AMD Ryzen 7000 “Zen 4” CPU lag rumors are piling up, BIOS said to be the main culprit

AMD Ryzen 7000 CPU box package renders. (Image Credits: Technetium_Tech)
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AMD’s Ryzen 7000 “Zen 4” CPU and the respective AM5 platform doesn’t seem to be going through a smooth launch schedule. Ahead of the August 29 reveal, several rumors have surfaced that the chips could experience a brief delay.

AMD Ryzen 7000 “Zen 4” Desktop CPUs and AM5 Platform Lag as BIOS Issues Accumulate

While AMD has Approved that the official unveiling will take place on August 29th, with actual sales only starting a few weeks or even a month later. formerly us reported in our own exclusive that the launch could be pushed back to September 27th, the same day that Intel’s 13th Gen Raptor Lake CPU is unveiled.

Now there are more rumors (I don’t know if it’s appropriate to even call it a rumor now, considering these reports are from actual reviewers and also several insiders who work closely with motherboard manufacturers who know what’s going on) that the launch has indeed been delayed and has asked AMD to sign a new NDA more or less confirming the new launch date.

The following was published by nApoleon, Chiphell’s resident tech reviewer and editor in the forums:

One thing I want to be clear about is that the August 29 event will be a “reveal” and not an actual “launch” which is always supposed to happen in September. That The launch was previously scheduled for September 15 but that was only recently pushed back to September 27th. Now we know that the main reason for this delay is related to the BIOS. As with every Zen generation, the BIOS has been a crucial part, undergoing various revisions for improved CPU and memory support. This time, just like the AM4 platform, there will be multiple revisions before and after launch.

So far we’ve heard that there have been at least 7 AGESA BIOS revisions in total, starting with Patch A through Patch G. The latest BIOS was released this month and it’s not running smoothly either.

Gigabyte has listed the AGESA Patch D (legacy BIOS) for its X670E AORUS master motherboard.

Previously, motherboard manufacturers were expected to release AGESA BIOS v1.0.0.1 Patch D with their motherboards at launch, but that no longer seems to be the case as the older BIOS is not optimized enough for AMD Ryzen 7000 CPUs and the AM5 motherboard platform, which also supports EXPO DDR5 memory. As such, there are reports that the official BIOS would be v1.0.0.2 at launch, and we will also see future revisions of the BIOS as they evolve.

For those wondering what these BIOS issues are related to, there are several revisions, each focusing on various optimizations, fixes, and support. The current SMU has been updated to 84.73 and supports AMD Ryzen 7000 16-core and 12-core CPUs, while the previous one added better OC capabilities for DDR5 memory.

The list goes on, but it’s not just about memory or CPUs. As previously mentioned, priority is given to updating AGESA BIOS firmware before and after the AM5 platform launches. Instead of sales starting now and users having to go through a cumbersome BIOS update process, AMD has delayed the launch to a later date for a smoother and better first-time experience for users on their next-gen platform.

AMD Ryzen ‘Zen 4’ Desktop CPU Expected Features:

  • Up to 16 Zen 4 cores and 32 threads
  • Over 15% performance increase in single-threaded apps
  • Brand New Zen 4 CPU Cores (IPC / Architectural Enhancements)
  • Brand new TSMC 5nm process node with 6nm IOD
  • 25% improvement in performance per watt over Zen 3
  • >35% improvement in overall performance compared to Zen 3
  • 8-10% improvement in instructions per clock (IPC) over Zen 3
  • Support on AM5 platform with LGA1718 socket
  • New X670E, X670, B650E, B650 motherboards
  • Dual channel DDR5 memory support
  • Up to DDR5-5600 native (JEDEC) speeds
  • 28 PCIe lanes (CPU exclusive)
  • 105-120W TDPs (high end ~170W)

For full details on AMD’s next-gen Ryzen 7000 desktop CPUs and their respective 600-series motherboards, check out our full next-gen family roundup here.

AMD Ryzen 7000 “Raphael” Desktop CPU “Preliminary” Specs:

CPU name Architecture process node cores / threads Core Clock (SC Max) cache TDP stories
AMD Ryzen 9 7950X Zen 4 5nm 16/32 ~5.5GHz 80MB (64+16) 105-170W ~$700
AMD Ryzen 9 7900X Zen 4 5nm 24.12 ~5.4GHz 76MB (64+12) 105-170W ~$600US
AMD Ryzen 7 7800X Zen 4 5nm 8/16 ~5.3GHz 40MB (32+8) 65-125W ~$400US
AMD Ryzen 7 7700X Zen 4 5nm 8/16 ~5.3GHz 40MB (32+8) 65-125W ~$300US
AMD Ryzen 5 7600X Zen 4 5nm 6/12 ~5.2GHz 38MB (32+6) 65-125W ~$200US

Which AMD Ryzen 7000 desktop CPUs are you most interested in?

News source: graphics cardz

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