New PC configuration
So in the end I've decided to upgrade my PC hardware. New configuration is:
|CPU:||AMD Ryzen 5 1600||$266.4|
|Motherboard:||MSI B350 PC MATE||$118.9|
|RAM:||Kingston HyperX FURY|
[HX424C15FB2K4/32] 32 Gb
|Video card:||MSI GeForce GTX 1050 Ti OC||$175.7|
|Power supply:||Aerocool VP 650W||$58.4|
Total $948.9 (53385 rubles) on current ruble - US dollar rate.
I've looked at Intel processors but Ryzen seems better for my tasks. I don't need good gaming PC but I need many cores. The motherboard I've chosen has two PCIe slots so later want to add another video card and monitor only for guest OS.