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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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Horus-Anhur
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#6095996 Posted on: 01/24/2023 11:47 AM
This is a good decision. And I wish they made some AGESA that would also unlock clock speeds for the 5800X3D.
With PBO-30, my 5800X3D has a somewhat low power usage and temperatures, so it could go a couple 100Mhz higher, if it wasn't locked.
This is a good decision. And I wish they made some AGESA that would also unlock clock speeds for the 5800X3D.
With PBO-30, my 5800X3D has a somewhat low power usage and temperatures, so it could go a couple 100Mhz higher, if it wasn't locked.
pegasus1
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Posts: 2763
Joined: 2012-11-06
#6096001 Posted on: 01/24/2023 12:02 PM
This is a good decision. And I wish they made some AGESA that would also unlock clock speeds for the 5800X3D.
With PBO-30, my 5800X3D has a somewhat low power usage and temperatures, so it could go a couple 100Mhz higher, if it wasn't locked.
Agreed but nobody wants to hear their 5800X3D go 'POP' just for another 100mhz.
Its been a significant jump in game for me over the 3800X, and also a jump in video encoding even though both hit around the same frequency.
This is a good decision. And I wish they made some AGESA that would also unlock clock speeds for the 5800X3D.
With PBO-30, my 5800X3D has a somewhat low power usage and temperatures, so it could go a couple 100Mhz higher, if it wasn't locked.
Agreed but nobody wants to hear their 5800X3D go 'POP' just for another 100mhz.
Its been a significant jump in game for me over the 3800X, and also a jump in video encoding even though both hit around the same frequency.
Horus-Anhur
Senior Member
Posts: 5915
Joined: 2013-02-05
Senior Member
Posts: 5915
Joined: 2013-02-05
#6096002 Posted on: 01/24/2023 12:03 PM
Agreed but nobody wants to hear their 5800X3D go 'POP' just for another 100mhz.
Its been a significant jump in game for me over the 3800X, and also a jump in video encoding even though both hit around the same frequency.
These CPUs have thermal protection. So even if a user were to set a clock speed too high, it would just start throttling down.
Agreed but nobody wants to hear their 5800X3D go 'POP' just for another 100mhz.
Its been a significant jump in game for me over the 3800X, and also a jump in video encoding even though both hit around the same frequency.
These CPUs have thermal protection. So even if a user were to set a clock speed too high, it would just start throttling down.
pegasus1
Senior Member
Posts: 2763
Joined: 2012-11-06
Senior Member
Posts: 2763
Joined: 2012-11-06
#6096003 Posted on: 01/24/2023 12:09 PM
It would be the voltages i am concerned about. Maybe they locked the 5800X3D as it would have scuppered the 7 series launch more than it has done already, or maybe it really was due to needing t0 protect the circuitry. I run -30 and have great temps and yeah would like to see what i could push it to, maybe they will unlock in the future.
These CPUs have thermal protection. So even if a user were to set a clock speed too high, it would just start throttling down.
It would be the voltages i am concerned about. Maybe they locked the 5800X3D as it would have scuppered the 7 series launch more than it has done already, or maybe it really was due to needing t0 protect the circuitry. I run -30 and have great temps and yeah would like to see what i could push it to, maybe they will unlock in the future.
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Kind of weird actually, considering the problems with the 5800X3D was the thermals and the effect on the cache? Ryzen 7000 runs loads hotter, so I wonder what magical things they did to make it work properly.
Also I guess allowing for OC is free - doesn't mean there's going to be any meaningful performance to be had from it.