Man... I've been having so many problems with this new comp that I just built.
Finally got them sorted out.
i7 860 @ 3.8 GHz, 5850 Xfire OC to 850/1150, Vertex SSD. Seems like a champ.
But I had to contend with quite a few issues.
For starters the hardware build wasn't quite as smoothed as I had hoped. Picked up a megahelm cooler. Massive bastard. 2 120mm fans for a push/pull... unfortunately the tall heat spreaders on the ram prevented me from installing the second 120mm fan.
Once I got that setup, it became immediately apparent that one of the big reasons that I built the new pc had recieved a good kick to the ground; with the fact that when in Crossfire, you're only able to use the video outputs for one card.
So to use my three monitors, I have to disable crossfire.
One of the monitors (I believe its a cable issue) has problems displaying as well... it gives me a corrupted output, until I change its refresh to 59Hz... changing it back to 60Hz after is fine, with no noticeable difference.
But I have to do this every time I disable Crossfire.
With crossfire, I have it set to a single monitor... at least I don't have to alter the display settings every time I change that.
But it does resize all my windows into a 1024x768 area, so I have to reposition all the icons and window sizes.
Also had quite a bit of trouble overclocking my CPU... eventually got it right though, and got it steady enough to run a couple hours of prime95. Good enough for stability.
One of the more annoying and stranger bugs I've been getting is an oversized mouse cursor... like it'll blow upto 4x it's size, pixelated and all... at random. Once it blows up, it stays blown up until I reboot. Or until I turn on cursor trails... which in itself causes a few issues (such as no cursor in Dragon Age (probably other games as well). It wouldn't be so bad, except it flickers like mad at random. Sometimes it's stable, but other times it'll flicker noticably and annoyingly and very quickly between the standard cursor size and the oversized version.
It seems to have gone away now.
Biggest bitch I've had so far was with getting Dirt 2 to run... I've got two copies (which I'll trade the second for with a game on steam if anyone is interested (Pm me with offer)) because they came with the 5850s.
Absolutely awesome game, especially with the Logitech G25 wheel... when you can get it to run.
First time I installed it, it was running ok. Went in to change a few settings; resolution, etc... and it bugs out. Play around with it a bit more to get things right... and suddenly it just stops working. It'll boot, but without displaying anything on screen.
Played around with all the settings in the catalyst driver; disabled Crossfire... that changed things up, but still didn't help; it'll load up the first AMD ad video... and then stutter and blackout after that. Even deleted it and redownloaded all 10 gigs again. Didn't change a thing.
Figured I'd google for a fix, found a ATI fix/patch/different version of catalyst for Dirt 2. Only it didn't seem to be working for the people that tried it.
Gave it a shot anyway... still wasn't working. Tried going through all the settings again and eventually found the culprit to be the Catalyst A.I...
Got it working again after about 3-4 hours.
Fucking ATI drivers man... really frustrating stuff. I much prefer the ability to set stuff up per application if I want to with Nvidia. I can kinda do it with Catalyst, but it's not integrated nearly as well (I can setup a particular profile, and get that profile to launch a shortcut when activated... as opposed to having catalyst autodetect when the application is running).
Plus the whole general lack of polish and shine for multi-gpu users makes the whole high-end PC gaming very much the domain of enthusaists only... paying this much money to deal with so many buggy problems... you really have to love it to do it.
Fortunately, once you get everything set up right, overclocked, stable, with workarounds for critical issues... it's satisfying.
Next step will be to hit that 4GHz mark... which is proving elusive so far (as far as stability goes). I think I might need to rewire the case... there's a big IDE cable obfuscating the airflow to the CPU/GPUs... going to need to replace the DVD drive with a newer one (I scavenged this one from an older comp)... although that's going to eat up a SATA port... and I had planned to install 8 HDDs in the machine. Oh well.