GTX 465 showing disabled.

[l_gel]

My classroom was donated this card and we would like to fold on it if possible. The client shows it disabled GF100 and we are not sure how to enable it.

Thank you for your time.

[Joe_H]

Welcome to the folding support forum.

The GTX 465 is too old to be used for folding now. While it supports double precision calculations, it does not support OpenCL 1.2 which is required for the current GPU folding core.

Official support for double precision in OpenCL started with version 1.2. Nvidia chose with the Fermi based GPUs such as the GTX 465 to implement some of the necessary instructions, but otherwise the cards only support OpenCL 1.1. So there are unimplemented instructions that sometimes cause folding to fail.

[l_gel]

Ok thank you Joe. I suspected that was the case when I saw that it does OpenCL 1.1. I have mostly used Radeons, but my co-worker said he used to fold with Fermi cards using CUDA (I'm guessing that was years ago). We will try and find some newer cards for our students to play around with.

[Neil-B]

I don't suppose you are UK based? ... If so pm me an address and I'll send you a GTX750Ti for the students to use (free of charge, no postage costs) - not the fastest gpu by any means but usable and still getting nvidia driver updates (at least for the time being).

[l_gel]

Thanks Neil, but no I'm in the USA. We do have a GT 730 but it seems to only complete maybe 2-3 work units per week. I'm going to check used outlets like ebay and craigslist for something better.

[Joe_H]

The GT 730 is at about the minimum that can successfully complete WUs currently. But there are several versions of the card out there. Some are based on Fermi chips like the GTX 465, others use the later Kepler series GPU chips. The Kepler based ones should get assignments, but not all GPU projects are small enough to be directed towards a 730.

[l_gel]

Update:

We found a GTX 750 for pretty cheap. The best part is the low power requirement despite being a faster card than the GTX 465.

[Joe_H]

That's a good card and should stay supported for a while. Unlike most of the rest of the GT 700 series cards it is based on a first generation Maxwell chip. That will have support a bit longer than the Kepler and Fermi based cards that nVidia has announced end of full support will be in October.