Need advice on a suitable Nvidia card to use for BOINC in a PCIE 2 16x slot that has only 8 lanes

DeadMoney

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Well the last graphics card I bought was an ATI All-In-Wonder AGP card, so I have a little catching up to do. Needless to say, I'm not into gaming.

I have a ProLiant ML350 G6 server, running Ubuntu 14.04.3, that's dedicated to BOINC projects, and I would like to find an appropriate graphics card to upgrade my crunching performance a bit. I'm primarily interested in Nvidia because I want to crunch GPUGRD projects but of course I will consider other solutions if they make more sense technically and economically. However, there seem to be a couple of potential problems on the way.

The first problem is that, from what I vaguely remember of I've read, I believe that the one PCI express-2 16x slot on my system board only has 8 actual lanes, so it's electrically-speaking only an 8x slot and I'm wondering how advanced of a card can I use in that slot without losing too much performance.

Another problem is the power cable required by HP, which is a 10-pin to 6-pin that fits onto the PSU backplane. These seem either a) mostly unavailable or b) expensive, at least for the OEM part. I did find some other possible fits such as this but am not sure it would actually be compatible. Does anyone know about that or if/where I could buy the connectors to make one myself or what the pinouts would be?

Any helpful suggestions appreciated!
 
Solution
You can run a card using a standard molex power connection with an adapter, I think I opened up a dozen new cards and everyone I remember came with such an adapter. The 8 lane limit won't affect you at all unless you go for a very high end card. Basically with being able to use an adapter you are only limited by your power supply although I would not put in a very high end card in like a 980, 970 should be OK though, if it fits in the case.
You can run a card using a standard molex power connection with an adapter, I think I opened up a dozen new cards and everyone I remember came with such an adapter. The 8 lane limit won't affect you at all unless you go for a very high end card. Basically with being able to use an adapter you are only limited by your power supply although I would not put in a very high end card in like a 980, 970 should be OK though, if it fits in the case.
 
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DeadMoney

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Hey thanks for the good news! I was hoping this would work out.