Articles: Memory

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G.Skill F3-12800CL8T-6GBPI (PI Black)

G.Skill memory kits have always been a stable middle runner among alternative solutions from other manufacturers. This time is also no exception. G.Skill F3-12800CL8T-6GBPI memory kit supports 8-8-8-21 timings that can be achieved at an even lower voltage of 1.6 V.

However, in this case we have to say a few words about the modules cooling solution. The thing is that aluminum heat-spreaders installed on these memory modules are too tall: G.Skill modules are among the tallest solutions of our today’s testing participants. Therefore, if you are using powerful CPU coolers with heatpipes, you may be up for a serious challenge. And frankly speaking, this compatibility conflict may not be so easy to resolve, because the heat-spreaders on G.Skill modules are solid and glued dead with thermal glue and hence cannot be taken apart like the ones used by Corsair.

I would like to specifically point out that we got our hands on a pre-production kit with silver heat-spreaders. At this time they are offering the same memory modules under PI Black brand name and they come with black heat-spreaders of similar design.

The module developers didn’t leave out the XMP technology. The corresponding profile contains all necessary settings saving the user time and trouble adjusting routinely all the appropriate timings and other parameters.

Kingmax FLGE85F-B8MF7

Kingmax Company doesn’t offer a wide variety of overclocker memory modules like other manufacturers. DDR3-1600 SDRAM is the fastest solution they have in their product lineup at this time. The interesting thing is that Kingmax memory is totally unique and has no analogues. In fact, this manufacturer is the only one who was brave enough to offer memory modules for Core i7 processors with the default voltage exceeding the recommended 1.65 V. In other words, the specifications of Kingmax FLGE85F-B8MF7 contradict Intel’s official recommendations, which, in fact, is a bit of a concern to us.

So, they claim that their memory modules work with 7-7-7-20 timings at 1.7-1.9 V voltage. However, at a safer voltage of 1.65 V these modules won’t work with these aggressive timings. Therefore, if you trust Intel more than Kingmax, then you should keep in mind that you will be configuring this memory for work with timings around 8-7-7-24: at least these were the settings that we could sue during our today’s test session at 1.65 V voltage.

The cooling system employed by Kingmax is also designed just as good. The modules are covered with massive aluminum heat-spreaders that are taller than normal. We are always very careful when it comes to memory modules of non-standard size, because they often don’t fit into the DIMM slots hitting against the processor cooler above them. However, in this case they may have good reasons for use of a higher-performance cooling solution, because these modules are designed for work at higher voltages.

Kingmax did create XMP profiles for their memory modules. They contain two profiles for 1.8 V and 1.9 V voltage modes. I would like to point out that you have to increase the Uncore voltage to 1.3-1.4 V to ensure more or less safe mode for the Core i7 memory controller with these settings. It is important to keep in mind at all times, so we wouldn’t recommend using Kingmax memory in a fully automatic mode. However, those risky guys who are not afraid to burn down the CPU memory controller should be pretty pleased with the second profile: it allows to lower the timings to 7-6-6- with minimal efforts.

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