The Radeon HD 7850 can be had for between $180 and $220 (AUD).
- You should be putting ~ 35% of your Total Cost of Ownership into the video card.
- The GTX550 Ti isn't a bad card, but you really should be looking at the GTX650 Ti or Radeon HD 7850 instead.
You can probably get a more modern video card from an honest vendor at a better price.
- The Radeon HD 6000's put the GTX500's series where it belonged; it wasn't much better than the GTX400 series.
- The GTX600 series competes well with the Radeon HD 6000 series and Radeon HD7000 series.