QQZ3 is B0 50656, PRD microcode.i purchased X11DPi-NT rev. 2.01A with Gold 5218 QQZ3.
similar to QRA9,QRGE(QS) but no display. HWinfo does not know the QQZ3.
the QQZx are shipped by Intel in Confidential Evaluation Servers.
most QQxx are ES2 but PRD stepping.QQxx is ES. QRxx is QS.. In general for that generation.
QQRB = 8280M QS A0
QQRC = 8280L QS A0
QQCA = 8253 QS A0
you have include the third char, if this is one of '0123456789' its a ES2