Name: Ryzen 3900XT
Brand: AMD
SKU: 13340928
Rating: 4.8 (44 reviews)

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Thanks to AMD SenseMI technology, the processor offers adaptive performance. AMD SenseMI automatically ramps up the processor to peak speed when the PC requires more power for demanding tasks. This means that performance is available when you need it. At the same time, power consumption is kept low during normal operation. To maximize performance from the Ryzen CPUs, processors with the X suffix are equipped with the new XFR feature. XFR allows these CPUs to automatically overclock beyond the regular boost clock. The maximum clock rate adjusts according to the cooling solution used, whether it be air, water, or liquid nitrogen. With the AMD Ryzen Master tool, which you can download for free, you can easily overclock the CPU thanks to its unlocked multiplier. Additionally, AMD Ryzen Master allows you to keep track of temperature and much more with ease.

Actual product image AMD Ryzen 3900XT (AM4, 3.80 GHz, 12 -Core)

Key specifications

Number of processor cores

A multi-core processor (or chip-level multiprocessor, CMP) combines two or more independent cores (normally a CPU) into a single package composed of a single integrated circuit (IC), called a die, or more dies packaged together. A dual-core processor contains two cores, and a quad-core processor contains four cores.

Number of threads

Max. TDP

The thermal design power (TDP), sometimes called thermal design point, refers to the maximum amount of power the cooling system in a computer is required to dissipate. For example, a laptop's CPU cooling system may be designed for a 20 watt TDP, which means that it can dissipate up to 20 watts of heat without exceeding the maximum junction temperature for the computer chip. It can do this using an active cooling method such as a fan or any of the three passive cooling methods, convection, thermal radiation or conduction. Typically, a combination of methods is used. The TDP is typically not the most power the chip could ever draw, such as by a power virus, but rather the maximum power that it would draw when running "real applications". This ensures the computer will be able to handle essentially all applications without exceeding its thermal envelope, or requiring a cooling system for the maximum theoretical power (which would cost more but in favor of extra headroom for processing power).

L3 Cache

Another issue is the fundamental tradeoff between cache latency and hit rate. Larger caches have better hit rates but longer latency. To address this tradeoff, many computers use multiple levels of cache, with small fast caches backed up by larger slower caches.

Multi-level caches generally operate by checking the smallest Level 1 (L1) cache first; if it hits, the processor proceeds at high speed. If the smaller cache misses, the next larger cache (L2) is checked, and so on, before external memory is checked.

As the latency difference between main memory and the fastest cache has become larger, some processors have begun to utilize as many as three levels of on-chip cache.

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