GN needs to start testing CPU performance on each cooler due to how Zen 4 and the 13/14th gen utilise thermal boost algorithms to run near their tJmax.
My 7950X3D runs at ~88c on both my 360mm AIO and the D15S that I currently have on it, but it does not maintain the same clock speeds on both coolers. It runs at 100-200Mhz higher on the AIO. Both can easily handle the wattage of the 7950X3D, but the better cooler still allows it to run slightly faster.
Slap a low end air cooler on a 7950X3D and it will still run at ~88c, but the clock speeds will probably be more like 4Ghz than 5Ghz+ like they will be on a high end cooler.
The big conclusion is that the issue has large impact only on artificial benchmarks that behave more like power virus than actual workload. Heavily parallelised productivity workloads can suffer a bit, but nowhere near enough to justify high end cooling for vast majority of users, especially on CPUs that aren’t strictly top of the line. And gaming is almost hilariously unaffected.
Well, the point of such lists, as well as any testing, should in theory be about judging products on being fit for purpose. What specific metrics you choose, how you weight them and how they are presented are all critically important. Especially if what you search for is not strictly the best possible performance and instead want a product that strikes a good balance between its various functional aspects as well as price.
For coolers you typically see them arranged mostly by temperature they reach under power virus workloads. Which IMHO is just fucking useless in light of how modern CPUs behave. Such metric will struggle in differentiating between multiple coolers that technically cause some thermal throttling as it doesn’t account for how much they actually throttle.
On the other end you have the option to just ignore temperature and instead measure performance impacts on actual workloads. Which is far more relevant to actual use cases and it allows for good differentiation between non-overkill coolers. But the cooler makers might not like that when it shows no difference between a $50 and $300 cooling solution.
Indeed. Current testing that measures just the temperature is basically the same as 20 years ago - when we had recent innovations like CPU shutting down the system when overheated instead of just frying itself. For the longest time when thermal throttling was introduced it was also very rudimentary - basically a binary situation between 100% performance or going down to like 25% when overheated with nothing in-between.
With modern CPUs pushing tons of extra watts for sake of marginal performance gains as well as precisely surfing the line of extracting vast majority of possible performance in given conditions it’s just terribly inadequate.
GN needs to start testing CPU performance on each cooler due to how Zen 4 and the 13/14th gen utilise thermal boost algorithms to run near their tJmax.
My 7950X3D runs at ~88c on both my 360mm AIO and the D15S that I currently have on it, but it does not maintain the same clock speeds on both coolers. It runs at 100-200Mhz higher on the AIO. Both can easily handle the wattage of the 7950X3D, but the better cooler still allows it to run slightly faster.
Slap a low end air cooler on a 7950X3D and it will still run at ~88c, but the clock speeds will probably be more like 4Ghz than 5Ghz+ like they will be on a high end cooler.
People on regular basis outright hilariously overstate the impact of thermal throttling during normal operation. Thechpowerup did a pretty good experiment with the 7950X.
The big conclusion is that the issue has large impact only on artificial benchmarks that behave more like power virus than actual workload. Heavily parallelised productivity workloads can suffer a bit, but nowhere near enough to justify high end cooling for vast majority of users, especially on CPUs that aren’t strictly top of the line. And gaming is almost hilariously unaffected.
you’re not wrong, but why not do it if you’re going to review anyway? Otherwise, what’s the point of “best of” lists?
Well, the point of such lists, as well as any testing, should in theory be about judging products on being fit for purpose. What specific metrics you choose, how you weight them and how they are presented are all critically important. Especially if what you search for is not strictly the best possible performance and instead want a product that strikes a good balance between its various functional aspects as well as price.
For coolers you typically see them arranged mostly by temperature they reach under power virus workloads. Which IMHO is just fucking useless in light of how modern CPUs behave. Such metric will struggle in differentiating between multiple coolers that technically cause some thermal throttling as it doesn’t account for how much they actually throttle.
On the other end you have the option to just ignore temperature and instead measure performance impacts on actual workloads. Which is far more relevant to actual use cases and it allows for good differentiation between non-overkill coolers. But the cooler makers might not like that when it shows no difference between a $50 and $300 cooling solution.
That’s fair, I do think modern testing for coolers do need some kind of overhaul in terms of what metrics are prioritized.
Indeed. Current testing that measures just the temperature is basically the same as 20 years ago - when we had recent innovations like CPU shutting down the system when overheated instead of just frying itself. For the longest time when thermal throttling was introduced it was also very rudimentary - basically a binary situation between 100% performance or going down to like 25% when overheated with nothing in-between.
With modern CPUs pushing tons of extra watts for sake of marginal performance gains as well as precisely surfing the line of extracting vast majority of possible performance in given conditions it’s just terribly inadequate.