The LGA 1851 socket made its debut with Intel's 15th generation Core Ultra 200 series processors, code-named "Arrow Lake," in 2024. This article explores which processors are compatible with the LGA 1851 socket and offers our expert recommendations for LGA 1851 compatible CPU coolers
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LGA 1851 CPU List
Intel's 15th Gen Core Ultra CPUs are compatible with socket LGA 1851 motherboards.
| Processor Branding | CPUs Models |
|---|---|
| Intel Core Ultra 9 | Core Ultra 9 285K, 285 |
| Intel Core Ultra 7 | Core Ultra 7 265KF, 265K |
| Intel Core Ultra 5 | Core Ultra 5 245KF, 245K, 235, 225F, 225 |
Find Intel Core Ultra CPUs on Amazon
Motherboard Requirements for LGA 1851 Processors
Motherboards for Intel processors are made with chipsets provided by Intel. Each chipset offers a unique set of capabilities. However, motherboards must explicitly support features and capabilities for you to use them. Verify that a motherboard supports the features and capabilities you desire.
For 15th Gen Intel Core Ultra 200 series processors, you'll need a motherboard with an LGA 1851 socket and a 800-series chipset.
The Intel Core Ultra Desktop Processors (Series 2) introduce the LGA 1851 socket, designed to accommodate more pins than its predecessor, the LGA 1700. Despite sharing the same physical dimensions, the LGA 1851 socket is not backward compatible, necessitating a new motherboard. Additionally, these processors require the Intel 800-series desktop chipset, making them incompatible with older 700 and 600 series chipsets.
While transitioning to the LGA 1851 socket requires a new CPU, existing CPU coolers designed for LGA 1700 remain compatible, thanks to the identical mounting hole configuration. This means you can continue using your current CPU coolers without needing any modifications.
To summarize, upgrading to the new processors requires a new motherboard and chipset, but it also enables seamless integration of existing cooling systems.
You will need a motherboard with overclocking support to overclock these 15th Gen CPUs. Motherboards with the Z890 chipsets typically support CPU overclocking. B860 chipsets support only RAM overclocking, whereas H810 chipsets allow RAM overclocking but the chipset itself doesn't support overclocking.
The W880 and Q870 chipsets are intended for workstation and business use cases; their availability in stand-alone motherboards is limited.
Learn more about compatible motherboard chipsets in our article, LGA 1851 Motherboard Chipsets.
for a specific LGA 1851 CPU:
Recommended LGA 1851 Coolers
While the LGA 1851 socket requires a new CPU, Existing CPU coolers designed for LGA 1700 remain compatible, thanks to the identical mounting hole configuration.
Locked Intel CPUs are typically bundled with a stock CPU cooler and are identifiable by the absence of the "K" in their model name. While these coolers are adequate for preventing the CPU from overheating, they may limit the processor's performance during demanding tasks such as gaming. Additionally, stock coolers may produce noticeable noise when running at maximum speed.
A higher TDP cooler is recommended to sustain the peak speeds for extended periods to ensure optimal performance.
A CPU cooler that is compatible with the LGA 1851 socket will be required. While transitioning to the LGA 1851 socket requires a new CPU, existing CPU coolers designed for LGA 1700 remain compatible, thanks to the identical mounting hole configuration.
Best LGA 1851 AIO Liquid Coolers
CORSAIR Nautilus 360 RS ARGB
CORSAIR Nautilus 360 RS ARGB Supports LGA 1851: YES Max TDP: 260 watt Type: Liquid Cooler Check the latest price of the CORSAIR Nautilus 360 RS ARGB on Amazon
Designed for Intel LGA 1851, 1700 and AMD AM5, AM4 sockets
Three RS120 ARGB fans with Magnetic Dome bearings (544.6 gal/min airflow, 4.15mmH2O static pressure @ 1700 RPM)
Direct 4-pin PWM motherboard connection with daisy-chaining support
We estimate that this supports roughly a 260-watt TDP (Thermal Design Power).
Ultra-quiet 20 dBA pump noise with Zero RPM fan mode
360mm aluminum radiator with 450mm flexible tubing
Copper cold plate with pre-applied thermal compound
Addressable RGB lighting on pump and fans (motherboard sync)
Includes universal mounting hardware and 5-year warranty
Best LGA 1851 Dual-Fan Air CPU Coolers
Noctua NH-D15
Noctua NH-D15 Supports LGA 1851: YES Max TDP: 220 watt Type: Heatsink & Fans I found the dual 140 mm fans to be incredibly powerful, providing an impressive 220-watt TDP (183 NSPR) of cooling capability.
With support for such a diverse range of CPU sockets, I found the Noctua NH-D15 to be a very flexible and adaptable cooling solution. Its supported socket types include Intel LGA 1851, 1700, 1200, 1156, 1155, 1151, 1150, 2011, 2066 and AMD AM4, AM3, AM3+, AM2, AM2+, FM2, FM2+.
In my experience, the Noctua NH-D15 operates very quietly, with a noise level of just 24.6 dBA.
I am extremely satisfied with the Noctua NH-D15 cooler and would highly recommend it to anyone who is looking for a high-performance and versatile cooling solution.
Thermaltake TOUGHAIR 510
Thermaltake TOUGHAIR 510 Supports LGA 1851: YES Max TDP: 180 watt Type: Heatsink & Fans As someone who isn't a big fan of flashy LED lights, I appreciated the simplicity of the Thermaltake TOUGHAIR 510, which doesn't have any fancy lights but still looks great in my system.
I found that the dual 120 mm fans on the TOUGHAIR 510 did an excellent job of keeping an LGA 1851 CPU cool, even under heavy workloads.
If you're worried about the TOUGHAIR 510 taking up too much space in your system, Thermaltake offers a few single-fan variants that use different orientations, so you can choose the one that works best for your setup.
With a max speed of 2000 RPM, the TOUGHAIR 510 provides optimal cooling performance when you need it most.
With a 180-watt TDP (Thermal Design Power), the TOUGHAIR 510 offers solid cooling performance and is a great choice for anyone looking for a reliable and efficient cooling solution for their CPU.
