HyperX HX321LS11IB2K2/8 Review

HX321LS11IBK2-8_00 Over the last decade, the IT industry has made substantial progress in terms of compactness and mobility. These changes have also affected the field of computer hardware, where high-performance notebooks, all-in-one and mini-ITX systems became a norm. Naturally, these changes gave rise to a number of product classes that would previously be considered irrational.

Take SODIMM memory as an example. Up until recently, its only area of use were laptops. But now, thanks to its small form factor, this type of memory is finding its way in new applications where performance is no longer a factor of tertiary interest.

Responding to this new demand, Kingston's HyperX division has launched a brand new SODIMM memory lineup, which they named Impact after a popular series of high-end ITX motherboards by ASUS ROG. In its current shape, the Impact lineup consists of 4GB and 8GB modules (and their pairs) with specs ranging from DDR3-1600 CL9 up to DDR3-2133 CL11.

HyperX Impact
Part Number
8GB (2 x 4GB)
1066 MHz (DDR3-2133)
1.35V or 1.5V
Lifetime warranty
(Limited to 10 years in Austria and Germany)

The subject of our today's testing is a pair of DDR3-2133 CL11 versions, each of which comes as a dual-channel 8GB kit. The only technical difference between the two are the rated timings, which have been loosened from 11-11-11 to 11-12-13 for the newer HX321LS11IB2K2/8 model.

HX321LS11IBK2-8_02 HX321LS11IB2K2-8_02

The Impact modules are served in a transparent plastic tray that does not contain any additional accessories.

HX321LS11IBK2-8_01 HX321LS11IB2K2-8_01

Even though SODIMM modules are intended to fit in tight spaces where they can hardly be seen, Kingston have still taken care about the appearance and used black PCB instead of the standard green.

HX321LS11IBK2-8_05 HX321LS11IB2K2-8_05

Because of compactness being the top priority, the modules are not equipped with any heatsinks. This simplifies the job of chip detection to peeling off any of the stickers.

HX321LS11IBK2-8_11 HX321LS11IB2K2-8_11

Some of the markings on the pictures above are not very clear but the seasoned memory experts inside us have immediately identified the chips to be Hynix H5TC4G83MFR for the HX321LS11IBK2/8 model and H5TC4G83BFR for the HX321LS11IB2K2/8 model. In both cases, the chips in use are of 4Gbit (or 512MB) capacity, hence it takes eight memory chips to build each 4GB module.

The same chip models are also employed by Kingston and some of their competitors for the full-sized DIMM modules, so we are looking forward to seeing what the overclocking difference between similar DIMM and SODIMM modules is going to be.

HX321LS11IBK2-8_SPD HX321LS11IB2K2-8_SPD

HX321LS11IBK2-8_Thaiphoon HX321LS11IB2K2-8_Thaiphoon

Each of the memory modules is flashed with an SPD, which contains information on its manufacturer, model, production date and internal serial number. The SPD also features several JEDEC setting presets that are primarily intended for backwards compatibility.

The detailed settings that either of the kits is defaulted to upon insertion can be observed below.

HX321LS11IBK2-8_spec HX321LS11IB2K2-8_spec

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  1. Am I right in presuming the previous mode HX321LS11IBK2/8 had higher performance than the HX321LS11IB2K2/8 model? I was considering getting these chips, however I might as well go with say G.Skill because they achieve tighter timings at the same voltage as the older model here does, though no longer available.

    1. Yes, the older model with better timings is faster. Which one from G.Skill are you talking about? The F3-2133C11D-8GRSL?

      1. Yes that was. I am actually wanting to get a 16GB kit which is this one F3-2133C11D-16GRSL or this one HX321LS11IB2K2/16. I’ve read that however that even the older PnP CL12 out performs current G.Skill and vengeance memory from this forum.

        In the forum, the G.Skill was an 8GB dual channel kit, as opposed to the 8GB kit PnP CL12.

        Are you aware of any comparing reviews of F3-2133C11D-16GRSL vs HX321LS11IB2K2/16 and/or HX321LS11IBK2/16?

        For some reason the older and no longer made impact model goes for twice as much as the newer Kingston model. I want to say the Hynix dies are superior to the Samsung dies for 2133, but I am not sure.

        1. No idea to be honest. Maybe it has to do with secondary and tertiary timings. I can ask the F3-2133C11D-16GRSL and HX321LS11IB2K2/16 for review (and performance testing) but unfortunately I wont be able to get a sample of the HX321LS11IBK2/16 (EOL).

          1. That would be a nice review. I haven’t seen any comparative of the two. Do you perhaps have the 2x4GB kit of the G.Skill Ripjaws (F3-2133C11D-8GRSL)? That versus the HX321LS11IB2K2/8 would determine who is superior at a 16GB kit.

  2. Cpuz-z ignores Fine_tCK correction. For this reason the timing table of each from the modules is absolutely wrong!

    1. I got two HX321LS11IBK2/8 Kits and use them for my P570WM. Unfortunately the use is restricted to 1867Mhz CL10. Everytime I change the settings it reverts back to 1867Mhz CL10.
      I know that Ivy-E’s memory types is restricted to 1867Mhz. On the other Hand there are many P570WM owners who run their Kingston’s at 2133 and even 2400Mhz.

      My question is from what it is dependent to get a stable 24/7 on stock and overclocked?

      Clevo P570WM // GTX 970m SLI // i7 4960X // 16GB (4×4)RAM (HX321LS11IB2K2/8) // Intel 330 180GB SSD + 2 x SanDisk Ultra II 480GB SSD (RAID 0) // 120Hz Matte Screen // 2 x 330w PSU // Win 10 Pro