A few Qs for those who have done the IC7 VDIMM mod:

[[SLC]Tachyon]

How powerful of a soldering iron should be used? I only have a 25W Radioshack iron.

How fine of a tip should I use?

What is the best method to pull the resistor off? Should I grab it with some tweezers and pull upwards as I melt each side of it? Any special tips/methods to doing this?

How powerful of a resistor should I replace it with? I am looking to have 2.7-3.3v available after the mod.

Thank you. :)

[NyCUndaGrounD]

The Radio Shack 25 watter is fine because i used that solder iron to do the vmod.

U can look through this (http://www.xtremesystems.org/forums/showthread.php?s=&threadid=12914&perpage=25&pagenumber=1) thread to find more info

I chipped it off with a small screwdriver. Try to solder the resistor out first then if that doesn't work use the tweezers.

A 1k pot should do fine.

[[SLC]Tachyon]

Thanks for the tip. I was originally intending to do the mod in hopes that it'd help my TwinMOS PC-3700- but the stuff is now instable even at its rated speed, using the worst timings available on the IC7. RMA'ing the stuff.

Kinda suprised, got my TwinMOS PC-3200 Winbond BH5 stuff @ 225Mhz, 2.78v (the highest the board can go) right now. Not to bad for the old cheap stuff.

You think that the PC-3200 would be capable of doing 245Mhz if it had 3.2v pumped into it? :confused:

That would eliminate my need to buy any new ram altogether.

[FUGGER]

245 is optimistic, what is the default SPD speed of that ram? cl2.5?

[[SLC]Tachyon]

Originally posted by FUGGER
245 is optimistic, what is the default SPD speed of that ram? cl2.5?

Its default speed is 200Mhz (PC-3200), rated cl2.5 and it does this speed 2-2-2 @ 2.6v. At very lax timings it does 225Mhz @ 2.78v, *almost* all stable.