Hi all,
i have a question regarding my new ASUS Z170-A and the Samsung SM951 / AHCI Type.
I setted up this new rig just with the SM951 on the M.2 slot and OS setted to "other" to prevent the installation of secure boot. I could install Windows 10 and afterwards all additional hardware like DVD drive and Palit GTX 750 video card.
So no problemas at all. There are endless reports from user with no luck with a similar setup.
When i enter into the BIOS (latest version 1302) i could not change the M.2 slot from SATA Express to to M.2. Always after a new boot i will be defaulted to SATA Express.
When i open the supplied ASUS tool for Windows it will display that the SM951 runs in SATA III.
There is a lot of user information but no from ASUS regarding this confusing explanation for this setting within the BIOS.
Quote from another forum:
=========================================================
The M.2 slot shares Sata mode with Sata Express. Which means you can have sata on sata express and pcie on the m.2 or the other way around. In the bios settings in the advanced on-board section there is an option to configure these in "m.2 and Sata Express Mode Configuration". In m.2 mode it puts the Sata Express in PCIe mode and the m.2 slot in Sata mode, if sata express mode is selected then Sata Express is put in sata mode and m.2 slot is in PCIe mode. That last one is the mode you want to select to have the SM951 work in PCIe mode off the m.2 slot. I believe that's the way it works.
=========================================================
I ran a CrystalDiskMark5 test to compare it with:
https://www.pugetsystems.com/labs/ar...M-2-Drive-703/
My results are:
-----------------------------------------------------------------------
CrystalDiskMark 5.1.0 x64 (C) 2007-2015 hiyohiyo
Crystal Dew World : Crystal Dew World
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes
Sequential Read (Q= 32,T= 4) : 2077.613 MB/s
Sequential Write (Q= 32,T= 4) : 1652.257 MB/s
Random Read 4KiB (Q= 32,T= 4) : 725.067 MB/s [177018.3 IOPS]
Random Write 4KiB (Q= 32,T= 4) : 425.264 MB/s [103824.2 IOPS]
Sequential Read (T= 1) : 1686.539 MB/s
Sequential Write (T= 1) : 1561.801 MB/s
Random Read 4KiB (Q= 1,T= 1) : 45.622 MB/s [ 11138.2 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 146.144 MB/s [ 35679.7 IOPS]
Test : 1024 MiB [C: 6.3% (30.0/476.4 GiB)] (x5) [Interval=5 sec]
Date : 2016/12/21 10:24:35
OS : Windows 10 [10.0 Build 10240] (x64)
-------------------------------------------------------------------------
QUESTION:
Is my SM951 running on full speed provided by the Z170-A (PCI-E 3.0 x4)? The IOPS values are much lower then the abouve mentioned review is reporting.
Thanks for your answers!
Christian
i have a question regarding my new ASUS Z170-A and the Samsung SM951 / AHCI Type.
I setted up this new rig just with the SM951 on the M.2 slot and OS setted to "other" to prevent the installation of secure boot. I could install Windows 10 and afterwards all additional hardware like DVD drive and Palit GTX 750 video card.
So no problemas at all. There are endless reports from user with no luck with a similar setup.
When i enter into the BIOS (latest version 1302) i could not change the M.2 slot from SATA Express to to M.2. Always after a new boot i will be defaulted to SATA Express.
When i open the supplied ASUS tool for Windows it will display that the SM951 runs in SATA III.
There is a lot of user information but no from ASUS regarding this confusing explanation for this setting within the BIOS.
Quote from another forum:
=========================================================
The M.2 slot shares Sata mode with Sata Express. Which means you can have sata on sata express and pcie on the m.2 or the other way around. In the bios settings in the advanced on-board section there is an option to configure these in "m.2 and Sata Express Mode Configuration". In m.2 mode it puts the Sata Express in PCIe mode and the m.2 slot in Sata mode, if sata express mode is selected then Sata Express is put in sata mode and m.2 slot is in PCIe mode. That last one is the mode you want to select to have the SM951 work in PCIe mode off the m.2 slot. I believe that's the way it works.
=========================================================
I ran a CrystalDiskMark5 test to compare it with:
https://www.pugetsystems.com/labs/ar...M-2-Drive-703/
My results are:
-----------------------------------------------------------------------
CrystalDiskMark 5.1.0 x64 (C) 2007-2015 hiyohiyo
Crystal Dew World : Crystal Dew World
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes
Sequential Read (Q= 32,T= 4) : 2077.613 MB/s
Sequential Write (Q= 32,T= 4) : 1652.257 MB/s
Random Read 4KiB (Q= 32,T= 4) : 725.067 MB/s [177018.3 IOPS]
Random Write 4KiB (Q= 32,T= 4) : 425.264 MB/s [103824.2 IOPS]
Sequential Read (T= 1) : 1686.539 MB/s
Sequential Write (T= 1) : 1561.801 MB/s
Random Read 4KiB (Q= 1,T= 1) : 45.622 MB/s [ 11138.2 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 146.144 MB/s [ 35679.7 IOPS]
Test : 1024 MiB [C: 6.3% (30.0/476.4 GiB)] (x5) [Interval=5 sec]
Date : 2016/12/21 10:24:35
OS : Windows 10 [10.0 Build 10240] (x64)
-------------------------------------------------------------------------
QUESTION:
Is my SM951 running on full speed provided by the Z170-A (PCI-E 3.0 x4)? The IOPS values are much lower then the abouve mentioned review is reporting.
Thanks for your answers!
Christian
