Gradus, an overclocker from Russia, has established a new high for SDRAM frequency. The best frequency ever achieved with SDRAM is now 238 MHz!

For this astonishing overclocking result Gradus uses a single stick of 128MB SDRAM memory with timings 3-3-3-7-9 (tCAS-tRC-tRP-tRAS-tCS). In combination with a Tualatin based Celeron processor, the memory frequency of 238.1 MHz is achieved on an ASUS TUSL2-C motherboard featuring the i815EP chipset. The memory is cooled by air cooling, which is remarkable given the high frequency.

For more information you can check out the HWBOT submission page or the validation at Valid.x86.fr.