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View Full Version : ROG Strix Z370-E - M2 SSD Explanation



JimmyH
08-16-2018, 04:09 AM
My system details are incorrect. I have edited my profile but they have not seemed to update yet.



I recently upgraded my PC due to an unfortunate incident. I went with the ROG Z370-E.

It comes with two M2 slots, one behind a cover, and another in the centre of the board. I am using the one under the cover or the M2_1 slot.

Could someone please explain something to me.

M2_1 shares SATA port 1 when it uses a SATA mode device, and M2_2 shares SATA port 56 when it uses PCIE mode device in X4 mode.

What is X4 mode, and is there a noticeable difference between SATA mode and PCIE mode?

My last question is in relation to temperatures. I live in Townsville, Australia which is sub-tropical. At the moment we are coming out of winter, about 26 deg C or 79 deg F, not hot enough for aircon. My SSD is sitting at 60 deg C and the specs say a max of 70 deg C, should I be concerned?

I actually have a Hyper M2 x16 Card, would this be a cooler option??

Thanks in advance.

xeromist
08-16-2018, 04:36 PM
x1 vs x4 is the number of lanes and equates to bandwidth. Depending on the drive you may find that it is limited by an x1 connection.

There are many differences between SATA and PCIE. First, your drive is one or the other so it's not just a random setting. They share the M.2 connection standard but work very differently. SATA is just like a 2.5" SATA SSD and it connects to the SATA controller. NVMe (PCIe) drives are PCI devices like a graphics card and they either connect to the chipset or directly to the CPU depending on several factors. Generally speaking NVMe drives can be significantly faster because they are not limited by the SATA controller.

JimmyH
08-16-2018, 08:20 PM
x1 vs x4 is the number of lanes and equates to bandwidth. Depending on the drive you may find that it is limited by an x1 connection.

There are many differences between SATA and PCIE. First, your drive is one or the other so it's not just a random setting. They share the M.2 connection standard but work very differently. SATA is just like a 2.5" SATA SSD and it connects to the SATA controller. NVMe (PCIe) drives are PCI devices like a graphics card and they either connect to the chipset or directly to the CPU depending on several factors. Generally speaking NVMe drives can be significantly faster because they are not limited by the SATA controller.

That explains a lot mate. I had my new NVME is M2_1 which was set to SATA. Thanks.