Well, it does seem that even with the mods the FSB at bootup is still much more limited than it is in windows.
Well, it does seem that even with the mods the FSB at bootup is still much more limited than it is in windows.
Trust me, you just need the balls to shove 2.0Vcca+++ to the adapter and your set.:DQuote:
Originally Posted by bleagh
This is going to be my last screenie since my ram is about to crap out soon. I thought i was going to not boot at 244fsb and 1 after the other fsb I adjust from bios it constantly posted and wants to go for more. This is somewhere at 2.05Vcca. My multimeter could be reading wrong though:D It looks like theres a wall with the adapter and just need to be broken. Now all we need is to fill all that empty pad with right components and we might gain more than 200mhz more in clockspeed. Again thanks hipro5 for sharing your mods. :toast: :toast:
http://img482.imageshack.us/img482/8...led30oq.th.jpg
What the hell:D One more screenie. My max post:D 256fsb is a no go. But still this is impressive from 1.80Vcca 227fsb to 2.05Vcca++255fsb maximum post in windows. Damn I wish my cpu could do 2.7-2.8Ghz.:mad:
http://img393.imageshack.us/img393/1...led45fm.th.jpg
Does the Vcca voltage effect cpu temps?
Hi, may i know wat resistor value u use there? i tried the 3.1K ohms but not much difference for my celeron-m. thksQuote:
Originally Posted by AKURA
Fr@nk, It did not increase my cpu temps
rx8, I removed the stock resistor and soldered a trimmer instead. I am at 659Ohms atm. That will give you around 2Vcca++++. The 1.2K Ohms 1.82Vcca didn't do anything, it still did not let me boot at 228fsb with 10x multi. With above 2Vcca+++ I can boot at 255fsb in windows whenever I want to:D . As hipro5 said, use 533fsb jumper. This mod works and I'm soon to find out with the filtering caps:D Damn I want 2.7Ghz so bad:D :D
http://service.futuremark.com/compare?2k1=8877547
this weekend i'll replace the resistor to get the extra .02v vcca, hopefully it will help me.Quote:
Originally Posted by AKURA
Quote:
Originally Posted by AKURA
hippro5, could you please verify that 650ohms won't fry anything
And the magic 3.0Vcca:D :D :D :D :D
http://img36.imageshack.us/img36/817...led54zz.th.jpg
Had to use 5:4 since my ram was crapping out:) I think the vcca is being fed from the 991H mosfet from the adapter. It is the same kind you find around the vdimm from all asus mb. Let me play with this stuff for a week first and if anything burns I will let all of you know it's dangerous. But at the meantime I have gained almost doubled the fsb from where I couldn't boot. This mod indeed solves the fsb holes. It's the adapter after all.:D
Edit: Check the fsb on my 3Dmark01 score it's at 266 since it was booted. Now compare it to someone who used clockgen but will only show 201 booted fsb.
http://service.futuremark.com/compare?2k1=8877901
And for the finally:D 3.17Vcca and a whooping bootable 288fsb:banana:
http://img36.imageshack.us/img36/990...led60ya.th.jpg
http://service.futuremark.com/compare?2k1=8877926 :eek:
:) akura:toast:
holy crap dude! maybe i will get 2.9ghz stable after all... i'm DOING it this weekend. if it fries, let us know and i'll undo mine.Quote:
Originally Posted by AKURA
Yup,:D I think when hipro5 released the mod he couldn't believed it himself. It was insanely unbelievable:D Thanks bro, your the best:toast: The more vcca i fed to the adapter the more fsb i was able to boot and push more fsb from the bios then booted to windows. Probably around 3.2Vcca i'll be able to reach 300fsb bootable in and out of windows:) No clockgen or tweaker needed. Just pure raw bios tweaking:DQuote:
Originally Posted by cirthix
Give it a shot folks:toast:
Hey....be carefull with the VCCA mod M8.....:D :toast:
Don't rise it too high.....!.....SAFE MAX is the 2.15Volts and it DEPENTS on the CPU IF it "listens" to it or not.......Two of my Dothans could handle 2.85Volts (770), the 740 one could handle up to 2.4Volts and the 780ES I don't want to puss it higher that 1.83Volts coz it's a "golden chip" and I don't want anything bad happen to it - Although I didn't encode any problems at all EVEN at 2.85VCCA, only some lock ups into windows......Temp of the CPU is NOT rising at all coz we are talking about some mA of curent.....;)
Have fun and keep on.....:toast:
P.S. Feeding more than 2.15VCCA the CPU, better be under some kind of phase change so as to handle it better.....;)
Hipro5, Now I know what you meant when you said kick some green a$$:D When I posted at 266fsb i didn't know that my vcca was already at 2.85V:D I was wondering why my multimer doesnt read things since it was set to read at 2V and lower hehhehehe. Then once I had the perfect reading. I was like push it some more.:D My cpu seems to like the high fsb. I haven't tested max frequency yet. It's the only thing that's dissapointing to my chip. It maxes at 2.6Ghz and won't go any higher. No matter what voltage i give to it. As long as the mod doesnt take my golden P4C800-E board with it im safe and my crappy cpu as well:banana:Quote:
Originally Posted by hipro5
Btw, bro I will keep this setting as my 24/7. I will grab another adapter and cpu soon. This speed and power is addicting:D
P.S. Hipro5 wanna trade me your cpu hehehe. j/k m8
:toast:
I completely agree with this & join the comment. I would not rise it long term over 2V; ... you know, birds sing best before they die ... :cool:Quote:
Originally Posted by hipro5
Alright it looks like im gaining more bootable fsb and not just that also in frequency. As to before I could not bench anything higher than 2.6Ghz.
Specs:
PM 750 1.86
P4C800-E 53MG Droop modded Bios 1000.023
Asus CT-479 Vcca@3.17V
WD 160GB
ATi Radeon 9800 Pro
700W Zippy
Winxp SP2
Cas2-3-3-6-A-Infinite-15uSec-Turbo
Vcore: 1.45V
Vddr: 2.75V
Vagp: 1.70V
http://img35.imageshack.us/img35/893...led87qu.th.jpg
http://service.futuremark.com/compare?2k1=8878145
:toast:
So in understanding whats going on here, increasing VCCA (within reason :) ) allows you to both boot at a higher FSB and ALSO get even higher FSB within windows. FSB being the CPU -> NB and not CPU -> (NB) -> RAM. Therefore if I will gain nothing in my FSB if I'm running 1:1 as increasing my VCCA will not improve my RAM speed (unless it hasn't topped out yet)
Yes, I can boot to windows in and out at 297fsb:D I dont use clockgen or any tweaker just to get it to boot up. It's pure bios settings and crosses fingers if it post:D :D I dont get what your trying to say with the fsb. You either choose 1:1 if ram and cpu could get along with each other or 5:4 if your limited to ram frequencies Or lower your multi if your feeling lucky:) . Either way the mod did wonders for me. Also broke my voltage threshold and im now able to use any vcore i want from bios without getting reboots. I also gained a few cpu frequency from it. 2.6Ghz Before and 2.67Ghz After:DQuote:
Originally Posted by Johnny Bravo
i just talked to hippro5, he said 2.15v is safe enough on air, but you should use phase for higher. nice results, but you might want to back down a bitQuote:
Originally Posted by AKURA
Don't worry mate im only experimenting.:D So far from what I have observed from the mod is that only raise it if you're limited to fsb. A limit to which you are stable at e.g. 227 and no post at 228. Use only the limit to cpu/ram ratio 1:1 as it gives the best performance out of all. I will drop it down to around 2V later on. Since 3.17Vcca can now boot me up to 297.Quote:
Originally Posted by cirthix
But wait:D I finally made it to 2750 wich i thought was a crappy 750:D :banana: :banana:
http://img465.imageshack.us/img465/5...led99xg.th.jpg
And:D my NEW MAX Benchable cpu:banana:
http://img32.imageshack.us/img32/825...ed106hz.th.jpg
I'll play with it some more to see which settings give me the best all around performance
Thanks again hipro5:toast:
Quote:
Originally Posted by AKURA
dude, we have the EXACT same problem. i'm limited to 228fsb at boot and can clockgen to 231 (it hardlocks there). it's on a 730, so i don't have the higher multis to play with. the previous owner had it at 2.9g spi1m, so i might be able to pull 3ghz out of it, maybe even stable considering that he didnt have the hippro5 mods. it's VERY fsb limited though. with 6x multi, i can *sometimes* go above 231fsb without crashing... it might go an extra 3 or 8 fsb, but it's all luck.
i'm looking for 250-260fsb stable, what vcca did you need to achieve that? what resistance was your pot at? are you measuring the resistance of the pot when it's disconnected from the adapter?
is your pot connected in paralell with the on-board resistor or have you removed it?
Quote:
Originally Posted by cirthix
Try the mod with a trimmer so you are able to adjust each time it doesnt post as you increase the fsb:D Have a multimeter handy while adjusting and measure jumper pin2 for the vcca volts reading. It's what I did with mine. But first start with multi of 9. Whichever you prefer. I have the same fsb issue as you before. It's simply a wall with my cpu. Just learn to balance the resistance you will end up with. So you can work with high fsb enough for the cpu to post and do some stability test/benching etc. Start with 2.05Vcca and if you gain 2-4fsb and doesnt post again. Shut off your pc and adjust the trimmer. Rinse and repeat ti'll you finally reach a bootable 250fsb+++:D
e.g.
9x multi
234fsb===>Needs 1.85Vcca to post
238fsb====>Needs 1.90Vcca to post
243======>Needs 1.95Vcca to post
well I hope you get the idea:toast:
P4GD1 doesnt have multi options in bios :(. what voltage do you need for STABILITY at 250 fsb?Quote:
Originally Posted by AKURA
what resistance do you need (with the pot measured when it's disconnected from the board) for that vcca?
With my vcca mod i used a long wire with the trimmer.:D So the trimmer is actually in reach for me to measure even when it's connected to the adapter. I can still measure it's resistance. Start with 900ohm-800ohms. Right now i have it set to 680ohm which gives me 2.55Vcca.:)Quote:
Originally Posted by cirthix
Quote:
Originally Posted by AKURA
are you measuring the resistance of the trimmer by itself or the resistance of the trimmer when it's connected to the ct479?
Hmmm, If I read this right, it says your gonna run it 24/7. Y not put it to use while you sleep by letting it crunch rosetta for the XS Rosetta team. BTW, Hipro, have you changed all your d2ol rigs over to rosetta or you gave up crunching? Sorry for the OT.Quote:
Originally Posted by AKURA
OT/after the dissapointing stats reset at d2ol. I already made my way folding for team Xs and hadn't look back since/OT:DQuote:
Originally Posted by moddolicous