VDimm mod

[Obelisk79]

Ok, so I have a MSI Neo4-f and I have some BH5 I need to up my volts for. Now from what I understand I link my 3.3v rail directly to my ramslots via a trimpot for control? This is a temporary mod as I want to go with a ram booster later on but my budget is tight and the $2 trimpot fits my couch-change budget. I suppose my biggest question is where should I solder this bad boy up for my voltage. I'd like to try and use my 5V rail instead of 3.3 so I can go up to 3.5v-3.7v on the bh5 if am feeling froggy. Could I connect the 5v signal from where the PS connects to the mobo and then solder it to the output of the vdimm mosfet? Just need some sound guidance before I hose my system up.

[NickS]

I reccomend getting the OCZ DDR Booster :).

There are guides for the vmod out there but they only supply 3.3v max, 24/7.

http://www.newegg.com/Product/Product.asp?Item=N82E16813998301

I'm going to get one for my Neo4 Plat :) Just hook it up and stick it in the ram slot furthest to the right.

Nick

[Obelisk79]

This is a temporary mod as I want to go with a ram booster later on but my budget is tight and the $2 trimpot fits my couch-change budget.

I would imagine the mod should work off of a 5v line similarly to a 3.3v I just want some confirmation before I fry something I don't really feel like replacing just yet.

[nn_step]

http://www.lejabeach.com/sisubb/msinf4vdimm-1.jpg
Thank Rebel's haven for this
thus this is how you do a 3v mod
http://www.lejabeach.com/sisubb/msinf4vdimm-2.jpg

[Obelisk79]

I'm looking for more than just a simple jumped voltage like that. I know that's being picky of me but I'm stubborn,and poor :P

Now I've been reteaching myself electronics since as a technician I tended to spend less time at the component level. I've rediscovered the simple voltage divider circuit and was wondering if this would work for my application... anyone?

http://img238.imageshack.us/img238/2415/voltagedivider8sm.jpg

[Micutzu]

No, it won't work. The 2X512MB BH-5 can pull above 8A RMS current and over 15A peak, you will need a very strong regulator to handle that; resistive dividers can't handle those currents. I'd suggest the simple 3.3V strap mod until you build the booster, it's the effective mod.