Hehe i know. I was just trying to be funny :)
Printable View
Hehe i know. I was just trying to be funny :)
for the VTT mod where can i put my multimeter set to ohms to know that the trace is already cut or not?
Wish I was in So Cal right now :/Quote:
Originally posted by CATCH22ATPLAY
Hehe i know. I was just trying to be funny :)
Did the VDimm mod some days ago, works perfect. But what´s the highest voltage i should use for benching, i don´t want to fry my mem ;)
BH5 ? 3.5V is OK :DQuote:
Originally posted by cold_ice
Did the VDimm mod some days ago, works perfect. But what voltage should i use for benching, i don´t want to fry my mem ;)
Yes Twinmos Ram with B5-Chips
They do 240 2/2/2/5 @ 3,15v :)
Put your leads from upper right mosfets lower leg to left pad of MC50. Should read 500k ohms to 3 meg ohms. You can scratch that trace a bit to make doubly sure. I just showed cutting it so everyone could understand. I usually end up scraping a 1/16" gap just to be safe.Quote:
Originally posted by enzoR
for the VTT mod where can i put my multimeter set to ohms to know that the trace is already cut or not?
Just did the VTT modQuote:
Originally posted by CATCH22ATPLAY
Put your leads from upper right mosfets lower leg to left pad of MC50. Should read 500k ohms to 3 meg ohms. You can scratch that trace a bit to make doubly sure. I just showed cutting it so everyone could understand. I usually end up scraping a 1/16" gap just to be safe.
With my ultra precise meter i had 2ohms before and 13Meg ohms after track cutting
VTT is synchronized with my modded VDD now.
BTW don't look into the BIOS reading... use the mosfet:toast:
Fellas,
I'm gonna need to do this mod, but on the IS7. I can have the original 0ohm res. replaced by another SMD res. of my choice, done by a pro w/ pro tools. Question: what value res. would I need to make the 2.5V bios-setting 2.8V (+0.3V)? This way the board would be maxed at 2.8V+0.3=3.1V. After the mod is done, I'll edit the values mentioned in the bios to mirror the new vdimm volts (ranging from 2.8...3.1V), and make the lowest (2.8V) default.
In fact, I really wanna be able to give it more then 3.1V at max, but it's the minimal vdimm that bothers me with a fixed resistor. 2.8V seems to me like a save lowest value every RAM should be able to handle, I don't wanna up it much more.
Oh, and as we're talking IS7 instead of IC7 here, I'll hand you guys a close-up of the vdimm section of my board. The R50 them IC7's seem to have is not present on my board, but the component layout seems the same. Is it R567 on my board? Could anyone plz circle the res. I need to replace and mail it to me? (PM)
Kinda hard to do without me ohming it out. I'd hate to say it's Rxxx and fry your stuff. I say just use a needle probe for your multimeter. Then check the volts on them resistors. Look for the one that matches your VDD volts and more than likely that's the one. For VTT do the same. You can aplly VDD and VTT mod almost the exact same as we do for the IC7 and max3. Don't fry anything checking volts and good luck dude.
Catch22atplay,
I might as well try to sell this IS7 and get an AI7 instead. Pretty much exactly the same board, but with high Vdimm's. Won't cost me much and there's no risks involved. Then again, this IS7 is good for at least 300FSB stable (didn't dare go higher on air), and there's no way to tell if the replacement AI7 would be as good.
I wonder if the Albatron 875 mobo will be decent. I wonder when it'll hit the shelves. I had an IS7 and got rid of it. 865 chipset was just too slow for me. But that AI7 looks kinda sweet.
I wonder too what's taking Albatron so long... And you're right about the i865. At stock speeds it's marvelous (w/ PAT hack), but beyond 250FSB many wish they'd bought a decent 875. Problem is, if I go 875 now I'm pretty much stuck with an IC7-Max3 or P4C800, and both would need at least a Vdimm mod. The AI7 can do 3.2 without any Vmods. Then there's the PAT issue the AI7 looses at >250FSB. Not that much of a problem to me, as it's pretty much mandatory to use async (read: PAT-less) mem anyway with a well-cooled 2.4C ;)
umm.... Vdimm mod aint that bad. to go over 3.2 you will also need one. besides, it makes things much more fun.
True, but...
I imagine I could have a lot more fun with a board able to do 3.2V at stock then with one that's limited at only 2.8V. Kind of a tough choice, 'cause if I do need more then 3.2V in the future I'd be better off with an Asus (way easier Vdimm mod).
How big are the odds I'm gonna need more then 3.2V anyway? A Vmod on AI7 wouldn't do that much good, just 3.3 at max. (Unless the PSU is also being fiddled with)
I've tried 3 865 chipset mobos. @ of them were Albatrons. The Albatrons were supposed to do 300fsb+ easily. The only mobos be it 865 or 875 chipset that i could get to 300fsb+ was 2 Abit IC7's and a IC7max3. All them of them stock right out of the box. I don't quite understand the PATless above 250 you're talking about. Unless you were referring to just the 865 chipset mobos. I have no problem using pat above 250 on my IC7's. Have to volt mod em for that though. And yes there is a limit somewhere but it like 295 or so. :)
Catch22atplay:
"...I don't quite understand the PATless above 250 you're talking about. Unless you were referring to just the 865 chipset mobos."
I was: "Then there's the PAT issue the AI7 looses at >250FSB."
I've had three 875 boards, none of them would do 300FSB out the box. First one that did was this IS7 I have now.
My IS7 only does 285fsb out of the box, but I would like to do a vnorth mod. On a cold start my board likes to turn off the first few times and it's extremely annoying, hopefully more vnorth would help that.
Quote:
Originally posted by Miles_Teg
Fellas,
I'm gonna need to do this mod, but on the IS7. I can have the original 0ohm res. replaced by another SMD res. of my choice, done by a pro w/ pro tools. Question: what value res. would I need to make the 2.5V bios-setting 2.8V (+0.3V)? This way the board would be maxed at 2.8V+0.3=3.1V. After the mod is done, I'll edit the values mentioned in the bios to mirror the new vdimm volts (ranging from 2.8...3.1V), and make the lowest (2.8V) default.
In fact, I really wanna be able to give it more then 3.1V at max, but it's the minimal vdimm that bothers me with a fixed resistor. 2.8V seems to me like a save lowest value every RAM should be able to handle, I don't wanna up it much more.
Oh, and as we're talking IS7 instead of IC7 here, I'll hand you guys a close-up of the vdimm section of my board. The R50 them IC7's seem to have is not present on my board, but the component layout seems the same. Is it R567 on my board? Could anyone plz circle the res. I need to replace and mail it to me? (PM)
http://www.malvescorner.com/is7.htm
Just saw this
Hi guys
Which of these is better for vdimm?
first
second
http://www.xtremesystems.org/forums/...?postid=281774
or thirth
http://www.xtremesystems.org/forums/...?postid=301736
Thks
I prefer the third one
second. lets me go all the way up to 3.25 on a 3.3rail at 3.32v. its because the resistance is changed to the proper ratio every time instead of it being fixed at 10 ohm, and witht he second, no need for resistor!! much simpler
Could you please edit your post and delete the link to the picture on my site.Quote:
Originally posted by EnZiMa
Hi guys
Which of these is better for vdimm?
Thks
Link to the page, not the pic. Thank you.
Malves on your mod why are you using all three legs of the potentio meter?
Isnt it possible to simply solder a 200 ohm vr to the place where one removed the R50 resistor?
So pin 1 to the left pad and pin2 ( ground ) to the right pad ?
basically I want to miss out soldering on the MC147 resistor !
Im using an is7-e but im not sure which resistor is the r50 resistor. Could help me figure out which one it is?