I am going to get a duron 1.6 and an Aero 7 lite until i can afford a barton 2500 or something, but until then i will just get the duron.
I have an Asus A&N8X-X motherboard to use it on and i wan't to overclock it a little.
Ive seen people have managed 2.5Ghz with it but thats a little dangerous IMHO, anyone recommend any speed that should be safe?


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There is no 'safe' speed. The core is basically a Tbred (assumably TbredB) with 64k L2 instead of 256k L2 which will knock perf around 10% clock for clock (ie Duron @ 2.2ghz is roughly equal to a Tbred @ 2.0ghz). You can make an estimate or look for averages but you must find the particular CPU's limit, it's only dangerous if you take sudden leaps based on what others have achieved. As a rough idea all TbredB and Barton tend to yield 2.10ghz VERY easily and 2.3ghz is not uncommon esp if you up the voltage a little (IMHO 1.70v MAX). However Durons with less cache in use should be able to clock a little higher, maybe 2.2ghz to 2.4ghz as an average?
Anyway find your own CPU's limit by upping the multiplier 1 step at a time and test thoroughly for stability each time. When you find the fastest you can go you need to work out what is limiting you ... could be mobo, FSB, RAM, HSF, case (airflow & ventilation), PSU (outside chance) or simply the top that CPU can achieve. If you're sure the problem is the CPU itself then you can up the voltage 0.05v and see if it allows you to go higher. If not then add another 0.05v etc ... again you MUST test thoroughly each time not simply POST or load Windows. Adding voltage creates severely more heat and will stress your CPU a LOT more, 1.65v is std for these type of cores so if you get 1.50v stock voltage then 1.65v is not truly over-volting it.
Rem FSB speed is important, certainly up to 333FSB if not 400FSB. If you find your CPU can run at 2.1ghz then you can try achieving that speed with a faster FSB, ie 10.5x200 or 12.5x166 instead of 15.5x133 (bus speed is DDR so 133mhz=266FSB). Set the multiplier first and ensure it takes and then use the higher FSB speed, that's the safest way. ALso ensure your RAM and mobo can handle the desired FSB speed.
