Intel LGA-1851 socket uncovered
A pinout map was shared by Jaykihn.
The upcoming S (desktop) and HX (mobile) platforms are set to feature very similar I/O capabilities. The HX variant, essentially a desktop-class CPU in a BGA package, shares almost identical architectures with its desktop counterpart. The key difference lies in an additional USB2 lane (literally one) present on the HX platform.
Both the Core Ultra 200K desktop PCs and Core Ultra 200HX mobile workstations/high-end gaming laptops will support PCIe Gen5 for graphics. However, initial models of these laptops are expected to stick with the GeForce RTX 40 series, which does not support this standard. Nonetheless, PCIe Gen5 support will become more prevalent, especially in terms of storage, with at least one 4-lane connection becoming commonplace on Intel devices.
Intel Arrow Lake and Lunar Lake IO configurations. PCIE and USB.
ARL-S / ARL-HX / ARL-H / LNL
Yes, the only difference between ARL-HX and ARL-S is one extra usb2 lane. pic.twitter.com/evruOWxIns
— Jaykihn (@jaykihn0) July 1, 2024
Unlike ARL-S and HX, the Arrow Lake-H represents a significantly reduced version, featuring PCIe Gen5 lanes reduced from 20 to only 8. Mobile graphics typically do not use more than 8 lanes anyway, and it seems that the SOC lanes are still Gen4. Worth noting that the low-power Core Ultra 200V “Lunar Lake” will also support PCIe Gen5 but with lanes reduced even further to 4. This configuration is sufficient to support a single SSD utilizing this interface.
| Intel Next-Gen Platforms | ||||
|---|---|---|---|---|
| VideoCardz.com | Arrow Lake-S Core Ultra 200K/nonK | Arrow Lake-HX Core Ultra 200HX | Arrow Lake-H Core Ultra 200H | Lunar Lake Core Ultra 200V |
| CPU/SOC | PCIe Gen5 x16 | PCIe Gen5 x16 | PCIe Gen4 x12 | PCIe Gen5 x4 PCIe Gen4 x3 PCIe Gen4 / GBE x1 UFS 1×2 USB 3.2 Gen2x1 x2 USB3 x2 USB2 x6 |
| I/O | PCIe Gen5 x4 PCIe Gen4 x4 | PCIe Gen5 x4 PCIe Gen4 x4 | PCIe Gen5 x8 PCIe Gen5 x4 (x4/x4) | – |
| PCH | PCIe Gen4 x14 PCIe Gen4 / SATA x7 PCIe Gen4 / GBE x2 PCIe Gen4 / SATA / GBE x1 USB2 x13 USB3 x10 | PCIe Gen4 x14 PCIe Gen4 / SATA x7 PCIe Gen4 / GBE x2 PCIe Gen4 / SATA / GBE x1 USB2 x14 USB3 x10 | USB2 x10 USB3 x2 | – |
If you accidentally drop something onto your CPU socket, it’s likely you’ll be able to identify which part of the CPU might be affected. However, repairing socket pins should be left to professionals with the right tools, for obvious reasons. The pinout map for the LGA-1851 socket shows where each of the pad is connected and which part of the socket is responsible for connections with the motherboard and other components.
Intel LGA-1851 pinout mapping, Source: Jaykihn
The first Core Ultra 200 product is now expected to hit the market in late Q3 (Lunar Lake) with Arrow Lake following through Q4 2024 and Q1 2025, as Intel deploys its Core Ultra 200K, non-K and mobile variants over the few months time.
Source: Jaykihn