AMD Radeon HD 7870 GHz Edition & Radeon HD 7850 Review: Rounding Out Southern Islandsby Ryan Smith on March 5, 2012 12:01 AM EST
Portal 2 continues the long and proud tradition of Valve’s in-house Source engine. While Source continues to be a DX9 engine, Valve has continued to upgrade it over the years to improve its quality, and combined with their choice of style you’d have a hard time telling it’s over 7 years old at this point. Consequently Portal 2’s performance does get rather high on high-end cards, but we have ways of fixing that…
Portal 2 ends up being at about the middle of the road as far as performance goes. The 7870 enjoys a smaller lead over both the 6970 and the GTX 570, while the 7850 takes one of its biggest losses versus the 6950 and GTX 560 Ti at around 3-5%. The good news is that at these performance levels, performance is good enough for the SSAA bonus round, which sees the 7870 hitting just shy of 60fps. The 7850 on the other hand only falls further behind the GTX 560 Ti with SSAA, and at 45fps probably isn’t going to be quite fast enough to make the cut.