I currently have the new HP Envy 17 w/

Intel core i7
ATI Radeon Mobility 5850
8GB RAM
640 GB HD

I have both scratch live and video-sl running on this machine and I was having massive usb drop out and bandwith issues. when play videos in serato my cpu usage was 26-33% (which is great), but i would still get freezing and hanging. I tried all the codecs, registry hacks and nothing worked; I was using the SL1 box at the time. I brought my laptop to Guitar Center and thy hooked it up using an SL3 and difference was unbelievablle!! audio and vids played flawlessly. No hangs no freezing even when using the maximum output setting values for EVERYTHING! granted I have a beast of a notebook, but this will work for almost anyone w/ lesser specs than the ones I posted above.

The SL1 still uses usb 1.0 so it cannot satisfy the bandwith needs that VSL impose on the hardware. SL3 uses usb 2.0 which doubles and in some cases triples the data transfer rate of usb 1.0.

I can use the highest settings in seratao and VSL without any problems at all. IF YOU CAN AFFORD IT, SELL THE SL1 AND GET THE SL3. TTM users will also need to do the same right now. I would purchase a DJM700 and buy the SL3 works to about the same price you would spend for a TTM.

I am surely not a Serato salesman, but if your looking for something that will work this is it!

Note: before i bought the HP ENVY i had a regular HP dual core machine and even the performance on that improved when using the SL3. THE ENVY IS STILL CRACK THOUGH!!! :)