"ancient" Penryn (late 2000s laptop CPU) temps surprisingly low...

[Turbonium]

Can someone knowledgeable tell me if this is as expected or not?:

17 year old Vostro 1400 maxed out...

I recently acquired an old Penryn-era Core 2 Extreme X9000 (2.8GHz) CPU to replace the T9500 (2.6GHz) I had before in this Vostro 1400. I even splurged and got what seems to be an original/genuine era-correct sticker that I applied to the laptop. For anyone curious: 4GB RAM, SSD, updated...

forums.anandtech.com

The max/throttle for the CPU is 105C, but this isn't even getting close to 70C with full load (Prime95 for 10 minutes). Wtf?

Intel® Core™2 Extreme Processor X9000 (6M Cache, 2.80 GHz, 800 MHz FSB) - Product Specifications | Intel

Intel® Core™2 Extreme Processor X9000 (6M Cache, 2.80 GHz, 800 MHz FSB) quick reference with specifications, features, and technologies.

www.intel.com

 

[CouncilorIrissa]

I've never had such a part, but it makes sense intuitively. It's a fairly low-wattage part with quite a big die (107mm^2), hence low thermal density, and the cores in older CPUs used to occupy relatively bigger part of the die. Modern CPU cores run quite a bit hotter because they pull a lot of power in a small area => high thermal density.