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Please help me make sense of this M.2 and SATA chart

post #1 of 9
Thread Starter 
I have a Gigabyte GA-Z170XP motherboard and I have an M.2 SSD and I'm trying to figure out which SATA ports are disabled when I install an M.2 drive. But this chart is confusing because of the layout. Can someone help me make sense of this thing?
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post #2 of 9
It seems to me that all SATA ports remain enabled. Where did you read that SATA ports are being disabled when you install an M.2 drive?
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post #3 of 9
Thread Starter 
Quote:
Originally Posted by ronnin426850 View Post

It seems to me that all SATA ports remain enabled. Where did you read that SATA ports are being disabled when you install an M.2 drive?

This is my first time ever owning an M.2 drive and a z170 motherboard so I am just assuming based on my problems with my previous z170 motherboard that I had to send back due to a problem, that certain SATA ports are disabled when you install an M.2 drive. And then I read this chart and it looks like another language. I'm coming from an FX 8350 build that I've had for 4 years so I'm a little rusty on the new technology.

edit: This is my 2nd z170 board but I had to send the first one back. This is my first time using anything z170
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post #4 of 9
M.2 can run in either mSATA mode, or PCI-e mode (x2 or x4).

When running a mSATA mode (AHCI) SSD in your M.2 slot, it disables the SATA3_0 slot, as it is using it for the M.2 drive.

If the M.2 SSD runs in PCI-e mode, it doe snot disable any SATA ports.
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by KyadCK View Post

M.2 can run in either mSATA mode, or PCI-e mode (x2 or x4).

When running a mSATA mode (AHCI) SSD in your M.2 slot, it disables the SATA3_0 slot, as it is using it for the M.2 drive.

If the M.2 SSD runs in PCI-e mode, it doe snot disable any SATA ports.

Ok thanks. Is it something I can select in the BIOS? I prefer to have no bottlenecks so I would like PCIe mode. although I know this SSD is not going to be bottlenecked because it's not fast enough to be.
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post #6 of 9
Quote:
Originally Posted by Thready View Post

Quote:
Originally Posted by KyadCK View Post

M.2 can run in either mSATA mode, or PCI-e mode (x2 or x4).

When running a mSATA mode (AHCI) SSD in your M.2 slot, it disables the SATA3_0 slot, as it is using it for the M.2 drive.

If the M.2 SSD runs in PCI-e mode, it doe snot disable any SATA ports.

Ok thanks. Is it something I can select in the BIOS? I prefer to have no bottlenecks so I would like PCIe mode. although I know this SSD is not going to be bottlenecked because it's not fast enough to be.

No. SSDs are one or the other.

Example:

Samsung 850 EVO = M.2 ACHI (mSATA mode).
Samsung 950 Pro = M.2 NVMe (PCI-e mode).
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post #7 of 9
Thread Starter 
Quote:
Originally Posted by KyadCK View Post

No. SSDs are one or the other.

Example:

Samsung 850 EVO = M.2 ACHI (mSATA mode).
Samsung 950 Pro = M.2 NVMe (PCI-e mode).

Ah. That's good to know. So it looks like SATA port 0 is disabled. That's fine because I only have 4 other drives anyways.
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Zen
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post #8 of 9
Quote:
Originally Posted by Thready View Post

Quote:
Originally Posted by KyadCK View Post

No. SSDs are one or the other.

Example:

Samsung 850 EVO = M.2 ACHI (mSATA mode).
Samsung 950 Pro = M.2 NVMe (PCI-e mode).

Ah. That's good to know. So it looks like SATA port 0 is disabled. That's fine because I only have 4 other drives anyways.

M.2 sounds like it's a new port, but it's the same jack used in Laptops for wireless cards and mSATA. what is new to us is M.2 2280

All of these are M.2:


Has a graph that helps explain:
http://arstechnica.com/gadgets/2015/02/understanding-m-2-the-interface-that-will-speed-up-your-next-ssd/
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post #9 of 9
Thread Starter 
Quote:
Originally Posted by KyadCK View Post

M.2 sounds like it's a new port, but it's the same jack used in Laptops for wireless cards and mSATA. what is new to us is M.2 2280

All of these are M.2:


Has a graph that helps explain:
http://arstechnica.com/gadgets/2015/02/understanding-m-2-the-interface-that-will-speed-up-your-next-ssd/

You know I try to cut the PC manufacturers so much slack but even for experienced builders (I've been building for about 8 years) somethings are unnecessarily confusing. I think that's why communities like OCN exist. thumb.gif
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