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Kingston 2GB PC2-6400 CL3
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by Rob Williams on August 22, 2007 in Memory

DDR3 might be lurking out there, but DDR2 is still the most popular option for most people, and for good reason. It’s fast, and currently, very inexpensive. Although there are many PC2-6400 kits available, Kingston puts a twist on their’s by offering it with tight 3-3-3 timings.

Overclocking, Testing Methodology, Sandra


Nowadays, it’s not uncommon to pick up a decent kit of DDR2 that won’t hit 600MHz, and this one was no exception. After all said and done, I had it running completely stable at 610MHz, with 2.50v. If you plan to replicate this setting, I highly recommend using a fan to keep your modules cool, as 2.4v+ is getting into dangerous territory.

Stock timings is 3-3-3-8, but move to 4-4-4 and you can drop a whopping 0.55v. While retaining those 4-4-4 settings, moving all the way up to 500MHz was possible, but with 2.20v. That’s still less than stock voltage however, so we will see in our graphs if that’s a better setting to use. Even 550MHz with 4-4-4 timings was possible, but it was using 2.60v, which I don’t recommend to anyone unless they have real good cooling.

  • 400MHz 3-3-3-8 2.35v (2.40GHz CPU)
  • 400MHz 4-4-4-8 1.80v
  • 450MHz 4-4-4-8 2.10v (2.475GHz CPU)
  • 500MHz 4-4-4-12 2.20v
  • 500MHz 5-5-5-12 2.00v (2.40GHz CPU)
  • 550MHz 4-4-4-12 2.60v
  • 550MHz 5-5-5-15 2.20v
  • 600MHz 5-5-5-15 2.50v
  • 610MHz 5-5-5-15 2.50v (2.44GHz CPU)

Overall, I am pleased with the overclocking potential seen here. It didn’t blow me away, but this isn’t a high-performance kit, such as say, a PC2-9200. 600MHz proved stable, which is always the goal I try to hit with any kit that rolls into our labs.

Testing Methodology

Regardless of what performance-related part we are reviewing, there are a few conditions that we meet prior to benchmarking:

  • Clean OS installation (Only required applications/games/benchmarks are installed)
  • Desktop and scrap files are cleaned up, including emptying of recycle bin/trash.
  • No virus scanner or firewall is installed in our stand-alone installations.
  • Internet is disabled prior to any testing.
  • Computer has proper airflow and room temperature is 80°F or less.

Below is all of the information regarding our testing machine. Links lead to our review of said product.

Sandra XI

Sandra is always the first benchmark to come to mind when we need to do memory benchmarking. Or CPU benchmarking. Or storage benchmarking. You get the idea. It’s a superb all-around tool that we rely on quite often.

Stock settings were nice, but shooting up the CPU another 75MHz and increasing the frequency to DDR2-900 (while loosening the timings a bit) gave us quite a nice gain. Moving to 5-5-5 hurt though, except at 610MHz, not surprisingly.


Page List:
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1. Introduction
2. Overclocking, Testing Methodology, Sandra
3. Everest, Super Pi, Sciencemark
4. RAM Comparisons, Final Thoughts