@Jams said:
@Alexandru said:
@Jams: 660 Ti ? Are you sure you don't have a CPU botleneck?
I don't have a CPU bottleneck. It is an early generation i7 920, but it's more than enough to run games. The way they made the 660 Ti cheaper was to cut the memory interface from 256-bit to 192-bit and it definitely can show up in certain types of games. For instance, one of the games I tested the card out with was Everquest 2. The 285 could handle it on near max no problem. The 660 Ti would bog down pretty bad on parts where there was a lot of enemies in sight and in one city in particular, the games FPS dropped to single digits until I dropped the settings to really low. But in the Witcher 2, I couldn't really run it maxed out on the 285, but I could on the 660Ti even with ubersampling on.
I find it hard to believe that a 13 GB/s difference in memory bandwidth (which is about all that the 285 has over the 660 Ti) would be the cause of an old game (notorious for being CPU bound, mind you) running this bad. It's more likely that this is just a driver issue with the newer cards. And while you're correct about cutting the memory bus down to 192-bit, you're forgetting that the 660 Ti runs much faster GDDR5 memory than the 285's GDDR3. Running faster memory allows you to get the same or better bandwidth rates even if you cut down the bus width, so it's not as significant as you may think (think of it as a street, wider street with lower speed vs a narrower one with a much higher top speed allowed). A 680 has half the bus width of a 285, and yet that's easily 35 GB/s ahead in memory bandwidth.
Regardless, something's wrong with your setup or drivers if you're not getting significantly better results than your 285 (at least in newer games, where those should definitely be optimized for newer cards with fairly functional drivers).
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