Intel NUC NUC5i5RYK Running HyperX Impact 1600MHz and 1866MHz Memory Review

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 1600MHz Versus 1866MHz DDR3L Memory in the Intel NUC

Intel NUC next to Pepsi can

Earlier this month when we published our review on the Intel NUC NUC5i5RYK ($398.47 shipped) we tested using a 1600MHz DDR3L 1.35V memory kit. We found the new Intel Core i5-5250U Broadwell-U processor was a very capable processor with a standard 1600MHz kit, but a number of readers were quick to ask about the performance gains that could be gained from using faster clocked memory. It turns out that right now there is no price difference between a Kingston HyperX Impact Black 8GB 1600MHz CL9 memory kit ($71.99 shipped) versus a Kingston HyperX Impact Black 8GB 1866MHz CL10 memory kit ($71.99 shipped). Since both DDR3L SODIMM kits are the same price we have a feeling that most people are going to want to go with the 1866MHz kit despite the slightly looser CL10 timings. If you wanted to go with a HyperX Impact Black 16GB kit of memory you can for $134.99 shipped for the 16GB 1600MHz CL9 kit or $140.74 shipped for the 16GB 1866MHz CL10 kit.

Kingston HyperX Impact 16GB DDR3L Kit

We were able to get our hands on the Kingston HyperX Impact Black Series 16GB (2x8GB) DDR3L 1866MHz CL10 204-pin SODIMM memory kit. The part number on this memory kit is HX318LS10IBK2/16. We’ll be using this memory kit the Intel NUC NUC5i5RYK to see how it performs versus the 8GB (2x4GB) 1600MHz CL9 memory kit we previously tested.

HyperX Impact Black Series 1866MHz

The HyperX Impact Black Series SODIMM kit has black PCB’s with black HyperX branding stickers on one side of the module. The other side of the module has the part number and a whole bunch of information that Kingston needs should the kit ever need to be replaced under the lifetime warranty. The Kingston HyperX Black Series 8GB/16GB 1866MHz memory kits comes with SPD settings to run at 1866MHz with 10-10-10-32 timings with a 1T command rate. The Kingston HyperX Black Series 8GB/16GB 1600MHz memory kits comes set with more aggressive to 9-9-9-27 timings and the same 1T command rate.

HX318LS10IBK2/16Kingston went with Micron DDR3L memory chips that were marked with FBGA Code D9QBJ. This part marking was decoded to being MT41K512M8RH-125:E, which means these 4Gb density chips come from Micron rated at 1600MHz with CL11 timings at 1.35V. After Kingston buys these memory IC’s from Micron they heavily screen and sort them at various speeds to get the kits they need to bring to market. The specific IC’s on this module passed Kingston’s in-house testing at 1866MHz with CL10 timings at 1.35V and Kingston backs all their memory modules with a lifetime warranty.

nuc5i5ryk built

Let’s see how the Intel NUC NUC5i5RYK performs with 1866MHz (PC3-14900) DDR3L dual-channel memory!

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  • Konstantin Reu

    Here is AIDA 64 results

  • Konstantin Reu

    Just finished O/C my NUC I5.
    NUC is stable at 2133 Mhz with timings 11-11-11-1T.

    DDR 3 Crucial Baliistics Sport 16GB (2*8GB)

  • Guest

    Has anyone manage to make the NUC work with DDR3L 2133MHz memories? Is intel going to fix this via BIOS update?

  • Devin Young

    I was wondering how you set the GPU to 1050MHz? Mine seems locked at 950, I’m sure I’m missing something silly but I was super curious. Also, are there any other optimizations you think could be made in Bios settings to boost GPU performance?
    (Using Hyper 1866 16GB kit)

    • ASM

      You can set the graphics multiplier in the BIOS to 21 (1050 MHz) but it doesn’t seem to do anything — at least when observing the IGP speed with PowerTop. The latest GPU-Z doesn’t properly report IGP clock speeds so I’ve only look at PowerTop results.
      It’s encouraging that the graphics multiplier is in the BIOS though.
      FWIW, I’ve also set the IGP aperture to 1GB. Any higher and non-UEFI Win7 boot seems to become unhappy.

  • ASM

    FYI, I just bought a NUC5i5RYH and a HyperX Impact 2133 16GB kit (HX321LS11IB2K2/16) and it won’t boot on the NUC. I’ve even tried the CW delay tip at the end of your article.

    Reducing the speed to 1866 seems to work though.

    Unless I can get it to work at 2133 I’m going to try to return the RAM. 🙁

    • helpfulAnon

      According to the spec, it only works for 1333/1600/1866:

      • ASM

        There are G.Skill modules that support 2133 on the NUC5i5RY:

        It’s unclear if we’re supposed to interpret this table as meaning that speed can only be reached with one module installed.

        • ASM

          Two Intel-validated G.Skill 8GB 2133 modules (F3-2133C11S-8GRSL) also don’t work.

          Just got a pair today and popped them in.

          The 2133 MHz modules are on the Intel “tested” memory list so I’m surprised and frustrated over burning $$$.

          The takeaway might be that 2133 _does not work_ — at least with this BIOS rev.

          It would be cool if LegitReviews could dig into this.

        • Nathan Kirsch

          I have asked Intel for calarification. The list I was personally given does not list any support for 1866 MHz or 2133 MHz DDR3L memory kits.

        • ASM

          Thanks Nathan. It would be great to find out more since the HD 6000 IGP can always benefit from more bandwidth.

          Hopefully the memory list on the Intel site isn’t a typo.

          BTW, I’m currently running at 10-10-10-31/1866 with the G.Skill and no problems. The Kingstons ran fine at 1866 as well. I just wish I could get to 2133. 🙂

        • Nathan Kirsch

          Intel informed me that the web page that you guys are sourcing is very inaccurate. It appears there is a communication issue between engineering and the web development team. The image I posted above might not be the latest list, but it’s accurate. No 1866MHz or 2133MHz kits have been approved and placed on the supported memory list as of 02/27/2015. Intel did say that they are working on BIOS/UEFI optimizations for better memory support in the future. I have gotten G.Skill and Kingston 1866MHz kits to work just fine with this system. I’ll be trying a G.Skill F3-2133C11D-8GRSL 2133MHz DDR3L memory kit later today if time allows.

        • ASM

          Awesome! I’ll be interested to see if you devise any proper 2133 settings.

          FYI, in case you don’t know this one already, you can quickly revert to safe memory settings by powering off the NUC, then pressing and holding the power button for exactly 3 beeps and releasing. The power button should quickly flash amber if you get the timing right. You’ll then be in a pre-BIOS screen and running at 1600 MHz. Just press F2 and you’re in the Visual BIOS. Plugging in a pair of earbuds into the front audio jack and leaving them on the table is more than loud enough to hear the dreaded POST beeps. It beats dorking with the internal jumper.

        • Nathan Kirsch

          I was able to get 2133MHz to work on the bottom slot, but I was unable to get it to work with a module in the top slot by itself or in dual-channel mode. One 2133MHz module in the top slot and it would post and get to the desktop, but the system would crash. It basically got stuck in a crash loop. Attached is the single-channel result from 2133MHz in the bottom slot with the command rate manually set to 1T. This is an 8GB module from the G.Skill F3-2133C11D-16GRSL 2133MHz DDR3L memory kit. I can’t find the 8GB kit right now, so I tested with the 16GB kit.

        • ASM

          Ah well, I had the same result w/the Kingston and G.Skill memory and could boot with one module. I didn’t try booting to Windows.
          Thanks for confirming!

        • ASM

          The Intel tested memory list was just updated and the 2133 modules have been removed:

        • Nuno G.

          Nice to see that there is a lot of 1866 modules… but the question is… they can be just placed on the NUC and boot, or do we have to tweak bios for them to run??