The Ryzen 9 3900X redefines our expectations for the mainstream desktop with 12 cores and 24 threads for roughly the same price as Intel’s eight-core Core i9-9900K. The extra cores deliver big gains in heavily threaded applications, and the improved architecture offers great gaming performance, too, making for an incredibly well-rounded processor. Support for the PCIe 4.0 interface is the cherry on top.
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The first generation mainstream Ryzen hardware in 2017 was a breath of fresh air in a market that had become sufficiently stale to be unexciting. With the color drained, AMD’s Ryzen enabled up to eight cores on a single CPU, and at the time aimed to throw its weight against Intel’s hardware in the class above. The new architecture didn’t push ahead on day one clock for clock, but it enabled a different paradigm at an obscenely reasonable price point.
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The Ryzen 9 3950X lets you jam highly threaded horsepower into an affordable motherboard, creating a new CPU class all its own. Its 16 cores and 32 threads redefines what’s possible for the mainstream, and its comparatively affordable price-per-core is a great value.
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With the Ryzen 9 3900X, AMD dashed the hopes of enthusiasts and didn’t release a non-X version. It turns out there is a non-X model, but it is headed to OEM and system integrator (SI) builds, meaning you’ll have to buy the chip in pre-built systems.
However, the Ryzen 9 3900 also gives us a taste of what to expect from AMD’s new Eco-Mode feature, which allows you to downshift AMD processors into lower TDP envelopes with a single click in the BIOS or Ryzen Master software.
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Out of the box, the Ryzen 5 3600X is the best processor in its price range for gaming and productivity. AMD throws in support for PCIe 4.0, superior power efficiency, an auto-overclocking tool, and capable bundled cooler, making the Ryzen 5 3600X the best mid-range processor on the market.
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Out of the box, the Ryzen 7 3800X offers a better mixture of single- and multi-threaded performance than Intel’s competing chips, and support for the PCIe 4.0 interface unlocks the potential of ultimate storage throughput. The impressive power efficiency and performance make for a compelling upgrade, but value-seekers who aren’t afraid of minimal tuning should look to the less-expensive Ryzen 7 3700X for similar performance.
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Starting at the top we have the Ryzen 3900X, which is a 12-core design. In fact it’s the first 12-core processor in a standard desktop socket, and it rather unique within AMD’s product stack because it is currently the only SKU which takes full advantage of AMD’s newest chiplet architecture. Whereas all the other Ryzen parts are comprised of two chiplets – the base I/O die and a single CPU chiplet – 3900X comes with two such CPU chiplets, granting it (some of) the extra cores and the 64MB of L3 cache that entails.
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AMD’s Athlon line-up dominates the low-end for gaming on integrated graphics, and the low price points undercut competing Intel Pentium processors. The addition of unofficial overclocking sweetens the deal, and similar host and graphics processing resources on all three models levels the playing field after tuning, meaning you can score the cheapest model and enjoy the same performance as the most expensive Athlon.
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Much like the first gen counterparts, the 2500X is a quad core processor with simultaneous multi-threading while the 2300X is a straight forward quad core. The X processors usually have a higher thermal design power (TDP) than hypothetical non-X equivalents, allowing them to take advantage of AMDs Extreme Frequency Range technology for higher turbos for longer given sufficient cooling, although these are set at 65W, similar to non-X processors.
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In the course of our reviews, when we get a chance to get hands on with random processors, we run our test suite and add the data to our database. Sometimes that doesn’t materialize directly into a review, but at least we have the data. Two very similar CPUs have come across my desk recently: AMD’s dual core Athlon 200GE, and Intel’s Pentium G5400. Both chips round to the $60 mark, have some form of integrated graphics, and are aimed at budget systems.
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