MR Dream PC Build | Best Gaming PC 2021 | 4K Best Video Editing and Content Creation PC
AMD Ryzen™ 9 3900X
The AMD Ryzen 9 3900X is (at least for now) the flagship CPU from the new range from AMD. With its huge 12-cores and 24-threads, it has ‘productivity king’ written all over it. So let’s look at building a productivity powerhouse system with it!
More threads than you know what to do with?
So, this CPU initially seems a little overkill. With a huge 12-cores and 24-threads, you could be wondering what you’re going to use them all for. If that’s the case, though (perhaps because you’re a pure gaming-focused builder), then the R9 3900X may not be for you. This is for the content creators, the streamers, the editors of the world — who need not only great single-core performance, but also great multi-core performance.
In their press information, AMD have laid it out well: you can use 8-cores/16-threads for a game, while still having another 4-cores/8-threads for streaming and recording, all without performance drop off. Or what about someone like me, who’s editing multi-cam 4K footage and wants butter-smooth playback and super fast render times?
Bottom line: this is a big CPU for some very serious, demanding scenarios. Now let’s dive into the specifications before looking at the build.
Cores / Threads: 12/24
Base Clock: 3.8GHz
Boost Clock: 4.6GHz
L2 Cache: 6MB
L3 Cache: 64MB
Recommended RAM: Dual-Channel DDR4 3200MHz
TDP: 105W (when boosted)
A clue to this CPU’s insane performance comes in that huge L3 cache. The idea being that, with all those cores/threads, you need a way to bounce a lot of data quickly back and forth, so having that large cache is crucial. Couple this with the PCIe 4.0 support and it’s clear to see why this has so many high-end builders excited.
If you want to read more about data transfer rates and why having that large L3 cache and PCIe 4.0 is a big deal, go have a read through my data transfer rates comparison article.
One interesting thing to note here is, if you are going to manually overclock and not use the fancy auto boosting tech, across all of these cores you’re realistically looking at topping out around 4.3GHz. This isn’t super surprising as boost clocks tend to be limited to a certain number of cores on these huge CPUs anyway. Yet the fact that you can still push a CPU with this many cores/threads to that level and have it be stable under load is still insanely impressive.
Early Benchmark Results
In single-core applications where IPC is important (gaming), the AMD Ryzen 9 3900X is giving the i9–9900K a run for its money. So much so that the frame rate difference in most games is down to the single digits. This is crucial to notice, as they’re about the same price and you know Intel will leverage that (now small) advantage as much as possible.
However, when it comes to multi-threaded performance, there’s a reason AMD put this up against the $1200 i9–9920X. From their data and early review benchmarks, the R9 3900X was faster in productivity tools like Blender and Premiere Pro rendering. That’s despite the 9920X having 12-cores/24-threads too, showing just how big AMD’s jump in price-to-performance ratio is. That comes down to things like the smaller cache on the Intel chip vs the AMD chip, so the Intel chip can’t utilize its cores as well.
So, with the big numbers and your hype potentially through the roof at this point, let’s take a look at the other parts of this build. The main aim here will be to get every ounce of power out of the system. Our main chart‘s ‘Enthusiast’ tier already has a reasonable, economical build featuring the R9 3900X — so this build will be disregarding cost in order to provide truly excellent, maximized performance.