So what do you think does it make sense?
That's a bad deal honestly.
You can either build your own 2 cpu build based on 2670 V1 Xeons like in guide by Juraj, as mentioned.
Or even better, get a X99 based system on Xeon E5-2683 V3 QS cpu which will give you same or better speed than those two V1 xeons.
CPU -
Xeon E5-2683 V3 QS - around 320euro
MB -
Asrock X99 WS - around 320euro (based on ebay sellers listing Asrock boards as most compatible, can probably even go with cheaper model)
RAM -
two 16Gb DDR4 sticks - around 210euro (either separate or kit, ECC or not depending on price, as the MB/cpu work with either. Could even got with 8Gb sticks if 64Gb total is enough and cheaper)
PSU -
Corsair RM850 - around 150euro (or other psu at least 750w with gold 80+ rating and good reviews)
CASE -
Fractal Define R5 - around 100euro (can substitute for any case if sound dampening isn't required)
COOLER -
Cooler Master Hyper 212 Evo or similar - around 30euro (more than enough to cool a Xeon even under long heavy load)
SSD -
Samsung 850Evo 250Gb - around 100euro
HDD -
any WD or HGST 2Tb drive - around 95euro
GPU -
Nvidia Geforce 1070 - around 410euro (best price/performance currently, even overkill if mainly for work)
Total =
1735euro, so you can buy Windows license and/or switch some stuff around. And everything except CPU is new. If you find used parts still with warranty, you could easily have enough spare money to double the ram or any other part.
V1 xeons are ok, but only if you get them cheap.