![]() ![]() ![]() However, increasing speeds into the realms of 38MHz sees little if any improvement in performance with 4000MHz CL18 close but slightly behind 3600MHz and 3800MHz. In Zen 2 we saw a strong positive trend with RAM speed from 2133MHz to 3733MHz, and we observe the same here on Zen 3: Slower RAM is a serious detriment to performance, with 3600MHz yielding much higher results. It’s those scores we’re concentrating on here. TImespy is a Dx12 based benchmark with a portion dedicated to CPU performance in isolation. Cinebench R20 appears almost oblivious to the RAM speed of the System with even 2133MHz not causing a significant performance deficit. Note that the scale starts at 5000 Points: The difference between these results is small enough not to cause concern, and it’s not possible to consider this a ‘trend’ in performance owing to the marginally lower scores at higher speeds. Honing in on the benchmarks that matter we again showed that Cinebench is not a reliable indicator of performance linked to RAM: Our scores varied little with RAM speed. Zen 3 RAM Synthetic Test results: CineBench R20 and Timespy From there we established representative RAM profiles across a spectrum of speeds to emulate widely available RAM kits. We were able to tighten timings down to CL 16-16-16-34 at 4000MHz. Using our Patriot Viper 4400Mhz memory kit, which comprises Samsung B-Die Ram with CL19 timings, we were quickly able to establish that our Ryzen 5800X was stable at 4000MHz with Infinity Fabric (Fclck) at 2000MHz. Overclocking on the Zen 3 platform proved relatively straight forward. Finally, can we use this information to make any recommendations about the best RAM for your Zen 3 system?.Secondly, does Zen 3 performance scale with RAM speed in the same way we’ve become accustomed to?.Firstly, does Zen 3 improve our ability to lift Infinity Fabric speeds to match faster RAM?. ![]()
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