Thanks to Igor’s Lab, we have some details on Intel’s future socket: the LGA-1851. This will be needed to accommodate the brand’s new Arrow Lake-S processors. So, what’s the difference with the current LGA-1700?
LGA-1851: what’s new about the LGA-1700?
From a dimensional point of view, there are no major changes to the size of the socket. It still measures 37.5 x 45 mm. However, there may be some minor variations in height.
These may cause some contact problems, particularly with your heatsink. When the LGA-1700 arrived, some LGA-1200-compatible heatsinks offered insufficient CPU pressure despite the use of compatible mounting kits. This is something to keep an eye on.
Otherwise, the locking system seems to be identical to the current one, and it remains to be seen whether the pressure it exerts bends the CPU’s IHS as is currently the case. If not, Contact Frame and BCF are likely to be the order of the day.
Now for the socket’s different pinout, which is logical since it has more compact dimensions. The latter increase from 1700 to 1851, i.e. by 9%. The reason for Intel’s change of socket is to catch up with AMD’s support for PCIe 5.0 SSDs, since the Reds support this type of storage natively from the processor. With Intel, you have to reroute the lines of a PCIe x16 to reuse them for storage… Not an easy task. The blues then announce native support for four PCIe 5.0 lines in addition to the four PCIe 4.0 lines.
Finally, the launch of Arrow Lake-S and this LGA-1851 is scheduled for late 2024. A whole series of chipsets will follow: the 800 series.
