hey,i have been reading a lot of posts regarding FSX and it's frame rates with different computers on this forum. i have not come across any post mentioning a dual gpu setup, though.does anybody (beta testers!) have an SLI configuration? what performance are you getting? a little better? alot better??share with us!! :)thank you

SLI will have no effect on FSX. The reason you haven't seen any posts about it is because the matter was laid to rest some time ago. I can't find it but tdragger posted it quite some time ago. Also, there was a lengthy article on SLI & FSX on one of the MS Blogs but it's so old, it's disappeared.CalCYXX

FSX is cpu limited from what i understand, so throwing a more powerful video card at it past a certain point will do no good. A core2 with 2 gigs of high speed ram and a RAID0 setup with a midrange 7900gt is about as good as it's going to run right now.

I wouldn't jump that far ahead."Q: FSX supports setups with two video cards. Can simmers experience the benefits of such setups when using DirectX 9 or do the results only show when using DirectX 10?A: FSX does not benefit from SLI on DX9."This is from press day in Redmond.

how are there no benefits? you are running almost twice the power of one video card.

>how are there no benefits? you are running almost twice the>power of one video card.SLI is a driver "thing"!If the driver can not handle some rendering technique, you will not have a benefit.And you can not use multi-monitoring, yet.Will Direct3d 10 and the cards will give you this?I do not know.Horst

http://www.xbitlabs.com/articles/video/dis...00u-sli_23.html

That review is over a year out of date and used an old AGP card.

I have an SLI setup and I refer to FS9. It is true that SLI will not significantly improve frame rates if at all. However, I have recently stumbled across a gem. I use a pair of Nvidia 7800GTX cards and I set them in a program profile to run as 16AASLI in FS9 ( I had previously been running on 4AA) and it made a real difference to screen rendition the textures improved noticeably and diagonal line jaggies (airport markings etc) were almost eliminated. It was, for me, like getting a significant upgrade to FS9. I also have the FSX demo but because of the demo rendering issues (water etc) the effect is not so noticeable but it is still there. If any one out there has an SLI setup I would like to see them try the same approach and read about their results. It certainly made SLI for FS9 worthwhile whether or not I would go to SLI for just FS is a moot point.

HelloI can confirm without a doubt that the SLI Rendering Mode option when set to "SLI AntiAliasing" is a mode that works with FS9. In order to have make this mode available, you must execute the coolbits reg file. This file can be found on many sites including Guru3d. I believe they call it coolbits2. Again with many video card tweaks for fs, your gain most of the time will lean towards quality not a gain in FPS. This is true with an upgrade of a video card and also many tweaks that are offered. I run 2 7800 GTX's in SLI mode at 1600x1200 with this mode, which offers and unprecedented level of AA and Anisio.RegardsBob Ginn

I guess we'll see next month, but I was really hoping that FSX would push more to the graphics card(s) and get away from so much CPU dependency. SLI isn't exactly new, cutting edge stuff.

When already talking about SLI, what about ATI's Crossfire technology? Same thing? Quality improvement - asking since I will upgrade soon to Core2 and also a new mainboard, so thinking also about getting Crossfire board with a 2nd 1900XTX.

And still the AGP card can in most cases keep up with the SLI-PCIex combo, but that's just a sidenote.Actually the review gives good insight and leads to conclusions which still hold true today (feel free to find them confirmed in this rather newer benchmark overview: http://www23.tomshardware.com/graphics.html ): SLI works best in resolutions of 1600x1200 and up (and is therefore largely unattractive for people with "sane" TFTs) and is far from giving considerable speed gains in a majority of games.Hey, I don't like this either, I bought a SLI mainboard last year. But obviously it makes more sense to just replace your card with a more powerful one now and then, the way you've always done (at least if you don't own a 21" TFT).Regards,http://www.bremmekamp.com/img/misc/avsim.jpg

>execute the coolbits reg file. This file can be found on many>sites including Guru3d. I believe they call it coolbits2.If a bit savvy with regedit you can just navigate to HKEY_LOCAL_MACHINESOFTWARENVIDIA CorporationGlobalNVTweak, create a new DWORD value named "CoolBits" there and assign to it a data value of 3. :)Regards,http://www.bremmekamp.com/img/misc/avsim.jpg

Well, I am not that saavy with all the video stuff but here is the reg file contents: [HKEY_LOCAL_MACHINESOFTWARENVIDIA CorporationGlobalNVTweak]"NvCplExposeWin2kDualView"=dword:00000001"NvCplTvLocaleAutoDetect"=dword:00000001"NvCplAllowForceTVDetection"=dword:00000001"NvCplEnableActiveApp"=dword:00000001"DisableApplyColorsAtStartup"=dword:00000000"NoMenus"=dword:00000000"OverlayPageState"=dword:00000000"CinematicPageState"=dword:000000ff"NvCplThermalSettings"=dword:00000020"NvCplEnableScreenMenuPage"=dword:00000001"NvCplCustomResConfig"=dword:00000000"NvCplEnableAdditionalInfoPage"=dword:00000001"NvCplDisablePerfQualPage"=hex:00,00,00,00"NvCplEnableAGPSettingsPage"=dword:00000001"CoolBits"=dword:ffffffff"NvCplEnableOverlaySpanControl"=dword:00000001"TwinViewCapsOverride"=dword:00000001"NvCplEnableDesktopOverlapPage"=dword:00000001"NvCplEnableTroubleshootingPage"=dword:00000001"NvCplDisableRefreshRatePage"=dword:00000000"NvCplDisableRotateAngles"=dword:00000000"NoPages"=dword:00000000"NvCplEnableClearViewPage"=dword:00000001"NvCplEnableFanControl"=dword:00000003"NvCplEnableFrameSyncPage"=dword:00000001"NvCplEnableHardwarePage"=dword:00000001"NvCplEnablenForcePage"=dword:00000001"NvCplEnablePwrMzrOnDesktopMenu"=dword:00000001"NvCplEnableRotationColorSettings"=dword:00000001"NvCplNvThermPage"=dword:00000001"PowermizerPreferences"=dword:00000000"QTwkEnableModeChangeWarning"=dword:00000001[HKEY_LOCAL_MACHINESOFTWARENVIDIA CorporationGlobalOpenGL][HKEY_LOCAL_MACHINESOFTWARENVIDIA CorporationGlobalOpenGLDebug]"ShaderObjects"=dword:00000001