yep, pictures are down...
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yep, pictures are down...
Are we gonna get the pictures back because I cant see myself doing this mod without pictures as a guide :(
could someone please draw an electrical schematic of this mod? because initial pictures are down i dont really understand whats going on. i tried PC-Ice's guide but ended up with 3.55V max on 3.3V line - anything further and it backed down to 3.3V. used 10kohm pot and 47ohm resistor.
PSU - 420W Enlight
You should be happy to get 3.55v, because normally, there is a 5% overvoltage protection beyond which the psu shuts down. (3.46v should be the max)
Here is a electrical schematic. Hope this can be uploaded so you can see.
Edit: sorry, cannot upload schematic.
Send it to me via e-mail, I can upload it
Various PSUs have various OVPs. Also I see that better quality PSU is, higher OVP is. That's why a lot of Antec/Enermax PSUs
can pump above ~3.7-3.8V
I think in those cases where higher than 3.46v is obtained, thise psu must have a higher overvoltage protection which may good or bad.
Your profile does not allow email to you.
Here is another try to upload:
Now I see this pic
BTW, this fixed resistor mustn't be 33 to 47ohm, I have VR set to 100ohm and mod works fine
Damn, looks that no one knows how to modify OVP :( I might to try see track of sense wire on
PSU's PCB, maybe I will find something interesting.. I must pump to 4.0, it's very nice voltage.. ;)
well, my PSU doesnt shout down. if i turn VR after i reach 3.55V it just jumps back 3.28V. im clueless.
Altho I did not design the mod, but my understanding of electronic circuit tells me that fixed resistor and the VR acts as a voltage divider, sending a lower sense wire voltage back to the psu which causes it to up the 3.3v line voltage, hense cheating the ovp as well (I maybe all wrong here, but this is my educated guess. Please correct me if I am wrong, HellFire).
I set the sense wire mod to give me 3.46v and when I plug it into my DFI nf3 UT 250GB board, the board does not boot. I have to lower it to 3.4v and can only get 3.3 vdimm in bios.
This is a dead issue for me. I can only oc my 2x512 Muskin Blue to 230@ 1:1, 2,2,2,6,1T at 3.2vdimm. I think my cpu is holding me back. So, I don't think higher vdimm will help me at all. Got to wait for upgrade to DFI NF4 board and better cpu with better mem controller.
It's reasonable, but tell me, if you modify voltage on sense wire and modify OVP, then what's shutting PSU?Quote:
Originally Posted by e268
Did you try to increase voltage in OS? I've heard somewhere that a high voltage on +3.3V rail can makeQuote:
I set the sense wire mod to give me 3.46v and when I plug it into my DFI nf3 UT 250GB board, the board does not boot. I have to lower it to 3.4v and can only get 3.3 vdimm in bios.
PC not bootable, but increasing in OS works
Have not heard of OS voltage.
OS isn't a voltage, nor program related with voltages, it's a system software (Windows, Linux etc.). What I'm trying
to tell, is that if you set +3.3V rail to, for example, 3.6V, your computer can not boot. If you lower to 3.3V, it will
boot. If you're in Windows, then you can increase to 3.6V and it will work. Just at startup 3.6V is too high, at system
software it's fine.
Why are the pictures all gone in the first post?!?!?!?!?!?!
Because their server has broken? ;)
Come on!!!! Put on the pictures at the first page! Or at least put them all in .rar or .zip so we can download them!
I read all this through carefully ... but then stumbled upon this .... I mod'ed to this as I actually liked the idea of the pots tie-wrapped to the bundle inside (heck ya need to be inside to measure voltage anyway).
but one way or the other, here are some pictures that also apply to that which has been lost here:
http://www.bleedinedge.com/forum/showthread.php?t=1021
got my problem solved - switched to 5kohm pot, 10k was a bit too much for fine-tuning. id way 2.5kohm would have been perfect for my PSU
Can this only be done on the 3.3v rail?
Cause I would like to raise the volts on my 12v rail, it's only 11.89 idle, and drops to 11.76 under load.....
You do the same to the 12v rail, as in the 3.3v rail. However, 11.76 is within the +/-5% range, I would not do it. My 12v line goes down to 11.64 on load.
I kinda made a mistake, I just measured again, and it's 11.63 constant under load, I turned on the Tornado fans and the Delta 120mm GHE, plus 2 more 80mm fans on the RAM, so I think under full load I am kinda a candidate to change it, but what I want is a digital readout in the front of the case, and the pot right next to it, so under load I can slightly up the voltage, because I am getting pretty unstable because of it, the ATX 2.0 specification only allows a deviation of 1%, I am getting 3%, it's probably also hampering my overclock, I just need a pin-out of the ATX connector, anyone have one?
hi all, my friend had the thread saved almost half a year ago on his PC, so he has the pics... I managed to get it on the server.. check them out if u wanna to http://public.carnet.hr/~ftoic
fackinlogins:
Thanx a lot man. I needed pics so much :D
u wlcm dude :)Quote:
Originally Posted by kiwi
I've uploaded the pictures from fackinlogins and changed the links, so the pictures in the first post should work now :)
okay, nice to hear.. anyway, just a Q: what happened with your pics? You got hacked or what? I wasn't on this site at least 4 months, and when I came back, there were no pics...