I was going to order a Thermalright SLK-900U but my Motherboard was not listed on the Motherboard compatibility list. I tried even looking at other lists on other Heatsinks on that site, and found nothing on my Motherboard. I could use some information. My Mobo is a Gigabyte GA-7ZXE which is a 133 FSB SDRAM Mobo (I know, it's sad). Information on this Heatsink or maybe suggestions on what to get will be greatly appreciated. Thank you very much.