A or B P4 chip best in TH7-11 850

[Maninblack]

I am considering the Abit, TH7-1 board , 2 x 256 Pc800 rimms with a 2.4 chip.
Sure I would like to overclock it some.

Correct me if Im wrong.

A 2.4A chip runs at 100 mhz FSB on a 24 multiplier, P4 multipliers are locked?

A A 2.4B chip runs at 133 mhz FSB on a 18 multiplier.

However in the TH7-11 board is running the FSB at 133 a possibility? Or is this running the board too Hig just to get the 'B' chip to run as its designed let alone overclock it, I understand the memory can be run in spec at 133 fsb on the 3x setting, but surely the 'A' chip has a better chance of clocking and being more stable on THIS 850 board?

Can someone tell me where I have gone astray when people suggest the 'B' 533 chips may clock better in the 850 boards than the 'A' versions?

I know the asus 850e is an option now I see some 1066 rimms available, but I see many a happy chappy on the TH7-11, just wondered which 2.4 chip to pair with it and why?
Cheers

[jdmcnudgent]

you will have better luck with the 2.4b chip, with the 18x multiplier.:D

[Maninblack]

How will I have more luck?. To run the 18 multiplier at 133 to get 2400Mhz, wont the system be clocked somewhat already and not have much more overhead to go above 133?

[pRS317]

don't waste your money buying a 2.4. you won't get much of an oc out of it to warrent the cost $383 vs $137 (1.6a) for an extra few hundred mhz is not a wise buy. i'm running my 1.6 @ 2.52 and saved nearly $250 from not buying the 2.4. i'll be using that $ for next year's upgrade to 64bit. most ppl hit 2.4 with air cooling.

also, the pc800 doesn't oc very well from what i've been reading...especially if the bus is already 133. the pc1066 will do better with oc'ing, but the cost is quite a bit more than ddr ($256 for 2-256 meg sticks vs $88 for 1-512 meg stick of pc2700). so i'd say it's better to go ddr and bank the extra cash for next year.

2.4a oc'ed to 2.9 + 512mb pc1066 = $639
1.6a oc'ed to 2.4 + 512mb pc2700 = $225