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1090T FSB overclock vs Multiplier overclock

post #1 of 14
Thread Starter 
At the moment i'm overclocking to 4.02ghz on my 1090T BE, 205 FSB x 19.5 multiplier. My memory is slightly OC due to FSB increase and Vcore is running at 1.45v. NB is at 3090mhz @1.35v. 100% Stable, idle around 35c, under load around 45c

Would I see more performance increase if I overclocked by increasing the FSB instead of the multiplier or would it be about the same? Say for example 250 FSB X 16 multi?

Please give me advantages of overclocking by raising FSB compared to raising Multiplier and let me know if it's something I should look into.

This is the memory I have...It doesn't seem to want to overclock atall.
[ame="http://www.amazon.co.uk/Skill-Ripjaws-F3-10666CL9D-8GBRL-DDR3-1333MHz/dp/B003SLFBUW/ref=sr_1_2?ie=UTF8&qid=1312151354&sr=8-2"]http://www.amazon.co.uk/Skill-Ripjaws-F3-10666CL9D-8GBRL-DDR3-1333MHz/dp/B003SLFBUW/ref=sr_1_2?ie=UTF8&qid=1312151354&sr=8-2[/ame]


Many thanks
Edited by Darylrese - 7/31/11 at 3:30pm
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post #2 of 14
You get increases in ram speed and NB speed when using the reference clock.
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post #3 of 14
Im not exactly a veteran OCer but we have a similar setup and from my experience I just used the multiplier however using the FSB you will see slightly better results as it OCs more than just the cpu but it does affect the RAM more most instability causes in FSB OCs are Ram issues might have to increase voltage or play with timings a little bit
    
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post #4 of 14
Thread Starter 
would a FSB overclock lower temps / voltages atall on a stable OC?
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post #5 of 14
Quote:
Originally Posted by Darylrese;14417194 
would a FSB overclock lower temps / voltages atall on a stable OC?

No, either way you will need to increase voltage's which will raise temps.
i have noticed windows seems more snappy when using the fsb however.
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post #6 of 14
Thread Starter 
I mean will I be able to run a stable OC with a lower VCore than I can at the moment or is 1.45v about average for 4.0ghz?
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post #7 of 14
the voltage should be roughly the same,but i'd recommend a fsb overclock,(then a multiplier if you got the headroom for it)its more involved as you have more to add than cpu voltage and multiplier,but it should feel more responsive,aswell as increasing frame rates-which is the whole point right?
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post #8 of 14
Final clocks of the various components and buses are all that should matter for performance and voltage needed.

I usually use multipliers first, then fine tune the OC by adjusting the reference clock (FSB hasn't existed on AMD setups since socket 462).

I use 211x19 for my 555BE with a 13x multiplier on the NB, a 7x HTT and memory multiplier.
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post #9 of 14
There is no difference in FSB or Multi overclocking in terms of stability, some chips just prefer a certain FSB or multi, so you have to play around and see which configuration is the best for you.
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post #10 of 14
im glad someone asked this question. iv been wondering about it. im trying to get to 4ghz but cant get it stable and this answered a few of my questions.

theres a whole world of info out there if one will look

thanks for the info guys!
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