Real Temp - New temp program for Intel Core processors

[rge]

Core I7 computer at stock, idle, C1E and EIST Disabled
224-227W from wall
CPU according to everest 17W
Idle temps 35, 36, 35, 31 (ambient 25.9C)

Core I7 computer at stock, idle, C1E and EIST enabled
209-212W from wall (same with Realtemp open or closed, or everest/coretemp open or closed)
CPU according to everest 2.3-4.3W idle (same with realtemp, etc. open or closed)
Idle temps 33, 33, 33, 30

same plus C3/C6/C7 enabled
203-206W from wall (same with realtemp, etc. open or closed)
CPU 1.6W idle (same with realtemp, etc. open or closed)
32, 33, 33, 29 (maybe .4C lower than just EIST/C1E enabled monitoring avg for 3 mins, vs variability)

Overclocked to 4.4ghz
275-279W from wall (same with realtemp open or closed)
CPU 41W (same with realtemp open or closed)

OC 4.4 with EIST, C1E enabled
265-268W (same with realtemp open or closed)
CPU 35W (same with realtemp open or closed)

OC 4.4 with EIST, C1E, and C3/C6/C7 enabled
263-266W (same with realtemp open or closed)
CPU 32W (same with realtemp open or closed)

What I learned from doing this
1) Realtemp, Coretemp, and Everest do not alter the power whether running or not with EIST, C1E, and C3/C6/C7 and hence would not alter the temps. They do not interfere with the small power drop of enabling C3/C6/C7.

2) EIST, C1E, C3/C6/C7 enabled would save me $25 per year if running stock settings or $12 per year if running OCed settings, if I had my computer on 24/7 for 1 year. (less with OC setting since vcore is not reduced on GB boards when OCed)

3) If you want to be collectively green, dont overclock, and use power savings, and turn your computer off or S3 when not using. But only one of those that is going to save an individual any significant money is using S3 or turning computer off when not in use.

4) S3 mode saves me $281 per year (whole computer including monitor, etc). If using S3 or off button, and computer in use 25-50% time, then EIST/C1E/C3,C6,C7 saves ~$10 per year, ie not worth the annoyance of it interfering with benching runs, and that $1 per month no one is going to notice. Want to save money, use S3 or off switch.

5) Enabling C3/C6/C7 will not drops idle temps by any significant amount (typically less 1C, though maybe 1 on stock cooler). ~3-4W vs ?~1.8W, both are going to have minimal 6-7C over ambient idle temp.

In the US, avg cost of power is $0.115 per kilowatt-hour, which is almost exactly $1.00 per Watt-year. So, Leave a 60W bulb on for a year pay $60. Save 10 watts for 1 year save $10. The simple rule is 1 watt for 1 year = 1 dollar.