By emphasizing leadership in the analysis of wafer process and packaging techniques , as well as the best array of PCB, TwinMOS has improved the Clock Frequency of memory to 4.3 ns by utilising voltage as low as 2.7V?}0.1V, with signalling output to 466MHz. TwinMOS PC3700 memory chips are marked as 43B, which stand for 4.3ns/CL2.5 (see figure 2). The result is unsurpassed performance as measured by industry benchmark tests.
By examining the testing result of SiSoft Sandra 2003 Memory Bandwidth Benchmark using Gigabyte GA-8SQ800 Ultra motherboard (using SiS655 chipset?j with over-clocked CPU, the TwinMOS PC3700?iCL2.5?j is 15.4% higher than that of PC3500?iCL2?j, and even 31% higher than that of PC3200?iCL2?j (See figure 3). The efficiency of TwinMOS PC3700(CL2.5) is still 23% higher than PC3200?iCL2?jeven while using non-overclocked CPU.(See figure 4).
A plethora of memory modules in the marketplace such as PC3500?i433MHz?j and PC3600?i450MHz?jare still adopting 5ns memory chip. The operating efficiency may be enhanced by heightening the frequency, but we always must ask ourselves: Does the motherboard support such arrangement? What is the time lag for synchronous signal? What is the solidarity of output signal?cetc. These questions are very relevant to the stability of the computer system. Some power users intentionally raise the supply voltage of memory up to higher than 3V, which actually damages the life of memory severely, and hindering the efficient operation of the heatsink covering the module.
With some many different types of memory modules on the market, how do you identify the fastest DDR? The simplest way is to examine if the chip codes of different producers fit the industry standard. For example, the last three figure of TwinMOS chip codes ?g50B?h stands for 5.0ns/CL2.5; 50A for 5.0ns/CL2; 43B for 4.3ns/CL2.5, etc. DDR 466MHz is almost the utmost representation of 1st generation DDR I chip process. Moving forward, BGA (Ball Grid Array) or CSP (Chip Scale Packaging?j is the only way to enhance memory frequency beyond 500MHz.
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