How to Vdimm MOD P4C800 and P4P800 DELUXE

[Mr Gadget]

After a lot of googling (is that a word?) I found a supplier that will ship 1 or 2 grabbers at $1.90 without a 20 to $50 min order! The company is Mouser Electronics.

Pomona SMD Grabbers (5243)

The also carry the 50k trimpot for $6.38

Bourns 50K 4 Turn Pot

 

[Grandpa Dan]

Nice find on the grabbers. That pot is a 4 turn, which is quite a bit when you're doing it with your sys on and using a screwdriver. A single turn is alot easier.

 

[gustav]

Mr Gadget: there are a lot of grabbers there, which one do i get or doesnt it matter?

Grandpa Dan: a 4 turn isnt as good, so can you give us a link to something that is good, a 1 turn pot?

 

[Mr Gadget]

I think the 5243 model grabber is the one most folks use, it's the model I ordered. It should be here by next Monday.

I debated (with myself of course) on getting the 1 turn version, but in the end I went for the 4 turn with the idea that I would have more control - never thought about having to twiddle it with the system on... duh!

Anyway Bourne makes a 1 turn version as well. I believe it was listed on the same page in their catalog on the Mouser site.

 

[Grandpa Dan]

Mr Gadget: there are a lot of grabbers there, which one do i get or doesnt it matter?

Grandpa Dan: a 4 turn isnt as good, so can you give us a link to something that is good, a 1 turn pot?

The 4 turn will work fine, just more turns to adjust it. A 1 turn requires alot less adjusting. Remember, the pot is basically mounted to your mobo and is about the size of your thunbnail. When you adjust it, all of your components will be installed and the power is on. To adjust it you use a small screwdriver...How many rotations do you want to make 1 or 4?

 

[gustav]

on the link you supplied, there are many that start with 5243. but then after that there is a number, they got 5243-0 through 5243-9...which one did you get, and do they have a 1 turn pot i can get there as well?

i think i still remember how to do this mod, but refresh my memory. i believe it goes grabber on pin 6 to the pot, then a wire from the pot to ground, such as a screw on the hard drive cage, right?

 

[Grandpa Dan]

I mounted the pot to a fan plug for the ground. So it plugs on to a fan header on the mobo. The 5243-2 is the grabber.
Any pot noted as "single turn 50k" on this page will work.

http://www.mouser.com/index.cfm?&ha...pot&Dk=1&D=*"50k"*+*trim*+*pot*&N=0&crc=false

 

[gustav]

grabdpa dan, may i contact you on aim? or dont you use aim?

 

[Grandpa Dan]

 

[gustav]

cool. thanks for the pic. it helps.

 

[HyperCube]

Has someone succesfuly completed this modd on P4C800-E deluxe? Please, tell me.. I want to do this on my P4C800-E and Mushkin level 2 3500 and I will realy need your help! (I hope you are able to help me?)

 

[Grandpa Dan]

Did you read this thread from front to back? Read this thread also.

 

[HyperCube]

Grandpa Dan: yes, but my native language is not english, and I don´t understand all the things yet. And on forums, which is in my native language nobody has this mod..

 

[Grandpa Dan]

Sorry...O.K. which parts don't you understand?

 

[Needitcooler]

Vdimm mod went great on my P4P800 dlx. Running at 285 fsb with 2-2-2-5. Turbo and MAM enabled. I love this mod.

 

[Propilot]

Sorry if I am misreading this.
Wire(grabber) to pin 6, then to Pot. Then pot to ground?

There is no positive (+) feed here? You are adjusting negative (-) current/ground?

This looks easier than I thought.
So when you take a voltage measurement where Grandpa showed, is that a negative (-) voltage point or positive (+)?

Thanks.

 

[Grandpa Dan]

Thats the actual voltage going to the ram.

 

[Propilot]

Ok, but that doesn't answer my questions about the polarity. (sp)

 

[Propilot]

Mainly when you check the voltage there, is that a negative (-) feed?

 

[Grandpa Dan]

no, hook the ground from the dmm to the case and the + to the check point.