Tuesday, October 29th 2024

De-Lidded Ryzen 7 9800X3D Pic Confirms 3D V-cache Die Moved Below the CCD

by
btarunr
 Discuss (32 Comments)
The upcoming AMD Ryzen 7 9800X3D processor is already in the hands of hardware modders, who have put the chip through de-lidding (removal of the integrated heatspreader or IHS), revealing what's underneath. In the 9800X3D de-lidded picture, the CCD appears plain, with no apparent L3D on top, unlike on the 7800X3D (second picture, below). We'd been hearing reports that with the 9000X3D series, AMD has redesigned the way the 3D V-cache die (L3D) and the CPU complex die (CCD) are stacked together, by inverting their arrangement, such that the CCD is on top, and the L3D below.

In past generations of X3D processors, such as the 7800X3D and the 5800X3D, the L3D is stacked on top of the CCD, with structural silicon handling the crucial task of transferring heat from the CPU cores to the IHS. This inversion in stacking should ensure better thermals for the CPU cores, the 9800X3D boosting behavior should be similar to that of non-X3D chips, such as the 9700X. AMD has given the 9800X3D a 120 W TDP and 5.20 GHz boost frequency. This inversion of the CCD and L3D stacking is probably what is behind the "X3D Reimagined" teaser blurb by AMD.
Source: Wccftech

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32 Comments on De-Lidded Ryzen 7 9800X3D Pic Confirms 3D V-cache Die Moved Below the CCD

#26
AusWolf
kondaminHow about giving us the benchmarks already if you are going this far.
That's probably still under embargo.
Posted on Reply
#27
AnotherReader
tabascosauzI guess that solves the thermal limitations once and for all.

Dunno about Vcore though (which the N5 regular CCDs relied on to max boost clock), still need to find a way to decouple Vcore from cache voltage to enable the same on X3D? 5.2GHz is hardly a huge bump like some sources have been describing.
Adding a new voltage domain for the L3 would increase L3 latency due to the latency penalty for crossing voltage and clock domains. Consider Golden Cove which has much higher latencies for the L3 than the various Zen cores.

Posted on Reply
#28
igormp
tabascosauzMy point is that there's been a lot of talk about "significantly increased clock speeds", so that might have to happen to enable X3D to eventually catch up to the rest of the lineup. Not currently on 7800X3D.

Intel's new DLVR enables per-Pcore and per-cluster Ecore voltage, as well as separate L3. Who knows if AMD will go the same way.

Another annoyinig thing on the current X3D chips with dual CCDs is that it's the same voltage rail for both CCDs, meaning that if both are in use, the non-x3D one ends up with less voltage due to the hard cap of the X3D-CCD, limiting its clocks.
Posted on Reply
#29
Steevo
azraelMaybe he should change his name to Der Del!dder. Better than calling yourself "the farmer". :p
I work in Ag, being a farmer these days is not a low brow job, using machine automation that is also used in the ICBMs, so much technology that is added and can be added to older machines.


Also I used to farm up some great numbers in PVP shooters.
Posted on Reply
#30
azrael
SteevoI work in Ag, being a farmer these days is not a low brow job, using machine automation that is also used in the ICBMs, so much technology that is added and can be added to older machines.


Also I used to farm up some great numbers in PVP shooters.
I didn't mean my comment in a disrespectful way. It's more a stab at the sometimes poor grasp of the English language by Germans (btw, I am one, by birth :)). "Bauer" is the direct translation of "builder". Problem is, a "Bauer" isn't a builder, but a farmer.

Kudos for being in agriculture! You're one of the people putting food on our tables. Also, high-brow jobs are overrated.
Posted on Reply
#31
Caring1
SL2Did he do it? Is it his pic?

I checked the source and both his channels but can't see anything, what am I missing..

Anyone can buy his delidder.
Der8auer did delid one, he showed it in his latest video, also his recent iteration of the delidding tool which has not been released yet, that heats the solder, unlike previous delidding tools which were mechanical only.
ChomiqRun a thumb comparison and let us know the result:

That's the unreleased version of the delidding tool.
Posted on Reply
#32
tpuuser256
SL2There's no pic of any thumb and a 9000 CPU here anyway lol

I wonder how many 1851 heaters he will sell..


Roman have showed on youtube that it works with 7000/8000/9000.
Good to know, thanks
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