Is this mobo ok for overclocking a 8500? confused about FSB :(

[amdbuilder]

Hi I'm totally new to overclocking. I've heard it's very easy thesedays so I read the OC guide here which is very good but ended up frying my poor brain!

I am thinking of getting the E8500 and have read reviews saying it's excellent at overclocking.


On another thread roadrunner helpfully suggested:

"You need a 421FSB x9.5 to get 4.0 with the e8500. "

Um, so if I get a mobo that only goes to 1333 FSB I'm guessing this isn't enough (because for some reason everyone seems to divide by 4 so I'm guessing the real FSB of thsi board is 333!?)

So in that case I was thinking of this mobo:

Asrock P45TurboTwins2000, iP45, S 775, PCI-E 2.0 (x16), DDR2/DDR3 1333/1066, SATA II SATA RAID, ATX

and the specs are:

1. LGA 775 for Intel® Core™ 2 Extreme / Core™ 2 Quad / Core™ 2 Duo / Pentium® Dual Core / Celeron®, supporting Penryn Quad Core Yorkfield and Dual Core Wolfdale processors
2. All Solid Capacitor design (100% Japan-made high-quality Conductive Polymer Capacitors)
3. Intel® P45 + ICH10 Chipsets
4. Compatible with FSB2000/1600/1333/1066/800 MHz
5. Supports Dual Channel DDR3 1333/1066 (4 x DIMM slots) with max. capacity up to 8GB and Dual Channel DDR2 1066/800/667 (2 x DIMM slots) with max. capacity up to 4GB

So I'm guessing if I divide by four the 2000 becomes 500 FSB which is fast enough to cater for the required 421 FSB suggested.

But then what really confuses me is that expensive x38 chipsets which are supposedly able to OC the best only quote a FSB of 1333!

Why is this cheaper one able to do 2000?

Am I doing totally the wrong calculations and looking at the wrong numbers?

Is the mobo I'm thinking of getting good enough to do a decent OC on a 8500 please?

Thanks in advance!

 

[richardscott]

all mobo can usuwally go faster than the rated speed with a uptodate bios

 

[spuddyt]

^ how far above that is however, purely luck, but for P35 and P45 chipsets usually quite a lot higher.... 421 FSB is a realistic goal

 

[amdbuilder]

Am I right dividing by four?

Do I need a mobo that goes beyond 1333 FSB?

What do I need to look out for in a mobo to make sure it can overclock an 8500?

 

[richardscott]

generally its the chipset that matters most a p45 board can generally do 500fsb and your right in dividing by four

 

[amdbuilder]

Thanks mate, so why do the more expensive mobos only quote FSB of 1333? Doesn't make sense.

 

[richardscott]

because they can sell them for more , actually any decent mobo can run as fast as the best out but are generally limitted by bios, so they can say the more expensive performes better.

 

[anartik]

Just my two... I would stick with a board from Asus or Gigabyte. I might be wrong but as I recall Asrock is Asus's econo brand. If you want a reasonably priced board with out lots of extra fluff check out the rampage formula X48. It's a very stable and mature X48 board that evolved from the X38 version.

The norm for Intel is 1333 and I believe nothing other than some of the Core extremes use 1600 which the X38/X48 boards support anway. As for the math... multiplier X FSB = cpu clock. i.e. 9.5x450 = 4275 and 450x4 = 1800 bus.

 

[Guest]

I agree I have this Gigabyte P45 and its great here are my numbers