You must have to spend nearly double the money on the motherboard to get the faster processor of your choice many people normally upgrade the system every years as new technology come into the market.
There are many companies provide different capacity of motherboard, you need to select the new upgraded version if you have a good budget. If you do not have enough budget to get the upgraded version of the motherboard than you must have to select the suitable processor with the BIOS.
You can also faster your speed with the lower budget; you just replace the chipset and the BIOS that support to your mother board. It is one of the best ways to get the cheapest solution to the motherboard. It is up to you to decide the suitable motherboard of your choice to get the better solutions. Replacement of chipset with BIOS needs $100 to $150 in your budget to get the proper speed of your PC that faster your hard drive and RAM. With the addition of chipset and BIOS, you can run the sound and video card too.