Both chips also support two channels of DDR4-3200 memory. Instead, devices connected to Intel's chipset operate at PCIe 3.0 speeds, meaning you'll only have support for one PCIe 4.0 m.2 port on your motherboard, whereas AMD's chipset is fully enabled for PCIe 4.0. The 11900K comes with a 125W TDP rating, which, as we'll show in the power section, really doesn't mean much.īoth the Ryzen 5000 and Rocket Lake chips come with PCIe 4.0 support, though it is noteworthy that Intel's chipset doesn't support the speedier interface. The Ryzen 9 5900X operates at a 4.8 GHz boost across two of its cores, comes with twelve cores and 24 threads, and has a 105W TDP rating. Intel's ABT tech pushes power consumption to the extreme, while AMD's chips stay in their sweet spot during normal operation courtesy of their own Precision Boost 2 tech that accomplishes a similar task as ABT, but in a more reasonable way. This feature is only available with Core i9 chips. Think of this much like a dynamic auto-overclocking feature that applies to all-core boosts, but the chip remains within warranty. Two of the 11900K's cores boost to a peak of 5.3 GHz, and all cores can operate at 4.8 GHz simultaneously. Intel has four total boost technologies with the 11900K, including the new Adaptive Boost Technology (ABT). Naturally, speedier clocks can extract more performance from each core. Basically, we should regard the Rocket Lake cores and Zen 3 cores as pretty closely matched, so with four additional cores, the Ryzen 9 5900X should win in most of our threaded benchmarks. According to our IPC measurements, AMD's Zen 3 cores are still slightly faster than Rocket Lake in most work, though the latter does pull out a few wins. Core counts aren't the end-all-be-all, of course, as different architectures deliver varying levels of performance per core. The Core i9-11900K comes with eight cores and 16 threads, which is two fewer cores than the previous-gen Core i9-10900K and a woeful four cores behind the Ryzen 9 5900X. Intel 11th-Gen Core Rocket Lake-S Specifications and Pricing We put Intel's flagship Core i9-11900K vs the Ryzen 9 5900X in a six-round faceoff to see which chip rises to the top. That means Intel doesn't need outright benchmark supremacy to win this battle it just needs a good enough blend of features paired with solid pricing and availability to score the win. Unfortunately, AMD has been plagued by chip shortages - you simply can't find the Ryzen 9 5900X in stock for reasonable pricing - leaving Intel an opening to capitalize. Have no doubt Intel is pushing the Core i9-11900K's aging 14nm silicon to the absolute limits in an attempt to steal the crown from the Ryzen 9 5900X. Intel's response comes in the form of its Rocket Lake processors, which dial up the power to extreme levels and bring the new Cypress Cove architecture to the company's 14nm process as Intel looks to upset AMD's potent Zen 3-powered Ryzen 5000 chips. ![]() Intel burn test on ryzen Pc#AMD's Ryzen 5000 processors took the lead in the desktop PC from Intel's competing Comet Lake processors last year, upsetting our Best CPU for gaming recommendations and our CPU Benchmarks hierarchy. Today finds us pitting the AMD Ryzen 9 5900X against the Intel Core i9-11900K in a battle for flagship CPU supremacy. (Image credit: Tom's Hardware, Shutterstock)
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