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1600 FSB vs 1333 FSB

Post Date: 2008-06-11
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MarkNY View Drop Down
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Posts: 476 		  Quote MarkNY Quote  Post ReplyReply bullet Topic: 1600 FSB vs 1333 FSB
    Posted: 11 Jun 2008 at 9:13pm

Hi,

Just curious- would it be worth it to drop the multiplier on my cpu to 9x and overclock the FSB to 1600 with ram running at 1066mhz and cpu running at 3600?  Will there be any noticeble difference?
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Posts: 4219 		  Quote !ender_ Quote  Post ReplyReply bullet Posted: 11 Jun 2008 at 11:42pm
try it and test it
 
best to learn these things by doing
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Tyler Lowe View Drop Down
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Posts: 0 		  Quote Tyler Lowe Quote  Post ReplyReply bullet Posted: 12 Jun 2008 at 1:24am
You may see an increase in synthetic benchmarks, but the real world impact is nil... at least from the testing I have done in the course of overclocking my system. Who knows though. You might find you're able to run with lower Volts and get your temps down a little.
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MarkNY View Drop Down
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Posts: 476 		  Quote MarkNY Quote  Post ReplyReply bullet Posted: 12 Jun 2008 at 1:39pm
Thanks for the tips.

I set the FSB to 1600, but had to increase the FSB voltage to 1.3 (if I remember correctly) in order for it to be stable.  Originally it was auto restarting randomly.  I'm not sure I notice any difference at all.  Currently my cpu vcore is 1.45, which isn't too bad. I may try lowering it and seeing how stable it is.
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Posts: 4219 		  Quote !ender_ Quote  Post ReplyReply bullet Posted: 12 Jun 2008 at 7:23pm
did you try benchmarking the changes at all
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MarkNY View Drop Down
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Posts: 476 		  Quote MarkNY Quote  Post ReplyReply bullet Posted: 12 Jun 2008 at 10:08pm
Yeah.  My system actually scored lower.
 
Not sure if thats a fluke or what.  with 1333 fsb, 3.7ghz processor, 1066 ram i scored a 17700 on 3DMark06.  When I upped the FSB to 1600, 3.6 ghz processor and 1066 ram, I scored a 16600.
 
Maybe I should try PCMark?
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Tyler Lowe View Drop Down
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Posts: 0 		  Quote Tyler Lowe Quote  Post ReplyReply bullet Posted: 12 Jun 2008 at 11:37pm
Maybe. A FSB voltage should not be pushed past 1.3V though, not for that series of chips. The actual spec is 1.26V IIRC. I would not push that voltage any higher. You might well be able to reduce your Vcore, but that's something you find through trial and error. One thing about 3DMark, you want to run it twice. The second run is usually closer to your maximum score. PCMark is a good test. SiSoft's Sandra also offers a nice battery of tests for checking overlcoking results. I have found Cinebench R10 to be useful as well.
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Posts: 4219 		  Quote !ender_ Quote  Post ReplyReply bullet Posted: 13 Jun 2008 at 1:02am

each time i reached a stable plateau with my overclocking adventures (booted to windows, ran pcmark general test) i would run:

everest, pcmark, 3dmark
reboot
rinse and repeat x2, youll see a pretty decent variation in scores. also, always best to run your tests as soon as you boot, no aim, winamp, ie before you start, and make sure you watch your multimeter to be sure all your cores / ram have settled from the startup
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