After the controversy involving the performance of the Arrow Lake Intel processor generation in games, now we have confirmation that the Core Ultra 200s also cause bottlenecks in SSDS NVME PCIE 5.0 connected to M.2 doors. The information comes from The SSD Review, which conducted a variety of hardware tests and then obtained Intel’s own statement about the problem.
The problem was observed when site reviewers noted that an SSD that should reach 14GB/s was just 12GB/s in a system based on Arrow Lake. There were then several tests on Z890 boards with different SSDs compared to Z790 boards. After seeing the results and contact the companies involved, the site concluded that the bottleneck is in Intel processors.
The SSDs used were a Samsung 9100 Pro and a Micron 4600. They were tested on Z890 plates with Arrow Lake and compared to the past generation of Intel itself – Raptor Lake processors on Z790 boards.
In the present generation the drives reached a maximum of 12.3gb/s, while they had no problem hit 14.3gb/s on the most “old” plates. The site also states that it was unable to find any SSD M.2 capable of arriving at 14GB/s on Arrow Lake systems. And the tests were reproduced on motherboards from different manufacturers, with similar results.
Intel admits greater latency in certain PIE lanes in the Arrow Lake
The SSD Review says that it contacted the plates manufacturers, and Asus and Asrock were able to replicate the problem internally. The two companies said the extra latency in the operation of SSDs comes from component I/O Extender in CPUS from the Intel Core 200S series.
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Complementing the information, the site received a statement from Intel itself, confirming more latency in certain PIE lanes for the Arrow Lake. “Intel can confirm that Lanes 21 to 24 PCI Gen5 Root port on processors of the Intel Core 200S series may have increased latencies compared to 1 to 16 PCIE Gen5 root port, due to a longer Die-to-Die data path.”
According to the test site, Lanes 21 to 24 pass through the Tile of I/O Extender, confirming the conclusions presented by Asus and Asrock.
Via: Tom’s Hardware
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Source: https://www.adrenaline.com.br/intel/intel-arrow-lake-apresenta-gargalo-em-ssds-pcie-5-0-que-limita-velocidades-de-14gb-s-para-12gb-s/
