NGOHQ.com posted an article on Sound Blaster X-Fi Issues

Back in May, we published an article and report about many issues reported on the latest Creative Labs product - The Sound Blaster X-Fi. A few weeks later Creative released information and blamed DDR Dual Channel for these related issues. And, after a few months, they changed their version and blamed Nvidia's nForce4 for these issues, instead. Nvidia never responded to us about their side in the story, but they denied it on a chat.

We kept following this story and we received a lot of reports from users without nForce4 that claimed they had the same issues. So, to investigate these issues, we grabbed an X-Fi XtremeMusic from the closest hardware store and checked it out on the following motherboards: Asus M2R32-MVP, Asus A8N-SLI, Asus A8N32-SLI, ECS RS482-M and Gigabyte GA-965P. We used Windows XP SP2 with the latest updates and the latest drivers for all the devices. We also used the latest BIOS versions and ensured that the X-Fi was not sharing an IRQ with any other device by plugging it into non-shared PCI slot.

Sound Blaster X-Fi Issues Explored