I racing is not a very computer intensive game. Whatever you're running with that 440 watt PS is probably enough to play it, maybe not maxed out, but iRacing isnt a very pretty game to begin with. As long as you can do your native resolution and maximum viewing distance with everything else turned all the way down you can play it. In the order of spending your money with iRacing assuming you've got a computer made within the last decade wheel/pedals/shifter->racing seat->motion simulator->top end computer
I can play without the motion simulator, right? That's like another $700.
Hustler, I used my 4 year old pc with a new video card. The video card had 1 DVI and 1 Display port.
Display port is a serial connector so you can daisy chain off the one. I used the 1 x DVI and daisy chained the display port to two other DVI inputs on the 27" screens using display port to DVI adaptors.
I predominantly play Rfactor but had a 6 month period on iracing as well. Video card performance was the key. My pc has 2 GB ram and a quad core cpu from approx 3 years ago....
Games run no problem on the 3 x 27" lcds with graphics on full.
I cant recall the video card as I am at work but can if you need it. It wasn't mega high end. ( I own a little IT company so I could go high end if I needed but it just hasn't been required...)
Display port should be able to run 3 monitors on a single video card however at a little lower resolution. From memory 1500 x 900 ish pixels per monitor. With dual video cards (ensure you buy the same video cards) you shouldnt need anything fancy like that and just be able to connect the 3 monitors and run them at full resolutions.
I can't open your links however ensure your motherboard can run the video cards at full speed. Most mobos run 1 at 16x and 2 at 8x.
You will need a new case as well. I again went with Thermaltake - this case has 4x usb on the front (requirement for me) and is completely toolless. And no sharp edges to extract sacrificial blood for the computer gods.
Really enjoying this so far-- I think anyone who does not own an iracing setup should think about making the investment. Too bad my main 2 tracks aren't on here yet.
I cant help with a computer build because I am not familiar with 3 monitor setup requirements. I can tell you that I built a gaming rig a couple months ago after about 2 months of research and ended up with this. $450 w/o video card. I went with the radeon 7850, but the gtx 660 is a good choice as well (i chose based on price). Obviously those cards alone will only run 2 monitors unless you sli/crossfire them.
ATI is definitely the way to go for video cards, I have one card driving three monitors and it runs with a decent frame rate. With only one video card you can buy pretty much any motherboard, unlike SLI setups needing two fast PCI-E slots.
I'm using a G25 wheel but I have shimmed the brake pedal so it feels more realistic. In standard form it is very light. I have some Fanatec Clubsport pedals but they are missing a spring so can't try them yet.
For a wheel get the Logitec G25 and mount a regular wheel on it. Yes it also has forced feedback that will pull it around just like a normal car.
Its simple enough to allow tons of modifications such as a standard wheel and shift ****. The pedals are also simple enough so u can take them out and mount them on a top mount so they are from the top like a normal car. The G27 is also pretty cool however too arcade and modifying it is harder since theres more buttons on the steering wheel.
Don't get me wrong, it's awesome and i'll probably buy one when the consumer version comes out. But the Dev version has to low of a resolution, and a few other issues they need to fix. I used it for maybe an hour, and i was was loving it though.
Wait for the consumer version. They'll be fixing a bunch of things, and make it much better.