Articles: Memory

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For our tests of DDR2-800 memory modules GeIL Company offered us one of their top products – a 2GB memory kit named GeIL GX22GB6400UDC. The color of the heat-spreaders covering the memory chips indicates that this memory belongs to high-speed enthusiasts’ line-up. While the mainstream GeIL memory solutions come equipped with non-colored aluminum heat-spreaders, the elite products targeted for hardware enthusiasts stand out thanks to bright red color.

GX22GB6400UDC memory modules belong to this particular “red” series. Like all other similar solutions, they are intended to work at 800MHz with 4-4-4-12 timing settings. As for the Vdimm, GeIL declares pretty wide supported range: from 1.8 to 2.3V.

Looks like color of the heat-spreaders is the only distinctive exterior difference between this solution and the other GeIL products. The heat-spreaders are of standard design with embossed logo and a marking sticker that contains the product part number, working frequency and timings.

I believe that GeIL GX22GB6400UDC memory modules are a very unusual solution, and not only because of the fact that the manufacturer provided no recommendations regarding the DIMM voltage. It is even more strange that the chips used for these memory modules are unmarked, so we cannot actually define their origin. However, the benchmark results indicate very clearly that these are not Micron chips.

Even the SPD report looks a little strange:

The modules name written in the SPD is not connected with their part number in any way, and suggests very clearly that their memory timings should be not 4-4-4-12 but 5-5-5-15. I have no idea where this is coming from. As far as the rest of the SPD data is concerned, it is optimized to ensure compatibility with most mainboards out there.

The practical performance of GeIL GX22GB6400UDC memory modules wasn’t too impressive although we ran all tests at 2.1V Vdimm.

However, I have to admit that GeIL GX22GB6400UDC managed to hit pretty much the same frequencies as the competitors at its default timings of 4-4-4-12. Although, these memory modules are not universal. Further increase of the latencies and (or) Vdimm didn’t result in any increase of the modules’ overclocking potential.

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