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According to AMD product pages, the upcoming 7950X3D and 7800X3D are Unlocked for Overclocking.
The AMD Ryzen 9 7950X3D and Ryzen 7 7800X3D Zen 4 processors would be unlocked for overclocking, according to recent a mention on the AMD product pages.
Contrary to what has been shared before, this means that the CPUs will feature an unlocked base-clock multiplier, making overclocking easier than on previous-generation Ryzen 7 5800X3D processors with locked base-clock multipliers. The TDP rating of the 16-core/32-thread 7950X3D and the 8-core/16-thread 7800X3D will be 120 W, which is much lower than the 7950X's 170 W rating. Furthermore, the TJmax value is lower, at 89°C, compared to 95°C for the 7950X and 7700X.
These chips will include stacked 3D vertical cache technology (3DV cache). The 7800X3D will include 64 MB of 3DV cache stacked on top of the 32 MB of on-die L3 cache, bringing the total cache (L2+L3) to 104 MB. The 3DV cache memory on one of the two "Zen 4" CCDs will be available exclusively on the 7950X3D and the 12-core/24-thread 7900X3D. The first CCD will contain 96 MB of L3 cache (including the 3DV cache), while the second will be a normal "Zen 4" CCD with only 32 MB of L3 cache on-die. This means that the L3 cache will be 128 MB for the 7900X3D, and the total cache will be 140 MB for the 7950X3D. AMD has stated that their first CPU with 3D V-Cache, the Ryzen 7 5800X3D, is not overclockable due to the limited voltage that can be safely employed in tandem with the stacked L3 cache.
| AMD Ryzen 7000 Zen4 | Architecture | Cores/Threads | Base /Turbo | L2 + L3 | TDP | iGPU | Price |
|---|---|---|---|---|---|---|---|
| Ryzen 9 7950X3D | Zen 4 | 16/32 | 4.2/5.7 GHz | 16+64+64 MB | 120 W | yes | |
| Ryzen 9 7950X | Zen 4 | 16/32 | 4.5/5.7 GHz | 16+64 MB | 170 W | yes | 849 Euro (699 USD) |
| Ryzen 9 7900X3D | Zen 4 | 12/24 | 4.4/5.6 GHz | 12+64+64 MB | 120 W | yes | |
| Ryzen 9 7900X | Zen 4 | 12/24 | 4.7/5.6 GHz | 12+64 MB | 170 W | yes | 669 Euro (549 USD) |
| Ryzen 7 7800X3D | Zen 4 | 8/16 | 4.x/5.0 GHz | 8+32+64 MB | 120 W | yes | |
| Ryzen 7 5800X3D | Zen 3 | 8/16 | 3.4/4.5 GHz | 4+32+64 MB | 105 W | yes | 489 Euro (449 USD) |
| Ryzen 7 7700X | Zen 4 | 8/16 | 4.5/5.4 GHz | 8+32 MB | 105 W | yes | 479 Euro (399 USD) |
| Ryzen 5 7600X | Zen 4 | 6/12 | 4.7/5.3 GHz | 6+32 MB | 105 W | yes | 359 Euro (299 USD) |
All three processors get a 120W-rated TDP bringing back these processors towards better manageable temperatures. All factors combined can make these processors the most desirable of the year for the gaming end-consumer. The caches are interesting, the Dual-CCD 7900X3D and 7950X3D were demonstrated, with respective total caches of 140 MB and 144 MB. And that means one CCD has a 32 MB L3 cache on-die, and the other is a standard planar CCD.
Currently AMD has altered their product pages to remove this info entirely, implying that the specifications for these chips have not yet been completed.
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During a closed event to introduce the 13th generation of Intel Core CPUs, the firm showed slides demonstrating that the Core i9-13900K outperforms its direct opponent, the Ryzen 9 7950X, by up to 11%...
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According to Asus and Gigabyte, motherboard sales will fall by 25% this year. - 06/29/2022 09:20 AM
Asus and Gigabyte, which together account for 70% of the motherboard market, have warned that they expect sales to drop by around 25% compared to last year. ...
GarrettL
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Joined: 2019-09-09
#6096091 Posted on: 01/24/2023 04:38 PM
That's the issue. Until Microsoft works out it with AMD it's history repeating itself. Initially the 7000x3d scores may not look great at release compared to what it will be in a year.
https://www.hardwaretimes.com/amds-ryzen-9-7900x3d-and-7950x3d-wont-be-faster-than-the-7800x3d-in-most-games-report/
I'd expect cores without 3D cache to be unlocked but not those with it. We'll see how this turns out, but I'm still not a big fan of that hybrid design. I'd vote for full 16core with 3D cache and unlocked OC or at least some kind of HW scheduler, which would miraculously be able to correctly schedule between those 2 CCDs.
That's the issue. Until Microsoft works out it with AMD it's history repeating itself. Initially the 7000x3d scores may not look great at release compared to what it will be in a year.
https://www.hardwaretimes.com/amds-ryzen-9-7900x3d-and-7950x3d-wont-be-faster-than-the-7800x3d-in-most-games-report/
haste
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Joined: 2006-09-30
Senior Member
Posts: 2082
Joined: 2006-09-30
#6096096 Posted on: 01/24/2023 04:47 PM
It would be awesome if AMD came up with a 3DVCache that could be shared between both CCDs, making a form of a bridge. That wouldn't need scheduler (both CCDs would benefit from it) and it could also decrease CCD to CCD latencies. But that is just my wishful thinking and likely lack of knowledge... it's probably not possible.
It would be awesome if AMD came up with a 3DVCache that could be shared between both CCDs, making a form of a bridge. That wouldn't need scheduler (both CCDs would benefit from it) and it could also decrease CCD to CCD latencies. But that is just my wishful thinking and likely lack of knowledge... it's probably not possible.
tunejunky
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Posts: 3046
Joined: 2017-08-18
#6096102 Posted on: 01/24/2023 04:57 PM
you guys are conflating separate issues.
3DCache has zero effect on CCD's, the issue regarding OC is voltage regulation and it has been solved months ago with the launch of Genoa3D.
another - Ryzen is not and has never been a Hybrid Design. it is a MCM which is entirely different. SOME mcm's (Intel) are hybrid, AMD is not.
any latencies between CCD's is so small as to have a minimal effect, as opposed to a massive increase in FPS in real world games for 3dCache, so any worrries about a 7900/7950X3D is misplaced and is just internet chum.
i've had Ryzen's (and TR) top cpu's from 1st, 2nd. and 3rd generation. i'm about to build the fourth gen system.
i've only had issues in gaming with the 1st gen (which i expected), and in the transition to Win 11 - which was more M$'s issue than AMD.
you guys are conflating separate issues.
3DCache has zero effect on CCD's, the issue regarding OC is voltage regulation and it has been solved months ago with the launch of Genoa3D.
another - Ryzen is not and has never been a Hybrid Design. it is a MCM which is entirely different. SOME mcm's (Intel) are hybrid, AMD is not.
any latencies between CCD's is so small as to have a minimal effect, as opposed to a massive increase in FPS in real world games for 3dCache, so any worrries about a 7900/7950X3D is misplaced and is just internet chum.
i've had Ryzen's (and TR) top cpu's from 1st, 2nd. and 3rd generation. i'm about to build the fourth gen system.
i've only had issues in gaming with the 1st gen (which i expected), and in the transition to Win 11 - which was more M$'s issue than AMD.
geogan
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Posts: 1126
Joined: 2010-01-04
Senior Member
Posts: 1126
Joined: 2010-01-04
#6096450 Posted on: 01/25/2023 02:42 PM
you guys are conflating separate issues.
3DCache has zero effect on CCD's, the issue regarding OC is voltage regulation and it has been solved months ago with the launch of Genoa3D.
another - Ryzen is not and has never been a Hybrid Design. it is a MCM which is entirely different. SOME mcm's (Intel) are hybrid, AMD is not.
any latencies between CCD's is so small as to have a minimal effect, as opposed to a massive increase in FPS in real world games for 3dCache, so any worrries about a 7900/7950X3D is misplaced and is just internet chum.
i've had Ryzen's (and TR) top cpu's from 1st, 2nd. and 3rd generation. i'm about to build the fourth gen system.
i've only had issues in gaming with the 1st gen (which i expected), and in the transition to Win 11 - which was more M$'s issue than AMD.
Well I am not sure who you are replying to or what you mean by "3DCache has zero effect on CCD's", but my point still stands... this new 3D cache is only on one of the CCDs of the new dual CCD CPUs like 7950X3D. This means that all 16 cores of this CPU are no longer equal in performance like they were in previous AMD CPUs like the 5950X . You now have 8 faster cores (16 threads) on 3D cache CCD, and 8 slower cores (16 threads) on normal CCD. So there is a big difference there compared to older CPUs. And probably something they don't want buyers of new 3D cache CPUs to know about.
you guys are conflating separate issues.
3DCache has zero effect on CCD's, the issue regarding OC is voltage regulation and it has been solved months ago with the launch of Genoa3D.
another - Ryzen is not and has never been a Hybrid Design. it is a MCM which is entirely different. SOME mcm's (Intel) are hybrid, AMD is not.
any latencies between CCD's is so small as to have a minimal effect, as opposed to a massive increase in FPS in real world games for 3dCache, so any worrries about a 7900/7950X3D is misplaced and is just internet chum.
i've had Ryzen's (and TR) top cpu's from 1st, 2nd. and 3rd generation. i'm about to build the fourth gen system.
i've only had issues in gaming with the 1st gen (which i expected), and in the transition to Win 11 - which was more M$'s issue than AMD.
Well I am not sure who you are replying to or what you mean by "3DCache has zero effect on CCD's", but my point still stands... this new 3D cache is only on one of the CCDs of the new dual CCD CPUs like 7950X3D. This means that all 16 cores of this CPU are no longer equal in performance like they were in previous AMD CPUs like the 5950X . You now have 8 faster cores (16 threads) on 3D cache CCD, and 8 slower cores (16 threads) on normal CCD. So there is a big difference there compared to older CPUs. And probably something they don't want buyers of new 3D cache CPUs to know about.
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I'd expect cores without 3D cache to be unlocked but not those with it. We'll see how this turns out, but I'm still not a big fan of that hybrid design. I'd vote for full 16core with 3D cache and unlocked OC or at least some kind of HW scheduler, which would miraculously be able to correctly schedule between those 2 CCDs.