1333 FSB Mod, Confirmed To Be Working By Me.

[bassie]

and Vcc has worked for a lot of people, but the pentium d spec sheet i looked at suggests that Vtt is the 'correct' voltage to use.

Why do you use a pentium d data sheet? This mod is used for core 2 duo(quad) so whu dont you look at a core 2 duo(quad) data sheet?

And if i look at the c2d datasheet, this is what i see

FSB Frequency Select Signals (BSEL[2:0])
The BSEL[2:0] signals are used to select the frequency of the processor input clock(BCLK[1:0]). Table 17 defines the possible combinations of the signals and thefrequency associated with each combination. The required frequency is determined bythe processor, chipset, and clock synthesizer. All agents must operate at the samefrequency.The Intel Core2 Duo desktop processors E6850, E6750, E6550, and E6540 operate at1333 MHz (selected by the 333 MHz BCLK[2:0] frequency). The Intel Core2 Duo desktop processors E6700, E6600, E6420, E6400, E6320, and E6300 operate at 1066 MHz (selected by the 266 MHz BCLK[2:0] frequency). The Intel Core2 Extreme processor X6800 operates at a 1066 MHz FSB frequency (selected by a 266 MHz BCLK[1:0] frequency). The Intel Core2 Duo desktop processors E4500, E4400 and E4300 operate at a 800 MHz FSB frequency (selected by a 200 MHz BCLK[1:0]
frequency).

Nothing about vtt.

[ziddey]

either should work. it's relative voltage sense only

[ziddey]

I'm assuming that vtt is the proper way to do it then

[hollo]

sorry ziddey, i deleted a post ;D
bassey - i will test it as soon as i can borrow a multimeter by overvolting Vcc on my friend's pentium d 805, but the pentium d datasheet says the BSEL pads should be brought to Vtt, while the core 2 duo sheet says nothing, so i expect it will be Vtt.

[MaK2000]

Are there any mods to raise the multi for E63? I imagine they would work for any C2D.

[ziddey]

no way jose

[ziddey]

i just did the vtt method and works fine on dfi p965-s.

[hollo]

sweet. ok i just thought of another little problem... check out post #12 here http://www.xtremesystems.org/forums/...d.php?t=111510
the pin mod described shorts a BSEL H and a BSEL L to create two BSEL Ls. according to wikipedia an open-drain output should work like that (ie if you have a string of open-drain outputs on a single line then the voltage line will stay high until one of them is brought low, at which point the line will become low). but there have been quite a few mods done by shorting a BSEL L with a Vcc to bring them both high, some of which worked. they might have just worked 'despite' the ground in the circuit because the Vcc pins overwhelmed the small circuit, since they're power supply pads, while the BSEL pads are for a low current sensor circuit. perhaps what needs to be done to bring a BSEL from L to H 'properly' is to insulate the pad, then paint over it with conductive paint, so that there's no ground/BSEL L in the circuit. i think some people have already picked up on this idea from what i read in other threads. does anyone who had no luck the first time feel like trying it again with an insulator + Vtt ;D?

[andyddr]

I am trying but not getting it to work on my x3220 anyone have success with this one?

So has anyone tried yet?

[Brother Esau]

I will be doing the BSEL Mod on my Q6600 when my conductive Ink pen gets here on the 30th

[|-Goku-|]

I recently tested this mod on my E6600 about 2 weeks ago, and it worked perfectly, I am using a BFG Nforce 680i SLI board. I was able to OC to 3.6 on Air. I traded my processor in for a Q6600, and tried the mod and it wouldn't boot past POST, It would show that im running at 1333FSB, but it wouldn't go to look for any drives and such. I took the mod off and tried to OC it the normal way, It will not let me OC it to 1333 FSB, it will always restart when its about to load windows. I have tried upping the Voltage to 1.7 and it still does the same thing. I have a crappy power supply though, its a CoolerMaster 500watt. And it doesn't have the 8 pin connecter this board uses im only using 4 pins, is that the reason, I am not being able to boot right, cause the quad is trying to use alot more power then this Small PSU can handle. I in no way mean to hi-jack this thread. I just find it pointless to start a new one. If anyone could help that would be great.

Awsome Mod non the less good find.

[Ace-a-Rue]

does it post and then boot using default settings for everything in the bios?

[Nick04263]

I recently tested this mod on my E6600 about 2 weeks ago, and it worked perfectly, I am using a BFG Nforce 680i SLI board. I was able to OC to 3.6 on Air. I traded my processor in for a Q6600, and tried the mod and it wouldn't boot past POST, It would show that im running at 1333FSB, but it wouldn't go to look for any drives and such. I took the mod off and tried to OC it the normal way, It will not let me OC it to 1333 FSB, it will always restart when its about to load windows. I have tried upping the Voltage to 1.7 and it still does the same thing. I have a crappy power supply though, its a CoolerMaster 500watt. And it doesn't have the 8 pin connecter this board uses im only using 4 pins, is that the reason, I am not being able to boot right, cause the quad is trying to use alot more power then this Small PSU can handle. I in no way mean to hi-jack this thread. I just find it pointless to start a new one. If anyone could help that would be great.

Personally, I would get rid of that power supply and try a new one. I don't know anything about yours in particular but if you think it is poor then investing in a good one is just good insurance for all of your parts. Get a new one, try this all again and still if nothing, try a new motherboard. Of course it is up to you but this is what i would do.

[Ace-a-Rue]

I recently tested this mod on my E6600 about 2 weeks ago, and it worked perfectly, I am using a BFG Nforce 680i SLI board. I was able to OC to 3.6 on Air. I traded my processor in for a Q6600, and tried the mod and it wouldn't boot past POST, It would show that im running at 1333FSB, but it wouldn't go to look for any drives and such. I took the mod off and tried to OC it the normal way, It will not let me OC it to 1333 FSB, it will always restart when its about to load windows. I have tried upping the Voltage to 1.7 and it still does the same thing. I have a crappy power supply though, its a CoolerMaster 500watt. And it doesn't have the 8 pin connecter this board uses im only using 4 pins, is that the reason, I am not being able to boot right, cause the quad is trying to use alot more power then this Small PSU can handle. I in no way mean to hi-jack this thread. I just find it pointless to start a new one. If anyone could help that would be great.

Awsome Mod non the less good find.

don't jump on the bandwagon with a new PSU right away...there are a couple of things need to be looked at prior to doing that!

1st of all, i ran abit's QuadGT board with a Q6600 (overclocked) and my Antec 400W power supply that had just one 4 pin 12V ATX plug....

you need to verify that you have the correct bios installed to work with a Quad core...then you need to clear CMOS and take the battery out for about five minutes...make sure the 20 or 24 pin ATX power cord is unplugged...if this PSU has only a 20 pin ATX power cord then you might need a 20-to-24 pin adapter to make the board work correctly with Quad core.

that is it for now...we should probably move this to a new thread specifically for you...it is appropriate for your situation....this has nothing to do with the 1333 FSB mod.

[tormentor22]

I took the mod off and tried to OC it the normal way, It will not let me OC it to 1333 FSB, it will always restart when its about to load windows.

i dont think its a power problem since it can load the bios.
i had such a problem when i connected my friends HDD to my PC, the bios identified my friends HDD as being a master and so each time win was about to load it restarted, when i set my HDD to be the master through the bios win. started well.
yea i know its different but w i mean is that the problem is then not caused by ure system but by windows, since my friend had a P3 and i had a PD it was a major change for win when he found so much hardware change so that maybe ure problem too go back to original config, back up the files u need, overclock then reinstall windows that may help but i cant assure it

[|-Goku-|]

K Started a New Thread http://www.xtremesystems.org/forums/...d.php?t=154720

[phelan1777]

okay I just read through this thread and I am completely confused.........

Other then Kunaak trying a mod on his CPU and it working.

Does this apply for all qcore chips?

Has someone tried this in a EVGA 680I board?

What is the potential for the mod going wrong?

Has someone tried this on a QX6700?

I am willing to give it a go on my 680I and QX6700 & X6800

[Ace-a-Rue]

i am, one, not successful with my Q6600 getting to work at 1333 Mhz ...could have been my boards bios wasn't ready but i've given up on the idea since the IP35 Pro can give me high FSB without it...i've been up to 495 FSB stable at 7X.

[Hutch]

I've been trying to do this mod for a few days now but I can't find any conductive ink anywhere. I've tried radioshack, autozone, CVS, walgreens, and some hobby shop where these weirdos get off to friggen model planes/trains at. Next stop is Wal-mart where hopefully they have a rear window car defrost/defogger repair kit.

I've got one of those E6400's that absolutely brickwalls at 470mhz FSB. Tried 3 boards, fully modded every board, tried -15*C ambients on a decent water cooling setup and I can't break 470mhz FSB no matter what (6x, 7x, 8x multi too.)

E6400 L624A (but a B2 stepping chip...) on a TP35D2-A7, 2x512MB Ballistix PC8000, 7600GT, water cooled cpu only, 80mm rocket fans sitting on top of the board over everything (mosfets, ram, NB, SB ect ect.)

Is it possible to do the mod with AS5 instead of conductive ink? Only problem I see with it is that it takes forever for AS5 to dry (blow dryer could speed up the drying process?)

[pauldovi]

Anyone try this mod with a SLACR?

[VAdept]

I think I will give it a go when my G0 arrives, can let you know then.

[Ace-a-Rue]

I've been trying to do this mod for a few days now but I can't find any conductive ink anywhere. I've tried radioshack, autozone, CVS, walgreens, and some hobby shop where these weirdos get off to friggen model planes/trains at. Next stop is Wal-mart where hopefully they have a rear window car defrost/defogger repair kit.

Is it possible to do the mod with AS5 instead of conductive ink? Only problem I see with it is that it takes forever for AS5 to dry (blow dryer could speed up the drying process?)

it won't work with AS5..forget that one!

[Hutch]

Tried the mod the other night to no success. I'm gonna try later to make a better connection, the conductive pen was extremely watery at first.

[ChronoReverse]

Just tried the front page mod with my G0 Q6600. No effect in my Gigabyte GA-P35-DS3P =(

(and yes it's silver conductive ink not AS5 lol)

[baron_iv]

This worked perfectly on my MSI P6N Diamond board with the Q6600 (B3 stepping). It didn't give me any additional headroom for my overclock, still stuck at 2.73ghz on that POS board. On a happy note, the same CPU runs at 3.13ghz on my Asus P5K Deluxe.

You do get a 2-3% performance boost by having the 1333mhz bus vs 1066mhz, according to the review here:
http://www.xbitlabs.com/articles/cpu...duo-e6850.html

They show the identically clocked 1333mhz and 1066mhz CPUs and the 1333mhz wins in every benchmark by 1-4%. I really can't explain why, I mean there's a bit more bandwidth there, but we're not talking anything earth-shattering. You'd be better off to overclock everything to 1333mhz and get the benefit of lower latency and more bandwidth with your overclocked memory than just running the higher FSB alone. I guess to each his/her own though.