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SETI fsb or cpu power

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Just shoot

Member
Joined
Jan 2, 2001
Location
Dairyland
My question is does seti like the higher bandwidth overclock or just raw cpu power? The reason being i've got to main rigs crunching seti ( see sig ) the kt7a and the a7m, both very good crunchers doing about five WU a day each, the kt7a being slightly better but not by much.
I was playing with the a7m and the 1.2 T.B. last night after getting the golden socket from blue jester 2112 and ran stable all night at 12 x 130 which would put it 1560. It appears to be crunching realatively the same as 9x159 maybe alittle faster but hard to tell. I really like that I'm not stressing the voodoo card with the lower FSB but on the other side would not want to miss out on a WU. HAHA
Need to do some SETI benchs but just haven't got to it yet, thought I'd get some feed back from the SETI GODs.
:D
 

Mictlan

Senior OC BOINC User
Joined
Apr 17, 2001
Location
Mexico City, Mexico
SETI loves high FSB and lower memory timings.....

If you have the choice of running a 8.5*133 or 11*100, the 11*100 will be crunching faster than the 8.5*133.

In the same way running memery timings 2-2-2 will be 10-25% faster than running 3-3-3.

This discussion has lots of data here in this forum. Please do a search and surely some hard data will be available. Like this thread, there have been many discussions about FSB and memery timings and their effect on the time it takes to crunch a WU.

Also you can go to the benchmark page and see some of the data there. SOme have tested the same processor at different multipier*FSB settings
 

eobard

Give me a break Senior
Joined
Jul 12, 2001
Definately bus speed is better than clock multiple. My K6-2 tops out at 600mhz, beyond that it will run but not stable. If I set it to run at 100X6.0 (600mhz total) I can do a wu in about 22.5 hours minimum. If I set it to 124X4.5 (558mhz total) it will do a wu in about 19.25 hours minimum.
 

Antimatter

Member
Joined
Feb 22, 2002
Location
Theresa, Wisconsin
Originally posted by Mictlan
Like this thread, there have been many discussions about FSB and memery timings and their effect on the time it takes to crunch a WU.

Wow, that's some high fsb. How long would you be able to run that before it'd start cooking?
 

Mictlan

Senior OC BOINC User
Joined
Apr 17, 2001
Location
Mexico City, Mexico
Some of our members have reached FSB near the 180 MHz.....using the Epox mobos.....as always do a search in this forum, lots of interesting data can be obtained that way.
 

Larry Quinn

Member
Joined
Sep 1, 2001
Location
Oklahoma City, Oklahoma
Mictlan said:
SETI loves high FSB and lower memory timings.....

If you have the choice of running a 8.5*133 or 11*100, the 11*100 will be crunching faster than the 8.5*133.

In the same way running memery timings 2-2-2 will be 10-25% faster than running 3-3-3.



Ummmmm....

Could you clarify...if SETI loves high FSB why will 11*100 beat 8.5*133....

If I understand you..and FSB is king...then 8.5*133 would crunch faster than 11*100....


Please....Maybe I'm not understanding you.

Larry
 

Yodums

Senior Member
Joined
Oct 5, 2001
Location
Ottawa, Canada
Larry Quinn said:



Ummmmm....

Could you clarify...if SETI loves high FSB why will 11*100 beat 8.5*133....

If I understand you..and FSB is king...then 8.5*133 would crunch faster than 11*100....


Please....Maybe I'm not understanding you.

Larry

Take out your first line. Its high FSB first always especially clock for clock.

My high FSB seems to be be crunching as fast as some Tbird @ 1500... :D
 
OP
J

Just shoot

Member
Joined
Jan 2, 2001
Location
Dairyland
Yodums said:


Take out your first line. Its high FSB first always especially clock for clock.

My high FSB seems to be be crunching as fast as some Tbird @ 1500... :D

I have a hard time with this i don't know why I just do. would you be willing to run the Seti bench on this system and I'll run it on my 1.4 @ 1644 I'll clock it down to 11 X 136 and we can compare the two. Hows that sound it still won't be apples to apples because your running ddr I've only got sdram on that board. It should give a idea though. What you think.
 

Yodums

Senior Member
Joined
Oct 5, 2001
Location
Ottawa, Canada
Just shoot said:


I have a hard time with this i don't know why I just do. would you be willing to run the Seti bench on this system and I'll run it on my 1.4 @ 1644 I'll clock it down to 11 X 136 and we can compare the two. Hows that sound it still won't be apples to apples because your running ddr I've only got sdram on that board. It should give a idea though. What you think.

Would you be willing to it after the races?

I was planning to do it, but after the races. We'll see how it compares :D How fast does it crunch on average?

Yodums :D
 
OP
J

Just shoot

Member
Joined
Jan 2, 2001
Location
Dairyland
Well its slightly faster than my a7m266 at 159 thats why I'd like bench it against a extreme FSB of 171. right around 4.5 hrs wu
 

Yodums

Senior Member
Joined
Oct 5, 2001
Location
Ottawa, Canada
In the red column you'll see how fast it usually takes me to finish a WU, high 3 hours when I'm away from the cpu and not using anything else to eat up cycles. 4 hours when I'm using it.

Remember it's in red.
 

Mictlan

Senior OC BOINC User
Joined
Apr 17, 2001
Location
Mexico City, Mexico
lonewolf1983 said:
i think he put them in the wrong order by accident
the higher FSB will crunch faster

Yeah....sorry I made a mistake
*****slapping in the forehead*****
8.5*133 will be faster than 11*100.....