Since the price of PC133 is almost half of the PC100. Does anyone know if a PC133 SDRAM can be used on a system that require PC100 SDRam. Thank you.
In most cases, yes. Every now and then you'll run across a motherboard that won't play nice with faster memory, but most of the time, you'll be alright.
I agree with B. Also, less generic RAM is usually more compatible than no-name RAM. For instance, Kingston RAM is compatible with most everything.
Our older Gateway P3-500 did not like PC133. It recognized the memory but would not boot. However, make sure you don't mistake a slow bootup for failure to boot. Wait several minutes for bootup, especially on older machines. It takes awhile for them to recognize, test, and reconfigure the system for new memory the first time you turn on the computer. Richard Schennberg.com
yeah, the PC133 will just run at the speed of the slowest RAM installed (PC100), also try swaping the SIMMs around and finally are you 100% sure the RAM is functioning, you could try them in another system, but swaping the RAM around may work, also remember that 1 or more of the SIMM socket could be faulty causing unknown errors
You also have to make sure that the RAM slot itself is working, and that the timing and voltage on that RAM is compatible with your motherboard and your pre-existing RAM.
:swear:, i thought PC66, 100 & 133 were 72 pin SIMMS[ot]i didn't know you could get 72 pin DIMMS, but according to this I'm a proper pan head[/ot]thankies :beer: Edit: i didn't know that DIMMS came to power along with the pentium
Part 2: I was able to add another 256 MB when I used PC100, for a total of 640 MB (2x256MB + 1x128MB). Richard Schennberg.com
