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Can the X48 support a 2132 FSB?

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September 13, 2008 4:35:32 PM

I have a Q9550 and 1066 Corsair RAM.

I want to set multi to 6.5x and the FSB to 533. That way I'd get about 3.4Ghz cpu speed, 1066mhz RAM @ 5-5-5-15 (will reduce later), and a 1:1 ratio. I got 1066RAM and i'm just trying to get what i paid for lol. but this would mean a 2132 FSB and I'm not sure if the mobo can support it.

would this work, or should i just stick to underclocking my RAM with 8.5x400, 800mhz RAM @ 4-4-4-12.

More about : x48 support 2132 fsb

September 13, 2008 4:42:57 PM

X38/x48/p45 runs at 1600mhz fsb natively, and reliably ocs to 2000mhz. 2000+ is definitely doable, but can be shaky. You should just downclock ram to 800 and tightening timings, which should improve performance enough to offset most of the part that is lost by downclocking.
September 13, 2008 4:54:37 PM

alright i'm just gonna do that so i don't risk screwing up my board lol. thanks.

jw, how would 1066 RAM, 5-5-5-15 at 1:1 with the FSB compare to 800 RAM with 3-3-3-8 timings at 1:1?
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September 13, 2008 5:04:38 PM

I would say whether you can hit 533 fsb largely depends on the mobo maker and model of mobo you have.

The Biostar TPower I45 has been reported to get over 600fsb on air and as high as 725 with an E8500 (@ 5GHz!) cooled by LN2.
September 13, 2008 5:04:42 PM

irishdude said:
alright i'm just gonna do that so i don't risk screwing up my board lol. thanks.

jw, how would 1066 RAM, 5-5-5-15 at 1:1 with the FSB compare to 800 RAM with 3-3-3-8 timings at 1:1?


In real world, both bus clock and timing of ram matters very little. There is no noticable difference except in synthetic memory benchmarks. Don't worry about it.
September 13, 2008 5:17:51 PM

so should i not both with trying to get the 533fsb? i brought my RAM timings from 5-7-7-24 to 4-4-4-10 (any lower and it won't boot) so that should be good for now.
September 13, 2008 5:20:10 PM

chunkymonster said:
I would say whether you can hit 533 fsb largely depends on the mobo maker and model of mobo you have.

The Biostar TPower I45 has been reported to get over 600fsb on air and as high as 725 with an E8500 (@ 5GHz!) cooled by LN2.


i think the gigabyte x48 might be able to handle 2132 but i don't think the performance boost would be worth the risk
September 13, 2008 7:17:33 PM

I'd say underclock the ram to 800mhz and tighten the timings. You'll get the same performance without the extra stress on everything.
September 13, 2008 7:52:16 PM

Rampage Formula can also get 600fsb on air. There's nothing so special about getting uber FSB. There are more things to performance than just the fsb, memory performance being one of them. With DDR3 being optimized for a 1:2 divider this puts this whole craze over P45s into question. There are P45 boards that sell for the same price as X48s and that's just madness.
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