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> and even the performance cores have to be downgraded for it. Old rumours, it's no longer true.
by powturbo 3y ago
> and even the performance cores have to be downgraded for it.
Old rumours, it's no longer true.
- skavi 3y agonot really rumors, but also not necessarily true. the performance cores on consumer intel parts no longer have AVX-512 enabled. This is because it’s tough to implement on the smaller efficiency cores, and scheduling is more annoying with heterogeneous ISAs.
- powturbo 3y agoI understand downgrading as thermal throtlling.
- Aardwolf 3y agoI did mean have the feature removed, I edited the comment (replaced "downgraded" with "have this feature removed". I actually originally typed "crippled" but wanted to phrase it more mildly). What I mean is to avoid the heterogeneous cores they chose to disable it in the performance cores rather than e.g. emulate or double pump it in the efficiency cores. And they chose to give you efficiency cores + performance cores without avx512 on all consumer CPU's, rather than, what would be my preference, sell some with only performance cores with avx512 like their previous gen CPUs. I'd be ok with efficiency cores on a laptop, sure, but not on a desktop machine. But AMD already gives plenty fast cores with avx512 now so I'm satisfied, I'm simply not an intel user anymore. Of course intel's choice still affects me anyway since the less consumers have avx512, the less software will make use of it.