then back to over-clocking at the cool of the night. Is this wise, or not recommended? I mean AmD's and intel's use an auto funtion to accomplise this, such as cool'n-quite, and intels speed-step. So i Ask you guys is there is no wrong in doing it manually? I'm going from about 286x14 at night(system temp @ 22c) to 165x14 fsb in the heat of the day(system temp @ 30c~36c). Any thoughts and or comments are welcome. abit is7 i856pe Prescott 2.8ghz @ 4004Mhz 286x14 FSB @ 1144Mhz 512x2 in dual config @ 430mhz 9800 se unlocked & clocked @ 444mhz/800mhz

What the CPU does most the time is wait, wait, wait and more wait, if you don't mind staring @ your BIOS twice a day go for it. There is nothing wrong with that. The only risk I can think of is, your BIOS gets quirky on one of those occasions, and then you're stuffed. A justifiable purpose to this exercise is something I'll leave for someone else to ask. Do not type anything in this space.

In my opinion: I see no useful purpose to this type of exercise, none whatsoever. I have used comps both O/C'd and not in various parts of the world over many years. This includes the tropics, Africa, India and a few places in the Middle East. I have yet to come across a problem with a system and ambient temps, providing the system has adequate cooling and ventilation. I also agree with Sabertooth, the more you tinker with BIOS the more there is a chance that a problem could arise. Just check out your cooling and venting, there should be no need to keep O/C'ing and Under/C'ing all the time. AMD64Bit 3800+ Socket 939 WinXP Pro. Nvidia:6800GT Dane Electronic Pro. Dual 1024MB 400MHz RAM Tagan 480Watt PSU: 28Amps on +12volt rail. Asus A8V Deluxe "WiFi" M/Board - AquaGate

I undervolt...not necessarily underclock. If I push my machine to it's limits, that requires and overvolt and temps go up. I can overclock slightly and undervolt the cpu at the same time. You or I will only see the difference with a benchmark program...not when using the thing day in and day out. Each motherboard will offer or not offer solutions like this. Your peace of mind will also guide you. My particular machine will run a 2400+ at 2600+ speeds with an overvolt and temps go up 10°C. At slightly over default 2400+ speeds, I can undervolt any enjoy much lower temps during the summer. Real performance shows no difference. So, what's the point of a slightly higher benchmark score if it's effectively nonexistant in the real world? Another way to look at it...if your machine works just fine, ignore the temps and configure for max performance. Another way; use default settings and be happy. Another way is to underclock and feel that it's still plenty fast for your needs. My solution happens to fit my current machine. Your results may differ... ^disclaimer is last sentence above^ Skip

thanks for the quick replies, I ask cause its gets real hott in my room in the afternoon and with no A.C and me just browsing the net and watching movies, I see no need for my Cpu to be running so fast and generateing so much heat increasing the temp in my room. If my case were any more vented, it would be naked, lol. But you guys are right about the bios, the probability of me seeing an elefant is greater if there is a circus in town. abit is7 i856pe Prescott 2.8ghz @ 4004Mhz 286x14 FSB @ 1144Mhz 512x2 in dual config @ 430mhz 9800 se unlocked & clocked @ 444mhz/800mhz

THats a good way to look at it skip, good advice. abit is7 i856pe Prescott 2.8ghz @ 4004Mhz 286x14 FSB @ 1144Mhz 512x2 in dual config @ 430mhz 9800 se unlocked & clocked @ 444mhz/800mhz

How about installing a fan controller so you can turn it up when it's getting hot, and then turn it down when it's cool at night (so that it's quiet)?