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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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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. ...
Dribble
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Posts: 331
Joined: 2019-01-18
Senior Member
Posts: 331
Joined: 2019-01-18
#6097249 Posted on: 01/27/2023 06:35 PM
Remember when people said Dual Core CPUs would never work efficiently, this wont even be a problem.
if the Ukrainians can work out how to operate US HARM missles from their Mig 29's, im sure the brains at AMD and MS can work this out.
It's a question of incentive - every cpu was going to be multi-core so devs had to make it work. Ukraine really needs those missiles to work, they will save Ukrainian lives and help them win the war.
A tiny number of people will end up with cpu's that have this behaviour, and the extra performance (a few % probably) isn't much. There just isn't enough payback to put much effort in.
Remember when people said Dual Core CPUs would never work efficiently, this wont even be a problem.
if the Ukrainians can work out how to operate US HARM missles from their Mig 29's, im sure the brains at AMD and MS can work this out.
It's a question of incentive - every cpu was going to be multi-core so devs had to make it work. Ukraine really needs those missiles to work, they will save Ukrainian lives and help them win the war.
A tiny number of people will end up with cpu's that have this behaviour, and the extra performance (a few % probably) isn't much. There just isn't enough payback to put much effort in.
pegasus1
Senior Member
Posts: 3536
Joined: 2012-11-06
Senior Member
Posts: 3536
Joined: 2012-11-06
#6097286 Posted on: 01/27/2023 07:38 PM
It's a question of incentive - every cpu was going to be multi-core so devs had to make it work. Ukraine really needs those missiles to work, they will save Ukrainian lives and help them win the war.
A tiny number of people will end up with cpu's that have this behaviour, and the extra performance (a few % probably) isn't much. There just isn't enough payback to put much effort in.
Necessity is the mother of invention.
It's a question of incentive - every cpu was going to be multi-core so devs had to make it work. Ukraine really needs those missiles to work, they will save Ukrainian lives and help them win the war.
A tiny number of people will end up with cpu's that have this behaviour, and the extra performance (a few % probably) isn't much. There just isn't enough payback to put much effort in.
Necessity is the mother of invention.
user1
Senior Member
Posts: 2482
Joined: 2016-01-29
Senior Member
Posts: 2482
Joined: 2016-01-29
#6097287 Posted on: 01/27/2023 07:44 PM
I think you're making a bit of a mountain out of a mole hill so to speak, whitelists are pretty easy , since you litterally just have to run the application twice, would take a single person maybe a week or 2 to test all of the most popular games. secondly if they were to use heuristics its probably not very difficult , I'd imagine even just checking l3 occupancy and or hit rate would be enough, ie, "this application doesn't hit the l3 cache very often --> move to ccd 1" , the part where it could get messy is if an application can use more than 16 threads, but that's probably an edge case for the vast majority of users.
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.
I think you're making a bit of a mountain out of a mole hill so to speak, whitelists are pretty easy , since you litterally just have to run the application twice, would take a single person maybe a week or 2 to test all of the most popular games. secondly if they were to use heuristics its probably not very difficult , I'd imagine even just checking l3 occupancy and or hit rate would be enough, ie, "this application doesn't hit the l3 cache very often --> move to ccd 1" , the part where it could get messy is if an application can use more than 16 threads, but that's probably an edge case for the vast majority of users.
geogan
Senior Member
Posts: 1190
Joined: 2010-01-04
Senior Member
Posts: 1190
Joined: 2010-01-04
#6098871 Posted on: 02/01/2023 07:16 PM
Maybe so. But will end user be able to do this for their own applications that were not checked and tested by this magical person who is going to test every application in existence?
I think you're making a bit of a mountain out of a mole hill so to speak, whitelists are pretty easy , since you litterally just have to run the application twice.
Maybe so. But will end user be able to do this for their own applications that were not checked and tested by this magical person who is going to test every application in existence?
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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 - very difficult job for Windows scheduler.
No idea what "your conclusion is specious" means?!?
1) "faster" = frequency as that's the literal meaning and usage.
2) the operation of processes running from 3D CCDs are not typically the same as processes run from another CCD (i.e. gaming) so any differential would most likely be found in productivity applications where the difference does not amount to much.
3) synthetic benches will highlight any such difference, but the result is not useful in RL.
4) most importantly, all of the concerns regarding performance are belied by Epyc processors in the real world handling far more complicated work.
these "concerns" have never surfaced in the Pro IT Cloud.