th7II stable fsb limit

flapperhead · Feb 9, 2003

i normally run my 1.6a @ 2400 150 fsb x 4 mem multiplier which gives me pc 1200. or 2720 170 fsb x 3 mem mult. which gives me pc 1020. I always assumed the 2720 was my cpu's limit, however there is always the possibility that my mb's fsb is crappin out at anything over 170 mhz. Is my assumption that 170mhz and above, say to 185-190 is reasonable with this mb?

Frankie · Feb 10, 2003

What kind of memory do you have? If you have 4 pieces of rimm's, it will lower your ability to rise fsb. THt-II works better with two rimm's.

I think your mobo is slowing you dowm. Asus P4B-533 is much better to overclock.

flapperhead · Feb 10, 2003

ive got 2 128 sticks of 1066 samsung. it maxes out at about 1220-1240 @2.8 v. which aint bad

jdmcnudgent · Feb 10, 2003

your doing pretty good, condidering that many peeps cant get 1066 to work on that board.

flapperhead · Feb 10, 2003

yep never had a problem since day one. guess i got lucky

Logger · Feb 10, 2003

To get back to the original question. It seems to me that the board will work right up to the highest fsb setting in the bios as long as all the other stuff is within reasonable limits pci agp mem.
I may be wrong.

flapperhead · Feb 10, 2003

the highest fsb freq is 250mhz which i doubt it will reach. however somewhere between 18-200 seems reasonable

batboy · Feb 10, 2003

As much as I like the TH7-II, lots of folks have trouble (including me) at FSB above 155 FSB. Sounds like you did get lucky.

flapperhead · Feb 11, 2003

then maybe the mb is failing @2720 and not the cpu

waja · Feb 21, 2003

I'm pretty much stuck at 143Mhz FSB. I have the AGPCLK set at 4/2.
I think that some of the problems that peeps have is when the FSB and AGP/PCI bus are set at mulitpliers that are for lack of a better term incompatible.
If I set my system at 144Mhz FSB and the AGPCLK to Fixed, I get random lockups in RTCW. I don't think this is as much of a problem with 144Mhz FSB as it is with using the Fixed setting and 144Mhz FSB at the same time.
I haven't spent the time to see what combinations will work better than others as I only have the PC1066 memory and don't want to lock up the BIOS or cause something that will require me to have to search out PC800.

When SIS and PC1200 become available, I will probably look for an upgrade. I'm hoping for an alternative to the SI7 as Abit's lack of support for the TH7-II sucks big time.

CrazyP · Feb 22, 2003

well I could only boot to 158 FSB with my pc800 @ 3X but using the abit FSB modifier, I can use better agp/pci dividers that allowed me to up it to 165 FSB. give that a try

Diablo21ST · Feb 24, 2003

flapperhead said:
ive got 2 128 sticks of 1066 samsung. it maxes out at about 1220-1240 @2.8 v. which aint bad

Did you change rdram clock gener.? Or you just set it @ 4x ?

flapperhead · Feb 25, 2003

yeah its maxed out 533 clockgens vmem mod etc.

Diablo21ST · Feb 26, 2003

How you do Vmem mod? Can you show me please!!

Frankie · Feb 26, 2003

batboy said:
As much as I like the TH7-II, lots of folks have trouble (including me) at FSB above 155 FSB. Sounds like you did get lucky.

Same here. Anything over that is like hitting the brick wall

flapperhead · Feb 26, 2003

heres the link http://overclockage.50megs.com/cgi-bin/i/th7iiramvoltmod.jpg

Diablo21ST · Feb 26, 2003

Thanks for big help!

RotatingFan · Mar 2, 2003

I'm maxed out @ 170Mhz fsb 3x (140Mhz 4x) with 2 sticks of 64MB pc800 and 2 sticks of 128MB pc800.

I have a vmem mod done, and it hardly helps.
You wil be better off doing a vcore mod and, if you can, a vchipset mod.

maxwedge · Mar 3, 2003

I just got a new 2.4b for my TH7II guy's and look at my sig.

Running pc800 at 3x with original clock generators. A chip that dosn't need much voltage is good for this board.

flapperhead · Mar 3, 2003

im gettin depressed ,i gotta 1.8a c1 that only runs to 2.7 a th7ll modded out to the max,but the damn pc1066 will only clock stable to about 140 fsb. then u guys tell me how fast your stock stuff runs. i feel like banging my noggin against the wall.....lol

th7II stable fsb limit

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