TweakGuides Does Orange Box
By Steve on Friday, October 12th, 2007 at 2:24 PM PST In Computer, Game Companies, Game Platforms, Valve
Koroush Ghazi has slaved away at yet another guide to tweaking the most out of your system for your favorite game. This time, Koroush revisits and updates his now legendary Half Life 2 & Source Engine Tweak Guide. However, do not shrug this off as some mere update:
This guide has been significantly updated as of HL2: Episode 2. Importantly, the tweaks in this guide also apply to every other Source Engine-based game including all Half Life 2 variants, CounterStrike: Source, Day of Defeat: Source, Vampire: The Masquerade, Team Fortress 2 and Portal. Make sure to refer back to this guide for updates.
Koroush has, as usual, put ALOT of effort into detailing all the in-game settings of the Source engine. We are sometimes given screenshot comparison results of the different values and a brief explanation of what they mean. Not stopping there, Koroush gives us valuable command line parameters for launching our favorite Source based game. Tired of hitting ESC on that TF2 intro video? Well, get rid of it with a simple command line parameter. Then we dig into the meat of the whole guide: the massive library of console commands or command variables (CVARs). This is where the heart of the true tweaker resides. It may seem daunting at first, but Karoush at least provides a small explanation as to what each setting does. Want to see your framerate? Want to see a graph of your network traffic? Want to bind more than one button to an in-game action? All are found via CVARs.
Yet again, Karoush has done an excellent job by finding morsels from every nook and cranny of the current Source engine. This is one serious overhaul I highly recommend worth checking out.
Via TweakGuides.com

This is a very impressive guide! Extremely helpful and has improved my fps dramatically, thank you. Even though I like to play on my server with very little latency (we get co-location service from Nationwide Bandwidth
67.90.47.47
), my computer isn’t that good so I didn’t have great fps.
please help, whats a parameter, cause i downloaded hl2 ep2 and it says i hv to change the parameters
read me files says:
Create shortcut on hl2.exe and add these parameters: -steam -game ep2
It will look like: X:\somedir\portal\hl2.exe -steam -game ep2