OC: FSB or multiplier ??

[GrandVizor]

Which one should I push to get better performance?

 

[human2k]

FSB of course. Low multiplyer with high FSB = performance up the arse.

 

[GrandVizor]

Is that mean that you need to push your FSB to the max then adjust the multiplier until it become stable?

 

[human2k]

start off with a multiplyer of like 10 or 11, and up your FSB gradually from 166FSB till you hit a wall. Make sure you have some high quality ram btw.

 

[ChampionAtTufshop]

to avoid the ram brick wall you may or may not hit, start by upping the mult and see how far the cpu can go with a voltage you are comfertable wit (same with temps)

then lower mult down to 10ish and jack up the fsb until its around where you had the cpu before with just the mult (remember, small steps)
if you hit a wall prematurely (its probably because of ram, depending on waht type and waht kind you have) up the vdimm as well

 

[DayLaPaul]

Find the highest mhz your CPU can handle by using a smaller FSB. Then find the highest FSB your system can handle by lowering multiplier. Finally, find a happy medium between the two that offers good stability and speed.

 

[Jeff7181]

Is it worth running the FSB at 200 if your RAM will only do 166?

 

[mjolnir2k]

BUT, what about throwing your AGP/PCI spec's out of whack by upping the FSB??

For instance:
I can "lock" my AGP/PCI to 66/33 when I am running 166FSB, but as I increase from 166FSB my AGP/PCI specs also increase.

Right now I am running 12.5 Multiplier x 170 FSB for 2.125Ghz, but that also means my AGP is 68mhz and my PCI is 34mhz.

Not sure how high I would want to push the AGP/PCI specs without cooking my video card or sound card.

SO, What do you do when you can't lock your AGP/PCI??

 

[al799cmt8]

I can go 11.0x198 FSB but I can't go 10.5x207. I think my RAM limits me to do this! I have Geil pc3200 ultra!

 

[GrandVizor]

The highest I can go is 10.5x198, @1.7v........If I increase FSB to 200, whenever I play 3D games, it crash......If I increase the multiplier, windows corrupt.......

BTW, I use 2x256 corsair xms 3500c2 platinum and my mobo is msi k7n2-l (cheapo)

 

[Jeff7181]

Originally posted by: mjolnir2k

SO, What do you do when you can't lock your AGP/PCI??

You deal with it and settle for the overclock you can get... or buy a new motherboard

 

[GrandVizor]

Originally posted by: Jeff7181

Originally posted by: mjolnir2k

SO, What do you do when you can't lock your AGP/PCI??

You deal with it and settle for the overclock you can get... or buy a new motherboard

LOL!!!!!

 

[Jeff7181]

It's true...

 

[jasonStouffer]

the NForce2 boards have the ability to lock the AGP & PCI frequencys no matter what FSB you are at... And I am pretty sure that they all do it automatically as default.

 

[ChampionAtTufshop]

Originally posted by: jasonStouffer
the NForce2 boards have the ability to lock the AGP & PCI frequencys no matter what FSB you are at... And I am pretty sure that they all do it automatically as default.

nah they lock pci by default at 33mhz but agp is selectable

 

[Naruto]

Usually highest performance is achieved by highest fsb. Highest overclock is usually by multiplier. But I would recommend a good balance of multiplier and fsb (but more toward the fsb).

For fsb - you need:
good mobo
good ram
lower multiplier if you need to
agp/pci lock
voltage settings of course

 

[Shimmishim]

Originally posted by: Naruto
Usually highest performance is achieved by highest fsb. Highest overclock is usually by multiplier. But I would recommend a good balance of multiplier and fsb (but more toward the fsb).

For fsb - you need:
good mobo
good ram
lower multiplier if you need to
agp/pci lock
voltage settings of course

this is not necessarily true...

i did a test thread a while ago about increasing your fsb while keeping the same clock speed...

i.e. 7.5 x 133 or 10 x 100

i found that if you are running pc3200 ram for instance....

i ran my processor at 2.4 ghz so i did

12 x 200
11.5 x 209
11 x 218

they are approximately close to 2.4 ghz...

but as you go higher and higher you have to relax your timings...
i went from 2-2-2-6 to 2-3-3-6 to 2-3-3-7

i found that in games... and other aps that the performance gain is VERY minimal...

the only way there is A LOT of gain is if you can keep the same timing as you up your fsb...

just something to remember

linky to my thread... it's a fun read!