TheConqueror Posted May 31, 2009 Posted May 31, 2009 Hey guys! Anyway I was wondering if anybody has compared the two. I heard overclocking by base clock gives better results. I know some of you out there are really experienced in this field, and as my build isn't done yet I want to know this. If you guys would try to OC as far as you can on both of the methods, and post a SuperPi run, so we can see if there is any speed difference.. Thanks guys... *PS* Also if you OC with the base clock you have to like unlink the RAM or something right? Sorry I am sort of a noob at this. Share this post Link to post Share on other sites More sharing options...
RaPiDo987 Posted May 31, 2009 Posted May 31, 2009 +1 on this... I'm about to get a x4 940 in a couple of days and would like the best way to overclock it. Share this post Link to post Share on other sites More sharing options...
maj0rgamer Posted May 31, 2009 Posted May 31, 2009 (edited) if you guys/gals are overclocking for the first time, the easiest way to do it is to increase the multiplier... assuming you're using a chip that has one. can't see where it would be better to raise the front side bus, it's probably worse to do it that way (inexperienced atleast) as it's most likely going to put more stress on the chip, plus when raising the front side bus ram frequency is probably going to need to be tweaked as well (correct folks? maybe somebody with more experience can elaborate on this) which requires more know how and can cause more problems with instability... if the ins and outs for this aren't known, it's most likely going to make overclocking that much more difficult. for reference, however, the formula seems to be fsb x 2 = ram frequency... however there are more variables, when increasing ram frequency it's most likely going to need more voltage and more voltage can mean more heat (coupled with the heat produced from running it at a higher frequency) and more pressure on the ram, and too much can fry it. this all is to give some examples that overclocking a cpu by raising the front side bus rather than simply raising a multiplier is much more challenging. by simply raising the multiplier there is no need to even mess with the ram... just raise the multiplier for the cpu and possibly add some voltage if needed until reaching a max stable overclock. again, there is much more to it than this, so research should be done and questions should be asked... but overclocking a cpu with an unlocked multiplier is pretty simple to do, and efficient. Edited May 31, 2009 by Maj0r Gamer Share this post Link to post Share on other sites More sharing options...
alentor Posted May 31, 2009 Posted May 31, 2009 if you guys/gals are overclocking for the first time, the easiest way to do it is to increase the multiplier... assuming you're using a chip that has one. can't see where it would be better to raise the front side bus, it's probably worse to do it that way (inexperienced atleast) as it's most likely going to put more stress on the chip, plus when raising the front side bus ram frequency is probably going to need to be tweaked as well (correct folks? maybe somebody with more experience can elaborate on this) which requires more know how and can cause more problems with instability... if the ins and outs for this aren't known, it's most likely going to make overclocking that much more difficult. for reference, however, the formula seems to be fsb x 2 = ram frequency... however there are more variables, when increasing ram frequency it's most likely going to need more voltage and more voltage can mean more heat (coupled with the heat produced from running it at a higher frequency) and more pressure on the ram, and too much can fry it. this all is to give some examples that overclocking a cpu by raising the front side bus rather than simply raising a multiplier is much more challenging. by simply raising the multiplier there is no need to even mess with the ram... just raise the multiplier for the cpu and possibly add some voltage if needed until reaching a max stable overclock. again, there is much more to it than this, so research should be done and questions should be asked... but overclocking a cpu with an unlocked multiplier is pretty simple to do, and efficient. according to what u just said to rise the FSB is a bad idea, so in other words if i overclocked my CPU using the FSB then my OC is bad or not as good as it can be? my FSB set to 267(200stock) x12.0 1.344V 3.2GHZ i got a phenom II 920 Share this post Link to post Share on other sites More sharing options...
jgv115 Posted May 31, 2009 Posted May 31, 2009 The only reason raising the multiplier is not seen so much is because the majority of people have Intel and Intel's extreme edition processors cost like 10 thousand dollars. If you are going for a OC record then you up the multiplier so nothing else can limit your overclock besides heat and the CPU itself. Normally it is better to raise the FSB because your whole system goes faster. But in sacrifice of this, there are many more problems that can occur that need to be taken into consideration. For example: RAM limits (RAM cannot keep up with the clock therefore letting your whole system down), memory dividers, chipset voltage, RAM voltage, RAM heat. Share this post Link to post Share on other sites More sharing options...
The Smith Posted May 31, 2009 Posted May 31, 2009 no no no. The base clock is simply a reference clock for everything. All parts have a multiplier that will dictate their clock, in function of the base clock. In other words, if you increase your base clock, everything will get overclocked, but it will be as good as increasing all multipliers and leaving the base clock at 200MHz. Also, for locked multipliers, you need to increase the base clock in order to overclock your CPU. What you will do then is decrease the multiplier of all other parts to compensate so that you overclock only one thing at a time. Share this post Link to post Share on other sites More sharing options...
alentor Posted May 31, 2009 Posted May 31, 2009 no no no. The base clock is simply a reference clock for everything. All parts have a multiplier that will dictate their clock, in function of the base clock. In other words, if you increase your base clock, everything will get overclocked, but it will be as good as increasing all multipliers and leaving the base clock at 200MHz. Also, for locked multipliers, you need to increase the base clock in order to overclock your CPU. What you will do then is decrease the multiplier of all other parts to compensate so that you overclock only one thing at a time. yeah i had to decrease the RAM from 533 to 400, north Bridge multiplier from 9 to 8 if in not wrong, decreased the CPU multiplier to 12 from 14 and increased the FSB, in order to OC the CPU and as i was increasing the FSB my ram clock increased as well but now i cant set my ram to 533MHZ, why is that? my runs atm at 1068mhz and i still wanna get my answer if its beter to over clcok ur CPU multiplier then to overclock ur FSB? Share this post Link to post Share on other sites More sharing options...
Nekroze Posted May 31, 2009 Posted May 31, 2009 I think above all the main simplified question being asked here is that: if you have a CPU with an unlocked Multi, all other hardware aside. would you get the same benchmarking results(as in a more powerful OC) by increasing only the Multi or the FSB(or equivalence.) as in say a CPU that is clocked to 3GHz first with FSB 200mhz and multi 15 then with FSB 300mhz and multi 10. which one (although both essentially 3Ghz) is faster/better/more powerful or even more interesting more hot! i know that my example may not be the best but its all i could think up real quick. although i do not know the answer or even if there is one other then "no difference at all" i am rather interested in finding out, although it really would requiring either a very experienced OC'r or someone to ACTUALLY do these benchmarks. Share this post Link to post Share on other sites More sharing options...
Crazy_Nate Posted May 31, 2009 Posted May 31, 2009 Both are fine... There are slight performance differences between (say, running a higher FSB, with a higher RAM frequency), but for what you're doing it probably doesn't matter. Unlocked CPU multipliers just make it easier. Share this post Link to post Share on other sites More sharing options...
TheConqueror Posted May 31, 2009 Posted May 31, 2009 Ok so for DDR3 RAM + Phenom II 955, which way would be better? Probably multiplier because of RAM timings and stuff right? I was thinking I would probably go as far as I can using multi, and then squeeze out some more MHz using base clock to get the highest OC possible. Any idea's of aproximately what the settings would look like? Share this post Link to post Share on other sites More sharing options...
9KRacing Posted May 31, 2009 Posted May 31, 2009 Any idea's of aproximately what the settings would look like? Nope. Everyone's rig is different, everyone's ambient temps are different, and as always... your milage may vary. While I have personally seen people running their E8500 chips at 4.2ghz at 1.3vcore, I can't even get close to that with my chip... it simply runs too hot. (Damn you CA) Basically we could give you ideas of what other people with the same chip have their setting at, but tbh it won't matter. Your settings WILL NOT be the same. Only way to find out is to buy it and test it out yourself. B:) Share this post Link to post Share on other sites More sharing options...
TheConqueror Posted May 31, 2009 Posted May 31, 2009 Yes well that is why I said approximate Share this post Link to post Share on other sites More sharing options...
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