Where offset voltage saves some heat, is that as the processor ramps up and down in speed depending on load, the voltage delivered also goes up and down as opposed to being fixed at the highest amount needed all the time. It does not change what that load voltage is. So set offset so that the voltage under load is the same as it is when set fixed. It will go down when the load is lower.
Now, you did not mention what cooling you are using; the 370k is a hot chip. If you are overclocking, (and frankly, even if not) the crappy Intel heat sync is just that, crappy. A better air cooler, or water cooling if doing a serious overclock, is needed to get the temperature down. I am on a custom water loop with a 360 radiator cooling just the CPU, and I still hit the low 80s c when overclocked to 4.7ghz, and the upper 80s when at 4.8ghz. The cover over the CPU die (IHS) is glued down on the chip with a black hard material that raises the IHS just enough to prevent it from making solid contact with the DIE. So Intel uses this thick thermal compound to fill in the gap between the CPU die and the IHS (like a layer of frosting between two layers of a cake). The IHS can't do the job of removing heat from the DIE, and transferring it to the heatsync/cooler, if it's not making good contact with the die and that is where the problem is. A better cooler helps but it can only do so much. That's why so many people are removing the IHS, cleaning the black goop off, and using a liquid metal thermal paste between the die and chip. They just lay the IHS back on the CPU and let the motherboard clamp hold it down. It's call delidding, and there are several methods to do it and all carry some risk that you can damage the chip. You can google it to get more information. I did several, with 100% success, with an average 18c drop in temperature across the board.
So the voltage you need to run at a particular speed is what it is, and cannot be lowered without testing for a good 12 hours minimum with something like PRIME95, a stress program. Once you know what your chip needs when set fixed voltage, set offset so that the load voltage is the same. The resulting voltage and heat are what they are, get a better cooler and maybe delid if you want to take a risk with the chip.
Current rig:
Asus MVE/32gb Trident-X 2400/1 Muskin Atlas MSATA 240gig - Win 7 Ultimate/2x Segate 3tb 7200rpm, 1 WDB 1tb (data backups)/1 PCIE SB Fatality/3770k delidded at 4.8ghz/2x EVGA 580 3gig (not yet on water)/2x LG BD burners/Water- Raystorm block, Rad-XSPC RX360v2, Res-Alphacool dualbay Repack w/D5vario, on distilled./PSU Corsair 1200i/NO case- on a 6' metal shelving unit, also holds my server, and drawers w/spare parts./46" Samsung SmartTV UN46ES7100.
ROGBot
