Conclusion of the Kingston HyperX KHX1100D3LLK2/2G DDR3-1066 (2x1GB) Review
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Bluetooth 2 Jun 2007

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With the lowered RAM timings to CAS 5, 7-7-24, which is what we usually get from DDR2-1066 memory.
 We find that the results atually improved.

Here is a breakdown of the scores (tabulated).

Firstly, we run the board with a E6300 at 333MHz FSB. That overclocks the CPU and the RAM. The RAM module, using a ASync 4x multiplier now runs at the speed of DDR3-1333. We can see that the RAM actually auto sets itself to run at CAS 8 at a freq of 600 (1200MHz) as shown in CPU-Z.

We tried to increase it to 333 (1333MHz) but the system couldn't POST. This seems to be the case since SPD already mentinoed that the supported Max freq is 609MHz. Anything beyond that might be unstable. That is why no matter how relax we set the CAS to 9 or 10, the system just couldn't POST.

The tests were all done with VDIMM at 1.7v with CPU vcore bumped up by +0.1v from within the BIOS.

Conclusion

The Kingston HyperX KHX1100D3LLK2/2G DDR3-1066 (2x1GB) has performed as specified according to its SPD timings. Although it worked well at DDR3-1066, it couldn't get across the DDR3-1333 mark even with the most relaxed timings. Perhaps that is the reason why this module is rated as DDR3-1066.

As I have mentioned before, current Intel systems uses async 4x multiplier (266x4)to reach 1066MHz. In fact, if you were to run the memory in SYNC mode (be it DDR2 or DDR3), you can get the best bandwidth out of the modules.

Nevertheless, the modules are here to stay. DDR3 uses lower voltage as compared to the DDR2 counterparts and it offers the possibility to run at higher clock with a 4x multiplier.

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