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Reviewed by: Carl Nelson [02.11.07]
Manufactured by: Kingston



With our OCZ review, we learned that AMD had to cut some corners when it came to memory dividers, causing memory to sometimes run significantly slower than it should.

For instance, a standard 200 MHz HTT clock with a 12x multiplier will yield a proper speed of DDR 800 (CPU speed / 6). A CPU with a 10x multiplier will yield the same (CPU speed / 5). However, set the multiplier to 11x, and you will have problems.

The memory divider is set to the amount that will allow the ram to run closest to its setting, but not over. In the case of 11x, it will be CPU / 6. So if you have an Athlon64 X2 4200+ or 4400+, your CPU is running at 2.2 GHz, and your "DDR2 800" memory is running at 366 MHz, or "DDR2 733".

Long story short, we only used the CPU's standard 12x multiplier, and 10x.

4-4-4-12 Overclocking

To test this memory's capability ats its lowest latencies, we installed it in a Foxconn C51XEM2AA-8EKRS2H-WTF (NFORCE 590-SLI) with a retail AMD Athlon64 X2 4600+ with retail cooler. The CPU runs at 2.4 GHz (200 HTT x 12). I bumped the DDR2 voltage to 2.2v and the CPU to 1.6v to get things going.

Leaving the multiplier at 12x, we managed to clock the HyperX up to 227 MHz (that's 908 MHz DDR). At this point, the CPU is running at 2724 MHz. Quite the leap from 2.4 GHz!

This is a pretty good overclock, but the voltage had to be bumped up again to 2.3v, which is technically outside Kingston's warranted rate. And to compare to the OCZ Special Edition we tested with this exact same test bench, that kit made it to DDR 940, with the CPU running at 2.82 GHz, which is the highest we've been able to take this particular CPU with stock cooling. Still, we can't put significant weight into these results, since it is overclocking and results will vary. Both OCZ and Kingston only guarantee up to DDR2 800 at these latencies and stated voltages.

5-5-5-15 Overclocking

Sometimes low latency takes a back seat when an overclocker wants to push the FSB as high as it will go. Keep in mind that this ram is intended to run at the lowest latencies possible. If high FSB means a lot, you can get memory modules that are designed to do so. These will come clocked with high timings like we're testing here, but will be guaranteed to run at ridiculously high clock speeds. An example is Kingston's own PC2 9600, guaranteed to run at DDR2 1200 with timings of 5-5-5-15. It's still interesting to see how this ram will do however...

After an evening of tweaking and messing around with settings, we were fnially able to clock this pair of modules to 245 MHz (DDR2 980). This is with the CPU running at 2.45 GHz (so barely above stock) on a 10x multiplier.

Again to compare, the OCZ Special Edition made it to DDR2 1040 with these same settings (the CPU was running at 2.6 GHz). Once again though, mileage will vary. Chances are that the OCZ you buy may not make it to DDR2 980, and maybe the set of Kingston does 1040 MHz. There is really no telling.

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