Lenovo ThinkPad X13 and ThinkPad T14 powered by AMD Ryzen 4000 APUs may be around the corner

[Joel Kleppinger]

i want? we all want. 15-45w switch, software or button, who can say no?
these chips are the same, their bios settings are different, in case someone think they are manufactured differently.
where is a big waste, i dont get it?

The issue isn't a performance one like you suppose.  It is one of cooling/size/weight.  Cooling 45W is much harder than cooling 15W.  To do so effectively requires a bigger cooling system, and thus, a bigger laptop.

Much can be done within the 15W power envelope with its size/weight/battery-life advantages.  15W laptops are for the people happy with that compromise.

While others don't want to compromise performance.  They get the 45W CPU laptops.... and others still have 45W CPUs + 45W GPUs.

Some OEMs DO compromise the cooling system... effectively running 45W CPUs on 15W quality cooling systems.  And those are the laptops notebookcheck correctly pans since you think you are getting 45W performance, but really a 15W CPU is just as fast or even faster in such a system.

[william blake]

The issue isn't a performance one like you suppose.  It is one of cooling/size/weight.  Cooling 45W is much harder than cooling 15W.  To do so effectively requires a bigger cooling system, and thus, a bigger laptop.

no worries, i know what im talking about. do you understand how small these 45w(cpu+gpu) laptops could be? 13 inches zenbook, vivobook, switch, envy, etc..1,2-1,3kg, they are all with 15w(12-35) cpu+discrete mx150/250, which is not less than 45w(35-54) cpu with igpu.
put h-renoir in it and give me a button to turn between 15 and 45 modes.

[hmpf]

The issue isn't a performance one like you suppose.  It is one of cooling/size/weight.  Cooling 45W is much harder than cooling 15W.  To do so effectively requires a bigger cooling system, and thus, a bigger laptop.

no worries, i know what im talking about. do you understand how small these 45w(cpu+gpu) laptops could be? 13 inches zenbook, vivobook, switch, envy, etc..1,2-1,3kg, they are all with 15w(12-35) cpu+discrete mx150/250, which is not less than 45w(35-54) cpu with igpu.
put h-renoir in it and give me a button to turn between 15 and 45 modes.

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.

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..

[Pouya M.]

I'd recommend having a look at the T480s, it has a relatively small chassis, however they fit a ginormous heatsink in it (basically you get a heatsink designed for dGPU on a system without one). The result? It's super quiet and cool when on the go, but when plugged into AC it switches to 45W/45W (as opposed to most laptops in the same league that do 25W/45W). And results are prominent! I get a full day of battery life (around 7ish hours) out of him, and it can ramup power when I need it too (it compiles in similar time with my 6th gen desktop CPU, where as my colleagues Lattitude with similar spec and less cooling struggles to do the same task in double the time!)

Was very disappointed to see they moved away from that in the T490s, it looks like I will be holding on to the T480s as long as I did with my T430...

[william blake]

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.

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..

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?
current 15w chips are unable to work at 45w? and vice versa?
this meme is ridiculous:(

[hmpf]

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.

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..

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?
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.