Clock speeds: Riva tuner
http://downloads.guru3d.com/download.php?det=163To adjust my memory and the core, you basically just slide that little arrow to the right... if I recall correctly, the factory defaults sit right around 575/1780MHz... and you probably won't be able to push the core extremely high—maybe hitting a ceiling around 620-660MHz—but the memory should be able to reach up to 2200MHz if my memory serves me right...
Now, when you're overclocking, there is one absolutely vital link in the chain, and that is your cooling setup... You’ll want to switch your fan settings from
Auto over to
Fixed (setting it to about 60% usually does the trick)... One really great thing about Riva is that it includes a super handy feature which is
hardware monitoring—this lets you keep a close eye on your frequencies and temperatures while you're running through something like a 3DMark stress test... Just make sure those temperatures don't climb past 80 degrees Celsius...
You even have the option to create your own custom startup profile where you can set specific fan speeds and frequencies all at once...
CPU OverclockingThere isn't really any need to get too fancy here:
Keep your CPU voltage somewhere between 1.35V and maybe 1.5V max, at least until you actually figure out what you're doing...
The E4300 has a 9X multiplier, so if you take 300 FSB * 9X, you get 2700MHz, which should run quite smoothly at 1.3V... That’s more than enough for 24/7 usage, and with that voltage, your temperatures shouldn't even cross 45 degrees when you're running Orthos... You can check the temps using Core Temp (definitely try version 0.95.4 first)
You likely already know about the PCI-E lock and how the memory ratio depends on the FSB frequency... just try to keep it between 700-900MHz while aiming for the lowest possible latencies you can manage (anywhere from 4-4-4-12 up to a maximum of 5-5-5-18)... And whatever you do, don't push the memory voltage higher than 2.2V...
There is a much more detailed breakdown described over here:
http://forum.pcekspert.com/showthread.php?t=88200