Re: Server Upgrade
Robert Shiels wrote: As expected, the DIMMs are PC100 and not PC133. I strongly expect the motherboard will not be able to use the PC133s so either we need to upgrade the mobo, or change the order to purchase slower RAM. Er, do you mean "will not be able to use the PC133s" or "will not be able to use the PC100s and we'll need to get even slower RAM"? And AFAIK, if it takes SDRAM at all, you can put in whatever you want; the speed is determined by min(mobo bus speed, memory spec speed). I've got PC133 memory in my Celeron board (66 MHz bus) and it works fine; the memory doesn't seem to care that it's accessed more slowly than it's capable of. (And another bank has, I think, PC100 memory in it -- the mix-n-match doesn't seem to be deleterious, either.) Cheers, Philip -- Philip Newton [EMAIL PROTECTED] All opinions are my own, not my employer's. If you're not part of the solution, you're part of the precipitate.
Re: Server Upgrade
From: "Philip Newton" [EMAIL PROTECTED] Er, do you mean "will not be able to use the PC133s" or "will not be able to use the PC100s and we'll need to get even slower RAM"? And AFAIK, if it takes SDRAM at all, you can put in whatever you want; the speed is determined by min(mobo bus speed, memory spec speed). I've got PC133 memory in my Celeron board (66 MHz bus) and it works fine; the memory doesn't seem to care that it's accessed more slowly than it's capable of. (And another bank has, I think, PC100 memory in it -- the mix-n-match doesn't seem to be deleterious, either.) Well, that sounds encouraging. Lets stick with the current order then - I didn't know you could mix-n-match the two types of RAM on the same board, I'm still thrilled that with DIMMs you don't need to add them in matching pairs :-) Even if there is a problem, I'll volunteer to buy the PC133 chips for my server at home. /Robert
Re: Server Upgrade
I have a spare pc100 DIMM, 128Mb, CAS2. Could you use this. Thanks Jon * Jon Galliers [EMAIL PROTECTED] Programmer Perl/C++/MySQL/DB2/Java Design Net http://www.design.net.uk Tel: +44(0)870 240 0088 Fax: +44(0)870 240 0099 *
RE: Server Upgrade
On Fri, 20 Apr 2001, you wrote: http://se71.org/myimages/pm/picklist.jpg is the picklist for our server. As expected, the DIMMs are PC100 and not PC133. I strongly expect the motherboard will not be able to use the PC133s so either we need to upgrade the mobo, or change the order to purchase slower RAM. Can you try and do this before dabs dispatch the order Alex? umm .. I recently obtained some new RAM and got PC133 even though I only have a PC100 mobo and it works just fine. In general using faster memory in a slower machine is not a problem, but don't try it the other way around. The speed of memory is its minimum guaranteed speed, its usually faster than what it says on the tin anyway. From http://www.directron.com/faqmemory.html 2. Can I mix PC -100 and PC-133 memory in the same system If the system supports 100MHz memory, you can normally use 133MHz memory in it as well, and can even mix the two. However, there would be no advantage gained as the 133MHz memory will only run at the bus speed of 100MHz. Using the 133MHz memory will not make the system more stable if it is being Over-clocked. Some systems, though, will balk at the incorrect speed being reported by the Serial Presence Detect program. We suggest using only the memory specified by the system manufacturer, and cannot guaranty that memory which is different than the manufacturer specifies will be 100% compatible HTH TCB
