My advise if you are considering purchasing from Centre.com is don't!
Whilst their products are reasonably priced if not cheaper, their customer service is beyond terrible.

I ended up with a faulty MSI motherboard and 3 months later I'm still waiting hear from centre.com what is happening. Despite weekly attempts to contact them, I've barely received any response from them.

I'm now at the point where I've contacted the ACCC.
My advise checkout Scorptec or Umart, they're reasonably priced and have good customer service.

Approximate cost: $399