This is sort of weird. I have a desktop PC that runs Windows 7 64 bit Ultimate. I have 2 XBOX 360s' in the house as well. One has a 20GB hard drive the other is the arcade version or what not with no drive. I set the one up with the 20GB drive to work as a media center extender. It works great but it's incredibly slow. If I press a TV channel in the guide it takes 8-10 seconds to display it, same with changing channels. Even the interface seems sluggish.
I then decided to hook up my other Xbox as an extender upstairs. So I connected it as an extender and set it up. I haven't plugged it into the Internet in probably a year so it kept wanting to do an update. I told it to update and it updated a bit then it said it needed 190MB of free space on the console to apply the update. I have no HD so I couldn't do any update which is really weird so I had to cancel. Media Center still works, it just tells me to update every time I turn it on. The weird thing though is it runs just as fast as my PC! Pressing live TV and changing channels is pretty much instant, there's no delay in loading it's incredibly fast with no issues at all.
The downstairs one has no issues with playback or stuttering or anything it's just really slow. Is there a reason that it would be 10x faster with no HD? I thought a HD would have made it faster.