When does TDP start to matter in terms of CPU temps?

[Lockless]

I'm not sure if this applies everywhere else, but I live in a place where people firmly believe that AMD CPU's (primarily the 8350, 8320, 8XXX line) are hot and need to be liquid cooled regardless, even at stock voltage.


If I remember correctly, the transistor density of the 8350 is less than the 4770K/4790K or even the 4670K/4690K (not sure how many transistors this one has since I forgot). Then again, the 8350 has more than twice the TDP of the 4XXXK chips. I've seen some benchmarks, but I'm not posting them here since I am unsure if they are credible enough to be considered as reliable sources... and I forgot where to find them.

So, is the 8350/Pildriver (Is it Piledriver?) really cooler or hotter than the Haswell/Haswell Refresh (lets leave out Ivy Bridge, Haswell-E, Skylake, etc... out of this) chips? For the sake of a controlled environment, lets assume both of them are cooled by H100i's.

[Rolling Potatoe]

You mean cpu temps?

The fx line runs way cooled and throttles around 70°C while the intel cpu run to around 80-90°C.

The fx cpus just put out more heat  though, the water and radiator temps will be higher  accordingly.

[Curufinwe_wins]

I'm not sure if this applies everywhere else, but I live in a place where people firmly believe that AMD CPU's (primarily the 8350, 8320, 8XXX line) are hot and need to be liquid cooled regardless, even at stock voltage.

If I remember correctly, the transistor density of the 8350 is less than the 4770K/4790K or even the 4670K/4690K (not sure how many transistors this one has since I forgot). Then again, the 8350 has more than twice the TDP of the 4XXXK chips. I've seen some benchmarks, but I'm not posting them here since I am unsure if they are credible enough to be considered as reliable sources... and I forgot where to find them.

So, is the 8350/Pildriver (Is it Piledriver?) really cooler or hotter than the Haswell/Haswell Refresh (lets leave out Ivy Bridge, Haswell-E, Skylake, etc... out of this) chips? For the sake of a controlled environment, lets assume both of them are cooled by H100i's.

Temperature is misleading. Haswell actually generally runs at and handles higher temperatures than the 8350-series (due to the way intel's tim setup works). It however uses much less energy and all the energy any component generates eventually ends up as heat. Since Haswell uses around 50-75% of the power of the 8350 at stock speeds (and even less comparably with overclocks) it needs far less cooling to keep the temperatures within their respective safe limits.

 

Watercooling isn't needed on the 8350. It will help you reach higher clocks though (as you overclock it does tend to be thermally limited.)

[Mug]

8350 is Bulldozer, older than Piledriver.