DDR3 Memory Shown With a CAS Latency of 7 (CL7)
Many enthusiasts freaked out seeing DDR2 memory launching with CL4 and CL5 timings, but that is nothing compared to where DDR3 system memory is at today. Elpida has some DDR3 desktop memory on display at the recent ISSCC 2006 event with a CAS Latency of 7! While many may not like the sounds of CL7 memory the DDR3 modules will run at a lower voltage of 1.3-1.5 Volts! (Think better battery life) In the meantime we will stick to our trusty CL3 DDR2 675MHz modules!
Talking about memory, one talk – not talked about much, though – was covering Elpida’s “standard” DDR3 memory, the one meant for next-generation PCs and servers, for instance. Their 512 Megabit DDR3 SDRAM with a column access time of 8.75 ns (CL7 latency) and data transfer rate of 1.6 Gigabits per second (Gbps), or 1.6 GHz DDR3 for the laymen, would be the fastest DDR3 general purpose memory chip announced by now – all that at the usual 1.5v DDR3 voltage level, saving some electricity compared to the DDR2. What is more interesting is that, at an even lower 1.36 volts, the RAM runs fine at 1.333 GHz (DDR3-1333) grade with CL6 latency (8.4 ns total CAS time), which matches the CAS time of the fastest current DDR2 memory, the Corsair 5400UL (DDR2-667 CL3) at 1.9 volts.
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