated for 9 amps. At 110 volts (typical US line voltage), that's 990 W. In an hour, that's 990 Wh of energy comsumed, we'll round to 1 kWh for convenience. In one month, that 30 days x 24 hours, or 720 hours. So the power consumed in one month is 720 kWh, right? Well, no. You see, I ran the 7100 all thru the month of December, and my electric bill for December shows only 687 kWh consumed, and I KNOW that I ran more than just one computer that month.

In other words, I don't know, and I don't think it's enough to bother over. Besides, there are some G3 upgrades for these machine just waiting for me, now that I know what I'm doing. (I think. )

[gumby5647]

in about a month im adding a dedicated 6100/60 SETI cruncher. LOL

But of course im going to give it its own member name "6100/60"....hopefully it will give some members a little more motivation to crunch some more when they see they are getting out crunched by a 60mhz computer. heh heh heh

[Tigerabbit]

I think there's actually an entire team of 6100/60 crunchers somewhere (xlr8yourmac maybe, I dunno). If memory serves, they get about 1 WU/week, but I could be wrong.

I'm trying to get some G3 PDS upgrades for the cows (7100 & 8100), but I've already used up my 'toy budget' for February. Good thing it's a short month.

[gumby5647]

they are from Lowendmac.com i think. But don't worry, my 6100/60 will be joining the best darned team ever. Team MacNN!