[RC5] Re: 386SX: do they help?

Kai Rode kai_rode at bigfoot.com
Mon Jan 11 19:20:35 EST 1999


On Mon, 11 Jan 1999 11:25:06 -0500, you wrote:

>My Intel Celeron 466 (overclocked) machine is about 500-600 times faster
>than 386SX-16

>If all the other (160,000) machines were at least 100 times more powerful,
>the contribution of 386s would be

>	(40,000*1) / (160,000*100+40,000*1) * 100% = 0.249%

>Would it help the project a lot?

Every computer working on the contest helps. The question is: does it
help enough to justify the cost? Sure, if the the 386 is turned on
anyway, there is no reason not to let it crack keys, but I wouldn't keep
the machine turned on instead of powering it down overnight just to be
able to keep cracking (my PentiumMMX-208 and Celeron-400 run 24 hours a
day during DES contests, but I wouldn't keep a 386 turned on at night if
it hasn't to be turned on anyways (servers in an office environment
etc.)).

Assume a computer has a wattage of 50 Watts. The power consumption of a
386 and a P-II are almost the same (the processor needs less power, but
the RAM needs more on the 386). Also assume that a kWh costs €0,15,
which is fairly realistic for Europe. AFAIK energy is cheaper in the US,
so substitute $ for € (euro) if you want, its's only an estimate. 

Then the cost for cracking one Terakey on the P-II is about 0.06 cent.
On the 386 however it's 30 cent. Is it worth it?

	Kai
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