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Overlocking AMD FX 6100: Change the FSB or multiplier?

post #1 of 4
Thread Starter 
ok, so when i have overclocked in the past and even now i have always just changed the FSB. but when i got the 6100 and an asus m599x evo i used their auto tuner which did the same thing changing the FSB instead of the multiplier

but when i read about some people asking the same thing i am now pretty much, they all say change the multiplier, so whats the difference?

6100 @4ghz with stock cooler, i bought the coolermaster V8 and intend on overclocking some more maybe 4.4+
post #2 of 4
I think bringing up the FSB will put more strain on the rest of your system (RAM, Mobo), and Multiplier is much simpler.
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post #3 of 4
Quote:
Originally Posted by Legonut View Post

I think bringing up the FSB will put more strain on the rest of your system (RAM, Mobo), and Multiplier is much simpler.

Using multiplier alone is a simpler way to do it but no matter how you go about it, some part of the system will experience additional strain. If you use higher multis for example, the CPU itself is working harder per MHz cycle = more strain and heat generated.

Historically speaking, AMD's have always preferred a mix of multi and FSB clocks, this seems to give the best overall results with one. Esp if using the stock CPU cooler, a mix of multi and bus speed will let you go farther in MHz than by using multi's alone will for the above reason. However anytime you change settings to reach a higher speed, you will be increasing the strain on components, the trick is to spread out this strain across these, allowing different components to shoulder part of the load, not most or even all of it.

Using the bus is actually a less strenuous way to get higher speeds overall but I have to say even that has limits - No matter how you go about it, watch temps once you reach your target speed and make adjustments as needed. If the CPU for example is getting a little warm, try lowering the multi a tick while bringing up the bus to compensate. Also watch voltage used, it's easier than you'd think to use too much voltage but as long as it's not running hot and it's stable, you're good.
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post #4 of 4
A higher bus is mostly dangerous for the bus and northbridge itself because the northbridge does the work to throw out all the data at a much quicker speed.

As stated above, the multiplier is the internal clock on the chip itself, so it won't like you if you go too high. A mixture of both is the best way, but whatever you use there will be a limit somewhere.

Unlocked chips, multiplier is the easier then raise your FSB to get additional performance.

You'll find a lower voltage is easier obtained using your multiplier, I got 1.320 for 4Ghz on the same chip and same motherboard, whereas I jumped into the 1.4 area using FSB and multiplier.
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