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Z890 Hero - Samsung 9100 pro speed issues

Aggiebob98
Level 9

‎03-22-2025 10:40 PM - edited ‎03-23-2025 06:01 AM

Hey everyone. I picked up the new Samsung 9100 4tb ssd (pcie5) running in slot m2_1. I’m running the latest firmware, intel 285k chip etc.  The reviews online are usually getting the advertised 14800 read/write speeds, but mine are topping out at 11800 or so. I have changed the PCIE setting from “auto” to “gen5” even and it didn’t help.  I moved it to the m2_3 slot and the speed improved very slightly but also downgrades my video card from x16 to x8. Looking for some advice here as something is certainly odd! Too many reviews are nailing these advertised speeds on crystal mark. Thanks!

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24 REPLIES 24

ssuper2k
Level 9

‎03-23-2025 03:00 AM

I will get mine tomorrow. (2TiB version)

If I don't get full (14k) speeds on my 285k/hero, I will try it also on my 9950x and compare.

Aggiebob98
Level 9
In response to ssuper2k

‎03-23-2025 03:35 AM - edited ‎03-23-2025 06:01 AM

Thanks, pls do!  I used crystalmark as my basis..Samsung's magician is always even lower than that!

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Cblan1224
Level 8

‎03-23-2025 08:00 AM

Any luck? I have the 4tb but I may not get my pc up and running until after my return window closes. 

Did you have a different pcie 5 drive installed to m.2_1 prior to this? Have you used any cloning software?

5090 Astral (Custom Rog Waterblock by Bro Cooling)/ X870E Apex / Thor 1600w Titanium III / Azoth Extreme / Harpe Extreme / Delta 2 / 9950x3d (Signature V3, Direct Die) / DDR5-8000 (Supercool Direct Chip)
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Aggiebob98
Level 9
In response to Cblan1224

‎03-23-2025 09:03 AM

Nope, previous was a Samsung 980 (PCIE4) so bad test

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ssuper2k
Level 9
In response to Aggiebob98

‎03-24-2025 12:12 PM

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Aggiebob98
Level 9
In response to ssuper2k

‎03-24-2025 12:25 PM

Thanks for the reply!  Odd that others are getting the full 14800 read/write that I am seeing!!!  Are you running your OS on the 9100?

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ssuper2k
Level 9

‎03-24-2025 12:35 PM - edited ‎03-24-2025 12:36 PM

@Aggiebob98 wrote:

Odd that others are getting the full 14800 read/write that I am seeing!!!

Do they have Arrow Lake too?
I may try it on my AMD system later.. but getting lazy..


@Aggiebob98 wrote:

Are you running your OS on the 9100?

Yes, just reinstalled W11 24H2 on M.2_1
It might even be updating things in the background, thus a bit worse read.
Will rerun tests later

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ssuper2k
Level 9

‎03-24-2025 01:18 PM

No change, still 12k read, 13k write

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