Ok, I got some answers but still I’m sure something is wrong. If I had the temperature with 1500+ less than 45 C, and now it’s 65 C, up to 75 C, I think there is something more. It should not be so big difference between 1500 and 1800 processor. I mentioned that I tried three coolers, and also few kinds of thermal paste, so these temperatures were even higher ( up to 85 C!!!). I just wonder what if I’ve bought 2200+. Move to Arctic or what. OK, here are more details, so if anybody got some idea please help me. First system I made was MSI KT266 PRO-R, KingMax DDR266 -256Mb, AMD XP 1500+, Master Cooler (up to 1800+), IBM HDD 40GB, ABIT GeForce 2 MX 400, etc, and it worked great with 45 C, rarely to 50 C. On Win ME, Win 2000, and Win XP, no problems. Than I made a second one, ASUS A7V333, No-name DDR333-512mb, AMD XP 1800+, Arctic Cooling Super Silent 2000, IBM 80GB, MSI GeForce 4 MX 440T, etc, and it start. Temperature more than 70 C, sometimes up to 85 C. So I bought another cooler some “Spire” and it was better but still between 60 and 75. So I was thinking why not to put Master Cooler in and try, as I saw that it’s a good brand. I did so, and it was a little better, as I said, 60 C normal, sometimes going to 75 C. Little better than Spire. I put Spire in old machine and it’s even low than Master Cooler, 38-42 C. Ok, the case is more empty now than before. So, old system don’t have any problems with temperature or crashes, and new one crashes on some games even the temperature reach only 65 C. On Win ME, Win XP, same. The software is the same, everything. I read that there is some problems with AMD XP, Win XP and DirectX 8.1, but it works on 1500+ ok. The point is that I do not believe it could be so big difference between 1500+ and 1800+, or what. Please HELP!!!

I have an athlon xp 1700+ and my max temperature lays between 60 and 70 C. So your temperature seems to be normal for me. :)

I have the same CPU and it runs 63-69 degrees no matter what I'm doing. Three case fans, etc. I was starting to worry too.

My 1800+ runs at 43-45C ide and 49-50C running SETI, this is with a stock AMD heatsink/fan. Normally if you're getting higher than normal temps (normal is actually somewhere between 50C-60C full load) it's because the thermal compound wasn't applied properly, probably too thick an application. Should be very thin. If you change the heatsink you need to use something like Goo Gone and cotton swabs to get rid of as much of the old thermal paste as possible. The thermal paste you use and especially how it's applied will have more an effect on your temps than the particular heatsink/fan you're using. So that's where I'd look.

Well your temp problems aren't as bas as you think they are. The first motherboard you had actually doesn't give you the temp inside the cpu, but msi attempts to approximate the temperature where the heatsink and the cpu core touch. Most motherboard manufacturers do this since this is what people who check the temps manually will look and they try to match up with that. Your new board the asus a7v333 with a bios under 1011 will tries to approximate the temp inside the cpu core which is about 7-10 degrees Celsius warmer than the temp where the heatsink meets the cpu. If you upgrade the asus board's bios to 1011 you will notice that the temps will go down 7-10 degrees because asus has changed there bios so that it estimates the temperature at the same place other motherboards do. So in reality your asus board (not the 1011 bios) is giving you a more accurate reading since the temp inside the cpu is what can't get above 90 before it causes damage according to amd. However with the 1011 bios asus brings the temps into the same scale all the other mobo manufacturers use so that people don't get as scared when they see temps in the high 60's.

Jo Hi! my prozi is an amd 1800+ and my temp was to high to. 3d games always crached after 5-10 minutes and the bios said 65°c. I belive that my mobo is damaged, because the bios tells me my cpu gets 1.76V, but Motherboardmonitor shows me 1.78V. I got my sys fixed with a 2. 80mm cooler on the cpu (yes i got 2 vans on 1 cpu, and no, i cant build in the poversupply anymore) now my temp is @ 50°c idle and @ 58°C when running latest games. I dont know if your mobo is s--- too. my one is a GIGABYTE GA-7VTXE+.

I have an Athlon XP 1800+ overclocked to a 1.74Ghz (XP 2100+) with one fan at the bottom and one fan at the top of the case and a Dr. Extreme CPU fan. At full load while playing a graphical game (Morrowind) I stay around 50 C. .. Idle is 47 C. With case closed. If you can stand the hair dryer noise, I highly recommend the Dr. Extreme CPU fan! Before the fan I was a steady 65 C. at Idle Temp.