New ram forcing my CPU speed down???

[Sparky Anderson]

What I had before was a P3 700 with 128 MB PC100 generic RAM. I was running at 124 MHz FSB for a CPU speed of 868.

Today I went out and bought a 256 MB PC133 stick seeing as the price of RAM is so cheap right now I couldn't resist. The problem is when I put this stick in I can't boot at 124 MHz FSB anymore, the highest I can boot up at is at 115 MHz. The old stick of PC100 handled 124 for over 2 years now (used to have a 450 running at 124 for 558) and the new stick being PC133 it should easily be able to handle 124. What's the deal? I haven't tried running with just the 256 MB stick yet, because i would really like to and should be able to have them both in.

 

[Budman]

Its probably running at cas2, go in your bios & set your ram to cas3.

 

[Sparky Anderson]

I already checked that, sorry I forget to mention it, running cas3.

 

[Ulysses]

OK. Now Plan B.

Try it with just the new 256. Set the BIOS to default settings and just monkey with the bus speed and voltage. See at what mem bus speed it punks out. Then look at the RAM specs using SiSoft Sandra. If it seems defective(i.e., not really PC133 RAM), then RMA it and order something else.

 

[Sparky Anderson]

OK, just tried it and with just the 256 MB PC133 stick I am able to boot up at 124 MHz no problem. So I'm guessing the 128 MB PC100 stick is having troubles working with the 256 MB stick at higher FSB speeds?

I seem to have two options:

256 MB RAM @ 868 get some cooling and go to 933.

OR..

384 MB at 805.

 

[Usul]

256 MB RAM @ 868 get some cooling and go to 933.

My 2 cents

 

[Sparky Anderson]

Yeah...sigh...the thing is I spent money for another 256, not for another 128.

decisions decisions...

Still trying to get both to work I moved them into different slots and I can boot into Win2K now at 124 but I get Windows errors. :disgust:

 

[jimmygates]

933mhz w/ 256mb will do alot better then 805mhz 2/ 384mb



-Jimbo

 

[Sparky Anderson]

hmmm

yeah

but 384 MB at 868 would be nice too

I'd hate to waste 128 MB just sittin there

 

[rhinox99]

Just sell the extra 128mbs that you can't use. It seems that 256 is the ideal number to have in most operating systems since they don't take advantage of more memory very well

 

[heat23]

ill give ya $35 for that ram