Heat probs reported for Intel E8400s

[Vapor]

Since they use less power than the E6xxx series its easy to conclude they dont run hot, but rather colder.

HUUUUGE misconception.

Okay, maybe not huge, but still a notable misconception I see at a lot of places.

Basically: yes, it may have a lower heat output per clock-volt, but because the die size is significantly smaller (and IHSs are not super functional), you cannot make generalizations about temps. Power density is no longer the same.

In fact, each HSF handles different heat-dump characteristics differently...some have very high load capacities but use it on a small chip at medium load and it can't move the heat away fast enough leading to high temps. The opposite is also true for some sinks.

And not to sound snobby or anything, but you go to phase/DI/LN2 and OC, you're largely flying blind for CPU temps--why do people rely on them so much on air/water? Heck, when B1 ES Conroes were around, we had nothing to know the temps and that didn't stop us from getting the exact same clocks we would eventually get with temp software. Practice your HSF mount, and just overclock.

[Shintai]

HUUUUGE misconception.

Okay, maybe not huge, but still a notable misconception I see at a lot of places.

Basically: yes, it may have a lower heat output per clock-volt, but because the die size is significantly smaller (and IHSs are not super functional), you cannot make generalizations about temps. Power density is no longer the same.

In fact, each HSF handles different heat-dump characteristics differently...some have very high load capacities but use it on a small chip at medium load and it can't move the heat away fast enough leading to high temps. The opposite is also true for some sinks.

And not to sound snobby or anything, but you go to phase/DI/LN2 and OC, you're largely flying blind for CPU temps--why do people rely on them so much on air/water? Heck, when B1 ES Conroes were around, we had nothing to know the temps and that didn't stop us from getting the exact same clocks we would eventually get with temp software. Practice your HSF mount, and just overclock.

Ok if we stay at stock clocks for abit. 45nm uses about half the wattage from what we have seen in reviews. And the 45nm chips is about 74% the size of 65nm.

Also if you check the usual sensor reading programs. They all seem to show very different temperatures. In short, we just need updates to the programs with the new sensor information and base values.

[Vapor]

Ok if we stay at stock clocks for abit. 45nm uses about half the wattage from what we have seen in reviews. And the 45nm chips is about 74% the size of 65nm.

Also if you check the usual sensor reading programs. They all seem to show very different temperatures. In short, we just need updates to the programs with the new sensor information and base values.

No argument there, but we don't buy expensive motherboards and HSFs to stay at stock settings.

1) they have lower stock voltages, which is huge for heat (considering user voltages haven't really gone down...), and
2) reach higher clocks

Power density is up for our purposes, therefore we should not expect OC'd temps to necessarily be better, even if heat output is lower.

Anyway, my main point is that temps are essentially useless for overclocking. Once you know you have good HSF/IHS contact, that's all you need (at least if you know what you're doing...and if you don't, don't overclock until you do).