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doc6886
06-24-2006, 04:29 PM
Hey guys, I have an A64 3800 NC and an Asus A8V Deluxe motherboard and I have been having some confusion with overclocking this. For overclocking A64s, we are concerned with FSB, HTT, and CPU multiplier. The FSB I am clear on, but what I'm not clear on is the HTT and HTT multiplier? I don't see anything in the bios mentioning this. Here is picture of the bios:

http://www.hardwareluxx.de/andreas/Artikel/ASUSA8V/IM003845.JPG

Anyone familiar with this board can help me find what I need for HTT and stuff?

flippin_waffles
06-24-2006, 05:14 PM
Well, the HTT is the hypertransport which won't affect your OC much, if at all. Just make sure you keep the overall speed of the HTT bus below 1000 or 1100 maybe at the most with this board. I've killed a windows installation more than once with HTT to high. So, if you raise the core cpu speed, you'll need to lower the HTT multiplier accordingly to keep it below 1000mhz. For example, if you raise the core cpu speed (this is what you refered to as fsb), to say, 250, then drop the HTT multiplier to 4x. If not, the hypertransport bus will be, 5x250=1250=not good.

doc6886
06-24-2006, 05:38 PM
But where do I find the HTT multiplier in the Bios? I haven't found it yet... I do, however, see a place to change the HTT. It allows me to choose 1000mhz, 800mhz, 600mhz, and 400mhz.

flippin_waffles
06-24-2006, 08:03 PM
ok, well that's basically the multipliers. 1000mhz is 5x, 800mhz is 4x and so on. so, it's 5 x 200mhz=1000mhz, 4 x 200mhz=800mhz, etc. so just substitute the 200mhz with whatever you set your core clock rate(fsb) to.

doc6886
06-24-2006, 08:19 PM
So if I change the FSB to 250, what should I set the HTT to? 800? Since that would mean HTT multiplier is 4x and I want 4 x 250 = 1000mhz HTT?

flippin_waffles
06-24-2006, 08:40 PM
correct. :) keep in mind you don't need to have 1000mhz either. there is plenty of bandwidth even if your HTT is only 900mhz or something. but yeah, you've got the idea.

doc6886
06-24-2006, 08:47 PM
Thanks so much flippin! :D