G.SKILL Trident Z 4000MHz DDR4 Memory Kit Review

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AIDA64 Extreme Edition 5.30 Beta

AIDA64 Extreme Edition 5.30 software (websiteis an excellent benchmarking tool for looking at memory performance on any desktop PC. This version of AIDA64 implements full support for the upcoming Intel Skylake processors, adds advanced support for Microsoft Windows 10 and Windows Server 2016 operating systems, and supports the latest graphics and GPGPU computing technologies by both AMD and nVIDIA. AIDA64 Extreme 5.30 software is free to try with limited features or $39.95 to buy with 1-year of free updates. 


Benchmark Results: On the ASUS Z170-Deluxe motherboard with the Intel Core i7-6700K processor overclocked to 4.6GHz we saw the memory bandwidth on the G.SKILL Trident Z memory kit was 53,791 MB/s read and 58,856 MB/s when averaged for three benchmark runs. This is a nice performance improvement over the lower clocked kits!


Benchmark Results: Similar performance gains were seen on the AIDA64 v5.30 copy test. We averaged 44,500 MB/s with a DDR4 clock frequency of 3466 MHz and ended up at 50,334 MB/s when we topped out at 4000 MHz. This is the first time that we have broken the 50,000 MB/s mark with a retail dual-channel DDR4 memory kit!


Benchmark Results: The latency of the memory decreased as the DDR4 DRAM clock speed increased despite having to loosen the timings in the UEFI along the way. At DDR4-4000 we averaged 39.5ns!

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  • Jay Jardin

    Do you have any proof that x99 motherboards can use 4000MHz ram 24/7? This would make my day. My conversations with g skill so far say no.

    • Lex –

      They can physically use the RAM, sure, not necessarily clock that high though. Anything above 2400 MHz on Intel was designed for the Z170, Z270 and now Z290 and Z299 on the way, utilizing the Intel i9.

      Intel Xeon’s memory shouldn’t be pushed beyond 2400 MHz, you’ll see some really weird shit happen, if you do. Although the i7 Extremes may be able to handle it depending on the revision of the Intel X99 you have and who made your motherboard.

      I know I can clock my late model Z170 Asus and ASRocks up to CAS 18 @ 4000 MHz for a 16 or 32 GiB kit, it’s quite stable too. I’m still waiting for some engineering boards to land on my doorstep to test the X299 with an i9 to see how they fare with the same said memory modules and timing.

      On another note;

      What CPUs are you using on the X99 series motherboards are you using? The max I’ve been able to push those boards is CAS 15 @ 3600 MHz with the i7 Extreme CPUs, 32 GiB RAM installed or CAS 17 @ 3600 with 64 GiB RAM installed with the i7 Extreme CPUs.

      The best board for the overclocking is this one;


      Unfortunately, it’s one expensive board! Although, if you do rendering and deep learning like I do, other than just gaming, this is the perfect board for it.

  • Riza Guntur Prakoso

    I never have my system stable for 4ghz RAM. The temperature soaring so high thus make system crashes randomly

    • Lex –

      Are you sure you’re using the correct setting in UEFI and using the correct voltage for said RAMs? They’re really picky running at that speed. Some chip sets from Intel can’t handle going at that speed. Talk with your manufacturer of your board and ask them about the 4 GHz clock and ask them for a stable CAS timing, sometimes the lock up is caused by that, too.

  • wargamer1969

    Happy with my new 16gb DDR4 3200 kit. Never had issues with Gskill and just upgraded from Gskill DDR3 1600 Ive had for 4 years now.

  • Ágoston Kubicsek

    i have 2×8 Gb 3200 mhz ddr4 but overclock 3600 mhz 😀

  • Saverio

    i would love to see igpu scalability

  • Darksword

    The actual real world performance difference from lower latency 3200 was almost nothing. Certainly not worth the price increase. I don’t know why people buy these.


      Yeah not for some 8gb kits that is for sure!! I remember buying my dual 32gb kits of 2400mhz DDR3 that I am still running today….. Shoot those were over $350usd each, but at least they were 32gb apiece and not some meazily 8gb kits for $400!

      I’ll stick with my 65gb’s @ 48-50gb/s quad channel DDR3 and hold out for some pascal with some (hopefully) NV-Link capable hardware in the near future.

    • Arnoud van Lieshout

      seriously people like you lack the intelligence, if you got top of the line specs with 144hz u need the fastest ram

  • Bassblaster505

    God damn 4.2gHz RAM

    • Nathan Kirsch

      Crazy right? DDR4 is scaling amazingly well! We just need the motherboards and CPUs to catch up in terms of being able to utilize all that bandwidth and of course run it with full stability.

    • Lex –

      Sure, 4.2 GHz RAM exists, the CAS timing is alright but the capacity just isn’t there. If your games needs a lot more memory than what’s present in the system, you’ll be going nowhere, fast.