FPM 60ns VS EDO 50ns

[zipper]

Hyperspeed wrote:
According to some Phase5 thing I read, no Amiga accelerator utilises EDO for some techy reason.

Almost true. Except A1200xl and QuickPak 4060.

[Hyperspeed]

I will only use FPM type 72-pin SIMMS too.

I ordered a 128MB FPM from OEMPCWorld and the stupid arseholes sent me some EDO SIMM that I could get anywhere much cheaper. I checked, double-checked and triple checked.

I have quoted twice the dipstick there who said "Your machine is too old. Amiga cannot take more than 10MB of memory. I am cancelling your order!"

:-D

Anyway, the QuikPak 4060 gets some serious problems so I've read. Incompatibilities with certain software (Shapeshifter if I remember correctly).

I bought a Blizzard 1230-IV from Power Computing nearly 10 years ago and it came with an ACT single-sided 16MB EDO SIMM and it gave me unreliable performance. I used this in the 1260 I later purchased but later put a Micron single-sided 64MB FPM in and started seeing reliability increase.

I get SCSI problems with the SCSI-IV kit from DCE, I think that might be to do with oxidisation on the contacts. I'll need to clean that up and get the desktop cooled too.

[humppa]

AmigaMance wrote:

I'm surprised you thought the 2x 50ns SIMMs were faster as when you have two SIMMs on a Blizzard the thing should revert down to 70ns shouldn't it?

 :-o Is this true?
 I have one 60ns SIMM on my BPPC and i was planning to add another one in the second memory slot. But if they are going to be treated as 70ns modules, i'd better stay with one. What do you think?

I am using two 50ns EDO SIMMS (total of 128MB) in my BPPC. I tested various configurations using Sysspeed. The way they are "treated" depends on your settings in the early boot menu of the BPPC, of course.
With the 50ns SIMMs, I could use a custom setting without any waitstates. This setting gave me better benchmarks than the 60ns setting. I doubt that you are able to do this with 60ns SIMMs.