If you're looking for a computer that won't slow down and that can even handle some games I think you've found the right choice but if you need a better performer i suggest you get this https://www.ozbargain.com.au/node/323913. Don't forget to email them if you want windows 10
Here are the Specs:
-JV APPROVED!
-Win 7/10
-Intel Core i5 3570 3.4Ghz Quad Processor
-8GB DDR3 RAM
-250GB HDD (Hard Disk Drive)
-Intel HD 4000 Graphics
-USB 3.0
-really compact size
-Important thing to note No wifi but you can overcome this issue by sticking one of these in the back http://www.gearbest.com/network-cards/pp_627896.html and obviously no hdmi
An alternative is the HP 8300 (http://www.ebay.com.au/itm/201689344613) but why choose i5 3470 3.2Ghz over i5 3570 3.4Ghz and Intel HD 3000 over 4000 but this is bigger so higher chance of you fitting in a graphics card
Original 20% off Selected Stores at eBay Deal Post
Or if you really tight why not buy this $88 pc http://www.ebay.com.au/itm/HP-Compaq-8000-Elite-Intel-Core-2… (credit to neil) (Only 2 left) and hook yourself up with a $30 monitor http://www.ebay.com.au/itm/Lenovo-ThinkVision-L1951p-19-Wide… throw in a graphics card and you will be able to play games at decent frames. In fact this was all typed up via a good old intel core 2 duo and yes i can keep 10 tabs open without crashing =) Source: https://www.youtube.com/watch?v=Vvih2sEeMgw Out of stock
If you're also in need of a monitor: https://www.ozbargain.com.au/node/323976 (Your probably going to need some connectors)(nm out of stock anyways)
If there's any issues you can contact the rep here https://www.ozbargain.com.au/user/189195
Wow 62 already sold, better hurry before it goes out of stock.
Edit: Seems to be intel hd 2500 instead of 4000.
Hi I have just received my unit today but some of the back ports are dented severely and making the machine unusable, probably due to motherboard damage as it is bent inward by the vga/com ports. I've aldy sent you a message on eBay.
After taking a closer look I think I might know how it got damaged. You applied bubble wrap vertically, i.e. leaving the front and back ports exposed, and then put the power cable at the back just behind the back ports without extra cushioning. Auspost is unfortunately not very gentle and there is some wriggle room inside the box, the machine is pressed against the 2 solid plugs on the power cable in transit and result in 2 dents at very unfortunate locations.
I think if you have wrapped it back and forth, protecting the ports with bubble wraps then the damage won't be so extensive. Just my 2 cents:) Hope it helps against similar problems in the future.