Pros: The seller was honest and delivered my items on time. The CPU was clean and ready to install right away. This is CPU x2 is running well and at the promised Turbo Boost. Highly recommend this for your Z820 PC.

Cons: No cons

Overall Review: The seller was honest and delivered my items on time. The CPU was clean and ready to install right away. This is CPU x2 is running well and at the promised Turbo Boost. Highly recommend this for your Z820 PC.

Pros: I love the speed and modular design of the case that makes it easy to upgrade. It got a really high score in cinebench. Rendering files in Premiere cc and Lightroom is amazingly fast when you pair this PC to a Raid 0-1 Dual SSD ( be aware that if you dont have a secondary power source, in case of a crash at RAID 0 your SSD may corrupt due to RAID 0) . Even the Quadro 2000 card held up really well with 4k editing and 3d modeling. So far this machines is a beast and for the price it can't be beat!

Cons: - Computer standard SAS drives have a very noticeable clicking sound from the disks moving back and forth to each other in RAID 0 or 1. ( replace them with an SSD and its fine . - Heavy , really heavy so plan to strap this PC in a area safely and buy this computer a uninterrupted power supply outlet. - Long boot times when installing a PCI e card. Fix this by going to the BIOS menu and organizing the boot order. Check with HP Z820 pdf online.

Overall Review: I would highly recommend this PC for content creators, casual gaming, auto-cad applications and Vray. Super fast workstation for and amazing price! :)