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G.Skill Trident Z DDR4-3600 16GB Low Latency Kit Review


Overclocking Results

For our memory overclocking tests we are usually interested in two main elements: how well the memory scales with additional voltage and how versatile it is at overclocking with different timings. Though we suspect that many of the overclockers who buy this kit won’t hesitate to use 1.45V or even 1.50V, we are sticking with 1.40V to stay inline with all our previous DDR4 reviews. This allows us to compare kits on a roughly equal footing, and allows us to put all our efforts on testing timings scalability instead.

In order to make sure that there weren’t any possible CPU-related bottlenecks, the CPU VCCIO was set to 1.275V and the CPU System Agent Voltage set to 1.35V. Since our ASUS Maximus VIII Extreme does not handle memory speeds above DDR4-3733 very well when using 8GB modules, we decided to focus on tightening the timings instead of just attempting to hit the highest possible frequency. We focused on four basic timing configurations (14-15-15 / 15-16-16 / 16-17-17 / 17-18-18) with a 1T command rate in order to maximize performance.

With the pleasantries out of the way, let’s get to the fun stuff.

As mentioned above, we knew that we had a frequency ceiling of about DDR4-3733 with this motherboard, since it isn’t great at oveclocking large 8GB modules…which is an issue with many other motherboards. Therefore, since we knew what the upper limit was we switched our focus to progressively tightening the timings in order to find the maximum frequencies at the lower latency levels. That is when this kit really impressed us. The CAS 14 and 15 results are actually better than what we achieved with the smaller Corsair Vengeance DDR4-4000 kit, and with tighter secondary timings too.

If this memory kit had not been bottlenecked by our motherboard, we are very confident that it would have been able to hit at least DDR4-4000 with the same 19-23-23 timings as the Corsair kit, if not even tighter timings. We can make this assertion because G.Skill actually has a 16GB DDR4-4000 memory kit for sale – the F4-4000C19D-16GTZ – that isn’t even found on their website but is currently available at Newegg. Simply put, these new Samsung B-die ICs are simply better than their E-die predecessors in every way.

Click on image to enlarge

These screenshots are just to prove that we did indeed achieve the overclocks listed, and that they were stable enough to pass a series of mainstream benchmarking and stress testing applications. If you are doing super critical work, then maybe a little Prime95 stress testing should be done as well, but for gaming and day-to-day tasks our approach is more than sufficient.

Check out the next few pages to see our benchmarking results. We kept CPU frequencies as close to 4.40Ghz as possible and increased the Cache/Uncore frequencies to around 4.10Ghz to try an eliminate any memory bandwidth bottlenecks. We were able to keep all four configurations within these guidelines, with only a 10Mhz variation in CPU frequency.

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