Intel ‘LGA-1851’ Platform Tipped to Launch in H2 2024 & Will Not Support DDR4 Memory
Hardware leaker TLC has dropped a series of tweets where we see a lot of details regarding Intel’s upcoming LGA 1851 platform. Allegedly, LGA 1851 or the 800 series of motherboards will launch in the second quarter of 2024. Moreover, this platform will be supported until 2026.
Arrow Lake-S ‘LGA 1851’ Platform Leaks
The leaker mentions that two Engineering Samples designs with 6P + 8E cores are under consideration. Similarly, the i5-14600 (Ultra 5 160) is expected to boast 8 performance courses, 2 more than the i5-13600 and i5-14600.
There may be a node difference between the higher-end and lower-end SKUs, though nothing is official.
LGA 1851 will support Arrow Lake and possibly a future generation as well. After Arrow Lake, MLID expects Intel to launch Nova Lake for desktop. Panther Lake, much like Lunar Lake may remain exclusive to the mobile market.
The iGPU featured in Arrow Lake will have a dedicated L3 cache. By dedicated, the leaker means that the L3 cache will be placed on the GPU tile / chiplet. It is possible for the Compute Tile to access this L3 cache, but that may introduce latency issues.
Recently, we saw a leak alleging that the L2 cache has increased by 50% (2MB – 3MB) per core. TLC has verified this claim, however, the L3 slice size should remain similar to Raptor Lake. Therefore, if we take the 40-core (8P+32E) ARL-S flagship into account, expect 56MB of L2 cache and 48MB of L3 cache.
Z890 Chipset & Intel’s Plans for Arrow Lake
The same leaker has in the past, shared specifications regarding the LGA 1851 platform. To recap, LGA 1851 will offer 20 PCIe Gen5 + 4 PCIe Gen4 lanes (CPU). The chipset should have 24 PCIe Gen4 lanes available. Of course, these are the specs for the Z890 chipset. The B860 and H810 chipsets will be slightly toned down in comparison.
All CPUs based on the LGA 1851 socket will require DDR5 memory, ending the era of DDR4. We expect to see support for DDR5-6400 but that is subject to change.
Currently, Intel plans to launch Raptor Lake Refresh (14th Gen) in the next few weeks. RPL-R will contend against AMD until Zen5 launches in H1 2024, after which Intel will launch Arrow Lake.
- Codenamed Arrow Lake ‘ARL’
- Lion-Cove based P-Cores / Skymont-based E-Cores
- Up to 40 Cores (8P+32E)
- SMT (Hyperthreading) Disabled
- Intel 20A (2nm) / TSMC N3B Process Technology
- Foveros (Chiplet) Design
- Introduction of PowerVia / RibbonFET
- ES up to 21% Faster Than Raptor Lake-S (13th Generation Desktop)
- Late 2024/Early 2025
- LGA 1851 Socket (Possible Support for 3 Generations)
Future Generations
| CPU Generation | Codename | TDP Range | Process Node | Performance Core Microarchitecture | Efficient Core Microarchitecture | Architecture | Release Date | Cores/Threads | Socket | Memory Support |
| 13th Generation | Raptor Lake (RPL) | 35W-125W | Intel 7 (10nm) | Raptor Cove | Gracemont | Hybrid (Dual Core) | Launched | 24/32 | LGA 1700 | DDR4-3200, DDR5-5600 |
| 14th Generation | Raptor Lake Refresh-S/HX (RPL-R) | 55W-125W | Intel 7 (10nm) | Raptor Cove | Gracemont | Hybrid (Dual Core) | Yet to Launch | 24/32 | LGA 1700 / Mobile Platform | DDR5-6400 |
| 14th Generation (1st Gen Core) | Raptor Lake U (RPL-U) | ~25W? | Intel 7 (10nm) | Raptor Cove | Gracemont | Hybrid (Dual Core) | Yet to Launch | ?/? | Mobile Platform | – |
| 14th Generation (1st Gen Core Ultra) | Meteor Lake (MTL) | ?/? | Intel 4 (7nm) | Redwood Cove | Crestmont | Hybrid (Triple Core) | Yet to Launch | ?/? | Mobile Platform | LPDDR5x-7500 |
| 15th Generation | Arrow Lake (ARL) | 35W-125W | Intel 20A (2nm)/TSMC 3nm | Lion Cove | Skymont | Hybrid (Quad Core) | Q4 24 | 40/40? | LGA 1851 | – |
| 15th Generation Mobile | Lunar Lake (LNL) | – | 18A | Lion Cove+ | Skymont | – | 2024+ | 8/- | – | – |
| 16th Generation Mobile | Panther Lake (PNL) | – | 18A? | Cougar Cove | Skymont/Darkmont | – | 2024/25 | – | – | – |
| 17th Generation | Nova Lake | – | 14A? | Royal Cove | – | – | 2026 | – | LGA 1851 | |
| 18th Generation | Beast Lake | – | 10A? | ? | ? | – | 2027? | 36? | – | – |
