Some people who have followed my other blog Good Night Geek before it turned into an iPhone app review blog may have seen my post about MenuMeters. I have found an even better alternative though. iStat menus is a form of one of my favorite dashboard widgets called iStat (download link at the bottom). This is in menu form, but unlike MenuMeters, gives you a lot more info, such as temperatures and fan speeds. Also for you multi-core users, there is a separate CPU meter for each core. Finally, some definition between two cores. Also, I can monitor things like how fast my fan is running (for me it’s usually about 2000 RPM). You can also see why your computer is making far more noise than it usually is. I know. I’ll take a good look at my iStat menus. Wow, my temperature is almost 100ºF (you can change it form F to C to K), and Wow, my fan is running 3 times faster than usual at a blasted 6200 RPM! Now I know. I have my primary temperature (the one that appears in the menubar) as the enclosure bottom, but I can have it configured so it shows the temperature of well, almost anything! The nice thing is that if you want to monitor multiple temperatures, just choose the most important one as the primary and to look at any of the temps, just click the temperature in the menubar. it will then give you details of everything in your computer that has a heat sensor including CPU(s), Heatsinks, batteries, and even the bottom of your computer (enclosure bottom). It groups fans and power together, so if you click on the fan speed in my case, I can see how many watts everything is using and how fast my fans are going. Click on my CPU info and I can see a lot of info about what is taking up the most CPU, uptime, and even a button to open activity monitor. There is much more you can put up there in many different ways, But I already have a lot of stuff in the menubar and that does not work good with photoshop because of how many menus it has.