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Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)

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Thunder 57 said:
Voltages were a problem. I think the 3D chiplet will be limited. Maybe 5.4GHz.
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That is why I said "mostly". But generally thermals were the biggest issue. Voltages were the reason why AMD forbid overclocking on Zen3-Zen4 X3D parts. And while I also think there will be limitations, I think that a frequency increase respect to the previous generation has to be expected.
 
leoneazzurro said:
That is why I said "mostly". But generally thermals were the biggest issue. Voltages were the reason why AMD forbid overclocking on Zen3-Zen4 X3D parts. And while I also think there will be limitations, I think that a frequency increase respect to the previous generation has to be expected.
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No, voltage is definitely the hard ceiling since SoIC bonds tend to kinda do the 12VHPWR thing at high volts lotta current.
 
AMD pointed out that the thermal resistance of the bonding interfaces is a significant part of the overall thermal resistance.

Zen 3 and 4 X3D:
package — thinned core chiplet — hybrid bonding interface — thinned cache chiplet over the cache area, thinned structural chiplet over the cores area — hybrid bonding interface (sort of) — structural chiplet — thermal interface — heat spreader​

Zen 5 X3D:
package — thinned cache chiplet — hybrid bonding interface — core chiplet — thermal interface — heat spreader​

AFAIK.

As for Voltages, at least lower temperatures also allow for slightly lowered V-f curve, in theory. How much though...?
 
gdansk said:
Kraken isn't a rebrand even if it may be pointless outside of a sticker. Phoenix 2 was also not a rebrand nor pointless. It was supposed to be cheaper.

Hawk Point, yeah...
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yeah I know, but as you say, KRK "even if may be pointless" and PHX2 "was supposed to be"

the end result is what matters, as results both are very similar to rebrands or even worse
 
adroc_thurston said:
No, voltage is definitely the hard ceiling since SoIC bonds tend to kinda do the 12VHPWR thing at high volts lotta current.
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Well, in Zen 5, with V-Cache on the bottom, they are passing a lot of current through it. Maybe they have some bigger / thicker TSVs for this purpose.
 
eek2121 said:
*sigh* temporarily out of income and now I need to come up with $3000 for a 5090 + 9950X3D. First world problems I guess. At least the money should begin flowing again soon.
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I hate to break it to you bud, but $3K isnt going to cut it. $699 for X3D + $2600 for scalped 5090 + taxes/VAT, you are looking at $3500 easily. 😕
 
I turned on the MSI PBO "Enhanced Mode 3" and set boost to +200mhz in the bios. It seems to hit that in games without any CO offset, which caused instability with the 7800X3D. Also the idle temps seem much lower, core is now 33C.

I can't figure out what this mode does and there is not much documentation on it, but the lower idle temps alone are a big plus. Higher clocks are good for old games that don't benefit from the vcache or threads.
 
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Very interesting quotes here in this article, related to V-Cache processors:

Put simply, AMD simply didn’t anticipate the disparity between its own product and Intel’s. “Put it this way,” AMD’s Azor said. “We knew we built a great part. We didn’t know the competitor had built such a horrible one. So the demand has been a little bit higher than we had originally forecasted.”

McAfee went even further: “What I can say is that we have been ramping our manufacturing capacity — the monthly, quarterly output of X3D parts. That’s 7000X3D as well as 9000X3D. It’s crazy how much we have increased over what we were planning. I will say that the demand that we have seen from 9800X3D and 7800X3D has been unprecedented.”
techtelegraph.co.uk

AMD blames HX3D chip shortages on Intel's crappy chips

AMD’s world-beating 9800X3D chips destroyed the competition and promptly sold out. Why? David McAfee, AMD’s corporate vice president and general manager of its Client Channel Business, and Frank Azor, the chief architect of gaming solutions and gaming marketing at AMD, sat down with reporters to...
techtelegraph.co.uk techtelegraph.co.uk
 
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