Link to home
Start Free TrialLog in
Avatar of xema
xemaFlag for Mexico

asked on

PCIe x1 Video into PCIe 4x slot

It may sound a silly question but
May I use an PCIe 4x slot with a PCIe 1x card?
I want to use a Nvidia NVS 300 PCIe 1x video card on a Dell PowerEdge 2900 server. with 3 PCIe 4x slots
Also I would like to use a Dynex™ 2-Port eSATA II PCIe x1 add on card
Avatar of fleamourian
fleamourian

I know it should work fine vice versa (PCIe 4x in a PCIe 1x slot.)  So see no problems t'other way round.
Avatar of xema

ASKER

fleamourian
A PCIe 4x is longer that a PCIe 1x so an 4x add on card won't fit on a PCI 1x slot. Also the number stablishes the data lanes in use, a 4x gadget uses 4 data lanes a PCIe 1 x only has 1 lane so I don't belive it'll work even if you modify the slot to accept a longer card.
ASKER CERTIFIED SOLUTION
Avatar of klodefactor
klodefactor

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Avatar of nobus
yes you can - see :  http://en.wikipedia.org/wiki/PCI_Express
A PCIe card physically fits (and works correctly) in any slot that is at least as large as it is (e.g., an ×1 sized card will work in any sized slot);
Hi,

Whilst electronically it will fit, there may be some other impediments to it working.

Please see the below post:

http://serverfault.com/questions/97056/video-card-for-a-dell-2900

They could run a NVS 290 in a PowerEdge 2950 so it's possible the 300 may not work but they were sccessful with NVS 440 and NVS 280 - a BIOS update may be needed to support the 300?

Regards,


RobMobility.
If it physically fits you can generally use a x4 card in an x1 slot becaues it'll negotiate to use less lanes, good example are QLogic 8Gb fibre channel cards that have 8 lanes but only use 4 if they're in a PCIe 2 slot and the HP risers that are physically x8 but only x4 electrically. (not that that'll help with your video card question)
Avatar of xema

ASKER

To all, late last night I though I had accepted klodefactor answer.  As i checked this morning I did something wrong and it wasn't registered.
I apreciate you responses but to be honest I though I had closed the thread last night