Or could it be that AMD wants to not be stuck with any of these high margin yet narrow market CPUs that they can't shift without taking a loss when the next generation version…
The HEDT market is rapidly shrinking because the HEDT use-case itself is rapidly shrinking.
There are very few workloads that both benefit from more than the (already excessive, but that cat isn't going back in the bag again) number of cores that current desktop CPUs possess, but simultaneously do not scale enough to benefit from the number of cores that GPGPU offers, and simultaneously need to run locally rather than remotely on a shard of a hyperscale compute provider.
In certain situations sure, but there aren't that many use cases where a problem is embarrassingly parallel. The only one off the top of my head that a given consumer would have any interest in is video editing or non-realtime 3D rendering. Maybe super high resolution photo editing can fall into that as well. Everything else hit its diminishing returns because the problem can't be parallelized further and/or there were already a plethora of optimizations done in the pipeline.This makes sense to me. HEDT is getting squeezed between a much more capable mainstream desktop and cloud-based solutions. Software to use the power is always running behind the hardware.
It is already available "as an option" if you count Z/X chipset PCIe lanes: Alder Lake has 20 on-CPU PCIe lane (+8 for the chipset link) and the Z690 chipset adds up to 28 for a maximum possible total of 48.I'm still hoping for more PCIe lanes... 16/20 is just not enough. 32/36 should at least be an available option.
That's not really the case here in Europe, it didn't go out of stock all of 2022 so far; didn't look in 2021. Retailer stock is quite good and it's actually currently even slightly less expensive than the 12900K. As always, it depends where you live.Or could it be that AMD wants to not be stuck with any of these high margin yet narrow market CPUs that they can't shift without taking a loss when the next generation version featuring DDR5 and PCIe 5, among other things, come to market?
It's the same thing we see with the 5950X. Retailers are struggling to keep it in stock, with it having gone out of stock for at least a week at Newegg, Amazon, and B&H concurrently not long ago (still out of stock at B&H and BestBuy), and AMD has not reduced pricing on it, with them happy to still charge $800 for it on their storefront even though it's a year and half old.
Yes it sucks, yes the customer loses, and yes I hate AMD for doing it and hope their stock price crashes, but it's a logical business decision.
That's funny considering the first processor considered to be a High End Desktop one was AMD's FX-51.HEDT was created due to artificial market segmentation by Intel.
I wouldn't call that artificial or virtual market segmentation. The design characteristics between mobile and desktop processors are different. One is designed to be as efficient as possible because its target market is going to be on something battery based. The other throws that out the window for performance. However that does not preclude that neither can end up in the other's market. For instance, just as you mention that mobile parts are in desktop computers, desktop parts can be in mobile computers. You just have to understand the pros and cons of throwing something that wasn't particularly designed for that system.Another virtual market segmentation is between "mobile" and "desktop". Last two years all the desktop PCs that I bought use a mobile CPU in the NUC format. They cost half the price and you dont have to waste money on to 15" displays, if you can have 2 or 3 displays with 30" on your desktop.
How many people have actual need for those extra PCIe lanes though? The motherboard chipset makes 16 additional lanes available as well, albeit with the connection to the CPU limited to x4. So a standard Ryzen 3000 or 5000 desktop processor on an x570 motherboard will provide 20 lanes direct from the CPU, plus another 4 lanes that get split into 16 by the chipset to provide flexible connectivity options. But these are 4.0 lanes, so each provides double the bandwidth of a 3.0 lane, and can be split accordingly. I don't see that many use-cases today where the number of lanes would be a significant restriction. If someone were in fact spending "tens of thousands of dollars" for access to more lanes, I would hope they would have enough of a professional need for that extra connectivity that it would pay for itself over time.The mainstream CPUs are not challenging the HEDT CPUs!
HEDT comes with loads more PCIe lanes and often that is the deciding factor.
Indeed, the only reason I buy HEDT is because of the extremely low number of PCIe lanes on mainstream CPUs. If they came with 28+ lanes I'd never have bought HEDT, which might have saved me 10's of thousands of Adollars.
Are they though? Has Intel been providing a competing product with comparable specs and pricing? If not, then they are apparently even less interested in selling you their product. : PI get that it’s a small market, but between the scalper pricing and then AMD staying they’ll only be making the Pro versions going forward, and only provifing them to OEMs leaves a really bad taste in my mouth and makes me unlikely to consider AMD in the future. Not an Intel fanboy by any means, but at least they’re actually interested in selling me their products.
It is already available "as an option" if you count Z/X chipset PCIe lanes: Alder Lake has 20 on-CPU PCIe lane (+8 for the chipset link) and the Z690 chipset adds up to 28 for a maximum possible total of 48.
While fair, that only really matters if every device is trying to hammer RAM or one of the other CPU connected devices with data.Personally, if it's constrained to the CPU by an 8x link, I count it as an 8x link. So the 28 are pretty wasted from the chipset if you need CPU access for those 28 lanes. I would still get the 1900x is they would make a similar one for the newest parts.
The 4.0x8 chipset link to the CPU is of no material consequence since you need to simultaneously slam multiple devices for 14+GB/s aggregate in either direction for it to become an issue which hardly ever happens in desktop scenarios.Personally, if it's constrained to the CPU by an 8x link, I count it as an 8x link. So the 28 are pretty wasted from the chipset if you need CPU access for those 28 lanes. I would still get the 1900x is they would make a similar one for the newest parts.
The only use-case I can think of is an NVMe NAS with 50+Gbps LAN trunk.Do you have a use case where, I dunno, a dozen USB drives, a handful of SATA drives, and maybe 2-3 NVMe drives are all trying to hammer the system at once?