@bpvarsity Probably because you can't run 16 lanes down a USB cable. The throughput isn't a big deal for for our usage.
Even ignoring the power and ground pins there seems to be more lines needed than in a usb cable (nine?). Maybe some of the connections are optional. Do you know the explanation? Just curious.
Fairly sure a x1 lane is just a serial pair but PCIe pinouts already in my TODO bucket....somewhere near the bottom...
Each pcie lane has 2 lines transmitting and 2 lines receiving. Another 2 lines for the reference clock. With only 9 available in the usb cable that leaves only 3. I am thinking the SMBus and JTAG port pins are mostly not required.
I've got a few of those.. Tried it, didnt work. Windows was unable to install the graphics driver for the connected card. It recognizes the hub but not the cards.
If someone does manage to get it to work, let me know.
I've got a few of those.. Tried it, didnt work. Windows was unable to install the graphics driver for the connected card. It recognizes the hub but not the cards.
If someone does manage to get it to work, let me know.
I was wondering to make an nvidia rig with 18gpus but the problem of the method is not mainly if it works or not but how much cards can manage the driver. I heard of a limit of 8 with amd, but I don't know what nvidia hard codes to its drivers. This limit could be bypassed by using virtualization but in that case the problem become does my computer allow three virual machines with 4-8gb of ram, a shitty celeron and a scummy h81 pro btc?
That would be a dream if I could fit 8-10 graphics cards on one single mainboard and have them all hashing away. Would help save a lot of space. I have a lot of ADD2PSU adapters so power wouldn't be a problem for me.
Multiplexing is the way. The extended slots take turns communicating by using the connection to the mobo. As far as the mobo is concerned, it is a single GPU in its slot.
I tried one I got it to see all 3 cards off of it but when i tried to mine it bombed. I later found out it was the wire size on my molex 3 way that was too small so it was pulling too much juice.
I went back and tried it with more power but was having problems with the mother board only see one card with it after that so i left it alone after a couple of hours and just got all my cards running off that MB.
It did see all three cards though. It will not work on the longer lanes only the small 1x lanes.
I tried one I got it to see all 3 cards off of it but when i tried to mine it bombed. I later found out it was the wire size on my molex 3 way that was too small so it was pulling too much juice.
I went back and tried it with more power but was having problems with the mother board only see one card with it after that so i left it alone after a couple of hours and just got all my cards running off that MB.
It did see all three cards though. It will not work on the longer lanes only the small 1x lanes.
I have a 4 slot version since september... But it does not work with any of my maxwell gpus. Tried 750ti, 960, 970 and 980. The board itself gets detected in windows and no problems shown in device manager. But the gpus are not detected on it. I have tried also shorting PCI-E presence pins with no luck. No luck for me on win7x64 and lubuntu. Tried on two different MB, pcie x16 or x1 slots... The MBs are Asus h97-plus and asrock H81 pro BTC.
I have also contacted sintech(the manufacturer) but they didn't put any effort for solving it out. I got refunded instantly
@dominus, I read on the ones I purchase that they are not suitable for GTX 750Ti's so I'm not surprised that other Nvidia's don't work. Why they don't work and why they only specified 750 Ti's, I have no clue
@dominus@o0ragman0o I talked to the chinese factory of the boards and they confirmed me that they won't work with any maxwell cards (the whole 9xx series and 750/750ti) but he said me that they will work with kepler and AMD cards. He said me they already did this test. Reading others' posts this kind of hubs work with amd, so I hope they'll work with my future gtx 760 gk104 kepler.
Comments
Pcie pin-out :-
https://en.wikipedia.org/wiki/PCI_Express
http://www.ebay.com/itm/PCI-e-Express-1X-to-3-Port-1X-Switch-Multiplier-HUB-Riser-Card-USB-Cable-1PC-/141865200790?hash=item2107d32c96:g:zTwAAOSwa-dWhMvm
thanks for keeping us updated
If someone does manage to get it to work, let me know.
http://www.ebay.com/itm/PCI-e-Express-1X-3-Port-1X-Switch-Multiplier-HUB-Riser-Card-USB-Cable-1PC-/141865200790
But I still not received it yet
I went back and tried it with more power but was having problems with the mother board only see one card with it after that so i left it alone after a couple of hours and just got all my cards running off that MB.
It did see all three cards though. It will not work on the longer lanes only the small 1x lanes.
No luck for me on win7x64 and lubuntu.
Tried on two different MB, pcie x16 or x1 slots... The MBs are Asus h97-plus and asrock H81 pro BTC.
I have also contacted sintech(the manufacturer) but they didn't put any effort for solving it out. I got refunded instantly
Unluckily I don't have any AMD card...
I talked to the chinese factory of the boards and they confirmed me that they won't work with any maxwell cards (the whole 9xx series and 750/750ti) but he said me that they will work with kepler and AMD cards. He said me they already did this test. Reading others' posts this kind of hubs work with amd, so I hope they'll work with my future gtx 760 gk104 kepler.