Questions about OCing

[Sim2dude]

I have some questions about overclocking for my system. I'm following the "quick and dirty A64 clocking guide". I am using a Abit AV8 mobo, and a AMD athlon 64 3000+In my BIOS the external clock has a 204/66/33Mhz, is that suppose to be the HTT/FSB? and my Multiplier Factor goes from 5.0 to 9.0 with 0.5 increments. Is that the CPU multi, which do I set to and what does higher or lower do? It seems to lower my CPU frequency. The next thing is the "AGP Ratio (CPU:AGPCI)" it goes from 6:2:1, 7:2:1, 8:2:1, Fixed(66Mhz), and Fix(74Mhz). Where do I set the memory speed? I cant seem to find that anywhere. Also what voltages do I use, there are settings for CPU core, AGP, DDR SDRAM, NB, SB, and HT. Another thing is can I set my fan speed? I could do it with OC Guru program once I get into the operating system.

 

[o1die]

I would load the default settings, then change the cpu fsb to 250, and the HT setting from 5x to 4x. If it won't post, wait a few seconds, and let it reload the default settings, then it will post again, or you can use the cmos jumper to reset the bios settings. Before trying anything, I recommend you read your board manual, and locate the cmos jumper. Most of the other settings you can leave alone. For cpu vcore, you can try raising it from 1.4 to 1.45 or 1.5 for stability when overclocking. Watch the temps, and keep them below 60 celcius under load if possible.

 

[imported_Kensai]

You cannot change the VGA memory speed from the motherboard BIOS. You'll have to use PowerStrip or something of the likes from Windows.

 

[Sim2dude]

umm.. not working out. If I lower the Multiplier factor to like 5.0x, the cpu fsb cant run at 250. It could only run like 240 and the cpu operating frequency is only in like the 1800s. I can do like multiplier factor at like 9.0x and cpu fsb at 225 and run at an operating speed 2025, but thats way below average. Most people do around 2200Mhz to 2400 Mhz on average. Is it because of the motherboard, or that I dont have like arctic silver? I have a thermaltake A1838, and am using the stock thermal compound from the AMD chip. Anyone know what I should do?