PDA

View Full Version : HELP!


ditmx6
04-27-2002, 02:00 AM
I recently added some RAM to my pc 100 (model m748mr) motherboard. This RAM had a sticker on it that said it was only 32 MB worth. However when booting up,the ammount of RAM detected during P.O.S.T. is listed as though I had added in another 64 MB card. Before this recent addition I had two 64 MB SDRAM DIMMs installed that are PC 100. The motherboard I have has a system bus capability of 100 MHz but the RAM that I just added is only a 66 MHz bus (I think). Is there any way that I would be able to verify the bus speed of the new RAM that I just installed? There is nothing on it to indicate the frequency that it operates at. Also I am running a Pentium 2 400 MHz Celeron processor. I'm not sure what the front side bus speed is on it. Would the front side bus speed of this processor affect the speed in which the RAM bus and the system bus operates. If so where could I find out the speed of the FSB. Intel’s site doesn’t have it listed any more. Please help.

Thanks in advance

saphalline
04-27-2002, 02:45 AM
Now that is an interesting story. Sounds like that RAM came from somebody who couldn't count modules! Regardless, if your BIOS and Windows shows an extra 64MB, then that's what it is, sticker or no.

As to the whole PC100 vs. PC66, sounds like your system is upgradable to a 100MHz bus PII (a real one not a Celeron). The Celeron uses a 66MHz bus so all RAM runs at PC66 automatically, so you've been running your PC100 RAM at 66MHz this whole time. PC100 was put in for when/if you upgrade to a PII 350 or higher which can run PC100 RAM.

Unless of course you mean an actual "PentiumII 400MHz" when you say "Pentium 2 400 MHz Celeron processor". The PII and Celeron are completely different processors so it's a little confusing. A PII at this speed can run PC100 RAM at full speed, sorry about the confusion but you started it! http://www.PCGuide.com/ubb/wink.gif In that case, you just slowed down all your RAM to PC66 speed, because of course all RAM must run at the same speed and that speed is the slowest RAM module.

I would check the RAM if I were you, tho, considering the sticker has the wrong size info! What exactly does the sticker say? Give us everything verbatem, all numbers and letters.

------------------
Windows 95: A 32-bit extension of a 16-bit overlay for an 8-bit OS that was originally designed for a 4-bit processor by a 2-bit company that can't produce 1 bit of good software!

iisbob
04-27-2002, 11:39 AM
Run this program, WCPUID (http://www.3dcenter.de/downloads/wcpuid.php) it's a small utility that will tell you exactly what CPU you have, it's identifying features, your true FSB and RAM, and your motherboard CHIPset data. It actually goes into a little more detail if you need it.

If, as stated above you have inserted a " mixed up " module, you may want to remove it until you can identify it properly so that it doesn't cause you problems in your system down the road.



------------------
iisbob

Computer-Show me the Enterprise; no bloody A, no bloody B, and no bloody C-just the original...Mr Scott { from a STNG episode }

ditmx6
04-28-2002, 12:35 AM
Thanks for the quick response saphalline. I think that I was misled when I originally purchased the processor. The vendor said that it was a P II that operated at 100 MHz FSB. When I took it out and examined it I found that it was a Celeron 400 MHz. Althoug when I look in the properties of the My Computer icon, I noticed that it was indicated to be a P II processor. Anyway, thanks for your help. Iisbob I'll check that program out sometime. Hopefully it will help.