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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.
GTA 6 will arrive in 2024 (according to a Microsoft document) - 11/28/2022 10:13 AM
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Intel Core i9-13900K is 11% faster than the Ryzen 9 7950X according to leaked photos - 10/20/2022 08:52 AM
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%...
SSDs Are More Reliable Than Hard Drives, According to Data from Backblaze - 09/14/2022 08:40 AM
Backblaze's new SSD report for Q2 2022 shows the lifespan of its SSD boot disks powering its backup servers since 2018. Backblaze's latest upgrade proves SSDs' reliability over hard disks....
According to rumors, RTX 3060 8GB and RTX 3060 Ti with GDDR6X towards the end of October. - 09/12/2022 08:16 AM
At the end of October, Nvidia may introduce two new GeForce RTX 30 video cards. The GeForce RTX 3060 and RTX 3060 Ti will see additional variations....
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. ...
Undying
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#6096622 Posted on: 01/26/2023 12:16 AM
well i wasn't talking about frequency differences making the "speed" difference, if that is what you were asking... I meant the extra 3D cache speeding up processes/programs running on one CCD more than the other CCD. Assuming both CCDs run at same frequency. I was not aware the non-cache CCD could be run at higher frequencies now though... that makes things more complicated to figure out - will be almost impossible for any large application to know where it should run best then - very difficult job for Windows scheduler.
No idea what "your conclusion is specious" means?!?
Thats why you get 7800x3d with one v-cached ccd.
well i wasn't talking about frequency differences making the "speed" difference, if that is what you were asking... I meant the extra 3D cache speeding up processes/programs running on one CCD more than the other CCD. Assuming both CCDs run at same frequency. I was not aware the non-cache CCD could be run at higher frequencies now though... that makes things more complicated to figure out - will be almost impossible for any large application to know where it should run best then - very difficult job for Windows scheduler.
No idea what "your conclusion is specious" means?!?
Thats why you get 7800x3d with one v-cached ccd.
user1
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Posts: 2481
Joined: 2016-01-29
#6096638 Posted on: 01/26/2023 01:38 AM
well i wasn't talking about frequency differences making the "speed" difference, if that is what you were asking... I meant the extra 3D cache speeding up processes/programs running on one CCD more than the other CCD. Assuming both CCDs run at same frequency. I was not aware the non-cache CCD could be run at higher frequencies now though... that makes things more complicated to figure out - will be almost impossible for any large application to know where it should run best then - very difficult job for Windows scheduler.
No idea what "your conclusion is specious" means?!?
its really not that complicated the easy solution is a whitelist, also zen 3/4 provides a bunch of profiling abilities for tuning your workload, which do not require root permissions (administrator mode/ring0) so its possible they could use some heuristics from the cpu to dynamically decide which ccd to run an application on.
(link for those interested in amd's profiling software https://www.amd.com/en/developer/uprof.html )
well i wasn't talking about frequency differences making the "speed" difference, if that is what you were asking... I meant the extra 3D cache speeding up processes/programs running on one CCD more than the other CCD. Assuming both CCDs run at same frequency. I was not aware the non-cache CCD could be run at higher frequencies now though... that makes things more complicated to figure out - will be almost impossible for any large application to know where it should run best then - very difficult job for Windows scheduler.
No idea what "your conclusion is specious" means?!?
its really not that complicated the easy solution is a whitelist, also zen 3/4 provides a bunch of profiling abilities for tuning your workload, which do not require root permissions (administrator mode/ring0) so its possible they could use some heuristics from the cpu to dynamically decide which ccd to run an application on.
(link for those interested in amd's profiling software https://www.amd.com/en/developer/uprof.html )
Astyanax
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Posts: 15718
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#6096681 Posted on: 01/26/2023 08:56 AM
not accurate afaik.
what documentation do you have on different frequencies on differing CCD's?
your conclusion is specious regarding (cache-less) CCD's vs. cached CCD's as there are no frequency limitations created by the cache, especially now the cache has it's own regulated power supply heat throttling is a non-issue.
Everything they said is correct.
not accurate afaik.
what documentation do you have on different frequencies on differing CCD's?
your conclusion is specious regarding (cache-less) CCD's vs. cached CCD's as there are no frequency limitations created by the cache, especially now the cache has it's own regulated power supply heat throttling is a non-issue.
Everything they said is correct.
geogan
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Posts: 1190
Joined: 2010-01-04
#6096751 Posted on: 01/26/2023 01:11 PM
its really not that complicated the easy solution is a whitelist, also zen 3/4 provides a bunch of profiling abilities for tuning your workload, which do not require root permissions (administrator mode/ring0) so its possible they could use some heuristics from the cpu to dynamically decide which ccd to run an application on.
(link for those interested in amd's profiling software https://www.amd.com/en/developer/uprof.html )
Yes it does appear this would be only way... every program would just have to be tested on both CCDs and see which runs faster for that particular "operation". And then marked somehow to always run on faster CCD in future automatically. Messy. Any non-profiles apps would basically just be run randomly. eg. say a Futuremark 3DMark program and benchmark run was not profiled... then it could randomly run on CacheCCD or NonCacheCCD... and get two completely different results for benchmark, one probably much faster than the other. Same with loads of other GPU + CPU intensive "mixed" apps like most games. Also would this be user settable or automatic in OS so no user control? Since this is a very niche CPU there probably wouldn't be much effort to get it right.
its really not that complicated the easy solution is a whitelist, also zen 3/4 provides a bunch of profiling abilities for tuning your workload, which do not require root permissions (administrator mode/ring0) so its possible they could use some heuristics from the cpu to dynamically decide which ccd to run an application on.
(link for those interested in amd's profiling software https://www.amd.com/en/developer/uprof.html )
Yes it does appear this would be only way... every program would just have to be tested on both CCDs and see which runs faster for that particular "operation". And then marked somehow to always run on faster CCD in future automatically. Messy. Any non-profiles apps would basically just be run randomly. eg. say a Futuremark 3DMark program and benchmark run was not profiled... then it could randomly run on CacheCCD or NonCacheCCD... and get two completely different results for benchmark, one probably much faster than the other. Same with loads of other GPU + CPU intensive "mixed" apps like most games. Also would this be user settable or automatic in OS so no user control? Since this is a very niche CPU there probably wouldn't be much effort to get it right.
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well i wasn't talking about frequency differences making the "speed" difference, if that is what you were asking... I meant the extra 3D cache speeding up processes/programs running on one CCD more than the other CCD. Assuming both CCDs run at same frequency. I was not aware the non-cache CCD could be run at higher frequencies now though... that makes things more complicated to figure out - will be almost impossible for any large application to know where it should run best then - impossible job for Windows scheduler.
No idea what "your conclusion is specious" means?!?
AMD is working with MS on this very issue. Same growing pains from several years ago. Could also be part of the delay in releasing this cpu.