RAM upgrade for wl-500gx

[oleo]

PC133 means 60ns while PC100 means 70ns RAM speed. If you look at schematics you'll see -6 RAM is specified. I could not tell you if PC100 will work, but I assume that it should. If you look at http://wl500g.dyndns.org/sdram.html you will see that there is cas_latency whch is calibrated during boot if sdram_ncdl is reset. So there is a chance that PC100 should work.

With 256MB 4chip module you could have 128MB router. Oleg reported success on Premium, while I've read that Deluxe had problems with 128MB.

[Sanvean]

Hi!

I want to say "Thank you" to all contributors in this topic. Thank you, that you have believed in this, for a first look, crazy idea. Thank you for priceless hints, that you gave to all WL-500 fans. I have completed this project and now want to bring my coin into the piggy bank =)

I have successfully used Hynix memory from an old 4-chip 128Mb PC-133 SDRAM module. The chip was HY57V561620CT-H. The chips from the DIMM module were desoldered using an kitchen oven, just like oleo did it, but the RAM chips from the motherboard I have removed using an ancient technology, described here:TSOP Removal

[stevecissp]

PC133 means 60ns while PC100 means 70ns RAM speed. If you look at schematics you'll see -6 RAM is specified. I could not tell you if PC100 will work, but I assume that it should. If you look at http://wl500g.dyndns.org/sdram.html you will see that there is cas_latency whch is calibrated during boot if sdram_ncdl is reset. So there is a chance that PC100 should work.

With 256MB 4chip module you could have 128MB router. Oleg reported success on Premium, while I've read that Deluxe had problems with 128MB.

Has there been any new success stories out there operating a WL-500gx reliably on 128MB or is 64MB the established limit?

As far as ram selection goes. Is it fair to state any PC133 memory with work or is it more specific? There are plenty of PC133 168pin dimms on ebay including many 512mb (16 x 32) which are well priced or alternatively there are plenty of 8 chip laptop ram modules which are stated as being PC133.

Advise here would be appreciated.

Thanks
Steve

[mistraller]

Finally, I found hardware, AND time to do this upgrade. At the moment I'm practicing myself with desoldering/soldering the chips. I use the method as described earlier, with wick and a 40W soldering iron. This looks like a fast and reliable solution. Tomorrow I will try the first router, I have three units to do