Before the release of motherboard on base of chipsets intel bearlake (Intel p35 and others) appeared information such motherboard can not support netBurst architecture processors . Later motherboard producers explained, that similar limitations is not recommended , and the support of old processors will be provided.
Now, when motherboard on base of chipset intel p35 received sufficiently wide acceptance, it has sense to check again the problem with old processors support . Motherboard on chipset intel p35 from the majority of producers do not ensure support to many 90 nm processors Pentium 4, Pentium D and Celeron D, which use 533 MHz system bus. Which is characteristic, 65 nm processors celeron D with NetBurst architecture and 533 MHz system bus are not also supported.
Intel representatives , reported to us that intel p35 chipset it is not originally intended for 90 nm processors support . This possibility was not placed in the chipset design, it seemed excess for Intel . Motherboard producers could introduce some modifications at the power system level in order to ensure the support of separate 90 nm processors. So We can observe, that the processors Pentium 4 and Pentium D on 90 nm core with 800 MHz system bus are completely successfully supported in motherboards on base Of intel p35 .
Conclusion : if have a 90 nm intel processor and you plan to purchase motherboard on base of chipset intel p35, it is necessary to verify the list of supported processors .