Is it worth building a PC on xeon 2011-v3/v4?

Question

Iron

Now i3-6100 / 8gb ddr4 / 1080ti - which was enough for my eyes to work and play games.

I want to switch to a 2 processor system with a budget of up to 40t.r.

For what tasks I collect: For virtualization / main working PC. A typical home lab for storage / PBX / some services that I have never set up before. Raise AD/ wds id.
Accordingly, as I see it - the more cores / RAM, the better.

I have a server cabinet and a 4u case. It's scary enough to assemble on Chinese motherboards, so I'm looking at the used segment of two-socket supermicro eATX format. I plan to use a set of coolers from this case for passive cooling of processors.

I see the config like this: 2 prots e-26xx + 128 gb ddr3 ecc. + disks are inconsistent, the data is not super critical, so for now without a raid.

Questions for connoisseurs:

How adequate is it to assemble such an assembly? Or is it conditionally better to buy a new ryzen 2700 now and a 32 memory chip for it and then buy more memory as far as possible?

Is it worth it to pay extra for ddr4 memory?

How adequately does Windows work in everyday tasks at a low frequency, but with a large number of cores?

Does it make sense to save and take e-5xxx processors?
If there is experience in the actual operation of such iron and its choice, I will gladly read your opinion on this matter.

Answer 1

outdated server solutions are only good for one thing - ecc memory, it will be very difficult to find modern desktop solutions with its support.
Also, server motherboards come with a bonus of 10GB network, to some this will seem like a good bonus, but this is probably not your case.
everything else is treading water.
I see multiprocessor systems 'for home' only for devops experiments, tests and hosting at the start of my projects, running several virtual machines that do not interfere with each other, etc. generally obscure things to the layman.
as always, before you decide what you need to buy - formulate more precisely what tasks you will solve.
ps for 40t.r. you can't buy 128gb ram with cpu and motherboard sorry
and so, the speed of the processor (single thread) must be chosen as high as possible in principle in terms of money, secondly, choose the amount of RAM in terms of money, the rest according to the residual principle (I am silent about the video card, it's just that time is now)

Answer 2

I'm sitting on a xeon 2011-v2
e5-2680 + 64 GB
HP z420
cores 8 · Number of threads 16
You can advise HP z440 z640
But I don't see the point in such a threshing machine z640. there are more places and in very rare cases it all works.
And take a closer look at the peak per core Xeon E5 1660 v2 or 1680
UPD
Why 2 processors? The only thing is that if it rests on memory, and then I had a virtual machine spinning at 96 gb at the same time, it juggled normally.

Answer 3

Well, the Chinese are not so scary. Some kind of HUANANZHI X99 is quite a good option.