HP Z820 Pro Workstation still any good?

hi guys help. found affordable local xeons workstations hp z820 , z800. installing 1 gtx 770 , gtx 1080 , 1 hd5770 hp including deck link mini monitor card has 1120w power supply , z800 has 850. machines old? , guys time , understanding

hp z820 pro workstation, - 6 cores - 12 threads , aes, vt ht 15mb -32/64 bit
fast hexa 6 core 2.50ghz/3.0ghz xeon(e5-2640) z820 32gb 2tb w10
fast hexa 6 core 2.50ghz- intel e5 xeon (e5-2640 )- 3.0ghz turbo
hp z820 pro workstation, - 6 cores - 12 threads , aes, vt ht 15mb -32/64 bit
32.0gb ecc registered ddr3 memory(supports 512gb - 16 ram slots)
2.0tb sata (2.0tbx1) hard drive dvdrw, dual gigabit network/ethernet sound.
6 gb/s sata/sas ports, 6 sata 8 sas ports. 4 usb 3.0 ports. 6 usb 2.0 ports. 6 pci express slots. 768mb nvidia quadro fx1800 pci express videocard 2 dvi(can display dual monitors)
silver & black case. 1120w powersupply. includes: keyboard & mouse.
windows 10 pro 64 bit coa/installed

product description:
designed bmw, hp z820 workstation ultra high end solution designed complex computing environments require outstanding performance, expandability , capacity. professional workstation highest end xeon processors, built graphics, cad/cam, gaming, , industrial applications. supports sata/sas, intel vt, ht 16 ram slots, max 512gb memory. usb 3.0, 6 gb/s sata/sas supported.
includes 1 processor, supports 2 processors, 6 cores - 12 threads in window 7/8/10, , available virtualization.

or

12 cores 2x hexa 2.80ghz/3.20ghz hp z800 pro 32gb 2tb sata win10
$689.00

fast hexa 12 cores - 2xhexa 6 core 2.80ghz/3.20ghz- intel xeons(i7-x5660s-westmere)- vt ht aes
hp z800 pro workstation, - 12 cores - 24 threads , turbo, aes vt ht 12mb -32/64 bit
32.0gb ecc ddr3 memory(supports 192gb - 12 ram slots)
2.0tb sata (2.0tb x 1) hard drives dvdrw, dual gigabit network/ethernet sound.
6 sata ports, 8 sas ports. 9 usb 2.0 ports. 6 pci express slots.
1.0gb amd hd radeon pci express videocard (can display dual monitors)
silver & black case. includes: keyboard & mouse.
windows 10 pro 64 bit coa/installed

 

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