You know what? I'm going to post my ini. If a machine like mine can run Ultra, with tree and land shadows enabled, and with the http://www.skyrimnexus.com/downloads/file.php?id=31, then there is something other than the GTX 580 that's causing problems.
Here's my specs:
1 EVGA GTX 580 (Core clock @ 772Mhz, Shader clock @ 1544 Mhz, and memory clock @ 1778Mhz )
1 Intel Core 2 Quad Q9550 2.83 Ghz overclocked at 3.20 Ghz
- Make sure your CPU isn't being throttled by heat management in the BIOS, but I suggest not turning it off unless you are absolutely sure that the heatsink/fan/cooling pipe can handle the load. If you have a high-end CPU and is using the cooling fan that comes with it, I'd leave it alone.
6 GB 1066Mhz DDR2 RAM underclocked at 1022 Mhz
- Some of you might want to check the memory clock setting in the BIOS. Many FSB linked clocking ratios are at 2:1 or 3:2 when set to automatic, so a FSB set to run at 1600 Mhz may have the memory clock running as low as 800Mhz, thus possibly underclocking your RAM. Mine's underclocked and working at a 3:2 ratio because it seems that the memory controller doesn't like 1066 Mhz very well.
1 SoundBlaster X-Fi Titanium
- Yes, sound again matters in this game. Depending on what you use, you might have to set your sound card's output to something lower-quality.
1 1TB WD Caviar Green HDD
- Can't confirm this yet, but computers with SSDs do seem to have trouble with running this game.
1 850W Thermaltake PSU
- This is starting to age too, but it shouldn't matter.
The rest should not make much of a difference, unless you have a really old DVD drive installed in your computer.
As for the SkyrimPrefs.ini, here you go.
This is for GTX 580 users only! If you want to attempt it though with a card that's not a 580, you need to change the sD3DDevice to your card's name(i.e. "NVIDIA GTX 470" or "ATI HD 6950")
Spoiler
[General]
fBrightLightColorB=1.0000
fBrightLightColorG=1.0000
fBrightLightColorR=1.0000
iStoryManagerLoggingEvent=-1
bEnableStoryManagerLogging=0
[Imagespace]
bDoDepthOfField=1
iRadialBlurLevel=2
[Display]
iBlurDeferredShadowMask=3
fInteriorShadowDistance=3000.0000
fShadowDistance=8000.0000
iShadowMapResolutionSecondary=1024
iShadowMapResolutionPrimary=2048
iShadowSplitCount=2
iMaxAnisotropy=16
fLeafAnimDampenDistEnd=4600.0000
fLeafAnimDampenDistStart=3600.0000
fTreesMidLODSwitchDist=10000000.0000
fGamma=1.2400
fDecalLOD2=1500.0000
fDecalLOD1=1000.0000
fSpecularLODStartFade=2000.0000
fShadowLODStartFade=200.0000
fLightLODStartFade=3500.0000
iTexMipMapMinimum=0
iTexMipMapSkip=0
iWaterMultiSamples=0
iMultiSample=8
iShadowMode=3
bTreesReceiveShadows=1
bDrawLandShadows=1
bFull Screen=1
iSize H=1200
iSize W=1920
fMeshLODFadePercentDefault=1.2000
fMeshLODFadeBoundDefault=256.0000
fMeshLODLevel2FadeTreeDistance=2048.0000
fMeshLODLevel1FadeTreeDistance=2844.0000
fMeshLODLevel2FadeDist=3072.0000
fMeshLODLevel1FadeDist=4096.0000
iScreenShotIndex=9
bShadowMaskZPrepass=0
bMainZPrepass=0
iMaxSkinDecalsPerFrame=25
iMaxDecalsPerFrame=100
bFloatPointRenderTarget=0
sD3DDevice="NVIDIA GeForce GTX 580"
bFXAAEnabled=0
iShadowMapResolution=4096
fShadowBiasScale=0.1500
iShadowMaskQuarter=4
iAdapter=0
iPresentInterval=0
iShadowFilter=3
bTransparencyMultisampling=0
bDrawShadows=1
[Grass]
b30GrassVS=1
fGrassStartFadeDistance=7000.0000
fGrassMaxStartFadeDistance=7000.0000
fGrassMinStartFadeDistance=0.0000
[MAIN]
bGamepadEnable=1
bCrosshairEnabled=1
fHUDOpacity=1.0000
bSaveOnPause=1
bSaveOnTravel=1
bSaveOnWait=1
bSaveOnRest=1
fSkyCellRefFadeDistance=150000.0000
[GamePlay]
bShowFloatingQuestMarkers=1
bShowQuestMarkers=1
iDifficulty=2
[Interface]
bDialogueSubtitles=0
bGeneralSubtitles=0
bShowCompass=1
[Controls]
fGamepadHeadingSensitivity=1.0000
fMouseHeadingSensitivity=0.0280
bAlwaysRunByDefault=1
bInvertYValues=0
bGamePadRumble=1
bMouseAcceleration=1
[Particles]
iMaxDesired=750
[SaveGame]
fAutosaveEveryXMins=15.0000
[AudioMenu]
fAudioMasterVolume=1.0000
fVal7=1.0000
uID7=0
fVal6=1.0000
uID6=0
fVal5=1.0000
uID5=0
fVal4=1.0000
uID4=0
fVal3=1.0000
uID3=94881
fVal2=0.4000
uID2=466532
fVal1=1.0000
uID1=554685
fVal0=0.8000
uID0=1007612
[Clouds]
fCloudLevel2Distance=262144.0000
fCloudLevel1Distance=32768.0000
fCloudLevel0Distance=16384.0000
fCloudNearFadeDistance=9000.0000
[TerrainManager]
fTreeLoadDistance=75000.0000
fBlockMaximumDistance=250000.0000
fBlockLevel1Distance=70000.0000
fBlockLevel0Distance=35000.0000
fSplitDistanceMult=1.5000
bShowLODInEditor=0
[NavMesh]
fObstacleAlpha=0.5000
fCoverSideHighAlpha=0.8000
fCoverSideLowAlpha=0.6500
fEdgeFullAlpha=1.0000
fEdgeHighAlpha=0.7500
fEdgeLowAlpha=0.5000
fTriangleFullAlpha=0.7000
fTriangleHighAlpha=0.3500
fTriangleLowAlpha=0.2000
fLedgeBoxHalfHeight=25.0000
fEdgeDistFromVert=10.0000
fEdgeThickness=10.0000
fPointSize=2.5000
[Trees]
bRenderSkinnedTrees=1
uiMaxSkinnedTreesToRender=20
[Decals]
uMaxDecals=1000
bDecals=1
bSkinnedDecals=1
uMaxSkinDecals=100
uMaxSkinDecalsPerActor=60
[LOD]
fLODFadeOutMultObjects=15.0000
fLODFadeOutMultItems=15.0000
fLODFadeOutMultActors=15.0000
fLODFadeOutMultSkyCell=1.0000
[Launcher]
bEnableFileSelection=1
bShowAllResolutions=1
uLastAspectRatio=4
[BlurShaderHDR]
bDoHighDynamicRange=1
[BlurShader]
bUseBlurShader=0
[Water]
iWaterReflectHeight=512
iWaterReflectWidth=512
bUseWaterDisplacements=1
bUseWaterRefractions=1
bUseWaterReflections=1
bUseWaterDepth=1