I'm hoping someone can help with some memory and cpu upgrade questions. My FIC PA-2006 M/B has the original Cyrix 6x86 P200+ CPU on it, and two 64MB EDO ECC unb 3.3v DIMMs.
First, I'd like to upgrade the memory. Although there are two empty 72 pin SIMM sockets, I've read that it's not a good idea to mix DIMMs & SIMMs, especially if one is 3.3v and the other is 5v, so I was thinking of replacing the DIMMs with two Kingston 256MB PC133/ 133MHz SDRAM DIMMs, 16MX8 Chip Configuration,168 Pin, 3.3V, 7.5 ns, CAS LATENCY (CL 3), Non ECC, Non REGISTERED - (eBay item 160168779666, http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=160168779666&ssPageName=STRK:MEWN:IT&ih=006). Do you think this will work?
Also, the FIC manual says there's a max of 384MB using two 128MB SIMMs + two 64MB DIMMs, but it has asterisks next to those sizes and states that this size memory wasn't available when the manual was printed. Is it likely that 512MB will work? Will I need to upgrade the BIOS? (I have the original BIOS).
Regarding the CPU, I'd like to replace the socket 7 Cyrix with an AMD K6 -- maybe a III/450 or K6-III+/450 if they'll work with the FSB set at the max (75MHz) -- but I'm not sure how to set the freq ratio to 1.5x for a K6. The CPU to Bus Frequency Ratio FREQ1 and FREQ2 jumpers in the PA-2006 manual from the FIC website shows both jumpers set to the left equals either 1.5x for a K5 or 3.5x for a K6. Is that because the K6 interprets 1.5x as 3.5x? What's the type and speed of the fastest K6 that this M/B can run properly and that you would recommend? The M/B has already has split voltages, so I'm hoping that I won't need a PowerLeap upgrade adapter.
Thanks for your help.
First, I'd like to upgrade the memory. Although there are two empty 72 pin SIMM sockets, I've read that it's not a good idea to mix DIMMs & SIMMs, especially if one is 3.3v and the other is 5v, so I was thinking of replacing the DIMMs with two Kingston 256MB PC133/ 133MHz SDRAM DIMMs, 16MX8 Chip Configuration,168 Pin, 3.3V, 7.5 ns, CAS LATENCY (CL 3), Non ECC, Non REGISTERED - (eBay item 160168779666, http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=160168779666&ssPageName=STRK:MEWN:IT&ih=006). Do you think this will work?
Also, the FIC manual says there's a max of 384MB using two 128MB SIMMs + two 64MB DIMMs, but it has asterisks next to those sizes and states that this size memory wasn't available when the manual was printed. Is it likely that 512MB will work? Will I need to upgrade the BIOS? (I have the original BIOS).
Regarding the CPU, I'd like to replace the socket 7 Cyrix with an AMD K6 -- maybe a III/450 or K6-III+/450 if they'll work with the FSB set at the max (75MHz) -- but I'm not sure how to set the freq ratio to 1.5x for a K6. The CPU to Bus Frequency Ratio FREQ1 and FREQ2 jumpers in the PA-2006 manual from the FIC website shows both jumpers set to the left equals either 1.5x for a K5 or 3.5x for a K6. Is that because the K6 interprets 1.5x as 3.5x? What's the type and speed of the fastest K6 that this M/B can run properly and that you would recommend? The M/B has already has split voltages, so I'm hoping that I won't need a PowerLeap upgrade adapter.
Thanks for your help.