Realistic FX adds a New Gen Graphic look to skyrim. My Preset is a combination with SweetFx, IMAGINATOR and Realistic Lightning. It comes also with zero performence lost. I have this created for all Users that can not run a enb mod. But i think i make a new preset for high and systems. a enb preset is my new project for the next time.

My Specs: 
Intel i7-4770 @ 3.40GHz
8gb Ram
Asus GeForce GT 640 4 gb 

You can see my Graphic card is low-end and old :) and i have on ultra setting with custom shadow setting 30 - 40 Fps Outdoor and 40 - 60 Fps Indoor

Setting for low and middle End Rigs with zero performence lost
Enb Setting for High-End Rigs with dof,ssao,sss and reflections[comming soon]
easy customizing with SweetFx
Custom Mod Collection + Guide and ini tweaks [in progress]

Steam\SteamApps\common\Skyrim
My Documents\My Games\Skyrim
%LOCALAPPDATA%\Skyrim

[General]
sIntroSequence=  ///Disables the intro sequence for a faster startup
fFlickeringLightDistance=8192 ///Helps prevent lighting pop-in

[Display]
///Improves shadow changes as the sun moves through the sky
fSunShadowUpdateTime=0.25 ///Transition time of sun-shadow movement
fSunUpdateThreshold=1.5 ///Time between sun-shadow movement
iPresentInterval=1 ///This line needs to be manually added, as it is misplaced into SkyrimPrefs.ini by Skyrim! - REQUIRED by ENBoost or enb

[Grass]
iMaxGrassTypesPerTexure=7 ///increase grass diversity with a small cost to performance (yes, 'texure' and not 'texture'). Consider set to 3 if using not skyrim Flora Overhaul

[Combat]
///Shift the point of aim to the center of the aiming reticule for arrows and crossbows.
f1PArrowTiltUpAngle=0.7 
f3PArrowTiltUpAngle=0.7 
f1PBoltTiltUpAngle=0.7 
f3PBoltTiltUpAngle=0.7 ///this tweak is not present in the default INI and needs to be entered manually

[Interface]
fBookOpenTime=200.0 ///speeds up the book-opening animation
///move the HUD elements closer to the borders of the screen
fSafeZoneX=10
fSafeZoneY=10 
fSafeZoneXWide=10 
fSafeZoneYWide=10

[VATS] 
///Increase ranged killcam frequency (or disable killcams)
fVATSCastingAfterKillDelay=1.2000
uVATSRangedPercentSneak=100
uVATSRangedPercentGlobal=100
bVATSMultipleCombatants=1
bVATSForceRanged=1
bVATSDisable=1  ///enable(0) or disable (1) killcams

[Display]
iMaxAnisotropy=16 /// enb users set it to 0
iMultiSample=0 ///Realistic fx used smaa or fxaa
bTreesReceiveShadows=1 /// Recommended for Realistic FX 
bDrawLandShadows=1 ///Recommended for Realistic Fx
bFloatPointRenderTarget=0 /// enb users set it to 1 needee for enbs
iPresentInterval=1 ///this line can deleted use in skyrim .ini

[Controls]
bMouseAcceleration=0

[Display] 
iTintTextureResolution=2048 /// HighRes WarPaint

[General]
ClearInvalidRegistrations=1

[Memory]
DefaultHeapInitialAllocMB=768 /// or set 1024
ScrapHeapSizeMB=256  /// or set 512

[TerrainManager]
fTreeLoadDistance=75000.0000
fBlockMaximumDistance=300000.0000
fBlockLevel1Distance=1400000.0000
fBlockLevel0Distance=75000.0000
fSplitDistanceMult=4.000
bShowLODInEditor=0

[Main]
fSkyCellRefFadeDistance=500000.00000

add this line to your skyrim.ini

[Display]
fNearDistance=25.0000 /// or 15.0000