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B350 and Nvme

post #1 of 7
Thread Starter 
i recently learned that, apparently if you chose to use nvme in the m.2 slot, you lose 2 sata slot. but can you mitigate this by using the nvme on one of the pcie? such as a m.2 to pcie addon?
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RYZEN
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post #2 of 7
yes nvme slots on motherboards can wind up sharing lanes. not all do. it depends on the motherboard.

There are add in cards that let you plug nvme drive or drives in and then plug that into a pcie slot
nvme drives are not always pcie though.
sata based nvme drives are going to have sata speeds regardless of how you get them connected.

First nvme slot on b350 though. should not have lane sharing. Second, if they have another, always shares with something. So far at least.
Edited by yendor - 4/15/17 at 4:00pm
post #3 of 7
Quote:
Originally Posted by yendor View Post

yes nvme slots on motherboards can wind up sharing lanes. not all do. it depends on the motherboard....

In my GigaByte AB350m using the M.2 slot as a PCIe x4 NVME (32 Gb/s) uses the two SATA lanes native in the Ryzen CPU. There are still the 4 SATA ports available from the chipset itself. I thought that is what the motherboard design has to accommodate. Since many of the b350's are put in mATX boards I think that many mfr's skimp on the extra SATA ports in in reasoning one doesn't need so many drives in the application.

If I put an M.2 SATA SSD (6 Gb/s) in the slot it would use one of the SSD ports from the chipset if I recall right.
post #4 of 7
Thread Starter 
i have all 6 slots occupied, i thought i can add in a nvme but read i will lose 2, thats why i asked if i can bypass this by using a pcie add on m.2
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RYZEN
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x58
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Mac Pro 4.1
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post #5 of 7
Quote:
Originally Posted by kckyle View Post

i have all 6 slots occupied, i thought i can add in a nvme but read i will lose 2, thats why i asked if i can bypass this by using a pcie add on m.2

Answer is still yes, you can.
.
post #6 of 7
Thread Starter 
sweet got to know, gonna go find a good pcie 3.0 4x m.2 adapter thn
RYZEN
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x58
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Mac Pro 4.1
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RYZEN
(13 items)
 
x58
(14 items)
 
Mac Pro 4.1
(8 items)
 
CPUMotherboardGraphicsRAM
Ryzen 1700x Gigabyte AM4 MICRO  GTX 1080 TI  G.SKILL 3200mhz  
Hard DriveCoolingOSMonitor
Crucial m4  Cryorig R1 universal  Windows 10  Dell p2715Q 4k 
KeyboardPowerCaseMouse
Corsair k75 RGB MX Blue  Seasonic PRIME 750  Corsair 800D  logitech g9 
Audio
Audioengine A2+ 
CPUMotherboardGraphicsRAM
Intel Xeon x5675 4.4ghz @1.3v gigabyte X58A-UD7 rev1 EVGA GTX 1080 Crucial Ballistix 2x8gb 1600mhz 1.35v CL7 
Hard DriveCoolingOSMonitor
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KeyboardPowerCaseMouse
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post #7 of 7
Save the search. pcie slots are 2.0 x1 and x4 on the 100 dollarish gigabyte boards.

Sata III pcie 2.0 cards on the other hand come in 2.0 x1 and x4 flavors and you might not lose any speed at all. .



- Edit In other words hook the 2 sata devices from the disabled headers into an addon card and use the motherboard's nvme . That way you get nvme 3.0 x4 at full speed.


https://www.newegg.com/Product/Product.aspx?Item=N82E16815124152&cm_re=pcie_2.0_sata_adapters-_-15-124-152-_-Product for example.

and others. lots of others ..
Edited by yendor - 4/15/17 at 6:58pm
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