I am overclocking an E4400 (L2 Stepping) with a WC system. I ran some inital OC attempts and got very positive results on stability. Howver, i wanted to get some baseline non-oc temps before I really started to do some performance tests at different OC levels. The processor is being reported by the bios at boot as being at 54c at 1.31v. I know that the bios chuggs the proc at about 100% so I should get around the same temp/volt when i am running orthos; and i do. That seems really high to me though, especially since the thermal limit of the proc by intel is 61c at TCase. Also, strangely, speedfan is reporting my core temps as being 5c lower than my cpu. I have checked everything i can on this processor and found that speedfan and realtemp assume my proc has a TJMax of 100c. I think it is actually supposed to be around 85c but am unsure. If i adjust for 85c then i get a reported core temp of 22c each...obviously wrong. TJunc temps are ALWAYS supposed to be higher than TCase. I am using a WC system in a custom case i machined/built. Ambient air temp in case is 26c and outside is 25c. My cooling line goes from resevior to VGCard (GF8600GT) and then to proc. My inline temp sensor between VGCard and proc says water temp going into proc (at idle) is 28.2c. I would assume, since i am using top of the line water cooling gear (i am very familiar with WC), with ArcticSilver5 thermal compund, i should be idling around 28.2 + 2c = 30.2c. However this is not the case. Here is some data from speedfan/cpu-z: this is at idle for 30min. water temp to proc is 28.2c This is at full load for 15min using orthos. water temp to proc is 28.9c This is my MB info. Abit IP35-Pro I have already taken this setup to 1.42v @ 3.3GHz and was completely stable (Orthos full load for 24hours). I just can't understand how i can have such high temps with no OC at all. I have checked my board bios for a PECI option but it does not have one. I am at a complete loss as to what temps to believe...or whether i should just start assuming a temp of +2c over ambient water for idling and just adjust all the programs to scale to that. And because I know someone will ask: Yes...I have already reseated the chipset cooling block (Zalman-WB5) with a complete cleaning and reaplication of AS5 and have the same temps a week later (should have full thermal conduction by now from AS5). My 2x120mm fan radiator is cooling beyond what i need it to so i know my heat is not just being shoved back into the proc. My liquid flow is is very good (swiftech pumps are the best!). The only thing i havn't done with my cooling setup is actually open the CPU waterblock and check for a mismachined interior or other defects.