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TweakTown's Ultimate Intel Skylake Overclocking Guide

By: Steven Bassiri | Guides | Posted: Dec 21, 2015 3:11 pm

G.Skill DDR4 3733MHz Cas 17 4GBx2 Kit

 

G.Skills kit is a high speed kit, but one at a more affordable price. At only $134.99 I would consider it almost mainstream, since speeds at and right above 3600MHz are attainable by most Z170 motherboards.

 

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I think that this G.Skill kit is based on Samsung's die as well, but I haven't confirmed it. I didn't push more than 1.4v when testing memory on this platform, but with this G.Skill kit I was able to tighten timings a bit even at 1.4v at 3733MHz. This kit also worked with all the motherboards in this guide without issue, and all I had to do was enable XMP.

 

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This G.Skill kit was able to do 4212MHz, which is a pretty good overclock considering the stock speeds of the kit. Most benchers find the optimal spot at around 3600-3900MHz with CAS latencies around 11-13, which is outside the purview of this guide since I am not going to push 1.9v through the kit - it's not the type of crazy example I want to set in this guide.

 

 

The Effect of Memory Timings

 

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Here I took a quick look at the effects of changing some important timing parameters and their impact on memory bandwidth and memory latency. Latency is not strictly equivalent to memory timings, and this article by Crucial explains the truth about memory latency. Overall, changing from command rate of 2 to command rate 1 has a minimal performance impact. Decreasing the tRFC and CAS latency has a more noticeable impact.

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