I have a move to Hawaii coming up and mining just isn't cost-efficient there. I have 5 systems here, with 5 GPUs each I would like to sell.
2 systems with 5x XFX 5850 - Does ~1.5 Gh/s - Would like to get $2500 USD each
3 systems with 5x Sapphire 5830s - Does about 1.4 Gh/s - Would like to get $2000 USD each
and I have one system with a mish-mash of GPUs that I'm going to hold on to a bit longer.
Each system has a gigabyte motherboard with 5 PCI slots, a custom aluminum case that holds all five cards, and extenders. Each is powered by Corsair AX1200 PSUs. These are gold rated 90+ efficiency. Black power button, red reset button, and a blue power LED on the front panel. These systems all run off of a 2 gigabyte thumbdrive. Some have 4 gig sticks in them, which will be included as well. CPUs are all 2.7Ghz AMD Semprons, 1 gigabyte of ram.
Cases are 17.75 inches wide by 8.5 inches high. They fit in 5U's of space very nicely. The 5850s are overclocked to various degrees, achieving between 300 and 400 Mh/s each. The 5830s are all stock. None of the cards have seen above 80c peak temps, and only then during testing. They never hit above 75c while running and usually run at or below 70c. Each case has three 120mm fans on the front and some cases have cutouts on the back for two 120mm exhaust fans, although they have been removed due to not being needed. Air is currently forced in via the front fans and is naturally pushed out through the rear openings, where it was exhausted and either wound up going to the inlet of the AC unit or exhausted outside.
They are currently running a custom management script, but I will put something else on them when they are sold, one of the more widely used systems that has popped up on the forum in the last few weeks. Still undecided on which one I will use though. These systems all run Archlinux headless and start mining automatically upon boot.
Prices are negotiable. Located near Springfield, MO, USA. I will also offer 30 days of support once you receive the unit(s) although you probably wont need it. Not interested in parting out the systems.
You can view my OTC rating here: http://bitcoin-otc.com/viewratingdetail.php?nick=inh
Pics below. Not all systems have buttons and LEDs installed yet. The custom cables are made, just waiting for more buttons to get in:
During construction and testing:
I still have the original packaging for everything. Half of the systems have been running since early June, the other half have been running since late July:
parting out: https://bitcointalk.org/index.php?topic=37133.0