Hardware leaker Raichu, known for accurately predicting Intel's moves, has unveiled intriguing details about the company's forthcoming desktop CPU lineup. According to the leaks, Intel is supposed to introduce a big shift in its desktop CPU naming convention with the arrival of the Core Ultra 200 series, codenamed Arrow Lake-S. This next-generation lineup promises to deliver one of the most significant performance leaps for desktop processors in recent years, marking a substantial departure from Intel's current naming strategy—a change that hasn't been witnessed in over a decade. The Core Ultra 200 series is expected to encompass a diverse range of tiers and variants, catering to various user needs. This includes the overclockable K models for enthusiasts, F variants without integrated graphics, and potentially low-power T models for energy-efficient SKUs. According to Raichu's leaks, the unlocked K-Series models are rumored to include the high-end Core Ultra 9 285K, the mid-range Core Ultra 7 265K, and the budget-friendly Core Ultra 5 245K. While the absence of a 290K part has raised eyebrows, these names resemble Intel's mobile CPU naming conventions.

To enjoy the Core Ultra 200 series, users will need to upgrade to new motherboards featuring the 800-series chipsets and the LGA-1851 socket. Unlike the Core Ultra 200V Lunar Lake models for mobile devices, details about the desktop version have remained scarce, shrouding the impending launch in an air of mystery. While Raichu's leaks carry significant weight, it's essential to approach such information cautiously. There's a possibility that SKUs like the 290K may still be introduced, as a new KS version, aligning with Intel's traditional naming conventions. The Core Ultra 200 series promises to cater to a wide range of desktop users, from the performance-hungry enthusiasts eyeing the Core Ultra 9 285K to budget-conscious consumers seeking the value proposition of the Core Ultra 5 245K. The Core Ultra 7 265K is expected to strike a balance between performance and affordability, targeting the mid-range segment. As more leaks and official information surface, we will continue to provide updates on this release from Intel.

Thanks to the 3D renders and technical drawings obtained by Igor's Lab, we have insights into the structure of Intel's next-generation LGA-1851 socket for Arrow Lake processors. Scheduled to arrive in mid-2024, the LGA-1851 socket was originally intended for Meteor Lake-S desktop processors. However, the socket is now awaiting Arrow Lake since Meteor Lake is now a mobile-only processor generation. The first notable thing about LGA-1851 is that it will directly connect a dedicated PCIe 5.0 x4 interface to the CPU, besides the x16 lanes going to the GPU. This results in native support for high-speed PCIe 5.0 NVMe SSDs that can achieve speeds of over 12 GB/s in both read and write workloads.

Intel Arrow Lake-S will be available with eight P-cores and 16 E-cores in SKUs with different combinations of the two. The accompanying 800 series chipset includes Z890, B860, and H810 models, with an evident absence of H870 SKU. There will be W880 and Q870 workstation-grade chipsets as well. It is worth pointing out that Arrow Lake will enable DRAM capacities of up to 48 GB per DIMM at 6400 MT/s. We expect to hear more about Arrow Lake-S as we near the 2024 launch date and we get to see the Intel 20A node being used in client products. Below, you can see the technical drawings of the Independent Loading Mechanism (ILM) and chipset 3D models.

The latest retail batch of Noctua's NH-U12A single-tower CPU coolers has been photographed sporting updated packaging and containing a new set of mounting brackets. Japan's Akiba PC Watch reported on new stock of Noctua's popular (and well reviewed) NH-U12A cooler sitting on shelves at Tsukumo Computer's flagship store in Akihabara, Tokyo. Their article pinpointed Socket LGA-1851 compatibility listed on the revised retail box, and documented within new installation instruction steps. They noted that: "according to the manual, the mounting bar and spacer for fixing the CPU cooler are shared with the existing LGA-1700 (kit)."

Noctua has not updated its NH-U12A product page or compatibility centre pages with these revisions, but Tom's Hardware did pick up on the NH-D15's overhauled entry: "now listed as having SecuFirm2 mounts compatible with Intel LGA-1851." The Austrian computer hardware manufacturer seems to pride itself on its preparedness well in advance of a forthcoming new CPU range—Akiba PC Watch cheekily observed: "it is currently unknown when CPUs and motherboards compatible with LGA-1851 will be released." Intel's 15th Gen Arrow Lake S is presumably the main candidate lined up to adopt LGA-1851—technical specifications were uncovered back in June time.

Igor Wallossek over at Igor's Lab has posted a range of technical specs for Intel's upcoming LGA-1851 socket and it covers everything from the pin-out to the mechanical characteristics of the new socket. The new socket is intended for Intel's 15th gen Arrow Lake S CPU. Raptor Lake refresh, which will launch as Intel's 14th gen—and last generation—Core i desktop processor, still uses LGA-1700. Although the new socket has additional pins, the physical size remains the same as the LGA-1700 sockets, so it's expected that current coolers will remain compatible with the LGA-1851 socket. However, the mounting pressure has almost doubled from 489.5 N to 923 N, suggesting that a different mounting kit might be needed.

What is more interesting with regards to the new socket is that Igor confirms that Intel will be adding four PCIe 5.0 lanes for a CPU connected NVMe SSD, but apparently Intel will also keep the current four PCIe 4.0 lanes for a second CPU connected NVMe SSD, not quite matching AMD's AM5 platform. It's likely that we'll see a similar segmentation like the one AMD has done, so only Z-series chipset motherboards will be able to take advantage of the PCIe 5.0 NVMe lanes, but it's possible some other chipset SKUs from Intel will enable PCIe 5.0 storage support as well.