Is ECC ram a must-have in eve-ng of a bare installation?

[newabc]

I has been using gns3 with a 4-core i7 cpu and non-ecc ram(gns3 with gns3-vm of virtualbox, both in linux and windows) for several years and I am preparing to turn to eve-ng with bare installation.

I did know that ECC is very important for a machine running 24/7. But a simulation lab will be used for up to only several hours each time then it will be saved and quit. Is it ok with non-ecc ram?

2nd question: Does eve-ng depend on the number of cores or single core speed with IOSv images?

By the way, the i9 with maximum 128gb non-ecc ram is great if ecc ram isn't a must-have. If ecc ram is needed, I may turn to amd threatripper, and maybe some images runs with error as what I research in google and this forum.

I will appreciate any helpful opinions.

[Uldis (UD)]

In the EVE main driver is CPU!
If you have weak CPU lets say 4 virtual core (threads) only, RAM will not help here.
It is myth if people thinking I have a lot RAM and I can run. NO, if your CPU will not handle node processes and cores, RAM is useless. No matter ECC or not.

importance of paranmeters:
1. Good CPU
2. Fast HDD ( SSD preffered) it will raise nested nodes like vIOS perforamnce a lot
3. and only then is RAM

It is not EVE depends of Cores, but images you want to run on it.
For example i7 CPU with 4 threads will be eable to stable run x4-6 vIOS nodes, or x3 CRS nodes.
Or 30-40 IOL nodes.
CPU is ALL.
you can calculate what virtual CPU cores you need to run specific lab setup using this calculator.


AMD is not supported for EVE! It has serious problems to run nested KVM images.

Regards
UD

[newabc]

The calculator is so great!
Thank you so much!

A 2nd hand dual E5-266x v3/v4 workstation seems cannot provide more cpu performance than brand a new i9 series workstation which has much lower price. So an i9-7900x - 7960x will be a good investment for a budget lab even it cannot support ECC?

[Uldis (UD)]

Personally i woul not choose i9
its weak comparing with e5-2650v3

i9 is workstation and not server cpu
and ECC ram is necessary only for you sems so

[newabc]

Personally i woul not choose i9
its weak comparing with e5-2650v3

Do you mean when it come to e5 v3/v4 or newer with a basic frequency over 2.3Ghz, the number of cores is more important than the single thread performance in EVE?

I will look at the 2nd hand e5 v3/v4 workstation now.

and ECC ram is necessary only for you sems so

What does "sems" stand for?

Anyway, thanks, UD

[Uldis (UD)]

ECC does not play big role...
i9 CPUs looks not bad, but very important how many cores are on it...
so comparion v3 or v4 cpus with i9 is ok..
just keep in mind for Cores on it..
some models i9-7900X i saw has 10 cores (20 vCPU) so not bad at all...

UD