how safe is it to run PC3500 ram above 2.9 volts 24/7?
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how safe is it to run PC3500 ram above 2.9 volts 24/7?
So a 680 ohm resistor herm!!!!! Tempting very tempting. My ram should be good for it. Would be very nice to get there stable at 200mhz fsb isn't stable for day to day running, just a few benches after I put my Radeon 9700 in board. Was stable at 200mhz and no more with a TI4400. Go figure.Quote:
Originally posted by Jeff
Yep, dual channel DDR. ;) And I just installed a 680 Ohm resistor instead of the 750 Ohm and now my Vdd is up to 1.82v. At 1.79v my 220MHz failed around test 15 of Prime95. Now at 1.82 I'm at 221MHz and still working up. I'm pretty sure my RAM is going to start failing soon so I don't see the point in raising Vdd up much more than ~1.85v.
Let us know how it works out for you.
I've run my ram 2.9 almost every minute since the day I got it.. and there is np... gamer if you r worried run it at 2.77 and be happy..., but you will prolly not see the fruits bro.
well testing my mod now. Very easy to do. 680 resistor to pins 1 and 4. PS thanks for the pic. I have 1.84v vdd now. Will test in 3d etc.. over next couple of days
thanks for info
great forum to learn this stuff in.
Awesome! I told you guys high Vdd is the key to high FSB. ;)
:banana:
Awesome. I can't wait till my board gets here. How much you wanna bet I have the warranty void in the first 10 mins :D
:thumbsup: You were 100% correct! :toast:Quote:
Originally posted by RichBa5tard
Awesome! I told you guys high Vdd is the key to high FSB. ;)
:banana:
I've run my Crucial PC2100 RAM at 3.1v to 3.2v for over a year now without a problem. I've also run my Corsair XMS RAM between 3.0v and 3.22v for the past 8 or 9 months without a problem.Quote:
Originally posted by [H]AMDGamer
how safe is it to run PC3500 ram above 2.9 volts 24/7?
Just make sure you have decent air flow around them so they don't overheat and you should be fine. (just remember, this is at your own risk and if they blow... it's your fault not mine) ;)
I will be cooling my ram and chipsets with chilled water what r the safe volts for my broad.
Im wondering if i should do this, i can pretty much do 215mhz Prime95 stable with a single stick, and do "post/benchmark" shots up to 226mhz.
I think i'll hold off until the second stick comes, i will probably see an improvement in overclocking then.
Thanks Jeff & Learn for the mod, good work. Installed it this morning to start testing it. I set the variable resistor to 800 ohms before installing an at first boot in pc health showed 1.80v vdd, mbm 1.81v. Right now set at 205fsb an 2.63v for memory where it was taking 2.77v before an noticed the vcore does not flucuate now. It seems to have help stablize the system more. Thanks for posting the mod.
I've got only a 10k variable pot at hand and i'm eager to try it out.
It won't hurt using this resistor instead of a 1k, no? I'll start with pot set to max resistance and turn it slowly until i'll reach 1.8Vdd. Is this the right way to work? Please give me your opinion, because I've got bad experiences with voltmods. :)
hi ! mhmm i've only 430OHM resistors here :( what do you think... its too dangerous ? What VDD would I have then ?
I had a brain fart muzz. I'm not sure where to measure it with a DMM. I tried measuring all the pins on 3037 and none of them seemed like Vdd.Quote:
Originally posted by muzz
Where do I measure(Vdd) again?
I guess we just have to trust the BIOS, MBM, and USDM for now. ;)
[The Vdd(chipset) mod described in this thread will VOID YOUR WARRANTEE!!! Only attempt the mod if you understand this and are willing to risk damaging your board since any voltage above stock can damage the voltage regulator and/or northbridge(and video card in one case). PROCEED AT YOUR OWN RISK!!!
QUOTE]Originally posted by xtreme
hi ! mhmm i've only 430OHM resistors here :( what do you think... its too dangerous ? What VDD would I have then ? [/QUOTE]
430 Ohms would be approaching 2.0v... I don't think you want to do that but it's really up to you. I don't think anybody has fried thier board yet so nobody really knows what too much is. My gut says that 2v is too much but who knows.
RB, just be careful when you get to the lower range of that pot. The voltage goes up quick from 1k to 550 Ohms so you can go from 1.7v to 2.0v in a hurry.
A potentiometer is just an adjustable resistor, right? I'm getting ready to hit radio shack, and I want to make sure I get the right thing. Anyone get their stuff from there, if so, what P/N? :)
Better yet, here is the link to the potentiometers @ RadioShack. Which one of these do I need? Or, would it just be easier to pick up a normal resistor?
The Vdd(chipset) mod described in this thread will VOID YOUR WARRANTEE!!! Only attempt the mod if you understand this and are willing to risk damaging your board since any voltage above stock can damage the voltage regulator and/or northbridge(and video card in one case). PROCEED AT YOUR OWN RISK!!!
I'd say a 1k Ohm variable resistor would be ideal for this mod.
hmzz dont want to wait till tomorrow... it would gave me about 1.97V vdd... hmmz. to much ?
I've found numerous 1k ohm resistors, all have various wattage ratings (ie 1/4W, etc..) I don't seem to be able to find any variable resistors on RadioShack.com however..
Get this one from rat shack:
http://www.radioshack.com/product.as...5Fid=271%2D342
This is basically like the one I am using, get a cheap multimeter while you are there to measure resistance or ohms to adjust before installing. Use one of the outer pins an middle pin. This is a trimmer pot.
The Vdd(chipset) mod described in this thread will VOID YOUR WARRANTEE!!! Only attempt the mod if you understand this and are willing to risk damaging your board since any voltage above stock can damage the voltage regulator and/or northbridge(and video card in one case). PROCEED AT YOUR OWN RISK!!!
This was in an email from someone named Arz. I just measured it and it seems to be correct. I measure without a resistor and then with and both measurement agreed with MBM.Quote:
Secondly, to the measuring of VDD, it appears to be possible from coil called L25 near the 3037, to be precise, from the leg that is next to the two condensators.
Everybody :toast: Arz! ;)
Ok, I just picked up a 1k-Ohm 15-Turn Cermet Pot. Now, how do I exactly go about adjusting this? I understand I use the adjustment screw, but how far do I turn it initially, and when adjusting, do I do it while the PC is on and watch my VDD, or do I shutdown, make adjustment, then turn back on?
Also, which pin on the pot is ground?
Center pin, if theres 3 pins.
Solder on 2 wires, to center and one other, and then measure the resistance between the wires. Turn to max resistance and install. I would suggest adjusting in realtime so you can see the affects.. Just go slow 8-)
We need a vdimm mod.. 8-)
Someone should do this to their NF7-S? 8-)
Anyone know of an online guide to soldering, yeah I realize thats a lame question but of all the times I have tried soldering I have really sucked at it. But with all these sweet results I'm gonna want to do this! Good job on all the work you guys have done! Thanks
hello and happy new year !Quote:
Originally posted by Caper
Thanks for the great info :)
With this modification, are you able to run higher fsb than before?
no gain for me in synchro mode.
i need to do the v-ddr mod .
but, i have a strange prob with my 8rda+, the monitor turn off with 204fsb (in 3D) (agp set to 66,and agp 8x disabled) . and when i use 2.1v and 2600mhz the monitor turn off when i load windows.(no prob with 2.05v to load windows at 2600mhz). when i ventilate the mosfets i can use 2.075v, 2.05v without ventilate the mosfet.
with my old 1600+ , i have no problem with 2.2v and 1900mhz.
it' s not the psu, i' have trying two psu (ttgi 500ss and antec 480w) same prob.
i ' ll buy an second 8rda+ ,perhaps