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Your choices for the M.2 slot are (in performance order):
A. NVMe M.2 SSD
B. SATA M.2 SSD
C. Optane Memory module
Your choices in the 2.5" SATA drive bay are (in performance order):
- SSHD (a hybrid drive that has its own internal SSD to accelerate the HDD portion of the drive)
- HDD (which can be accelerated by a Optane Memory module)
From an overall performance standpoint, your ordered list of choices (IMHO) are A1, A2, A3, A4, B1, B2, B3, B4, D1, C2, C3, D2, D3.
Before anyone argues with me, note the following regarding why I ordered the way I did:
- For secondary storage, I prioritize having some as being better than not having any.
- The performance of Optane depends upon usage patterns and does improve over time. Does it ever get better than a SATA SSD? Yes, it certainly can, but this isn't the case initially, so I leaned the other way.
- Fact is, I am just not happy with the instability that appears to be happening a lot with Optane.
Hope this helps,
You've got choices A, B, C and D for what to do with the M.2 slot and choices 1, 2, 3 and 4 for what to do with the 2.5" SATA drive bay. Each entry in my performance list is a combination of a choice of what to do with the M.2 slot and a choice of what to do with the 2.5" SATA drive bay. A1, for example, says use M.2 NVMe SSD and 2.5" SATA SSD.
Yes, one of the choices for what to do with the M.2 slot is to leave it empty. If you then put a SSD in the 2.5" drive bay, you end up with choice pair D1. You can see where, in the overall performance list, the D1 pairing falls.
Make sense? Clear as mud?
Thanks for the explanation.
It makes sense to use empty m2 slot with SSD drive in a NUC kit.
There may be a comparative performance benchmark for what you have already explained.
If someone also posts that performance comparison benchmark with its prices then it would help before choosing a combination of Intel NUC kit.
It's really hard to choose a system without using it as per your user/application requirements.