DDR2 Rockets To 1GHz!
In the not-so-distant past, memory clock speeds were still very much in tandem with the system and processor bus speeds and each has evolved to keep up with one another. However, as we moved through 2003, that saw the introduction of Intel processors utilizing an 800MHz quad-pumped processor-side bus. Soon enough, AMD too joined in with their Athlon 64 processors using an 800MHz effective HyperTransport interface to the system chipset. Despite the increased throughput between the CPU and motherboard chipset, memory evolution was slow and was no faster than DDR400 then. One might say that the system is imbalanced, though this was the case ever since the system bus speeds were no longer coupled to CPU clock speeds as early as in the Intel 486 days. However now it's just gotten worse since memory speeds are not in step with the system too. Year 2004 saw CPU to system bus speeds ramp up to 1,066MHz for Intel CPUs and 1,000MHz for AMD, so the equation was in further imbalance. Of course that's also the year when DDR2 debuted, but with much higher latencies as compared to normal DDR, the new modules were no better to narrow the gap.
One of the critical reasons why Intel moved early to adopt DDR2 memory technology was because DDR2 memory could quickly scale up to reach very high frequencies without incurring too much signal integrity issues (as opposed to conventional DDR technology). While that didn't make much of an impact last year, this year saw memory vendors scaling DDR2 memory frequencies rather quickly. In fact within a span of a short six months, we've seen vendors offering DDR2-533 low latency modules then quickly moving up the ladder with DD2-667, DDR2-800 and by the time Computex Taipei 2005 commenced, DDR2-900 and at long last DDR2-1000 modules were unveiled, breaking the elusive three-figure barrier. Amazing as it sounds, DDR2 technology seems to be living up to its claims, which is not an easy accomplishment with all the marketing speak of various tech industries today. Looks like running a memory ratio of 1:1 is slowly turning back into a possibility even without overclocking.
Enter the DDR2-1000 matched pair memory from Corsair. With ultra low latency timings, this might well hold the DDR2-1000 speed title for a while.
If you thought you would have to run such high speed memory modules at very conservative latencies, Corsair will surely prove you wrong with their new TWIN2X1024-8000UL. Believe it or not, this 1GB (2 x 512MB) of matched pair DDR2-1000 modules are ultra low latency memory rated at CAS-5, 4-4-9 timings. If you need a yardstick of comparison, most DDR2-667 modules are rated at 4-4-4-12, while even Corsair's very own DDR2-800 has recommended operating parameters of 5-5-5-12. As such, Corsair's TWIN2X1024-8000UL is the world's first low latency DDR2-1000 matched pair of memory. As usual, www.hardwarezone.com® has got the latest products covered here and we give you a glimpse of what this memory pair is capable.