Shuttles are great computers if you want something very small they can not be beat. I use both micro atx systems and sff (shuttles). I have a few now, my rock solid old P4 (nw 3.0c running 3.6ghz) lasted 4 years while running 24/7 and logging close to 12 hours a day of usage. The major disadvantage is lack of non oem parts, i.e. a mobo replacement is expensive. The advantage is the initial cost is low. The psu's are much stronger then their rating compared to similar rated standard psu's. Since you get a cool, cpu cooler with the deal they are very reasonably priced and easy to build! Put some foam on the inside vents and you got a filtered system you can have up and running in a few hours. This new crossfire unit should rock with the new 700 series ati cards. Bios upgrades can be a pain, or lacking, so make sure the initial bios works for your set up. I love shuttles! If you fill your system will lots of drives and dual video cards you can tweak the cooling by adding second fan in the back of the shuttle dual, fan out.
One thing about this and the 35 model... DO NOT PLAN on RAID if you BUY a SATA DVD/CD UNIT. For what ever reason.. You can't get the RAID setup screen with all three items on SATA. You'll need to buy IDE DVD/CD Unit then you can utilized the built in RAID CONTROLLER. Live and learn.. I did on both the 35 and 38 unit.
Great tip about the raid controller, another tip is if you pick ACHI for the SATA controller for the newest features of SATA 2 then a SATA optical drive is not seen in windows. there is no alternative SATA controller so you have to use IDE to have an optical drive.
Note: your comment about max crossfix config is incorrect, there are a few single slot HD3870 cards, I am currently running the Sapphire HD 3870 Toxic, an excellent single slot solution which runs very cool and quiet.
They should add another video card option. The Sapphire Toxic/Atomic edition 3870 could easily fit in there. Mines runs pretty cool even under load, which is great for single slot. Would also give them a higher end dual card solution for those systems.
mbaroud, I checked and the 9800GX2 only pulls about 10-15 more than the 8800GTX used in the testing PC. The 9650 should be a very big draw when overclocked and so I would think you could be OK with your config.
Mathos, I wish they did offer more selection but you can get any video card you want if you build up a barebones unit.
Hey, just built one of these using 9800gtx, q9300, 8gb ram and the 10k raptor. It works great! Had to remove small piece of plastic from the gtx to get it to fit around the motherboard power connector. Also, had to download the 64bit drivers from shuttle because either they weren't on the disk or the install routine didn't detect it was a 64bit os.