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OCP enables more current to "flow through" the mosfets... to get to the cpu. That definitely has nothing to do with the over voltage protection.Quote:
Originally Posted by stealth17
I could do 2.24V for benching, and was able to use 2.15V for 24/7. Good cooling recommended ;)
so over 1.925 could be unstable because i need ocp mod?Quote:
Originally Posted by SAE
heres some pics of my cooling. you can see the 80mm fan blowing on the mosfets and the vdd mosfet hs and the vdimm hs and the vcore hs.
i also cooled that lil black chip on the end of the agp slot and the sb vdd. anything else ganna gain me stablilty with cooling? nothing around the cpu socket is cooled really and i could really find any other hot chips too cool...
thanks
Hey stealth...
Watch this for cooling ;)
http://www.xtremesystems.org/forums/...chmentid=14192
There's the vdd mod missing though... but it's there now :D
i really dont think its cooling though for me...none of my chips are running above 36c my mosfets are running 31.5 and my sb vdd is 30.5Quote:
Originally Posted by SAE
ics are all pretty cool too
i have 80mm's just laying all over this thing :p:
so should i try that OCP then? fixed or variable of what size?
thanks
EDIT: why is it that everytime i try to flash to evoluses (sp?) bios it fails? ive tryed bot 5-5 and 4-19 and they lock in awdflash and in winflash i just reboot to the 4th LED on and the rest off....
same problem with oscarwu's work...havent had any of his work or any of evolus's work...bad board?
Anyone hosting Hellfire #3? I've "lost" my BIOS collection for the DFI's and hellfire.enclavenet is 404 for me.
Quote:
Originally Posted by Kobalt
bah read the model # wrong, i was thinking of a nice yamaha 110x2 reciever that pretty much kills every other stereo reciever near its price.
Quote:
Originally Posted by sjohnson
i found a link for it by searching on dfi-street, but then again flashing it killed my bios :). back to the nf7....
I'm pretty sure this is itQuote:
Originally Posted by sjohnson
http://www.tacofox.net/temp/N24ID619-3EG-REV3.BIN
Quote:
Originally Posted by stealth17
Mate, the sb vdd gave me nothing but problems. As it did for LORD. I don't recommend it.
Did ya see the smaller sinks between all those bigger ones on my board!? These are attached to the driver ICs that can get scorching hot. Cooling those may help some, I did not try without ocp though.
OCP is done replacing the smds through other smds or ordinary fixed metal film resistors. The resistors onboard are 2.2k, I'd say 3.3k to 4.7k should do you good ;)
The problem with the original 5-5 was, it could not stand a cmos clear with bh-5 inserted. You had to take it out replacing it with some stuff able to do cas3.
@ Kobalt, dfi-street links point back to hellfire.enclavenet. Hopefully the downage is temporary. Spare BIOS is critical for flashing, glad I have an extra chip.
@ taco_fox, I'll try that link. My CD with nearly all the BIOS' got stepped on and broken. Thanks!
got my pots in today, tommorow will be interesting :)
btw digikey is awesome, 3 day delivery on a 6 day shipping polocy.
sbvdd mod you talking about? i was talking about cooling it...i dont want to do the mod unless i have to...Quote:
Originally Posted by SAE
yeh those little ICs are cool as of now...maybe afer OCP they will be hot... ill sink em up :)
higher or lower value better fixed resistor? or just either will do the same?
oh...well i dont have anything but bh-6 and it wount do cas 3 so i guess i can use 5-5?
Quote:
Originally Posted by stealth17
Yep, been talking about SB vdd mod, as I thought you also did...
Lower value=lower droop, but it gets more dangerous. The closer you come to 0 ohms the more danger there is. It can damage your board's circuits (mosfets, ics and so on) heavily. So don't let it get 0 ohms!
It's equal if you're using fixed or pot for droop, but you should just change its value in off-mode (no power I mean ;) ).
BH-6 acts equal as BH-5 cause it's the same die. So don't experiment with 5-5 unless you've got some cas3-capable ram like samsung, hynix, Infineon etc.
so i want max resistance on these things before i do the mods right?
I just readed whole this thread. I have some comments and few simple questions ;)
SAE - more pics of your setup won't hurt, so far I see only 3x posted the mobo shoot ;) BTW, most of your cooper heatsinks have got find very close to be any effective - unless there is a VERY strong CFM trought them ;) Im somewhat disapointed that such badly cooled mobo could get so high, you are extremly lucky ;)
Most of the unstability many users getting when using prime95 torture test is obviously related to overheating of the mosfets and nothing else ;)
Will be OCP mod necessary to me, when I plan reaching 225x12 - 2700Mhz with 1.850Vcore? (it works for me, but just for about 40min of 100% load, then it hang - cooling need, I have fanless case)
I planing (to my machine remain SILENT) watercool my mosfets, like this:
http://www.xtremesystems.org/forums/...ad.php?t=49991
...anyone tried it already before? Results? Comments?
I would also cool the vdimm mosfets, as for 225Mhz 2-2-2-11 my Mushkin Hi-Perf rams insist on no more that 3.2V and they are 2x512, so... :( I need, tough, some measurments, so maybe someone can help me, especially with dead board or when just modding it? :rolleyes: More infos there:
http://www.xtremesystems.org/forums/...ad.php?t=49991
And finally, pictures of my machine is available there:
http://ax2.old-cans.com/galerie.php?...8&c=8&d=1&v=v2 (3 pages of them)
...and from misc. experiments there:
http://ax2.old-cans.com/galerie.php?...ppens&d=1&v=v2
...as well as there are plenty links and infos in my sig config link ;)
My "overclocking" is not worth mention. I run at 200x13 1.800Vcore AXP-M 2600+ right now and it's stable for about 4-6h of 100% load, then it freeze no matter that big heatsinks on the CPU mosfets and even not much helping the heatpipe I stick to the heatsink, as you can see on my pictures ;)
225Mhz always before five my strange troubles. Even the machine is prime95 stable, using keyboard cause strange clicks in audio sometimes, when machine are under heawy load. (folding + 20IE windows + winapm + realplayer plaing clip + typing on keaboard = clicks in audio) Using SBAudigy2zs. It was never resolved ever, I hijacked thread about it on DFI forum, where even guys like tictac, hellfire, unwackme and SAE contributed, but never any of the suggested tweaks (AGP bus/controler latency, PCI latency, P2P-EXT, CPU disconnect, additional grouding of SBAudigy2zs and such) helped me. I still believe that I make it working when I adequately cool the dimms + SB.
Ideas and sugestions and comments always welcome ;)
I keep ou guys posted, when I was able to move on with the heasting for dimm mosfets (+ their voltage regulator + SB) ;)
But now - in all the whole tread I missing 2 thing.
1) link for a L12 mod ;)
2) battery trick to get up to 4.3V dimm voltage w/o any mod
...this one was presented by RaydenX on OCW forum. Basicaly when you set any voltage for rams in bios W/O the battery being in mobo (ten restart and power off + get the battery back to mobo, power on and...), the resulting voltage is +1V ;) :D Use it with extreme care, tough. RaydenX got it working stable for 2.6 - 3.6V and 260Mhz. 2x256MB only, tough...
When you se the voltage in bios again with the battery present, it will get to the normal value. In bios it of course always show 2.6V (for example), but deliver 3.6V, when set w/o battery.
And at least but not least of me in this thread - anyone tried the new beta bios from DFI? It is directly targeted to 200Mhz FSB CPUs:
http://www.dfi.com.tw/Upload/BIOS/N24LDB24.exe
DFI ""beta bios"" for 200 default buss cpus...
IMPORTANT NOTICE :
The BIOS and Drivers in this section are still under evaluation. Please be advised that warranty will be voided for any damages caused by these BIOS/Drivers on your system and DFI is not liable for such damages. If you are looking for the latest released BIOS/Drivers, please visit our DOWNLOAD site to obtain the latest BIOS/Drivers. :stick:
Yep, when using pots, of course :DQuote:
Originally Posted by Revv23
I used a fixed 4.75k for vdroop, and 4 5.15k smds for ocp ;)
@trodas
trodas, my man :D You are posting more a man can read :lol: I have to go for a break before I finish reading.
P.S. Cooling is great, I have an 80mm fan there pointing to this area, and it's warm at 2.24V. Just try that voltage, and tell me, my cooling's bad ;) :p:
P.P.S. I had three boards modded the same way like my current one... every single one could get these 2.24V.
@trodas, that seems a TON of overkill if you only want 225mhz, my board did that stock.
at SAE, thanks, i have some 3.3k resistors for the OCP/Vdroop, but im very worried about my soldering skill (getting the SMD's of, and the fat legged resistors onto that spot without much room to work with...) any tips before i kill my infinity? :shrug:
can i use leads on the OCP mod? as that would probably make things easier, also, how much did the Vagp mod do? i just got my NB-1 northy cooler in so Vdd is getting it and my iron is heating up for the vdimm now, but im wondering if Vagp is worth the work...
ok so just finished the vdimm mod, not to hard only i accidentally took off the smd that you have to solder too, scared me bad, i think its back on now, testing now, but i hope it isnt life threatening if its off :(
anyways, testing with mod off now, i used Hipro's jumper trick for my 200k pot... if she runs ok, ill plug her in and let it fly...
what should i have Vdimm in bios set too when i turn on the mod?
ok got her up and running, its alive yay :)
measured 3.37 with mod off 3.3 set in bios.
once again, what should my bios vdimm be set too, does it even matter??
update, just plugged it in with vdimm set @ 3.3v in bios. board reads 3.4, which is actually 3.5 according to the mosfet.
at 3.2 ram = 3.4, 3.1= 3.3 etc...
very nice, this is with 200k pot at max resistance too, i doubt ill need more then 3.5 as the board will probably top out before the ram heh.
Great, the mod worked for ya :thumbsup:
The ocp is kinda harder! You have to move the soldering iron in very limited spaces, I am using two irons to unsolder smds btw. Otherwise you'd damage one ceramic edge of the smd resistor making it very hard to re-solder it later.
Then put some solder onto the onboard solder pads in case you wanna attach some ordinary resistors there. For SMDs that should not be nescessary. Just flaten out the solder on the pads, then put the new smd there and hold it down inplace. Now heating up both sides (the solder there of course) should make the smd stick there. Check for contact with a DMM in resistance mode. If there's any, you will be fine, if there's none, check what side has no contact and resolder it with again a lil pressure to the lose side.
That's it, do that with each of these 4 smds! :D
Good luck, and be careful, I persoanlly don't like the ordinary resistors, hard to solder, and easy to break, the smds are flat and not much harder to solder.
well damnit where does one get SMD's?
i think ill hold off on the OCP/vcore/ vdroop for now, its too scary.
But, i am wondering how effective the Vagp was, is it worth the work?
im working on Vdd right now hehe.
VAGP mod is nothing to consider... I never heard either of such a mod (for that board) or of the necessity of it. :confused:
The SMDs you can take off of every dead mainboard, vid card etc. ;)
oh lol, well i have tons and tons of SMD's then :p
as for vagp, its right in the first page of this thread lol:
http://upl.silentwhisper.net/uplfold...vdimmmodds.jpg
VAGP in this pic is no mod, but how to measure the actual real voltage. :D
oh lol, you are right sir, good thing i didnt try that one haha
heres my board all moded up, i decided to skip Vcore for now, and just see how far i get on these two, if i feel that vcore will help ill do it, i figured out how to unsolder those tiny SMD's with just one soldering iron on my dead NF7-S2 so i can do OCP if i have too.
http://home.comcast.net/~revv23/Christmas_2004_001.jpg
note how i mounted a jumper on the pot so as to make the mod removable without soldering, jumper off=mod off... big props to hipro5 for that idea.
http://home.comcast.net/~revv23/Christmas_2004_003.jpg
Vdd
http://home.comcast.net/~revv23/Christmas_2004_005.jpg
board cooling (not epoxied yet) you can also see my BH-5 cooling project, though thats not finished either, as you can probably tell... a few sinks had trouble sticking.
http://home.comcast.net/~revv23/Christmas_2004_004.jpg
Vdimm, you can see how i pulled off the SMD with my iron :slap: but luckily i was able to get it back down :cool: ... not bad for my first actuall vmod if i do say so myself. (not counting easy 9800pro vmod)
http://home.comcast.net/~revv23/Christmas_2004_007.jpg
cpu fet cooling up close
more board shots:
http://home.comcast.net/~revv23/Christmas_2004_006.jpg
http://home.comcast.net/~revv23/Christmas_2004_008.jpg