After patching the BIOS, the user managed to make the Bartlett Lake P-core-only chip work on the conventional LGA 1700 platform.
Intel Bartlett Lake P-Core Only Core 9 273PQE Finally Booted into Windows Through Tricking the Firmware on Z790 Motherboard
Overclock user Kryptonfly was the first enthusiast to turn on his system using the Bartlett Lake CPU on a conventional Z790 motherboard. You might already know that Intel's Bartlett Lake CPUs aren't supported on consumer LGA 1700 motherboards, despite sharing the same pin layout as the Raptor Lake CPUs. As there are no BIOSes from motherboard vendors that can support these chips on consumer-grade LGA 1700 motherboards, you can't POST into the BIOS or boot into the OS.
However, Kryptonfly finally did it. He tricked Intel's firmware into thinking that the Core 9 273PQE is a Raptor Lake CPU during the early initialization. The Core 9 273PQE is the only CPU with 12-Performance cores and has popped up many times in various leaks. However, enthusiasts are interested to know how it performs against flagship Raptor Lake chips such as Core i9 14900K. Now, as Kryptonfly made it to the Windows through a custom BIOS and some patches, the motherboard no longer shows the 5F code on the motherboard.
The user has posted a few screenshots proving that the Core 9 273PQE is indeed working as normal in the system. The CPU offers 12 Performance cores and 24 threads, as you can see in the screenshot, running at 3418 MHz. With a 12-core/24-thread P-core-based configuration, it will be interesting to see its performance against similar core/thread-count CPUs as well as CPUs such as Core i9 13900K/14900K that deliver higher core count using a P+E core configuration.
Unfortunately, Intel won't be releasing the Bartlett Lake chips for the consumer market, but it would have been an interesting addition, as Intel is already struggling in the mainstream desktop market.
News Sources: Overclock, @unikoshardware
About the author: Sarfraz Khan is a hardware reporter with a focus on PC components and the builder community. With years of experience writing about PC hardware and laptops, his work has been featured on several reputable technology publications. Sarfraz's hands-on experience is demonstrated through his first-person accounts of using and comparing different hardware configurations, providing practical and relatable insights for everyday users. His technical analysis is respected by peers in the enthusiast community and has been cited by specialized hardware sites such as Germany's Igor's Lab.
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