meglamaniac, you seem to be looking at a system almost identical to mine! So I thought I'd give you some thoughts...
Firstly, how did you get an A3 Super Tornado in the UK?!?! Did you import one?
I think the new PCI-E nForce4 boards may need ATX 2.0 PSU's, worth checking the SuperTornado will do the job before buying a system! I'd expect it will work fine, but better safe than sorry. I got the NoiseTaker 475 2.0 myself and am very happy with it, expecially compared to previous Enermax's. With such a high efficiency as long as it isn't sucking in hot air the fans never spin up above minimum, and I've decided to make a PSU duct to keep it that way!
I'd personally recommend getting 120mm case fans instead. you get more air moved for the same noise as long as you pick good fans and undervolt them. I've got 3 Nexus 120-mm fans that really are as good as their rep here on SR.
If you're getting an A8N series mobo then the XP-120 is compatible. Actually, I've only "heard" it is - my A8N-SLI hasn't arrived yet for me to check! It has better be though! I'll post an update once it arrives - hopefully this weekend
Can't argue with the choice of CPU fan or NB cooler - I've got the ones mentioned.
The A8N-SLI is (as I write this) listed as in stock at "Vadim Computers" but I can't make any recomendations about them yet because i've never ordered from them before. If you're interested see
http://www.vadim.co.uk/Components/Motherboards/AMD+64
Winchester's look good, but I've seen reports of problems with a few of them not running Prime95 even at stock. Possibly related to the reports in the last couple of days that dud AMD chips have been nicked and sold as good - so if you get one - test it thoroughly and if it bails out - send it right back.
Can't really help with the memory - I've not ordered any - just going to use my Corsair XMS3500 for now - with BH5 chips, 2225 timings. I've heard good stuff about the Crucial getting up to high clock speeds tho, and its not too expensive so it looks like a good bet, just check that it is the version with Samsung TCCD chips on it if you want to clock it up
I've had an NEC 3520A for a few weeks now and am very happy with it. So happy in-fact that it has made my loyal Plextor CD-RW obsolete, which my old DRU-500A failed miserably to do. I wouldn't worry about RPC issues because as long as you get a DVD-ROM with a patch it wont matter, but I suppose it is another plus factor for the NEC. At the current price of the 3520A why not just get 2 instead of 1 and a -ROM drive?
I would personally go with the SpinPoints not the 7200.7's. I currently have a 7200.7 S-ATA 120Gb and am not that impressed. It is noticeably louder than my old DeathStar, altho to be fair I had used the IBM feature tool on the old deathstar to quiet it down.
The mitsui card reader / floppy drives are excellent. I've got 1 myself, and was impressed enough to get 2 others for friends who's PCs I have recently upgraded. No complaints so far. They look very sweet too.
I can't really help you with the video card because I didn't know what to get myself. In the end I got a MSI 6600GT because it was the cheapest GT around and its supposed to be one of the quieter ones (according to Anandtech anyway). I guess it will easily be the noisiest thing in my system, and I'll have to do something to fix it. I'll post again when the system is up and running and give some feedback on it.
Finally - and most importantly - the case. Don't make a mistake! I wanted a Lian-Li for a very long time, but when I finally prepared to get myself one I noticed the CoolerMaster Stacker. After a long and difficuly decision I got the Stacker because it was a lot cheaper than the PC-V2000 which was the alternative for me. I do not regret it! Its an awesome case. First and foremost it looks awesome. It has several other advantages too - especially the mounting spaces for 120mm case fans, and the steel chassis is better from a noise point of view. It still has an Aluminium bezel so it looks like an Alu case. The 80mm fan hole in the top of the case is also very handy for a PSU duct. One final thought on it - I found the space in the motherboard tray that is meant for the cross-flow fan to be very convenient for routing wires to the motherboard.
I'm hoping the motherboard for my system will arrive this weekend. If it does I will post some more info and photos as soon as I can get it all up and running. For now see the photos of the half-empty case (and the "temporary" Pentium-II 350 system!) at
http://jon.gotdns.com/photos/Technical/ ... lent%20PC/
Good luck!
Jon