AMD James Prior Sheds Light on Threadripper Dummy Dies
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Dragonstongue
just because there is no connections, does not mean it wasnt EPYC with laser cut to disable, not the first time any cpu/gpu have done exactly this LOL.....he is basically just saying "cannot enable the 2 dies because they have been disabled/cut" shame they couldnt optimize a hair further to pick the best of the dies of the 4 available for lowest leakage/highest speed possible and use that extra space for embedded vapor chamber or something along those lines as they are anything but low cost parts, seems a bunch of wasted space for a wonking huge cpu to me ^.^
fry178
@Dragonstongue.
ZERO difference.
If "your" dead, it doesn't matter if it was of old age/accident or anything else, as end result is still the same...
"you" only disable cores etc if market demand is high AND you have good yields.
dont see this with zen, as they started releasing the lower core (amount) cpus first,
as to gain stock on hand for TR or maybe even 1xC on X370
RmVA
So the threadripper-dummy is dead?
RIP
JamesSneed
Finally, I will sleep better knowing the truth.
D3M1G0D
Just as I had thought. AMD called them dummy dies to make it clear that there was no way to activate them.
airbud7
I think I just shed a tear...all those cores will never have a future...sad 🙁
schmidtbag
Just as I said before: they're functionally dummies or blanks. I really don't understand why everyone got their panties caught up in a knot about something so petty. James didn't need to come out and state something so obvious. It really makes no difference if they use defective dies or legitimately transistor-less dies.
But hypothetically, let's say these dies were in fact wired in a way where you could in theory unlock them and use them. Do people really have no clue how improbable that is? To my knowledge, you can't stick an Epyc in a TR motherboard, so even if it had core unlocking, the additional cores couldn't be used anyway. Remember, the BIOS needs to be able to know how to use whatever CPU you put in it. I'm not sure Epyc boards support TR either, but for argument's sake let's say they can. We all know Epyc is for servers and heavy-duty workstations, where motherboard manufacturers (regardless of permission) would never offer core unlocking; you're lucky to find such a board that offers overclocking. But assuming one did, these boards are even more expensive than the already pricey TR boards. You really want to pay hundreds of dollars extra for such a gamble? Meanwhile, even if none of the above situations were a problem, keep in mind that AMD's CCX system appears to need symmetrical functioning cores. Remember - these dies were used as dummies because they were deemed too dysfunctional for use. What this means is if you bought the 16-core TR, you would be required to have all disabled cores fully operational. Depending how many (or maybe which) cores are dysfunctional, you might actually end up losing cores that were enabled out-of-the-box. And then you have to deal with whatever complicated mess is involved with the memory controllers and PCIe lanes, since each CCX appears to supply their own.
It boggles my mind why anyone has the slightest glimpse of hope that they could ever unlock these two dies, or feels that they're being wasted.
vonSternberg
So what's the point of having those two there, then? Heat dispersion?
schmidtbag
vbetts
Moderator
vonSternberg
Agent-A01
schmidtbag
D3M1G0D
Mr Tran
"Won't be able to activate" doesn't mean "TR4 socket can't run on all-4-die-activated chips".
It might only runs with 4 channels of memory, and the other 2 non-channeled dies have to rely on the 2 channeled memory controller for data feed; therefore, more latencies, but it doesn't matter much for heavily threaded tasks and this what high-core CPUs are meant for.
We won't see full 32-core CPUs for "The Rippers", yes "The Rippers", any time in the next 10 years, no way; but 6-core x4 = 24 and 8-core x3 = 24 are possible if Intel manages to release its 18-cores with all-core boost clock goes beyond 3.0GHz. An 18-core monolithic CPU could be as big as a Vega chip, no joke. It is gonna be hard to harvest good chips that clock well.
NewTRUMP Order
So if the the dies are dead whytf is the damn cpu so freaking big then? They couldn't design a cpu with two working dies without making it just smaller than a cell phone? Or was this planned to waste as much space as possible on a new platform, to insinuate bigger cpu equals bigger output? Also going down this path of reasoning when ZEN 2 comes out will that cpu be even bigger than the TR to insinuate even more power? The explanation that it creates an even cooling area is blsheet. A smaller cpu would ensure even cooling. AMD is now using smoke and mirrors, what's next, pull a 32core 64 thread cpu out of a top hat? Don't get me wrong, I'm still buying Ryzen. But I don't like where AMD is going on pr.
fry178
So your saying you would pay more if the die was smaller??
Lol..
Lane
schmidtbag
EspHack
maybe they did it to let intel feel good about their 18 core cpu, so now intel is hopefully set on 18 core max for x299 and whatever comes next in the next year while amd is free to unleash a 24-32c part, but I also wonder if they are not wired because they are meant to be dead or because the x399 chipset isnt wired for the extra dies at all