Transcend PC2-4200 Overclocking Madness
 

Once again we test the limits of Transcend DDR2 533, this time in 1024MB (x2) module size. If you recall, overclocking DDR SDRAM resulted in higher frequencies when smaller 256MB modules were used. Fortunately DDR2 doesn´t seem to be bootstrapped in the same manner. Transcend memory has been keeping pace in performance with some of the more costly modules out there and for much less money. Their current DDR2-533MHz modules are based on Elipida E5108AE-5C-E IC´s and they´ve simply been spectacular.

http://www.madshrimps.be/gotoartik.php?articID=349

To some folks this excercise beats the quest for exotic cooling;)
I'm too, glad to have owned a processor with 1.3 Ghz overclock using air cooling with a little push on the vcore.

I guess the bases for overclocking are many but the single most important one is getting the most from what is already paid for.

The article reminds me of the Apacer OEM PC3200 that could reach 275 Mhz.