Overclock Dell, Gateway, Compaq and other branded computers (w/o BIOS or Jumpers) So you want to overclock that beast but you can't find those magic multiplier, front side bus, and voltage settings in the BIOS or mainboard? Well I can help you with the first two. Before we begin, if you're shy of opening up your PC to look around, stop here as it'll take a bit of investigation work. Otherwise... Because you have a branded computer, it's highly unlikely that it includes an industry recognized mainboard like Asus, Abit Gigabyte, Soyo, etc. So the first thing we need to do is to find the PLL IC or clock chip that regulates the systems FSB among other things. The PLL IC is usually located in close proximity to the crystal so that helps. Most of the time, you'll find the crystal with the number 14.3 MHz stamped on top in some fashion. Once you've located it, the PLL IC is not far away. Samples: To help you out, the PLL IC will usually have the manufacturer stamp on it. Possibilities include: ICS Cypress or ICW (now the same company) Winbond IMI plllabs CMedia Realtek Pericom After finding the PLL IC model number, see if it is supported: If your PLL IC matches with one of the above models, congratulations! You can change the FSB and possibly the multiplier via software! The next step is to obtain software to work those magic numbers for you. I recommend CPUFSB by Podien. It supports most of the major PLL ICs but the only drawback it that it's shareware, meaning you'll have to reinstall it every 30 days. Err, or register it in some fashion. Get CPUFSB here After installing CPUFSB, you'll need to reboot your computer so I'll wait here until you come back... -------------------- Welcome back! Now start up CPUFSB. You'll be greeted with a 'please register' screen. Click ok to dismiss it for now. Next you see the following screen: All you have to do now is to click on the arrows under PLL manufacturer and find your specific brand of IC, then on the box next to that, click the arrows to find your specific PLL type. Now comes the proving moment. If you have everything correct, press the GET FREQUENCY button. Your current FSB and multiplier settings should coincide with your Actual Frequency. From here on, it's like any other overclocking procedure. Up the FSB in small increments (remember to press SET FREQUENCY) and run benchmarking software at each try so you can see if things are changing. I prefer Passmark's Performance Test because of it's ease of use and speed. It's not very comprehensive, but it'll give you a good ballpark figure of where your system stands. Passmark Performance Test v4 On a side note, the performance gain may be limited by the CPU core voltage. Unfortunately I do not know of any software that is able to change this. If you can do it on your mainboard, great! If not... Also, this 'tweak' also works on notebooks. I've used it on my Compaq 1692 bringing the 450 K6-III to 600MHz and my Gateway Solo 3150 Fireant from Celery 300 to 345MHz. Of course, you still need to find the PLL IC. Heh Well that's it in a nutshell. Any questions?