View Full Version : 3.3v Vddr mod on msi k8n neo2 / pdp tccd
bobmanfoo
12-21-04, 01:11 AM
did a vdimm mod by soldering wires from +3.3v rail to vdimm cap., i modded a pair of molex plugs to act as a brigde to open/close the line. it seems my chips respond well to more voltage as i expected, results:
2.85v
215mhz 2-2-2-5
243mhz 2-3-3-5
260mhz 2.5-3-3-6
280mhz 2.5-4-4-8
3.3v
230mhz 2-2-2-5
255mhz 2-3-3-5
270mhz 2.5-3-3-6
285mhz 2.5-4-4-8
:clap:
EDIT: hmm seems like the ram could use more voltage, when i turn barely turn down the pot on the +3.3 rail my speed and timings get unstable, from 3.34v in bios to 3.3v in bios.
whats the max i could turn up the +3.3v rail with out damaging other components? would damage anything by running with the led on my OCZ powerstream red? its going to turn red if i turn it up alot more, tia
a pic of vdimm mod (original from RebelsHaven): PERFORM AT YOUR OWN RISK and remember to cool the ram
flapperhead
12-21-04, 08:22 AM
nice, looks like the mod really helped...
Can you get more pics of what it looks like?
bobmanfoo
12-21-04, 11:53 AM
Can you get more pics of what it looks like?
just added new pic, i don't think gskill sticks like high voltages but you could give it a try
I know they dont need the high volts to achive insane speeds, I was just inquiring on how it was done. Looks nice though!
Could you use a 'on/off' switch to act as a bridge instead of another molex connector?
Have you tested this with a voltmeter yet?
bobmanfoo
12-21-04, 01:09 PM
haven't tested with multimeter yet, will do it soon, but my 3.3v rail led is green so it should be ok
an on off switch would work fine, i just used whatever i had laying around
I know they dont need the high volts to achive insane speeds, I was just inquiring on how it was done. Looks nice though!
Could you use a 'on/off' switch to act as a bridge instead of another molex connector?
Have you tested this with a voltmeter yet?
Ofcourse you can, it does the same thing.
what do you mean by "Tested it with a voltmeter"?
Suma.
testing with a voltmeter will insure there is no fluxuation on the 3.3v line. I would hate to do this to a board and come to find out there is a variation on the 3.3v line. For example, I dont have any way to find out if my 3.3v line is holding stable unless I put a voltmeter on it.
bobmanfoo
12-21-04, 02:23 PM
testing with a voltmeter will insure there is no fluxuation on the 3.3v line. I would hate to do this to a board and come to find out there is a variation on the 3.3v line. For example, I dont have any way to find out if my 3.3v line is holding stable unless I put a voltmeter on it.
well i don't know my exact voltage but according to mbm5 and corecenter, it goes from 3.33v-3.34v, so very little fluctuation
testing with a voltmeter will insure there is no fluxuation on the 3.3v line. I would hate to do this to a board and come to find out there is a variation on the 3.3v line. For example, I dont have any way to find out if my 3.3v line is holding stable unless I put a voltmeter on it.
Oh I see what you ment there.
Well my modded TP550w's 3.3v is @ 3.45v rock stable, idle/stress it doesn't care :)
Suma.
Nice Suma... well I know the Gskill doesnt need insane volts to get insane speeds.. plus I dont like to generate more heat then needed. Its a nice and simple mod though! IF I ever go SLI, Ill mod this board just to see how it works.
Until then, no modding for me!
If we can get more people to do this, I vote sticky!
bobmanfoo
12-21-04, 09:05 PM
Osirus, someone on xtremesystems gave his gskill 3.3v and it worked out well for him....
Joe Camel
12-21-04, 09:50 PM
Osirus, someone on xtremesystems gave his gskill 3.3v and it worked out well for him....
that was me.
3.28v (abit bios) seemed to let me run 2-x-x-x into the high 260's
<3.0v it wouldnt
seemed to help tighten timings more than higher HTT/FSB
hum.. So Joe Camel, what Gskill are/were you using?
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