I aready have Lunatics on my A-SYS (i7/930, DX58SO, EVGA GTX275/GTS250 intergrated card, 6Gb ram, Win7 Ultimate, 64-bit) and am quite pleased with it. I am thinking of putting it on my B-SYS (Q6600, DP35DP, 4Gb ram, EVGA GTS 250, Win7 Pro, 64-bit). Is there anyone out in the crunching universe who is running Lunatics under the same conditions?

I run SETI on primarily on both systems and will pull in Milkyway and Climate Prediction when necessary.

I aready have Lunatics on my A-SYS (i7/930, DX58SO, EVGA GTX275/GTS250 intergrated card, 6Gb ram, Win7 Ultimate, 64-bit) and am quite pleased with it. I am thinking of putting it on my B-SYS (Q6600, DP35DP, 4Gb ram, EVGA GTS 250, Win7 Pro, 64-bit). Is there anyone out in the crunching universe who is running Lunatics under the same conditions?

I run SETI on primarily on both systems and will pull in Milkyway and Climate Prediction when necessary.

Before I went to quad GT 240s on both of my two systems I was running 1 and 2 GTS 250s, respectively, and Lunatics, and I had no problems with them.

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I had a similar system, except with a AMD Phenom II 940. my 250 did around 74-80 WUs per day. this was around August/September before the whole long outage period.

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I couldn't live without Lunatics on my machines that each have a GTS 250. Believe it or not, it's actually more stable. I don't know why this is, because it seems counter intuitive if the machine is being pushed harder. I believe the problems I was having were due to the PSU, so you'd think I'd still be using too much power with the optimized apps. But it was like night and day when I switched in terms of stability. I didn't notice a huge difference in speed on the GPU apps, but of course the CPU apps are way faster than stock. That said, the rest of my setup is not that similar to yours. I'm using 3-5 year old AMD CPUs and 32-bit Win XP...

Note that my RAC is not representative of how the GTS 250s normally run. I just haven't been crunching recently because I had to do some fan maintenance.

This host
runs LUNATICs v0.37.
A (Q6600 early version) + GTS250, OS is VISTA 32Bit Home .
It's a HP Pavillion Desktop, had a 8500 card, before I switched it with a GTS250,
no problems.
Only heat, so I removed one side and have an auxilairy fan cooling it.

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One of my hosts is running a dual core with an 8800 and a GTS 250 and lunatics .37, on Windows Server 2008 R2 (same core as Windows 7). Not sure if it helps you any.

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Traveling through space at ~67,000mph!