Just purchased the newly released ASUS GTX580 Direct CU II card to replace my current ASUS HD5870 Matrix Platinum card.
I bought the HD5870 for two reasons:
* allows connecting to 3 displays (I only have one currently, however)
* GTX480 was reported very hot and noisy.
Although I am getting average 41 FPS in most sceneries with the HD5870, some micro-stutters and under 20 FPS performance within dense areas reamin the barrier for my system to break. As nVidia card is generally agreed to be better for FSX and reviews of GTX580 show that the new card is now cooler and less noisy (especially the modify Direct CU II version), I decided to wait no more to find out the true side of it myself.
Initially tested it for 5 to 6 hours using fsx.CFG configured for HD5870. My first impression is that it doesn’t make huge difference but an improvement of at least 5 FPS in average can be seen.
Hoping to get better result after finetuning it later.