Overclocking the Pentium-4 involves basically one thing and that's running the Front Side Bus speed beyond the manufacturer specification. Thanks to the FSB / Memory ratios in place on many motherboards, that does not necessarily mean you'll be forced to run the memory beyond specification. However, the Pentium-4 is a very bandwidth hungry processor and the performance benefits of synchronous clock speed Overclocking are stunning. A perfect world Overclock would be running the CPU and Memory synchronously on a 250MHZ (or faster) bus and while this speed does not conform to JEDEC specifications, PC-4000 memory has an unwritten albeit understood requirement. It must perform with 100% stability at a 250MHZ bus. Anything above and beyond the 250MHZ mark is a bonus, since PC-4000(DDR500) RAM is already running Overclocked.

     Manufacturers generally pre-test modules and certify those that perform at 250MHZ speeds, since there is no true specification to standardize and gauge performance. Along those lines, timings and voltage levels may vary from one manufacturer to the next as some modules may require higher Column Access Strobe settings and more voltage to accept the higher clock speeds. A well known memory module to use on DDR DIMMs is made by Hynix, and Kingston has armed their latest DDR500/PC4000 modules with this very module.

Specifications

Kingston KHX4000K2/ 1 Gigabyte Dual-Channel Memory Kit

     ► 2x 512MB 168-pin DIMM
     ► Module Timing: 3-4-4-8/1
     ► Module Configuration: 64M X 64 Non-ECC 500MHz 184-pin Unbuffered DIMM 
     ► Module Voltage: 2.6V
     ► Warranty: Lifetime