AMD cuts functionality of Ryzen 7000 chips in new firmware |
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With one of the fresh microcode updates, AMD has disabled the Loop Buffer feature in Ryzen 7000 series processors. Let's find out what it means for users and how the ?innovation? affected the performance of branded chips. Loop Buffer is a dedicated storage for repetitive instructions of the processor, which allows the processor not to refer to cache memory for them when cycling through the same operation. At one time AMD implemented such a feature only in processors with Zen 4 architecture, but recently disabled it. According to specialized media, the matter is that software developers have not realized its potential at the application level. Zen 4 chips have already received a decent amount of cache memory with sufficient bandwidth. Therefore, according to analysts, the new feature was not in demand, including due to the lack of detailed documentation for developers. Chips and Cheese users were among the first to report about the Loop Buffer disabling - enthusiasts noticed the ?downgrade? of the Ryzen 9 7950X3D processor. The feature still worked in AGESA firmware 1.0.0.6, but disappeared in version 1.2.0.2a. According to performance tests, the change had almost no effect on CPU  CPU is the abbreviation for central processing unit (the processor). The CPU is the brains of the computer where most calculations take place. capabilities: the loss of processing power amounted to only 1% in integer and floating point operations. Processors without 3D V-Cache suffered a bit more - they lost up to 5% of performance in Cyberpunk 2077.
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