First post, first build

there are a couple of problems with that build.

the motherboard doesnt support an 8 core vishera
the 8 core does not have onboard graphics.

You could do much better for the money.
i'll do a build and edit my post later.

Build
CPU $123
AMD FX 4300

Motherboard $100
Gigabyte GA-970A-UD3

Ram $33
Adata 8GB 1600mhz

HDD $50
Seagate Barracuda 1TB

GPU $140
EVGA Geforce GTX 650ti

Case $40
Bitfenix Merc Beta

PSU $50
Corsair CX430 V2

Total ~$540
Edited by thepoopscooper - 11/17/12 at 2:37pm

8320 is not an APU, it doesn't have an iGPU.
You're talking about the A10 , get it with this Mobo or this and this GPU which you'll be able to Crossfire with the iGPU for decent performance boost.
PSU would be overkill for that setup (you can also go for the A6 or A8), save some cash by getting this PSU (39$)..

Welcome to OCN

Buy your build from a Canadian retailer such as NCIX.ca or Memory Express instead. It is always superior over Newegg.ca in that you get lower shipping times and always get a lower cost (if Newegg costs less, you can price match at both of these stores and still get cheaper shipping).

Regarding your needs, could you elaborate? Which games, what amount of multitasking, etc.

A much, much, much better build!

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD FX-4300 3.8GHz Quad-Core Processor ($122.57 @ DirectCanada)
Motherboard: Gigabyte GA-990FXA-UD3 ATX AM3+ Motherboard ($119.99 @ Memory Express)
Memory: Samsung 8GB (2 x 4GB) DDR3-1600 Memory ($38.99 @ Newegg Canada)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($49.99 @ Newegg Canada)
Video Card: MSI Radeon HD 7850 2GB Video Card ($194.99 @ NCIX)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($44.99 @ NCIX)
Power Supply: PC Power & Cooling Silencer MK III 400W 80 PLUS Bronze Certified ATX12V Power Supply ($40.42 @ DirectCanada)
Total: $611.94
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-11-18 22:31 EST-0500)

You can get Windows 8 for $40 off Microsoft directly.

You should be careful using ubuntu for gaming, you can run games through wine, but in my experience it never ends well. Apparently, GW2 has been decent through wine, but i would check the net for some experiences.

All these suggested may not be necessary in my opinion

Gigabyte GA-990FXA-UD3
Samsung 8GB 1600mhz
HD 7850
Coolermaster HAF X
1TB HDD

Sure these are nice components, but OP might be trying to get into gaming and won't be doing anything high end.

The Gigabyte GA-990FXA-UD3 is expensive and not needed, OP could get away with a GA-970A-UD3. Seen as there is no crossfire involved going for the 990FX chipset is a pure waste of money.

8GB 1600mhz? Go for a cheaper make, branded expensive RAM has no value for an average user. Branded expensive RAM is really for overclocking and enthusiasts. I use some cheap Eudar CL9 RAM, it does the job.

HD 7850 is depend OP what resolution will you be running at? A HD 7850 is a good choice if your into gaming at high resolution and want it to last for a few years, but if you are going to be running at 1600x1200 and under, the HD 7770 is not bad to be fair. Its a good starter card, I use it at 1440x900 and yes it can max out the latest games. A HD 7850 may be overkill depending on your resolution. If you are going to be 1080p gaming with say 22" monitor yes the HD 7850 would be suitable. It depends on res

Coolermaster HAF X is a waste in my opinion, but to be honest I don't get why people spend so much money on a flashy case, for a first build you won't be looking at the case. Go for good airflow than looks or brand. Even a cheap case with a lot of vents and purchasing a lot of decent fans would give better results over the top looking cases.

1TB HDD is useful if you plan to store a lot of videos, pictures and a lot of games. I still can't fill my 500GB drive so depends how much you are going to be storing. An SSD will give a very nice performance boost, but only get one if you know how to manage it, that is using it for a boot drive, otherwise it may get fill and a bit sluggish quickly if you don't manage storage correct.

OS: Ubuntu won't run .exe (Windows) games natively, so you can't just open up your CD tray and click setup, you'll need to install wine. As an OS, ubuntu is a lot smoother than Windows, but again you won't be able to just pick up and go with games. So I would recommend Windows 8 just because its cheap.

What I reckon would be fine:
FX-6300
Gigabyte GA-970A-UD3
HD 7770/HD7850 (if you have a large monitor running at 1600x1200+)
Any DDR3 1333mhz RAM
1TB Seagate drive (if you will be storing a lot of videos and games on it)
SSD if you really want things to happen quick, if you can deal with a bit of slow copying and moving now and then a HDD will serve fine
XFX 550W power supply

The FX-4300 is not worth it considering the FX-6300 is only slightly more in price with the benefit of good multitasking and can match the top Phenom II X6 and some i5s
The CX Corsair isn't the best quality power supply


As for the case, it is personal choice, but you may regret spending a lot on a top notch case when cheaper cases can look fine and perform pretty well.
Edited by mikeo01 - 11/19/12 at 9:29am

I'm pretty sure that this is a result of an outdated game engine (or so I read, can't pull it off the top of my head) but you are probably going to have a better GW2 experience on an i3 - unless you're going to be attempting some heavier multitasking i.e. FRAPS or intensive background tasks you know of. Any other games?