Some lovely fascinating admissions have been made in regards to the 9800X3D’s 3-D cache
Up to date: Dec 5, 2024 12:07 pm
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As we state in our review, the 9800X3D is one in all AMD’s greatest successes. Normally, I’d be tempted to mention the greatest, however I think the 5800X3D from Zen 3 merits that identify. With out it, there almost definitely wouldn’t be a 9800X3D initially. We just lately performed an interview with a key AMD worker following the new luck of the 9000 sequence release (as rocky because it was once firstly).
We spoke to Martjin Boonstra (trade construction and product supervisor at AMD) about the newest trends within AMD. He was once lovely tight-lipped about what the longer term holds for the corporate and its upcoming tech (as anticipated, however you need to ask), however something that me a great deal was once what was once stated in regards to the 9800X3D and the location of its 3D cache die.
Transferring the 3-D V-cache die was once a actually just right thought
It’s possible you’ll know the fine details of the structural adjustments that the 9800XD underwent in comparison to its predecessors, however for those who don’t, right here’s a handy guide a rough rundown from Martjin:
“So with out changing into too technical, I might say for this model of 2d technology 3-D V-cache, we’ve additionally gotten rid of the structural die that’s mainly had to replenish the adaptation between the lateral, , placement of the money on best of the CCD at the earlier technology.“
“We’ve now prolonged the 3-D V-cache to the entire dimension of the CCD and put that underneath the CCD, so there may be much less structural die required. In order that approach additionally higher warmth dissipation as a result of then you definately’ll have extra lateral warmth dissipation as a substitute of vertical.”
Martjin Boonstra
Necessarily, the 7800X3D’s 3-D V-cache die was once put on best of the CCD, with supporting silicon on the edges of the die to make it the similar dimension because the Core Advanced Die so the CPU may well be assembled. This created an insulating barrier at each and every finish, hindering the warmth dissipation doable.
On the other hand, at the 9800X3D, the cache die was once made the similar dimension because the CCD and relocated below the CCD in direct touch with the CPU substrate, which is helping the cache die to stick cooler – as it’s each better and non-insulated.
This isn’t information to us, as this structural alternate was once recognized in a while after the CPU was once passed to reviewers. What me is what Martjin needed to say about warmth dissipation immediately.
AMD unearths that the most important factor on prior X3D chips
The purpose that me essentially the most was once what Martjin regarded as the “greatest factor” with X3D chips. He stated:
“However general, I’d say with transferring the 3-D V-cache underneath the CCD that tackled the most important factor, which was once warmth dissipation after which clearly enabling overclocking as properly.“
Martjin Boonstra
This can be a large admission from AMD, even though it appears to be like minute or obtrusive. With warmth dissipation problems out of the way in which, AMD can additional outline its 3-D V-cache gadget and (at some point) perhaps finally end up with X3D chips that behave identical to common CPUs (handiest quicker for gaming).
The 9800X3D has overclocking enabled, and its features are on par with usual fashions. On the other hand, it’s a lot more uncomplicated to make use of PBO, because the characteristic is lovely well-tuned to extend efficiency routinely.
The 9800X3D nonetheless doesn’t relatively fit the inventory clock speeds of its non-X3D opposite numbers, however this is able to really well be every other potency play (AMD went lovely onerous on that with the new Ryzen 9000 liberate). Having stated that, the 9800X3D is permitted to drink a little bit extra energy than the 7800X3D, which has so much to do with its wins over its predecessor. It’s no longer relatively as ‘energy capped’ for lack of a higher made-up time period.
What does this imply for the way forward for AMD CPUs?
Clearly, Martjin wasn’t about to provide away the secrets and techniques of AMD’s long run, however not anything is preventing us from speculating. Initially, will all AMD CPUs in the end have 3-D V-cache? Regardless that it’s not going, we will’t rule it out. AMD will most probably stay the usual and X3D fashions separate to attraction to other marketplace spaces.
In the event you don’t care about gaming efficiency, you’ll grasp the 9700X for $325 at this time. It’s an 8-core, 16-thread CPU, identical to the 9800X3D, however you’ll pay $479 for a similar configuration with the inclusion of the X3D cache. If all CPUs integrated the cache, it’d most probably pressure up the associated fee, which is just about towards what AMD has attempted to succeed in for a very long time: large efficiency, little cash.
Instead of that, we are hoping to look X3D CPUs with the similar or possibly higher clock speeds than the usual fashions. The longer term may grasp non-multithreaded CPUs to keep potency, and AMD is taking a look to show up the clock speeds of long run X3D CPUs, very similar to what Intel has achieved with its contemporary Core Extremely sequence CPUs. AMD already has a Turbo Recreation Mode choice that disables SMT, however I don’t assume it’s but at some extent the place it might forgo Simultaneous Multi-threading altogether.
