nVidia GPUs and double precision

I am an ATI GPU cruncher mainly, but for certain projects it might be useful to use the occasional nVidia GPU.

For all project application, including Milkyway, what is the oldest series nVidia GeForce GPU card that provides double precision?

For example it it might be the GTX2xx series or higher.

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Go away, I was asleep

I crunched MW on GTX260 and GTX460.

I crunched MW on GTX260 and GTX460.

May I ask what sort of outputs they individually give, and what their power draw is estimated to be, Werkstatt?

I was mainly thinking of adding a additional NV GPU to one or both of my quads (then reach the limit of PCIe), but aim these GPUs at PrimeGrid. But with the flexibility to be used here or any of the GPU projects (even SETI MB and Einstein).

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Go away, I was asleep

May I ask what sort of outputs they individually give, and what their power draw is estimated to be, Werkstatt?

I was mainly thinking of adding a additional NV GPU to one or both of my quads (then reach the limit of PCIe), but aim these GPUs at PrimeGrid. But with the flexibility to be used here or any of the GPU projects (even SETI MB and Einstein).

I can not remember the time the GTX260 took; I gave that card a friend.
The GTX460 needs ~11 minutes for one OpenCL-Task; power-consumption is slightly higher than that of my HD6950 in the same machine.
Edit: GTX260 was long before the OpenCL, it was CUDA-time!

Take a look at the CUDA wiki page, and a couple of screens down you will see a table with the compute capability of the more popular card families. Anything with a compute capability of 1.3 or higher will do doubles.

If price is a major consideration, another possibility would be to go with what I call a "baby Fermi" like the GTX-430. They run about half the price of the GTX460 and have a speed of 179 GFlops vs. 673 for the 460.

As you can see thouth, you get a lot more bang for the buck with the 460. Since the GPU's are close generationally, you don't have problems running them together in the same machine as I'm doing in one of mine.

The 460 runs at about 51-56oC while the 430 runs at about 40oC.

Regards,
Steve

Or get a 440, its basically a 430 (a little bit higher clocks) with ddr5. It will perform better in Collatz than the 430 when MW have troubles. The OEM one have 112 shaders while the retail one is only a pumped up 430 (96 shaders).