Tom's Hardware > Forum > Overclocking > CPUs > Athlon II X4 620 OC advice
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reignsupreme11   11-15-2009 at 06:02:26 PM

I've read in reviews that the athlon ii X4 620 does not run very well with the FSB and HT link over 2100 MHz ( http://www.overclockersclub.com/re [...] _620/3.htm )


I've tried adjusting the northbridge multiplier in the BIOS to compensate, but the clock stays the same. My current clocks are at 3.05GHz CPU and 2350MHz FSB/HT.

i'm running a ga-ma78gm-us2h gigabyte motherboard.

it's working fine, i've just heard that performance could be better if i lower the fsb. does my motherboard allow this? i've heard nothing to say it doesn't.

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enzo matrix   12-22-2009 at 09:48:52 PM

You seem to be confusing your Hypertransport and fsb.
FSB is what you are changing and is stock 200MHz
Hypertransport is stock 2000MHz and is a 10x multiple of the FSB (the multi can be changed)
I set my HT multiplier to 8x and have my FSB at 253.3MHz. so my HT is 2026.7MHz. Unfortunately, my motherboard can't change the NB multiplier so it's stuck as is.

The FSB is linked to both your processing speed and your HT link. for you the CPU multi is at 13x so your speed will be FSBx13. You can lower this multiplier but not increase it. Same for the HT but the multiplier is stock at 10x.

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