Cheap Crack

[Jimbo]

I have some questions since my BP6 delusion of grandeur bit the dust.
I have (I think) two simple questions:
1. Is RC5 ENTIRELY CPU speed dependant?
2. Is there any performance difference between a Celeron II @ 850 or a Pentium III @ 850 (this comes back to the 4way vs 8way L2) for RC5 only?
Are there any other factors that will help or hurt how fast a machine can crunch through keys? (OS or amount of RAM or anything else)

 

[Kwatt]

I have not noticed where cache size or speed makes any difference to RC5. Only Mhz and chip type. i.e. AMD,Intel,ect.

This is a link where you can check different speeds and types.
http://teamanandtech.dhs.org/speed.asp

Just fill in the blanks.

There are others here who can explain why because I'm not sure.

 

[Jimbo]

Wow! Looking at the G-4 numbers they kick the hell out of anything X86. Can that be right? Are we truly inferior on a machine to machine basis to MACs?!
What gives on that scene?

 

[JonB]

No, your eyes aren't fooling you. The G4 Altavec (sp?) instructions do give a Mac a crunching advantage. But, some of the upcoming Intel and AMD processors may have multiple clock speeds for differing parts of their processors and could retake the speed crown. If they crank up the speed on the Integer section, it will be great.

 

[Jimbo]

Yep, It looks as if the Celerons at 850 are really close to a Pentium III at the same speed.
Bwhahahahah

 

[Engine]

Yeah, it's the Altivec instructions that let the G4 go so fast. I don't know much about it, but from what I understand the registers in the G4 are wide enough that rc5 blocks can be bitsliced.

 

[Russ]

RC5 blocks can be bitch-slapped?

Russ, NCNE

 

[Scorpion]

Psst... You say you need some cheap crack?

 

[BoberFett]

Normally I'd recommend that you lay off the cheap crack, but in this case I'll make an exception.

 

[Tom]

Take a look at the Celeron 2 850/100 here..



http://www.anandtech.com/showdoc.html?i=1261&p=17

 

[Jimbo]

Bingo Dead Parrot that is EXACTLY what I was looking for, many thanks!
Now on to my next question:
1. Where is the hack to make 566s run at the 100 FSB. I saw this somewhere (it was similar to the B-21 pin taping procedure for the slot ones) that is used on S370 chips so I will not need a converter card. There is also a hack for upping voltage by covering some of the pins as well.
I have checked (please forgive me) Tom's (I hate Americans) Hardware but found nothing.
Any pointers?

 

[Batti]

Just use a board that lets you set it in the BIOS. My Abit BX6r2 was just a simple BIOS change to run 850. Easy!!

 

[dvch]

Jimbo-I have a 566 Cel 2 running at 850 1.65 vcore. A friend of mine can not get his above 638 @1.7 vcore. I think the 533a is a better "sure thing".

 

[Jimbo]

This is the third time I had to type this message. Explorer kept crashing on me.
Batti: There are boards that let you make these changes in the BIOS but they also cost about $100+ (more if I need a converter card). This then makes the project a little cost prohibitive if I want to do a few of these.
I was trying to keep cost under $200 a node.
Dvch: Good point. I may go that route.
I know ?bummer? had some 810 boards for sale in the trading forum (they are gone now) that were about $37 a pop. That is what I am thinking. I also know that this board also comes with built in LAN on some versions that would be even better.


Jimbo

 

[MWalkden]

Jimbo,

Here's the voltage tweak on the 566:

http://www.hardocp.com/articles/intel_stuff/bumpvoltage.html

What happend with your BP6 "vision"?

 

[amok]

Actually, you can use any old BX board along with a $20 slotket. The combo could cost you as little as $65 for the board and slotket. If you are bound and determined to use something like the i810 it will run you around $70 for a board that will allow you to overclock and accepts fcpga chips.

The other option is using a dual slot 1 BX board and two fcpga slotkets, which would run you on average about $160 for the setup. There isn't really an option as cost effective as the old bp6 setup for the new fcpga chips. And of course going dually is always going to be cheaper for a crack-rack setup, because you don't have to pay for memory, hard/floppy drives, cases/ps's, nics, and possibly video cards twice. That factor alone can cut down serious costs. With a dual slot 1 epox board and two slotkets you can put together a 2 cpu system for around $400, or about $200/cpu (using c566's).

 

[Jimbo]

I heard, in this forum actually, that the new Celeron IIs would not do SMP. If I got bad advice then someone?s life is in danger.

 

[Jimbo]

MWalkden: Thanks for the voltage tweak. This is just what the doctor ordered. I gave up on the BP6 because it would not do the 800-850 SMP thing with the new Celerons.
Now does anyone have a link for the 100 FSB tweak?

 

[office boy]

amok, no need to ditch that BP6 just for some coppermine loving, you can get some neo370's and rock... (for about $25 each)

 

[MWalkden]

The BP6 will do 100 FSB, SunshineStar sells an overclock package for $330 US with dual cel 366's @ 550 on a BP6 (although going there just now it seems they have removed that from their page) Currently they are running a PIII 600 @ 800 package instead. If you want to try and get their dual 550's package they may still be able to get you one but I wouldn't wait!

So far the Flip Chip Celery's are a no go on SMP for the most part. There may be a way to do them but I haven't come accross anything yet.

 

[MadRat]

Maybe you have to hack the celeron!!'s like you used to have to hack the Celeron Slot-1's.

Has anyone simply tried to run a P!!!-800 (8x100) with a C!!-533@800 in SMP?

 

[Jimbo]

I don't think that I can use the Celeron II in any SMP config.
The only thing that I need now is to find out what frick'n pin I need to hit with nail polish (a la B-21) to make the 100 FSB love happen.

Jimbo

 

[office boy]

Why don't you tell us what MB you have?
your life could be a hell of a lot easier...

 

[Jimbo]

Well... I used to have a BP6 but sold it http://forums.anandtech.com/messageview.cfm?catid=45&threadid=197692
I have not bought the new board yet. I am looking for the combo of really stinkin' cheap and CuMine support.
I think that pin trick is independant of the board however. I swear I saw it somewhere.

Jimbo

 

[office boy]

you are correct, but a LOT or boards capable of 100Mhz have a way of forcing the CPU. With out covering pins, soldering, or other weird stuff like that. It's not 1998 anymore.