will nvme affect GPU?

MaXxBoulton · 26 Mar 2019 at 19:15

I am upgrading an systems dead SSD and i am thinking of using an nvme pcie 3.0 x4 drive, but will this make the GPU run in pcie 3.0 8x

the CPU is a Kirby Lake i7

Minstadave · 26 Mar 2019 at 19:24

It should be fine as NVME will use PCH PCIE lanes.

You could just read the manual though.

MaXxBoulton · 26 Mar 2019 at 19:46

Minstadave said:
It should be fine as NVME will use PCH PCIE lanes.
You could just read the manual though.

its not my system and it not yet in front of me so not 100% on the board revision, my friend just says its an sata m.2 drive in the system now and its only showing 47% health. if the board dose support nvme he would like to add one.
we just didnt understand the situation with pcie lanes.

LuckyBenski · 26 Mar 2019 at 20:14

In general, the PCIe lanes from the x16 slot are direct to CPU and are shared with a second x16 SIZED slot only when a card is inserted, to give x8 lanes to each slot. Motherboard M.2 PCIe lanes are generally from the chipset/PCH so don't affect CPU PCIe lanes.

Best to read the motherboard though - for instance using M.2 slots for PCIe can take away some SATA or SATA Express lanes.

MaXxBoulton · 26 Mar 2019 at 20:38

LuckyBenski said:
for instance using M.2 slots for PCIe can take away some SATA or SATA Express lanes.

thanks for the heads up. i think he only as one drive but i will check first

WantoN · 27 Mar 2019 at 15:37

My overclocked 1080 is running in x8; I can’t perceive any difference with my NVME drive in the second full size slot (1tb WD Black on a PCIE converter card). I’ll try it in the third at some point and update the thread if it makes a difference.

The m.2 on your Mobo will likely disable two Sata ports (5+6 in most cases), mine has for my OS drive.

What GPU is it? Unless it’s an absolute monster of a card, I doubt you’d see any difference at x8 anyway.

What’s the motherboard?

MaXxBoulton · 27 Mar 2019 at 17:37

WantoN said:
What GPU is it? Unless

he picked up a 1070 about 2 week ago, also just found out the motherboard is a Gigabyte Z270n gaming

WantoN · 27 Mar 2019 at 17:49

MaXxBoulton said:
he picked up a 1070 about 2 week ago, also just found out the motherboard is a Gigabyte Z270n gaming

A cursory look at the board suggests that it has onboard m.2 and using this should mean the single slot runs at x16 for his 1070. I doubt he would notice x8 on that card anyway.

MaXxBoulton · 27 Mar 2019 at 21:18

WantoN said:
A cursory look at the board suggests that it has onboard m.2 and using this should mean the single slot runs at x16 for his 1070. I doubt he would notice x8 on that card anyway.

super, thanks