Gaming PC

AMD Unveils Ryzen 9 7950X3D, 7900X3D, and Ryzen 7 7800X3D, Up to 128 MB of L3 Cache And 5.7 GHz Boost

At Computex 22, AMD showcased its updated CPU roadmap through 2024, bringing exciting propositions to the desktop processor market. One of these products highlighted is the new 3D V-Cache SKU based on Zen 4 cores, and due to the success of the previous Ryzen 7 5800X3D with 96MB of 3D stacked V-Cache, gamers have since , devouring bit by bit. Using the prime time keynote slot of CES 2023, AMD has brought to market his next 3D V-Cache based processor using the Zen 4 core architecture.

AMD isn’t the only new Zen 4 based X3D SKU announced. They are announcing three across the Ryzen 7000 series, the Ryzen 9 7950X3D, the Ryzen 9 7900X3D, and the Ryzen 7 7800X3D. All three Zen 4 X3D SKUs feature a 120W TDP, except for an additional 64MB of L3 cache thanks to AMD’s 3D V-Cache stacking technology, a 3D chiplet stacking technology paired with TSMC. It also features higher boosted core frequencies than previous X3D chips, with the Ryzen 9 7950X3D boosting up to an impressive 5.7 GHz at the core.

AMD and 3D Chiplets: L3 Cache Stacks for Gamers

Since the release of AMD’s first desktop processor with 3D V-Cache packaging technology, the Ryzen 7 5800X3D, users and gamers have been exposed to the framerate benefits of a large pool of L3 cache in CPU-limited scenarios. I have tasted it. Focusing on the previous Ryzen 7 5800X3D, AMD and TSMC have put a 64 MB SRAM chiplet on top of the existing 32 MB by directly bonding the TSV with copper to copper to ensure circuit integrity. Added.

This method involves enabling parity between the 3D stack chiplet, the rest of the silicon, and the integrated heat spreader (IHS) to fit within the same overall platform frame, including coolers and compatibility. thinning. The Ryzen 7 5800X3D and its stacked 96MB L3 V-Cache showed significant improvements in certain titles, so the extra L3 cache didn’t offer that performance boost in other titles. There is no official list of games that will benefit from additional L3 cache yet.

The Ryzen 7 5800X3D’s main caveat lies in its computing performance. Lower overall core clock speeds than the Ryzen 7 5800X caused issues with tasks like rendering, encoding, and tasks and workloads that don’t benefit from a large L3 cache. AMD seems to have taken that into account and done better.

Below is a detailed coverage list of AMD’s Ryzen 7000 desktop processors and their 3D V-Cache packing technology.

Ryzen 9 7950X3D: New Flagship For Gaming With 128 MB L3 Cache, Up To 5.7 GHz

AMD Takes Full Advantage Of 3D V-Cache Packaging Technology With The Announcement Of The Giant 16-Core, 32-Thread AMD Ryzen 9 7950X3D With 128MB Of L3 Cache And Boost Core Clock Speeds Of Up To 5.7 GHz Did. We’ve seen some concessional trade-offs in compute performance over the previous generation Ryzen 7 5800X3D, which is explained by the lower voltage, necessitating a lower core base frequency and a lower core boost frequency. became. The result was a drop in pure CPU compute performance in contrast to the Ryzen 7 5800X.

The latest Ryzen 7000 X3D SKUs appear to mitigate many of the previous performance discrepancies seen with the Ryzen 7 5800X3D and 5800X. This is by allowing similar peak turbo clock speeds without interfering with the integrity of the stacked silicon within the 3D V-Cache. stack.

We got in touch with AMD to see how they’d be consistent with boost clock speeds that are significantly higher than their predecessor, the Ryzen 7 5800X3D. We believe that this combination is one of the reasons why they managed it, as their performance per watt upgrade is better than the 7nm Zen 3 core. We also asked AMD if their Ryzen 7000 X3D processors are unlocked or if overclocking with frequency multipliers is disabled. As soon as I receive a reply, I will update this article and reply.

Starting with the flagship SKU, the Ryzen 9 7950X3D shares many of the same characteristics as the Ryzen 9 7900X, such as 16 cores and 32 threads and a turbo frequency of up to 5.7 GHz. The enhanced chip offers 128MB of L3 cache. This consists of 64MB of the existing pooled L3 cache in the CCD, and another 64MB sliced ​​in the TSV (perhaps placing 64MB in one CCD, creating an unbalanced cache ). Curiously, the official TDP is also much lower, with the chip rated at 120W as opposed to 170W for the regular 7950X. As a result, the 7950X3D has a lower base core frequency of 4.2 GHz versus 4.5 GHz. The Ryzen 9 7950X3D has a 300 MHz slower base frequency, but the same 5.7 GHz turbo frequency means peak performance is similar, but in heavily multithreaded situations, the TDP could be lower. It will definitely work.

AMD Ryzen 7000X/X3D Series Lineup
anand tech core
thread
base
frequency
turbo
frequency
memory
support
L3
cache
TDP Manufacturer’s suggested retail price
Ryzen 9 7950X 16C/32T 4.5GHz 5.7GHz DDR5-5200 64MB 170W $699
Ryzen 9 7950X3D 16C/32T 4.2GHz 5.7GHz DDR5-5200 128MB 120W to be decided
Ryzen 9 7900X 12C/24T 4.7GHz 5.6GHz DDR5-5200 64MB 170W $549
Ryzen 9 7900X3D 12C/24T 4.4GHz 5.6GHz DDR5-5200 128MB 120W to be decided
Ryzen 7 7800X3D 8C/16T to be decided 5.0GHz DDR5-5200 96MB 120W to be decided
Ryzen 7 5800X3D 8C/16T 3.4GHz 4.5GHz DDR4-3200 96MB 105W $449

AMD competes at the top of the x86 desktop market with 16 core products in both compute and gaming. Still, AMD also has his 12-core solution with his X3D chiplet packaging tech, the Ryzen 9 7900X3D. Stacked alongside the Ryzen 9 7900X, the Ryzen 9 7900X3D features twice the L3 cache (128 vs 64 MB) and the same 4.4 GHz boost core clock speed. The only difference is the base frequency and power consumption. The Ryzen 9 7900X3D will have the same 120 W TDP as all new Ryzen 7000 X3D based SKUs resulting in a base core frequency of 4.7 GHz to 4.4 GHz. 300 MHz drop at base.

Ryzen 7 7800X3D: Similar to Ryzen 7 5800X3D, but better

The final third X3D SKU is the Ryzen 7 7800X3D processor, a direct successor to the previous Ryzen 7 5800X3D. Sharing the same massive L3 cache of 96MB, AMD improved the specs with faster boosted core clock speeds of up to 5 GHz and the rest that AMD’s Zen 4 TSMC 5nm cores bring to the table in both performance, IPC. provides the benefits of Rise, and performance efficiency per watt.

AMD also provides internal numbers for the Ryzen 9 7800X3D and Ryzen 7 5800X3D. These include a 21% performance improvement at high settings for 1080p, a 22% improvement in Warhammer Dawn of War 3, and a 23% improvement in CS: GO framerates. In addition to these performance claims AMD claims the Ryzen 9 7800X3D has a 30% improvement in DOTA 2. AMD does not provide internal data on computing performance or gaming performance data for the Ryzen 9 7950X3D or Ryzen 9 7900X3D processors. .

All three of AMD’s latest X3D-based 3D V-Cache packaged processors, including the Ryzen 9 7950X3D, Ryzen 9 7900X3D and Ryzen 7 7800X3D, will be available in February 2023. No information was provided on the expected MSRP, but the Ryzen 7 5800X3D for each CPU came with a $100 premium over the regular Ryzen 7 5800X. We expect at least a similar price premium to exist.

With price cuts already in place for non-X3D SKUs already on the market, such as the Ryzen 9 7900X, it’s possible that there’s room for the Ryzen 7000 X3D SKUs to slot into the original MSRP of each corresponding processor in the family. I have.

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