How to choose a server?

Question

Nginx

What is better to choose:
1st option: a server with 2 sockets 2nd
option: 2 servers with 1 socket each.
According to those characteristics are all the same. That is, if in the 1st version 64GB of RAM, then in the 2nd version 2x32GB.

As far as I understand, option 1 wins.
And in terms of performance? 2nd?

Better advise a normal server, up to 55000r.
What is better ready-made version than hand-assembled?
If you collect it yourself, you can save from 10k r or get more powerful.
I want to see a couple of ready-made options and advice from the masters "I'm a beginner, I'm interested and need it."
I like to read, so I can have a couple of articles on this topic)

Thank you in advance, for your understanding too.
u1 format server.

Answer 1

Depends on tasks.
For the price, the first option (with 2 CPUs in one box), of course, is cheaper, other things being equal.
In terms of reliability - so-so, usually 2-3 PSUs in boxes, 1 percent can also fly out, network card 2 usually, memory with ECC can fly out ... However, if the mother burns out, then that's it, but on two servers you have one will remain for sure =)
In terms of performance - completely and completely from tasks. You can write an application so that it can work effectively on two machines, or you can not write it =)
For example, distributing static from two servers will be much faster (and it's easy to distribute it from two servers). But the application server scheme on one piece of iron + database on the second will be slower than one server if one server does not run into IO.

Answer 2

Look at the budget. Go to the same Yandex market.
Selection by stages.
1. Choose a motherboard (take a server one, otherwise I'll have problems later.)
Server ones differ in the location of the RAM bars. And the cost of such from 8k p.
Get it with LGA2011 socket. They are more expensive, but this is the future. (Faster, etc.)
2. Choose a processor, look at the socket (i7 or xeon may be suitable)
3. When you chose the percent. then find out about it. And already pick it up (look at the cleanliness, the number supported by the motherboard and how much the processor can process.
4. Selection of disks. It’s better to use sas for the system, ssd is not worth it .. And then it depends on the situation.
5. It’s time to revive our creation. Power supply. Here again it all depends on what you have chosen, the minimum is 300w... I think you will need more than 400w.
And all this can be crammed into u1 as you wish.
I must say right away that a normal case without a power supply unit will cost from 6k.
Pay attention to the size of the mother ...

Answer 3

"As I understand it, the 1st option wins in terms of price.
And in terms of performance? 2nd?"
Most likely 1st by price, by performance depends on your application, but most likely 1st.
"Better advise a normal server, up to 55000r." - look towards supermicro, configure.
"Which is better than a ready-made version than a hand-assembled one?" - the fact that all components are correctly selected and the guarantee for the device "as a whole" does not need to be configured according to HCL (not all kits are available).
"If you assemble it yourself, you can save from 10k r or get more powerful." - it is possible, but there are also reverse examples when people lost money and even their jobs.
A couple of ready-made options - 3nity.ru/viewforum.php?f=1&sid=d94e1860402c37a54a5...
Advice for you - buy ready-made or order assembly from the "integrator".