The new DDR2 memory specifications are clearly exciting but one should be aware that memory bandwidth is the same as the DDR-1 at the same memory clock speed eg. 400Mhz and also the problem of higher latencies when the memory clock speed gets higher where the memory performance will be affected. A typical DDR2-533 memory module will sport a latency of 4-4-4 (CL-tRCD-tRP) which is considered pretty bad from the performance enthusiasts and overclockers’ point of view. However, Kingston at IDF said that they are working on a low latency DDR2-533 (PC2 4300) of their popular HyperX series that will sport a latency of 3-3-3 (CL-tRCD-tRP). We also can’t ignore the fact that the DDR2 modules will run at lower VDIMM of 1.8V and the ability to scale much higher memory clock speed to 667Mhz and 800Mhz.

The new DDR2 memory specifications are clearly exciting but one should be aware that memory bandwidth is the same as the DDR-1 at the same memory clock speed eg. 400Mhz and also the problem of higher latencies when the memory clock speed gets higher where the memory performance will be affected. A typical DDR2-533 memory module will sport a latency of 4-4-4 (CL-tRCD-tRP) which is considered pretty bad from the performance enthusiasts and overclockers’ point of view. However, Kingston at IDF said that they are working on a low latency DDR2-533 (PC2 4300) of their popular HyperX series that will sport a latency of 3-3-3 (CL-tRCD-tRP). We also can’t ignore the fact that the DDR2 modules will run at lower VDIMM of 1.8V and the ability to scale much higher memory clock speed to 667Mhz and 800Mhz.