there are no "desktop parts" anymore... it's the same CPU and difference is very marginal
let me take you back to memory lane and remind you how the Intel Core was brought about.
It started out as a Yonah, which was the mobile variant that morphed into Merom because Intel realized us Overclockers were putting Yonah on special boards with massive heat sinks, and spanking AMD X2 upside silly in SuperPI by several magnitudes.
Note AMD had performance crown back then too with the X2, (manchester) because intel thought the Smithfield / Prescott made good space heaters and people would enjoy that more then actual compute.
But Yonah changed Intel to dominance with Merom, to Conroe, and well, you know the history after that.
I had my hands on a Yonah, and man, those were the fun days.
When intel actually cared and listened to Tuners / Overclockers, and always tried to give us that little extra bit more.
That was then they had that famous video and Motto
"Overclocking so Easy, your Grandmother can do it".
Now i look at my 7960X Threadripper, and im like why do i need to change 5 sets of voltage for 1 stupid thing, and why is my voltages not sticking. Why do i even need to tune PBO and SOC and Infinity what?