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Asrock 990 FX killer with Samsung SM951

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net2paul View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote net2paul Quote  Post ReplyReply Direct Link To This Post Posted: 24 Oct 2015 at 7:05pm

So why my Seq reading is half on yours ?
is some kind of UEFI settings  that I don't know ?
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Post Options Post Options   Thanks (1) Thanks(1)   Quote net2paul Quote  Post ReplyReply Direct Link To This Post Posted: 24 Oct 2015 at 9:18pm
Originally posted by aberdeen aberdeen wrote:


I noticed that you have 970 Performance that use PCIe Gen2 x4.
The killer series use PCIe Gen2 x2. 
So here is the difference.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aberdeen Quote  Post ReplyReply Direct Link To This Post Posted: 24 Oct 2015 at 11:48pm
avantage 97o performance vs 990 ...?????
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Post Options Post Options   Thanks (0) Thanks(0)   Quote net2paul Quote  Post ReplyReply Direct Link To This Post Posted: 24 Oct 2015 at 11:51pm
Originally posted by aberdeen aberdeen wrote:

avantage 97o performance vs 990 ...?????

YES
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aberdeen Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2015 at 12:03am
NONSENS.....
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Post Options Post Options   Thanks (1) Thanks(1)   Quote net2paul Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2015 at 12:11am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2015 at 12:18am
Originally posted by net2paul net2paul wrote:

U need to create a Windows 10 USB installation media with UEFI support (GPT)
Booting directly from USB . Ahci mode in UEFI and only SM951 connected, no other drive. 
Installing a bootable Win10 on it. 

How to create a Windows 10 USB installation media with UEFI support:


I've been using Windows installations on Intel systems for years by installing it from a USB flash drive with UEFI support. I've done that with Windows 7, 8, 8.1, and 10. The first board I did that on was an ASRock Z77 Extreme4.

I do this with standard SATA SSDs, and AHCI SM951s. My ASRock Z170 Extreme7+ board has two AHCI SM951s in RAID 0, that is the drive volume shown in my Disk Management picture. Since some users are posting benchmark results, here's some of mine of the RAID 0 OS volume:







The USB Windows 10 installation media I used with my Fatal1ty 970 Performance/3.1 is the same one I've used to install it on three different Intel systems. I've never had a problem installing Windows this way until I tried it on my AMD board.

You did not mention one thing that is essential for the system to really be UEFI/EFI booting. That is an option in our board's UEFI that must be set a certain way. That option is... Question

With that option set in my Fatal1ty 970 Performance/3.1 board's UEFI, the target SSD for the Windows installation is never seen by the Windows installer. That is the issue I have.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote net2paul Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2015 at 12:29am
Ask "aberdeen" , he use 970 Performance.
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Post Options Post Options   Thanks (1) Thanks(1)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2015 at 1:04am
Originally posted by aberdeen aberdeen wrote:

avantage 97o performance vs 990 ...?????


Originally posted by net2paul net2paul wrote:

Originally posted by aberdeen aberdeen wrote:

avantage 97o performance vs 990 ...?????

YES


net2paul is correct. That is simply because the M.2 port on the Fatal1ty 970 Performance is PCIe 2.0 x4, while the Fatal1ty 990FX Killer's M.2 port is PCIe 2.0 x2.

The difference between these two boards is not because of the chipset (990 vs 970) but simply due to the PCIe 2.0 lane allocation to the M.2 port.

As we know, the SM951 has a PCIe 3.0 x4 interface. So not providing that to this SSD will result in reduced performance. Using PCIe 2.0 x4 will not allow the SM951 to perform at its best, and using PCIe 2.0 x2 will result in a further reduction in performance, sorry to say.

A single SM951 in a PCIe 3.0 x4 M.2 port looks like this:




The Fatal1ty 990FX Killer board was released in April, 2014. That was before the SM951 and XP941 were available.

The only M.2 SSDs available at that time, if they even were available, were SATA M.2 SSDs. The PCIe 2.0 x2 M.2 interface was mainly designed for SATA M.2 SSDs, and is more than enough to allow them to perform at their best.

The Fatal1ty 970 Performance was released in November, 2014, and by then the Samsung XP941 was known to be coming. The XP941 uses a PCIe 2.0 x4 interface, so the M.2 port on the 970 Performance was changed to PCIe 2.0 x4.

Don't you hate how fast some PC components change sometimes... Sick
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Post Options Post Options   Thanks (0) Thanks(0)   Quote net2paul Quote  Post ReplyReply Direct Link To This Post Posted: 25 Oct 2015 at 3:13am
I think the best solution for this fast M.2 cards is to acquire a PCIe x4 M.2 card adapter.
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