3800x low multi-core speed - cpuZU
3800x low multi-core speed - cpuZU
Hello everyone, I have a query about cpuz and low multi-core ratings. My stock Ryzen 3800X is struggling to achieve a solid multi-core score on cpuz, dropping over 100 points compared to benchmarks. On stock tests my multi-core is 5389, while single is 522—considered decent for this model. All background tasks are paused and the CPU idles at just 4% usage. I’m running Windows Ryzen High Performance Plan, with 3200MHz Infinity Fabric RAM at 1600 MHz and timings 16/17/17/17/34. When I try multicore overclock at 4.2 @ 1.36V, multi-core performance jumps but single-core drops to 480 while multi-core reaches around 5500. After that, scores fall to 480/5100. I’ve adjusted BIOS settings, changed voltages, tweaked timings, even tried the Corsair Vengeance Micron DDR4 after 4.2, but performance plummets. Temperatures stay between 68-72°C during gaming and reach 90°C in cpuz stress tests for half an hour. Is there a solution or should I stick with the single-core results?
CPU Z isn't working well. Try cinebench and Ryzen Master for testing.
So first off, pushing your 3800x at 1.36V is likely to harm the silicone and the chip itself. Before diving into manual overclocks, check the safe voltage limit for your specific component. Secondly, using R20 for benchmarking would give you more accurate results. Also, with Ryzen processors, it's usually better to stick to the maximum settings rather than trying to overclock manually—it’s already capped, and manual tweaks might actually hurt performance. If you want a comparison, I tried overclocking myself and was curious if my chip could hit 4.5Ghz, but I didn’t bother because it doesn’t seem worth it with Ryzen. Also, what cooler are you using? Honestly, running at 4.35Ghz gave me better temperatures than my original chip. Still, cranking it up to 1.36V will likely overheat and damage it.
Based on what I've gathered from Jays 2 cents, the starting voltage was around 1.35v. I thought to begin near that level. The stock voltages listed in Ryzen Master were typically between 1.48v and 1.34-1.36v under load. I own a Corsair H60i with two Corsair LL120 units in a push-pull configuration. My Cinebench R20 multi-core test showed scores of 4626 and 4721 at 4.25 hours.
Just completed cinebench after resetting the CMOS with 3000MHz XMP settings. Result: 4611... 84C CPU runs at 4074MHz across all cores. Detailed stats available here: https://valid.x86.fr/2tbk6f
I wouldn't necessarily follow Jays' advice. It's well known that voltages above 1.325V can harm Ryzen CPUs, and some users even went lower. When working with overclocked components, I personally kept my chip under 1.2875V and managed a stable 4.35Ghz OC with a R20 score of 5102 and a max temperature of 68°C. Which video is the Jays you're watching? What CPU were they testing? Running over 1.35V is quite extreme for Ryzen's starting voltage, but I was able to hit 4.2Ghz all cores on my 3800x using 1.2V and peak in the 70s during gaming on a 240mm AIO. Your voltages seem high because you're not running heavy tasks. Ryzen tends to boost its voltage slightly (around 1.4-1.5V) during light work to maximize performance, but only briefly across limited cores. If you keep these levels up, your CPU will likely suffer damage and degrade over time. There are many discussions online, and each chip behaves differently, so it's best to experiment yourself unless you're comfortable risking a $500 investment. This is my experience from a few hours ago before I switched back to stock settings. Cinebench R20 Temp STOCK 4886 73 3.9Ghz / 1.2V 4568 56 4.0Ghz / 1.2V 4662 58 4.1Ghz / 1.2V 4815 59 4.2Ghz / 1.2V 4893 59 4.3Ghz / 1.275V 5046 66 4.35Ghz / 1.2875V 5102 68