Intel’s Arrow Lake-S “800-series” desktop CPU platform block diagram leaked, revealing dedicated Gen5 lanes.
Intel Arrow Lake-S desktop processors will support the 800-series platform with up to 20 dedicated PCIe Gen5 lanes
Intel’s 800-series Arrow Lake-S desktop platform has leaked again. We previously saw platform details leaked as far back as January (2024) and now we have a newer diagram of the platform that is a little less detailed than the previous one, but looks like it was revealed in a partner presentation and posted on Chiphell. Forums.
In terms of platform, Intel will offer Arrow Lake-S desktop processors on its brand new LGA 1851 socket motherboards with 800 series PCHs, including the Z890, H870, B860 and H810 series. The highest-end motherboards will include up to DDR5-6400 memory, and a previous schematic of the platform revealed two additional SKUs with 6+8 and 6+16 configurations.
- Arrow Lake-S 8+16 (24 cores / 32 threads)
- Arrow Lake-S 6+16 (22 cores / 28 threads)
- Arrow Lake-S 6+8 (14 cores / 20 threads)
Intel’s new 800-series desktop platform will natively support much higher memory speeds of up to 6400 MT/s as mentioned in a dual-channel configuration. The CPUs will have native x16 PCIe Gen5 dGPU and x4 PCIe Gen5 M.2 lanes, plus additional x4 Gen4 PCIe lanes for M.2. Breaking down CPU and PCH I/O, we have:
Arrow Lake-S CPU I/O Capabilities:
- DDR5 UDIMM/SODIMM – 6400 MT/s Native
- 1×4 eDP 1.4b
- DP2.0 UHBR20/HDMI 2.1
- 2x USB 4.0 + TBT4/DP
- 2.0/HDMI 2.1 Type C
- A total of 24 PCIe lanes
- 20 PCIe Gen5 lines (1×16 + 1×4)
- 4 PCIe Gen5 Lanes (1×4)
- 8 SATA III lanes
ARL-S PCH for 800 series motherboards:
- DMI Gen4 1×8
- A total of 24 PCIe Gen4 lanes
- 6×4 controller (max.)
- 14 root ports (max)
- 8 SATA III lanes
- 3x GbE ports
- 10 USB 3.2 Gen2 x1 ports (every two ports can be used as one USB Gen 3.2 Gen2x2 port, maximum 4 are supported)
- 14 USB 2.0 ports
- 802.11ax R2 w/TDBC (160+80), BT6/WIFI7
- 1x CSME SPI
- 2 x TCH SPI
Interestingly, the Intel Arrow Lake Desktop CPUs will feature 20 usable PCIe Gen5 lanes, while the AMD Ryzen 9000 Desktop CPUs will feature 24 usable PCIe Gen5 lanes. So AMD has an advantage in the total number of Gen 5.0 lanes that the CPU offers. In terms of memory support, the Arrow Lake processors will remain with native DDR5-6400 support, while the Zen 5 processors will remain with native DDR5-5600 support.
Intel Arrow Lake-S desktop processors will head to the next generation LGA 1851 socket on 800 series motherboards with the following features:
- The lifespan of the LGA 1851 socket is planned until 2026
- Only DDR5 compatible, no DDR4 support
- It starts with the 800 series motherboards
- Memory support up to DDR5-6400 (native JEDEC)
- Expanded PCIe Gen 5.0 Lanes over CPU and PCH
- Support for the first Arrow Lake-S desktop family
- Arrow Lake-S CPUs have 3 MB of L2 Cache per P-Core
- Arrow Lake-S processors feature the refreshed Alchemist iGPU
- Arrow Lake-S processors feature integrated LLC “Adamantine” for GPU Tile
- Arrow Lake-S CPUs have 8+16, 8+0, 6+8 CPU SKUs
- Launch in 2H 2024
At Computex 2024, all of Intel’s motherboard partners revealed their next-generation designs based on the Z890 PCH and the LGA 1851 socket. Although none of the manufacturers listed the boards as Z890 products, they are easily recognizable as labels have been engraved on the heatsinks and IO boards. This is our Z890 motherboard coverage from the event:
Intel’s Arrow Lake-S desktop processors are set to launch for gaming platforms such as desktops later this year (October) and will compete with Zen 5-based AMD Ryzen 9000 “Granite Ridge” processors arriving later this month ( 31st of July). . Stay tuned for more information.
Comparison of generations of Intel desktop processors:
| Processor family | Processor architecture | Processor process | Processor cores (max.) | Platform Chipset | Platform drawer | Memory support | TDP | PCIe support | Commencement |
|---|---|---|---|---|---|---|---|---|---|
| Intel Coffee Lake | Coffee Lake | 14nm++ | 6/12 | 300 series | LGA 1151 | DDR4 | 35-95W | PCIe 3.0 | 2017 |
| Intel Coffee Lake Refresh | Coffee Lake | 14nm++ | 8/16 | 300 series | LGA 1151 | DDR4 | 35-95W | PCIe 3.0 | 2018 |
| Intel Comet Lake | Comet Lake | 14nm++ | 10/20 | 400 series | LGA 1200 | DDR4 | 35-127W | PCIe 3.0 | 2020 |
| Intel Rocket Lake | Rocket Lake | 14nm++ | 10/20 | 500 series | LGA 1200 | DDR4 | 35-125W | PCIe 4.0 | 2021 |
| Intel Alder Lake | Golden Cove (P-Core) Gracemont (E-Core) |
Intel 7 | 16/24 | 600 series | LGA 1700 | DDR5/DDR4 | 35-150W | PCIe 5.0 | 2021 |
| Intel Raptor Lake | Raptor Cove (P-Core) Gracemont (E-Core) |
Intel 7 | 24/32 | 700 series | LGA 1700 | DDR5/DDR4 | 35-150W | PCIe 5.0 | 2022 |
| Intel Raptor Lake Refresh | Raptor Cove (P-Core) Gracemont (E-Core) |
Intel 7 | 24/32 | 700 series | LGA 1700 | DDR5/DDR4 | 35-150W | PCIe 5.0 | 2023 |
| Intel Meteor Lake | Redwood Cove (P-Core) Crestmont (E-Core) |
Intel 4 | 14/20 | 800 series | LGA 1851 | DDR5 | 35-65W | PCIe 5.0 | 2024 (PS only) |
| Intel Bartlett Lake | Raptor Cove (P-Core) Gracemont (E-Core) |
Intel 7 | TBD | 700 series | LGA 1700 | DDR5/DDR4 | TBD | PCIe 5.0 | 2024 |
| Intel Arrow Lake | Cougar Cove (P-Core) Skymont (E-Core) |
Intel 20A TSMC N3 |
24/24? | 800 series | LGA 1851 | DDR5 | 35-125W | PCIe 5.0 | 2024 |
| Intel Panther Lake | Cougar Cove (P-Core) Skymont (E-Core) |
Intel 18A | TBD | 900 series | LGA 1851 | DDR5 | TBD | TBD | 2025 |
News Source: HXL (@9550pro)