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Intel’s Alder Lake produces extremely high latency with the new Gear 4 mode

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Intel’s Alder Lake is believed to be only a couple of months away from being released and now a new benchmark has been posted with a for sale listing, potentially showing Alder Lake running in its new Gear 4 mode.

According to @harukaze5719, this new benchmark testing had a Core i5-12600K 10-core CPU which was running at the AIDA64 cache & memory test. It has a DDR5 memory operating at DDR5-6400 and in the test, the memory bandwidth achieved was impressive at around 88-90GBps. However, memory latency took a huge hit, running at a sluggish 92.5ns. 

Intel’s Alder Lake produces extremely high latency with the new Gear 4 mode

Sources also report that the system was running with its Gear 4 enabled and in the last decade, Intel hasn’t released a single architecture that approached 92.5ns of memory latency. First introduced in its current Rocket Lake architecture, Gear improves memory support, however, it does so at the cost of latency.

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According to sources, when Rocket Lake was tested with Gear 2, it took a noticeable toll on system latency, directly impacting gaming performance. The memory latency results showed a similar trend, with 59.3ns for Gear 2 mode and 52.3ns for Gear 1. however, with Gear 4, Intel takes things to a whole new level and has cut the memory controller frequency to just a quarter of the memory frequency. This will allow the chip to support incredibly fast memory, but will also result in a large latency loss.

So if the leaked benchmark results are to be believed then it’s quite evident that the Gear 4 will nearly double the amount of memory latency of Gear 1, and is practically useless for PC gaming and other consumer-based applications. As system latency is far more important than memory bandwidth.

source

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Nivedita Bangari
Nivedita Bangari
I am a software engineer by profession and technology is my love, learning and playing with new technologies is my passion.

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