From here This makes me wonder - does EIST function in Windows XP? Does it have a driver for EIST support in desktop C2Ds? This also makes me wonder about C1E support - is that also software-controlled, or is that handled by hardware? Edit: That makes me remember - if you are using XP, then you need to download and install an updated AMD CnQ driver if you are using an AMD CPU and have CnQ enabled in BIOS. So is there an updated EIST driver for Intel systems?