ummm.... is it just me or is Jetline Systems agreeing with your statements on SLI performance? From what I have read on their performance link, they DO NOT recommend SLI for FSX. SLI Impact on FSX(multiple graphics card configurations)Our testing has proved that SLI graphics will only improve performance when run on extremely high display resolutions. Although many games benefit from SLI, FSX typically will not. A single GPU (single card) solution is recommended.