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17r3: m.2 ports, number of channels and interface when using both ports
What type of M.2 ports are used, are they both PCIe 3.0, Both PCIe 2.0 or is one SATA III? For the PCIe ports, are they keyed "M" or "B"? if "M" keyed, are they both 4 channel or are they 2 channel or one of each? When both ports are in use, do they both stay in PCIe (2 or 4 channel) mode or does one drop to SATA, assuming the second M.2 connector can ever run in PCIe mode. Finally are the PCIe ports 3.0 or 2.0?
Alienware - Rodrigo
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October 12th, 2015 14:00
Hi,
You can find this information on the System Specifications manual.
Gelf1907
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October 12th, 2015 19:00
So unless you are trying to state that both the M.2 ports are actually 2 channel SATA 6Gb/s and not the 4 chanel PCIe Dell is advertising, no part of my question is answered by the system specification that has these 3 lines about storage:
Interface SATA 6 Gbps
Hard drive One 2.5-inch drive
Solid-state drive Two M.2 PCIe/SATA drives
Please note PCIe SSD cards will work in a M.2 SATA port, just at 6Gb/s (600Mb read) and not at 2000+ Mb/s read that a 4 channel M.2 PCIe can provide. Also SATA cards will also work in a PCIe port but at 6Gb/s.
Did I miss something in the System Specifications?
Alienware - Rodrigo
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October 13th, 2015 15:00
Hi,
I would need to contact our LV3 Tech Support department to confirm this for you. I will reply back as soon as they provide me with an update.
AntDX316
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October 13th, 2015 20:00
it doesn't matter much as even with my NVME and 5930k I can't tell the difference between it and a single Vertex 4 SSD
Gelf1907
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October 13th, 2015 21:00
Today any old SATA 2.0+ ssd is more than enough. But I am hoping to have this laptop and aga carry me for 3 to 4 years. By then it will matter. I think storage will be the bottleneck when DX12 is fully used and I am using a TB 3 ga and the AGA and the intel gpu and possibly the 980m. Not sure the 980m and the AGA can play together in DX12. I understand that in DX12 and early only one gpu could be on. We will see....