Posted by: hmpf« on: February 22, 2020, 22:06:46 »
They aren't "the same" and it's not just about wattage. Due to manufacturing variations some chips are only good enough to work at a higher voltage with more cores enabled while others might have fewer working cores but be good enough to work at higher frequencies, and yet others are good enough to work at ultra-low-voltages. Same if you look at the 12, 16, 20core cpu's, a 12core cpu is just a 20core cpu with 8 cores "disabled", those 8 "disabled" cores might in reality be broken due to production-quality variations / manufacturing defects.of course they are binned. so what is you point? my 15/45w laptop will consume 0,5w more at idle than 15w? 1 fps less than 45w?
The 45W TDP cpu's, even though "same die according to spec" likely doesn't pass the testing at the lower voltages required to fit the lower power-envelope for the ULV-cpu's while still being able to run at the required frequency. if all chips could run at full speed at ultra-low-voltage they would likely just announce a huge breakthrough in power-savings to the industry..
current 15w chips are unable to work at 45w? and vice versa?
this meme is ridiculous:(
That "insignificant" 0.5W you're talking about is the difference between for example 16h or 13.5h batterylife in a Thinkpad X395. that's 2.5hours difference and to me that's very significant difference.