DL380G5 not more compatibly with vsphere 6.0

Hi, all my test servers DL380G5 or DL585G5 are not more working with vSphere 6.0. So I can throw through the windows all this servers ? It says unsupported Hardware CPU with a device number. Is there no "trick"  to install vsphere 6.0 on an "older" hardware? I know for productiv environment it is clear to use supported hardware, but this is only a testsystem.

Thanks a lot!

regards

Novell1