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SIMMS on a 100MHz mobo? will this work?

kami

kami

Lifer
I have this FIC VA-503+ mobo with an AMD K6-2 300mhz (100mhz bus) and the motherboard has 4 SIMM slots in addition to the 2 DIMM slots. I know there will be a performance hit, but is it possible to run SIMMs with this CPU? I checked the FAQs and manuals, couldn't find an answer. I'm guessing it would, or why else would they put SIMMS on a board designed primarily for the K6-2?
 
If you can find SIMMS that will run at 100 MHz, it should run fine. I ran my SIMMS at 75 MHz in that board. The other solution would be to simply set your FSB to 66 MHz, & set your multiplier to 4.5. This would leave both CPU & memory in spec, should be completely stable, & not all that much slower than 100x3.0 with DIMMS. If that works, I'd try for 75x4, & then 75x4.5. 75x4.5 should work well, & maybe even 83x4 for 333.

Viper GTS
 
SIMMs do not work at the same speed as the FSB. so it does not matter. having a 100 MHz FSB does not make that 60 ns module work any faster.
 
That board should have settings to choose whether the memory runs with the pci clk or the FSB clk.
 
Yeah, it doesen't matter. THere's no such thing as a 10ns SIMM 🙂 50ns is as low as they go.
 
just try it. sometimes it works fine. On some of my MBs I've had to set the bios for 70 ns edo even though the simms were supposedly 60 ns. Now and then I can't get simms to work where SDRAM dimms work fine. I haven't a clue why, it seems to be just a quirk of the particular MB.
 
actually some old 50ns micron could hit 100mhz bus. 50ns for that is the total memory access time. Its 10ns per cycle and 3 cycles for an access i.e. 3-1-1, so that is 30ns+10ns+10ns which is 50ns
 
If you check FIC's web page, they have numerous jumper settings for running the bus at 100 but the memory with simm's at 66.

Right now my gf's brother has a P233 in the board running with 32MB of simms. I'm going to change the FSB to 100 but leave the memory where it's at and throw in a k6-2 450.

www.fica.com I believe is the american version of the site, but if it doesn't work, just pick the one from taiwan in English.
 
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