Yamaha DX7 Resources

The original Yamaha DX7 can store a bank of 32 voices internally.

Yamaha DX7 Patches

Here are some places you can download DX7 sounds:

Coffeeshopped has a free download of 32 drum patches for the DX7.
Bobby Blues offers a few massive downloads of thousands of DX7 patches, for free.
Encyclotronic had a download of a bank of patches designed by Brian Eno, from a 1987 Keyboard Magazine Interview, but those seem to be no longer available for download. I've re-created these patches using Patch Base, and you can download them here: