thank you guys help,i just paid $2400 for brand new/never open(with apple care) mac pro 6,1-8core-d700-32gb-256gb, i will upgrade to 128gb ram for another $500
here is reson:
1.i need 64gb ram at least
2.don't need powerful gpu
3.Energy savingonly 450w on this 6,1
4.i can't wait for new macpro
5.guess new macpro price will over $4900+tax
Wow, great price! Apple charges $2400 alone for just a 128GB RAM upgrade on an iMac Pro