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  • CPU capability list - Maximum DRAM Frequency

    When building a system with a specific target in mind, special hardware may be necessary to achieve that goal. By having an idea of what your CPU is capable of, you can build the system around that. Here is a list of each CPU's typical capability. Depending on your luck and OC ability, your CPU may be capable of higher, but this list is for guaranteed results. With a compatible motherboard using the G.Skill QVL List, you can expect high performance results with the proper combination of hardware.

    Please feel free to post your own personal results especially when using non-K series CPUs; non-K series CPUs are not designed for overclocking, so we usually do not work with those particular models and will have limited data.


    Processor              DRAM Frequency capability

    These ratings are for 1 DIMM per Channel.

    ie. if using full slots, DRAM Frequency may need to be lowered; with certain motherboards, you can increase CPU memory controller Voltage to force the system to support more modules or a higher DRAM Frequency.

    Intel Core i7-7980XE    DDR4-4200
    Intel Core i7-7960X    DDR4-4000
    Intel Core i7-7940X    DDR4-4000
    Intel Core i7-7920X    DDR4-4000
    Intel Core i7-7900X    DDR4-4000
    Intel Core i7-7820X    DDR4-4000
    Intel Core i7-7800X    DDR4-4000
    Intel Core i7-7740X    DDR4-3600
    Intel Core i5-7640X    DDR4-3600

    Intel Core i7-6950X    DDR4-3000
    Intel Core i7-6900K    DDR4-3000
    Intel Core i7-6850K    DDR4-3000
    Intel Core i7-6800K    DDR4-3000

    Intel Core i7-5960X    DDR4-3000
    Intel Core i7-5930K    DDR4-2800
    Intel Core i7-5820K    DDR4-2800

    Intel Core i7-4960X    DDR3-2400
    Intel Core i7-4930K    DDR3-2133
    Intel Core i7-4820K    DDR3-2133

    Intel Core i7-3970X    DDR3-2400
    Intel Core i7-3960X    DDR3-2133
    Intel Core i7-3930K    DDR3-2133
    Intel Core i7-3820      DDR3-1866

    ---

    Intel Core i7-8086K    DDR4-4000
    Intel Core i7-8700K    DDR4-4000
    Intel Core i5-8600K    DDR4-3600
    Intel Core i7-7700K    DDR4-3200
    Intel Core i5-7600K    DDR4-3200

    DDR4 frequency range       Required CPU VCCIO Voltage range Required CPU System Agent Voltage range
    DDR4-2133 ~ DDR4-2800      1.05V ~ 1.15V        1.05V ~ 1.15V
    DDR4-2800 ~ DDR4-3600      1.10V ~ 1.25V         1.10V ~ 1.30V
    DDR4-3600 ~ DDR4-4266      1.15V ~ 1.30V         1.20V ~ 1.35V
    ---

    Intel Core i7-6700K    DDR4-3000
    Intel Core i5-6600K    DDR4-3000

    Intel Core i7-4790K    DDR3-2400
    Intel Core i5-4690K    DDR3-2400

    Intel Core i7-4770K    DDR3-2400
    Intel Core i5-4670K    DDR3-2400

    Intel Core i7-3770K    DDR3-2400
    Intel Core i5-3570K    DDR3-2133

    Intel Core i7-2700K    DDR3-2133
    Intel Core i7-2600K    DDR3-2133
    Intel Core i5-2500K    DDR3-2133

    Intel Pentium G3258    DDR3-2400
    Last edited by GSKILL TECH; 12-05-2018, 02:13 PM.

  • #2
    3570K: Tested four of those, all could do DDR3-2400 and two had no issues with DDR3-2666 either, on ASUS ROG Maximus V Extreme (Z77).

    3770K: My 3770K has no issues with DDR3-2800, on Gigabyte Z77X-UP5 TH.

    4770K/4790K: Never had one that failed to reach DDR3-2800 on a decent MB, Gigabyte Z87X-OC / Z97X-SOC Force in my case. From quick tests with single sided MFR my current 4790K maxed out around DDR3-3400, but it might also have been the weak-sauce retail memory =)

    G3258: Hit DDR3-2800 with Samsung and Hynix based TridentX on Gigabyte Z97X-SOC Force (did not test higher).

    6700K: Did max out any memory i threw at it so no final judgement yet, but DDR4-3733 seems pretty safe on ASUS ROG Maximus VIII Gene (Z170). If you are using iGFX you might need to keep it lower depending on VCCSA/VCCIO needed, because of black-out issues with the onboard HDMI when those voltages hit certain thresholds.
    >> The official G.SKILL Memory Frequently Asked Questions (F.A.Q.)! << | [pictures] Show off your G.SKILL products!

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    • #3
      For the i7-7700K you list 3200.

      I think I am doing better - I have Gigabyte Aorus Gaming 7 mobo with an i7-7700K clocked to 5GHz.


      I have installed the 3866 Trident Z RGB and with Gigabyte bios vF3 XMP profile enabled. The system boots windows 10 and runs rock solid stable. (Gigabyte have this memory on their list )

      CPU-Z software reports the memory frequency 2*1864 = 3728MHz

      Regards,
      Sono
      Last edited by sono; 03-26-2017, 09:09 PM.

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      • #4
        Thanks for the info. Good to hear! The maximum results vary with each CPU; the list is a guideline of what you can expect to work with any CPU of that model.

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