Need some opinions

Depends on budget. If that is an issue, I recommend getting 3200+ Venice's or 3500+ Venice's. If budget is not a big issue, get 3800+ X2 Manchester (2 3200+ Venices).

~~Mad Mod Mike, pimpin' the world 1 rig at a time

Budget is going to be < 2000 dollars.

But would the X2 really be worth the extra cost for pure gaming rigs?

Is that $2000 per RIG or $2000 total? (I hope it aint the latter lol).

~~Mad Mod Mike, pimpin' the world 1 rig at a time

No, not right now, but in the near future more games are supposedly going to utilize the 2nd core. fwiw

Most LAN gamer barracks / LANcafé down here will get the cheapest, but most viable performance per dollar solution for the month, keep some of the parts 6 - 18 months, and then sell of various parts '2nd hand' but in bulk to the community to recoup costs.

That way you can always have around 85% of bleeding edge (percentage depends how you define bleeding edge - chk my sig for an idea  ), while being cost effective over the lifetime of the business - hopefully many years  

The '2nd hand sales' from LANcafé can generate a fair bit of advertising themselves aswell, esp if the gear is 'recentish' and well priced (possibly with some sort of 'psuedo-warranty') and many gamers who play at such places can not afford a computer 'better than' what is in the shop.... so need the 2nd hand parts. I mean if they could afford an ace PC, with decent broadband (not shared by a family of 3-6 which hurts pings) they wouldn't be playing there very often would they ?

Of course having large discount nights, and 'girls free' nights will attract them anyway  , and being in 1 - 4 rooms / segments (for 'clan' matches, or groups of friends vs other groups), all with typical GbE backbones and always < 1 ms pings will still get people with the best broadband to check you out at least once.

You are just giving the typical customers two things that they want (parts and a place to game, & possibly bring their own 'rigs') instead of one (just plain old LAN gaming), recouping costs in a cycle (6 - 18 months) on hardware, and boosting advertising for free all in one hit.

Business is about being the smartest SoB there is   compared to your competitors (if any) within a given regional customer base. If no competitors try open many stores within a 3 year time frame to gain a 'mini monopoly' if the area is large enough and to keep advertising and market share (of customers, both gamers and 2nd hand hardware buyers) on your side.

Your main enemy will be the broadband uptake, if any, in your town / area.

eg: Get what is cost effective, provides good performance today, then sell say the CPUs to upgrade them, in 6-12 months... or whenever it makes financially viable sense to do so.

I honestly think Athlon 64 3200 - 3700+ (likely towards the bottom end) with GeForce 7800 GT on an nForce 4 platform will get the gamers. Onboard sound is OK (eg: Realtek 850's ain't bad and have EAX, their 200 series is though), esp if using headsets (w/o mics if people are within 'yelling' range within 'squad segments' of the shop).

I was going to try this when I got out of college, but work for the Gov in IT now instead   .... the income is more steady and about 10 other people did the same thing so competition is extreme, many LANcafé / Gamers Barracks all within 50 km radius here.

Most your customers will be 14 - 25 yo males, the older the more likely they can almost always build a better PC than the shop, (that is more viable cost wise to them than playing at your shop), and afford decent broadband to negate the need to play on small LANs.

Some of the places here are interconnected (between shops) by 4 Mbps+ full duplex links, to encourage a 'community battle' sort of thing between shops.... also means they can host servers and players at the shop can play online usually with very good pings and datarates.

Try to get an imaging system going, and image each box every morning. Gamers will dislike things like 'weird key mappings' and some will try to install 'hax' onto the machines (so remove floppy and optical drives, etc), do not permit file download from internet on the 'gamer' PCs. - Have seperate 'browser' PCs for this purpose.

Lock down BIOS with admin and user passwords, get boards with no FSB overclocking features, and make sure cases are hard to break and secure / lockable. (Antec Performance TX series comes to mind - http://www.antec.com/us/pro_en_perfTX.html - the Antec TX640B in particular)

A few fake security cameras in the rooms / segments corners and a locked back room can also go along way to a 'stable' gaming environment, if you get my drift.  

I was seriously going to do this with a mate about 6-8 years ago, but many other people did the same thing... we still both work in IT though... feel free to contact me (details in website, link in sig, see contact details page) if you want, this has always been a 'dream' of mine so to speak... although these 'new skool' gamers annoy me sometimes.... and the lack of sleep would too...  

Yeah its 2000 dollars per pc. 2000 for all 15 comps would just be wrong, lol.

Broadband isnt an issue, were gonna have 2 dedicated T1s 8)

So the best bet right now would prolly be to justget a mobo that supports dual core, but just get single core for now to save money. (Which wont really matter because dual core wouldnt see much of an improvment) And in a year or 2 trade in the cpus for dual core when game designers start using more dual core features like multithreading.