Here's a pic of my current set-up;
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I'm using a pair of Behringer Truth B2031A's as my main reference monitors. They're active bi-amp monitors (250W each) with 8" bass drivers. Listened to loads of others, (including some at 4 times the price), but still prefer the overall tone and depth of sound of the Behringers. I also have a Cambridge Audio A5 amp connected to the Tascam US-1641 monitor outs which drive a set of Mission 737's and vintage Tannoy Mercury speakers for an alternative audio reference. My monitor is a Samsung 34" ultrawide (21:9 ratio) curved display running at 3440 x 1440 resolution. There's also the obvious Korg Trident Extreme sitting in front mainly used for MIDI input but the audio outs are plugged into the Tascam for recording. Partly obscured in the background is my SpacePilot 3D mouse which I use all the time with SolidWorks, (and it's also great fun to use in Google Earth!). The speaker stands and computer keyboard stand were made by myself so I could make the computer keyboard float above the Korg.
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3DConnexion SpacePilot
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Cubase mix
The 2.5"/3.5" drive enclosure I mentioned is actually installed in the bay below my DVD drive, (2.5" and 3.5" drives are present);
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I've never used the remote desktop app in windows but I have in the past used the remote assistance app many times to fix my friends computers who live 150 miles away. Very handy and saves a ton of time. (You know exactly what I mean after you spend 3 nights on the phone trying to explain to a friend or relative how to resolve a simple computer problem). I have also used vnc quite a bit in the past when I built a headless file server and connected it to my home network, (along with all the kids computers) . You can have multiple sessions running at once giving you a real time view (and control) of all the desktops simultaneously. I don't think vnc talks up much resource to run either.
Talking about PassMark, tonight's score is . . . .
Drum roll . . . .
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Ran it again straight away and got 4723?
Passmark System Rating= 4718 / CPU= 19561 / 2D= 524 / 3D = 0? / Mem =2210 / Disk = 8218
Bit of a jump in memory speed and the M.2 is creeping up? I don't know why but the 3D tests run absolutely fine one day then not the next. Sometimes the DirectX 9 complex test goes to a black window which I need to close otherwise the testing just hangs at that point. The DirectX 10 and 11 tests run fine? Might try a different graphics driver, (currently using 361.91).
Managed to download a 14 day trial version of bunkspeed, (bought over by Dasault Systems and changed to SolidWorks Visualize), which I plan to test the K4200 and Tesla cards this week. It has the option to select between CPU and GPU rendering so should be interesting to see if the Tesla is doing much.
Checked my BIOS version and it's 3.88;
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I'm sure I upgraded the BIOS myself about 5 months ago, (just after I bought the Z620 and prior to fitting the CPU riser and 2670's), and if I remember correctly, it was a breeze to do. I downloaded the Windows version and ran the app. After a reboot, all done! Simple.
After much deep thought and deliberation, (about 10 minutes actually), I have decided to take the plunge and give the UEFI Windows install a go. Took me a whole day, but I eventually managed to locate and purchase a boxed full retail version, (unused with the cling film still on the box), of Windows 7 Professional. Definitely not an OEM version and has both 32bit and 64bit DVD's. I've printed off the guide from the link you posted and reading the fine detail now. I'll remove all my additional hardware first bar the CPU's, memory and K4200 and check the prerequesites first. I also have a USB DVD reader/writer handy just in case. Hopefully, the Windows 7 will arrive before the weekend.
I'll let you know how I get on with the 3D render testing.