Intel LGA-1851 platform rumored to continue through 2026, no DDR4 support

Intel LGA-1851 planned for 2024-2026

According to TLC (@leaf_hobby) Intel has started distributing first Arrow Lake-S engineering samples. 

While the leaker cautions that the tweets haven’t been completely verified, the source has previously disclosed confidential information which turned out to be correct. TLC’s latest series of tweets suggests that Intel’s LGA-1851 platform will continue until 2026, suggesting that the company plans to release at least three CPU series, assuming it sticks to its one-year cycle. However, it’s worth noting that this might not necessarily imply a new architecture, as manifested by the upcoming Raptor Lake Refresh.

At present, only ARL-S ES1/ES2 samples can be observed featuring 6 Performance and 8 Efficient cores. Those processors might be using a different node than the more capable variant with 8 Performance and 16 Efficient cores, the expected configuration for Intel’s next Core 9 desktop series. TLC speculates that the next-gen Core i5 CPU (potentially named Ultra 5 160) could incorporate 8 Performance cores, so 2 more cores than the i5-13600/14600 series.

We translated the remaining tweets:

• Is there CryoCooling design for Arrowlake-S? It’s still in progress, right?
• It seems LGA1851 will continue until 2026.
• In addition to Compute Tile’s L2 and L3 caches, there will be an added dedicated L3 cache for the GPU Tile. Oh, that reminds me of the fifth generation.
• Finally, it looks like there’s a refresh for the iGPU, huh? It’s only with the 15th generation.
• ARL-S 6+8, are there only ES1 and ES2 for now? So does that mean i5-15600 (Ultra 5-160?) will become 8+0?
• It’s a fact that L2 increases by 3MB per core.

@leaf_hobby (translated)

TLC confirms the recent rumor about increased L2 cache for Arrow Lake-S P-cores to 3MB per core. Regarding Xe2 graphics, Intel is reportedly incorporating a dedicated L3 cache, mirroring Compute’s Tile configuration. Yet, it remains unconfirmed whether Arrow Lake will adopt Meteor Lake’s L4 “Adamantine” cache design.

The leaker had earlier shared what were believed to be Intel Z890 chipset specifications, originally intended for the Meteor Lake-S platform. However, these desktop series were subsequently canceled, delaying the Z890’s launch to the following year. The flagship Z890 chipset is anticipated to offer 20 PCIe Gen5 lanes, with 16 designated for the GPU and 4 for storage, an improvement over the existing 16-lane limit on the LGA-1700 series.

So far, all leaks related to the LGA-1851 platform have not mentioned DDR4 memory support. This aligns with information from @momomo_us, who asserts that Intel’s new platform will fully transition to the DDR5 memory standard:

> 至於 Intel Arrow Lake 則會在 2024 下半年推出，這個 LGA 1851 腳位的平台將完全轉換至 DDR5 記憶體。

— 188号 (@momomo_us) August 20, 2023

The same tweet also suggests that Intel’s Arrow Lake-S should not be expected until the second half of 2024. It appears highly likely that the Raptor Lake Refresh will continue as Intel’s main desktop platform in the foreseeable future.

Source: @leaf_hobby via ITHome