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For those who just read the title: the "fuse" doesn't stop the cpu from working, it's just a flag for AMD support to know that the chip has been overclocked and this might invalidate the warranty.
To me this is actually a reasonable thing for AMD to do. It still leaves me free to do whatever I want with my property.
For those who just read the title: the "fuse" doesn't stop the cpu from working, it's just a flag for AMD support to know that the chip has been overclocked and this might invalidate the warranty.
https://www.servethehome.com/amd-psb-vendor-locks-epyc-cpus-...
I don't know if overclocking pays off much these days. The chips are already taken close to limits with factory settings, so there's not much overclocking potential unless you use extreme cooling. I fondly remember the Core 2 Duo days when I overclocked my CPU with more than 50% using the stock cooler. It's nice to 50% performance for free, particularly when you are poor. I even remember overclocking an old laptop wi…
I don't know if overclocking pays off much these days. The chips are already taken close to limits with factory settings, so there's not much overclocking potential unless you use extreme cooling. I fondly remember the Core 2 Duo days when I overclocked my CPU with more than 50% using the stock cooler. It's nice to 50% performance for free, particularly when you are poor. I even remember overclocking an old laptop wi…
But also, whether a chip is actually stable at settings X or Y has become a lot harder to determine due to complexity: multicore architectures, frequency scaling and power management in general make it hard to predict how a chip will behave under real conditions. It has become unrealistic for a user to test all cores under all possible combinations of workloads. Consequently, and from anecdotal experience at least, many overclocked systems seem a lot less stable than their owners claim.
I don't know if overclocking pays off much these days. The chips are already taken close to limits with factory settings, so there's not much overclocking potential unless you use extreme cooling. I fondly remember the Core 2 Duo days when I overclocked my CPU with more than 50% using the stock cooler. It's nice to 50% performance for free, particularly when you are poor. I even remember overclocking an old laptop wi…
The undervolting makes the chip run cooler, which in turn means it can stay at higher frequencies longer.
There are so many other dominating factors that it is almost pointless to worry about per core frequency.
Memory bandwidth is probably a bigger constraint for many practical applications. Faster core clocks doesn't do anything to resolve that.