Corsair H170i Elite Capellix XT review
Forspoken: PC performance graphics benchmarks
ASRock Z790 Taichi review
The Callisto Protocol: PC graphics benchmarks
G.Skill TridentZ 5 RGB 6800 MHz CL34 DDR5 review
Be Quiet! Dark Power 13 - 1000W PSU Review
Palit GeForce RTX 4080 GamingPRO OC review
Core i9 13900K DDR5 7200 MHz (+memory scaling) review
Seasonic Prime Titanium TX-1300 (1300W PSU) review
F1 2022: PC graphics performance benchmark review
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
After numerous leaks and much discussion, a possible release date for GTA 6 has emerged. According to Microsoft, the Rockstar Games-developed game will be released in 2024....
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. ...
GarrettL
Senior Member
Posts: 319
Joined: 2019-09-09
Senior Member
Posts: 319
Joined: 2019-09-09
#6096492 Posted on: 01/25/2023 04:32 PM
I believe AMD is trying to get the best of both worlds. With the design used on the 5800x3d the max speed is limited when compared to the 5800x due to the heat issues with the shared cache. This reduces the performance for games that use primarily one core and is evident in the test results.
With the new design AMD is trying to offer the best of both, the huge cache for one CCD for games that benefit at a reduced max frequency and one CCD with the standard cache that can boost to it's max of 5.2GHz-5.6GHZ.
Question is, can you manage the heat to allow this to actually happen?
I believe AMD is trying to get the best of both worlds. With the design used on the 5800x3d the max speed is limited when compared to the 5800x due to the heat issues with the shared cache. This reduces the performance for games that use primarily one core and is evident in the test results.
With the new design AMD is trying to offer the best of both, the huge cache for one CCD for games that benefit at a reduced max frequency and one CCD with the standard cache that can boost to it's max of 5.2GHz-5.6GHZ.
Question is, can you manage the heat to allow this to actually happen?
tunejunky
Senior Member
Posts: 3045
Joined: 2017-08-18
Senior Member
Posts: 3045
Joined: 2017-08-18
#6096517 Posted on: 01/25/2023 05:33 PM
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.
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.
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.
tunejunky
Senior Member
Posts: 3045
Joined: 2017-08-18
Senior Member
Posts: 3045
Joined: 2017-08-18
#6096518 Posted on: 01/25/2023 05:34 PM
I believe AMD is trying to get the best of both worlds. With the design used on the 5800x3d the max speed is limited when compared to the 5800x due to the heat issues with the shared cache. This reduces the performance for games that use primarily one core and is evident in the test results.
With the new design AMD is trying to offer the best of both, the huge cache for one CCD for games that benefit at a reduced max frequency and one CCD with the standard cache that can boost to it's max of 5.2GHz-5.6GHZ.
Question is, can you manage the heat to allow this to actually happen?
THAT is the question
I believe AMD is trying to get the best of both worlds. With the design used on the 5800x3d the max speed is limited when compared to the 5800x due to the heat issues with the shared cache. This reduces the performance for games that use primarily one core and is evident in the test results.
With the new design AMD is trying to offer the best of both, the huge cache for one CCD for games that benefit at a reduced max frequency and one CCD with the standard cache that can boost to it's max of 5.2GHz-5.6GHZ.
Question is, can you manage the heat to allow this to actually happen?
THAT is the question
geogan
Senior Member
Posts: 1126
Joined: 2010-01-04
Senior Member
Posts: 1126
Joined: 2010-01-04
#6096570 Posted on: 01/25/2023 08:11 PM
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.
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?!?
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.
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?!?
Click here to post a comment for this news story on the message forum.
Senior Member
Posts: 2736
Joined: 2012-11-06
What games use more than 8 cores? But plenty of apps use 16 cores so a win win. 8 fast game core and 16 fast productivity cores all for a lower price, less power draw and less heat.