What is better 1 ssd 500gb or 2 ssd 250gb?

Question

Solid State Drives

At the moment, here is the hardware:
CPU : Intel® Core™ i7 7700K
Motherboard : ASUS Z170 - P
GPU : ASUS GeForce GTX 1080 Ti ROG - Strix 11GB
GPU : ASUS GeForce GTX 1060 ROG - Strix 6GB
RAM : KINGSTON HyperX FURY Black | DDR4 24GB ( 2x8GB | 2x4GB ) 2800Mhz
SSD : Kingston SV300S37A 60GB
HDD : WDC 1TB Caviar Blue
PSU : ATX Thermaltake SMART DPS G 750W
Case : Deepcool Kendomen Red
Fan Case : Standard ( Case )
Cooler : Be Quiet Silent Loop BW002 240mm
Monitor 1 : Samsung 24``
Monitor 2 : ACER 19``
OS : Windows 10 Pro 64 - Bit
The puzzle itself.
60GB SSD is absolutely not enough Windows + a couple of programs and everything remains free 10-5GB I already burn, that there is not enough space !!!!
Considering a purchase: SSD
250 Gb M.2 2280 M Samsung 960 EVO Series (RTL) V-NAND TLC
Price 100 bucks or 7-8 thousand rubles
SSD m2 for 250 this and another 1 SSD 3.0 regular for 250GB for example this one:
SSD 240 Gb PCI-Ex4 Kingston KC1000 MLC
For Windows and its programs. And for 60GB on Avito to merge for pennies?
I want a reasoned answer please, if not difficult.

Answer 1

Everything depends on the tasks.
If it's just a personal computer for office work and toys - there's no difference, any SSD can handle it.
It's just more capacious and easier to use.
For some special tasks it is often much more profitable to have two. Sometimes it's better to have one but a good one.
You just need to understand that, for example, a TLC disk shows the declared speeds only while the cache is working, that is, for a very short time. Then it sags sharply, and is restored only after a fairly long period of inactivity.
Other things being equal, two disks will be faster than one, but this needs to be correctly distributed - in everyday tasks, nobody needs this and it makes no sense.
If you want a really fast drive -
1) The capacity of the disk should be noticeably larger than the amount of data you will store on it.
Take a disc with a margin, never buy back to back.
2) Leave a reserve (over provisioning) - even if TRIM works for you, and it should be of such a size as to cover the possible large amount of recording. And then you will be sure that your drive will produce smooth and high speeds in any situation. Although in most household tasks, TRIM and a small reserve left by the manufacturer do an excellent job.
3) Get TRIM to work, and check if it works (enabled, it doesn't mean it works)
This is important. But here you need to understand - if the disk is filled to capacity TRIM is practically useless, the more free space, the more sense from TRIM.
4) If you often have situations when very large amounts of data are written to the disk, look towards MLC disks with a good controller, a powerful processor, and a decent amount of RAM, they hold the load much longer but also cost more.
5) Do not store cold data on the SSD - long-term storage data for which the access speed is not critical.
Various kinds of archives, backups, home photo / video, etc.
Place hot data on it - that is constantly read, written, changed, for which access speed is critical.
According to your situation - if you take two disks, you will need to leave enough free space on both disks.
As a result, you will get more fuss, and less real space.
At the same time, with two disks, by fiddling, you can achieve very fast execution of a program.

Answer 2

It is better to take one for 500.
Firstly, it will be faster than 250.
Secondly, having one continuous space is simply more convenient.