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Intel is Now Fusing Off AVX-512 support in Alder Lake CPUs

TheLostSwede

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If you have already bought a 12th gen Intel Alder Lake CPU, you could be sitting on a collectors item, as according to Tom's Hardware, Intel is now fusing off AVX-512 support in production. It's possible this could be in preparation for the arrival of the Core "W" series of CPUs that might be replacing the Xeon-W series of processors for Intel. It should be noted that this isn't a rumour, as Tom's Hardware has had an official statement on the matter from Intel.

The statement reads, "Although AVX-512 was not fuse-disabled on certain early Alder Lake desktop products, Intel plans to fuse off AVX-512 on Alder Lake products going forward." As to exactly when this will go into full effect isn't clear, but according to Tom's Hardware, they've already had reports of batches of non-K Alder Lake CPUs that are lacking AVX-512 support. In all fairness to Intel, the company never claimed that its Alder Lake CPUs would support AVX-512 and the support has never been guaranteed to be flawless on the chips that have shipped with it enabled. Intel has also disabled AVX-512 via a microcode update that shipped to motherboard makers in January, but at least some motherboard makers have added a toggle to allow people to re-enable AVX-512 support. It's unlikely that this will affect many potential customers, since AVX-512 instructions aren't widely used in consumer facing software.



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They're doing what they said they were doing all along because vendors reckoned Intel were telling porkies and called their bluff correctly.

Perhaps next time don't be so lazy, Intel. You should have known better....
 

bug

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We don't need AVX-512 on the desktop, that matter has been settled. The real question is why did Intel think it was wise to waste die area on AVX-512.
 

Space Lynx

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We don't need AVX-512 on the desktop, that matter has been settled. The real question is why did Intel think it was wise to waste die area on AVX-512.

I guess when your CEO travels the world spamming troll comments the engineers get distracted?


all it took was an influx of socialist tax payer money in a capitalist free market economy to make it happen... neat lol

 
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come on Intel.... its just those pesky E core screwing up, if you are really mad can you at least not fuse those P core only ADL parts?
 
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We don't need AVX-512 on the desktop, that matter has been settled. The real question is why did Intel think it was wise to waste die area on AVX-512.
Settled by who?

AVX-512 is great for math.
 
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the segmentation shit all over again
 
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Only to re-introduce them on their new initiative - CPU DLCs...
 
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Settled by who?

AVX-512 is great for math.
You'd likely not use mainstream consumer processors if you really need it that much. Plus AVX-512 was not advertised as supported, so why would you buy something that doesn't have the feature you're looking for?
 
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Hi,
Fusing off or is it phasing out ?
 

TheLostSwede

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Hi,
Fusing off or is it phasing out ?
They're clearly not phasing anything out, they just don't want you to have something without paying for it...
 
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Hi,
Thought you and I suppose Tom... used an interesting term "fused off"

Is there an actual fuse that controls 512 ?
 
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Hi,
Thought you and I suppose Tom... used an interesting term "fused off"

Is there an actual fuse that controls 512 ?

I always envisioned a laser that fuses things, and they will use said laser to cut off the connections to the AVX 512 circuits. That's probably not at all what happens but that's the mental image I get when hearing "Fusing off".
 
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Hi,
Yep the term is whack lol

I can't stand Toms... since they added jwplayer nonsense.
 

bug

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Hi,
Thought you and I suppose Tom... used an interesting term "fused off"

Is there an actual fuse that controls 512 ?
Wiki says it better than I would: https://en.wikipedia.org/wiki/Fuse_(electrical)

Idk if it's an actual fuse, but it's something that controls power delivery to every component in a chip. When you set it to deliver 0 forever, it becomes an off fuse.
 
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Hi,
Yeah like the sacrificial device reference typical meaning :cool:
 

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Hi,
Thought you and I suppose Tom... used an interesting term "fused off"

Is there an actual fuse that controls 512 ?
It's the general term used in the industry.
As pointed out, it's pretty much a laser that cuts certain bits of the die to prevent the parts that connects to the rest of the chip from working.

Wiki says it better than I would: https://en.wikipedia.org/wiki/Fuse_(electrical)

Idk if it's an actual fuse, but it's something that controls power delivery to every component in a chip. When you set it to deliver 0 forever, it becomes an off fuse.
That would be an eFuse, which is different.
This isn't a fuse, this is something being severed permanetly.
 
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Hi,
Fusing off is a little more correct than fused off seeing fused off is a past tense and they have yet to do it.

But ultimately phasing out is best.
 

bug

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That would be an eFuse, which is different.
This isn't a fuse, this is something being severed permanetly.
Well, when a fuse is blown, it's also blown permanently. As I said, a fuse it's not exactly how it's implemented, but that's the principle at work.
Hi,
Fusing off is a little more correct than fused off seeing fused off is a past tense and they have yet to do it.

But ultimately phasing out is best.
Fused is not the past tense here, it's the participle. Same thing as in "sawed-off shotgun" construct.
 
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We don't need AVX-512 on the desktop, that matter has been settled. The real question is why did Intel think it was wise to waste die area on AVX-512.
I actually have uses for it, so perhaps speak for yourself?
 

bug

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I actually have uses for it, so perhaps speak for yourself?
On the desktop? For what? Office? Web Surfing? Games?
 
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Glad i still have the option for it on my 12700k
 
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