The new AMD Ryzen Threadripper 3990X is a 64 core, 128 thread processor designed for the high-end desktop market. The CPU is a variant of AMD’s Enterprise EPYC processor line, offering more frequency and a higher power budget, but fewer memory channels, fewer PCIe, and a lower memory capacity support. The 3990X is at that cusp between consumer and enterprise based on its features and cost, and it’s ultimately going to compete against both. On paper, users who don’t necessarily need all of the 64 core EPYC features might turn to the 3990X, whereas consumers who need more than 32 cores are going to look here as well. We’re going to test against both.
The TR3990X is part of the Threadripper 3000 family, and will partner its 32 core and 24 core brethren in being paired with new TRX40 motherboards. Despite the same socket as the previous generation Threadrippers, AMD broke motherboard compatibility this time around in order to support PCIe 4.0 from the CPU to the chipset, allowing for higher bandwidth configurations for extra controllers. We’ve covered all 12 of the TRX40 motherboards on the market in our motherboard and chipset overview, with a lot of models focusing on 3x PCIe 4.0 x16 support, multi-gigabit Ethernet onboard, Wi-Fi 6, and one even adding in Thunderbolt 3.
All the Threadripper 3000 family CPUs support a total of 64 PCIe 4.0 lanes from the CPU, and another 24 from the chipset (however each of these use eight lanes to communicate with each other). There are four memory channels, supporting up to DDR4-3200 memory, and each CPU has a rated TDP of 280 W. We’ve tested the 3970X and 3960X when those CPUs were launched.
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3 reviews for AMD CPU Threadripper 3990X