{"id":4753,"date":"2026-01-28T15:54:07","date_gmt":"2026-01-28T15:54:07","guid":{"rendered":"https:\/\/teslhub.com\/?p=4753"},"modified":"2026-02-16T15:33:47","modified_gmt":"2026-02-16T15:33:47","slug":"hardware-4-5-in-arrivo-a-supporto-della-fsd-tesla","status":"publish","type":"post","link":"https:\/\/teslhub.com\/en\/hardware-4-5-in-arrivo-a-supporto-della-fsd-tesla\/","title":{"rendered":"Tesla Hardware 4.5: parts-catalogue listing raises three-chip questions"},"content":{"rendered":"

A reported entry in Tesla\u2019s Electronic Parts Catalog<\/strong> raised questions about a possible new version of its driving computer: Hardware 4.5<\/strong>. The listing suggested that Tesla might be preparing, or already using, another hardware revision, but did not establish its internal architecture.<\/p>\n\n\n\n

The name could suggest a relatively small revision<\/strong>, like HW4.1. The discussion around it, however, centred on whether it might conceal a more substantial technical change.<\/p>\n\n\n\n

<\/p>\n\n\n\n

The parts-catalogue discovery<\/h2>\n\n\n\n

Tesla observer Todd deReGo reported finding the following entry in the official electronic catalogue:<\/p>\n\n\n\n

CAR COMPUTER \u2013 LEFT HAND DRIVE \u2013 PROVISIONED \u2013 HARDWARE 4.5<\/strong>
Part number: 2261336-S2-A<\/strong>
Listed price: $2,300<\/strong><\/p>\n\n\n\n

Firmware researcher Green added another possibility to the discussion. Although he had not physically examined the computer, he noted that Tesla firmware had long contained references compatible with a possible three-SoC architecture<\/strong>. HW3 and HW4 use two system-on-chips. A third chip could change the design considerably, but the catalogue listing did not confirm one.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"FSD<\/figure>\n\n\n\n

<\/p>\n\n\n\n

Why might Tesla use three chips?<\/h2>\n\n\n\n

Tesla had not explained how a third chip would be used. One hypothesis concerned additional computing capacity<\/strong>. As FSD models grow in complexity, they need more memory and inference resources. A third SoC might help distribute work or support larger neural networks, depending on how the system was designed.<\/p>\n\n\n\n

Another possibility was redundancy<\/strong>. Three processing units can, in some architectures, support majority voting when their outputs differ. The article discussed Triple Modular Redundancy as a potential approach; it was not evidence that Tesla had implemented that arrangement or a guarantee of uninterrupted driving.<\/p>\n\n\n\n

A further hypothesis was running experimental software in shadow mode<\/strong> while the main system handled driving-related processing. That could allow comparisons using real-world data without giving the experimental model control of the vehicle. It remained a possible use, rather than a confirmed function of Hardware 4.5.<\/p>\n\n\n\n

<\/p>\n\n\n\n

A possible bridge towards AI5<\/h2>\n\n\n\n

The article cited Tesla\u2019s then-stated expectations for AI5<\/strong>: initial production in the second half of 2026 and meaningful volumes in 2027. Those were forward-looking targets. Hardware 4.5 was discussed as a possible intermediate step while software requirements continued to develop.<\/p>\n\n\n\n

It also considered Cybercab\u2019s use of AI4 and whether future vehicles might be upgraded to AI5. Compatibility and a role for HW4.5 were unresolved. The original reference to Cybercab production beginning in 2025 needs a separate timeline check and should not be read as a confirmed production milestone.<\/p>\n\n\n\n

<\/p>\n\n\n\n

AI5 and comparisons with data-centre chips<\/h2>\n\n\n\n

The report attributed ambitious inference-performance comparisons to Musk: a single AI5 SoC was compared with an NVIDIA H100, and a two-chip setup with newer Blackwell products. These were claims about particular workloads, not independent benchmarks or proof of equivalent general-purpose performance. The appeal was achieving useful in-car computing within much tighter power, space and cost limits than a conventional server.<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"FSD<\/figure>\n\n\n\n

<\/p>\n\n\n\n

What remained to be confirmed<\/h2>\n\n\n\n

At publication, Hardware 4.5 was a reported catalogue discovery rather than a fully explained product announcement<\/strong>. Its architecture, deployment and capabilities remained uncertain. A three-chip configuration could be a meaningful change if confirmed, but it was too early to present that possibility as an established specification.<\/p>\n\n\n\n

<\/p>\n\n\n\n

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Editor<\/em><\/p>","protected":false},"excerpt":{"rendered":"

A reported Hardware 4.5 computer listing prompted speculation about a three-SoC design before AI5.<\/p>","protected":false},"author":3,"featured_media":4754,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70,67],"tags":[],"class_list":["post-4753","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guida-autonoma-sulle-auto-elettriche-tesla","category-novita-in-arrivo"],"_links":{"self":[{"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/posts\/4753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/comments?post=4753"}],"version-history":[{"count":3,"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/posts\/4753\/revisions"}],"predecessor-version":[{"id":4848,"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/posts\/4753\/revisions\/4848"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/media\/4754"}],"wp:attachment":[{"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/media?parent=4753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/categories?post=4753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/teslhub.com\/en\/wp-json\/wp\/v2\/tags?post=4753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}