$1700 Pc Build (Is it compatible?)

For $400, you can get the GTX 670, which is better price to performance. The 670 even beats the 7970 in most cases. For gaming, get an i5-2500k. No difference in performance. What features of the mobo are you going to use? If you dont know some features, it is likely you wont use it, so consider just the V LX.

Hey an Aussie!
Good thing you came here, you can get better for your cash.

Case: HAF-XM. $159
http://www.pccasegear.com/index.php?main_page=product_i...

PSU: Silverstone Strider Plus 750W. $139
http://www.pccasegear.com/index.php?main_page=product_i...

CPU: i5-3570k. $245
http://www.pccasegear.com/index.php?main_page=product_i...

RAM: Corsair Vengeance 2x4Gb 1600Mhz Low Profile. $69
http://www.pccasegear.com/index.php?main_page=product_i...

Motherboard: AsRock Z77 Extreme4. $154
http://www.pccasegear.com/index.php?main_page=product_i...

GPU: Gigabyte HD7970 3Gb OC. $549
http://www.pccasegear.com/index.php?main_page=product_i...

HDD: Seagate Barracuda 2Tb 7200RPM 64MB Cache. $129
http://www.pccasegear.com/index.php?main_page=product_i...

SSD: Crucial M4 128Gb. $158
http://www.pccasegear.com/index.php?main_page=product_i...

Optical Drive: (unless you actually burn BLU-Rays or using discs is a big part of what it needs to do, any $20 SATA drive will do)
http://www.pccasegear.com/index.php?main_page=product_i...

Total: $1624
+ 64Bit windows if you need it : $1723
http://www.pccasegear.com/index.php?main_page=product_i...

That build will serve you well. If you want to save cash, go to StaticIce.com.au, put in your state (im guessing Victoria) and the component and itl find the cheapest place to get it.

gtx 670 is better value.

From the sites he will be buying its not really better. Its around 500$ and therefore he might aswell get the 7970.

Yes an aussie!   Thanks, Would you need a sound card with the motherboard?

here's my $1700 build-
case-corsair carbide 400r-
http://www.pccasegear.com/index.php?main_page=product_i...
excellent case with plenty of room,air flow,expansion slots,drive bays and over all a 9.5/10 case.
cooler-hyper 212 EVO-
http://www.pccasegear.com/index.php?main_page=product_i...
excellent cooler for it's price,will easily overclock your 2500k to 4ghz+
cpu-2500k-
http://www.pccasegear.com/index.php?main_page=product_i...
still best price to performance ratio.
gpu-Palit Jetstream gtx 670 2GB-
http://www.pccasegear.com/index.php?main_page=product_i...
very high rated design and will beat a stock 680 with some performance tweaks.receives a solid 9.7 from techpowerup-
http://www.techpowerup.com/reviews/Palit/GeForce_GTX_67...
hard disk-seagate 1tb hard drive-
http://www.pccasegear.com/index.php?main_page=product_i...
1tb is big enough for you(i guess) and is fairly fast drive.
ssd-Crucial m4 128gb-
http://www.pccasegear.com/index.php?main_page=product_i...
most reliable ssd IMO,very highly rated and quiet fast.throw your OS and main games and it will cut your loading times by a lot.
ram-Kingston hyperx 8gb-
http://www.pccasegear.com/index.php?main_page=product_i...
1600MHZ,1.5V and 8GB is more than enough for multitasking and gaming.
motherboard-Asrock extreme4 z77-
http://www.pccasegear.com/index.php?main_page=product_i...
excellent board for it's price with plenty of features including overclocking,SLi/CF,a lot of ports and other necessary stuff.
optical drive-LG 24x dvd burner-
http://www.pccasegear.com/index.php?main_page=product_i...
for burning CDs and stuff.
power supply-Silverstone strider+ 750w-
http://www.pccasegear.com/index.php?main_page=product_i...
Antec HCG 750w was my choice but for 5 bucks more you get a lot of new features.main highlights are-
excellent quality and customer support from silverstone
100% modular and 80+ silver certified
19db silent fan,800w peak power,plenty of connectors etc.
most importantly,it will run your pc flawlessly and you can also add another 670 for SLi in future.it is enough for 670 SLi and overclocks.
total:$1516
you still have some money left,i would suggest getting a better monitor or save up for another 670  
note:every component is high quality and compatible.good luck with your build and enjoy