Ryzen 9 9955X6D leaked specs, prices, and more

Recent leaks have suggested AMD is cooking a Ryzen 9 9955X6D as the next step-up in its processor game. It likely fixes a key bottleneck on the existing high-end 9950X3D design, allowing for bundling even more 3D V-cache. These details were recently unveiled by reliable industry insider Moore's Law is Dead, who took to YouTube to discuss the upcoming AMD flagship alongside Intel's Series 3-based Core Ultra 9 385K chips.

Much of the information on these processors, however, is based on early leaks. According to MLID and KitGuru, who unveiled the chip in episode 323 of the "Broken Silicon" podcast, the processor is under work. However, there are contradictory claims from ChipHell forum user wjm47196, according to whom "dual-X3D" chips "don't exist."

Let's review everything unveiled about the rumoured enthusiast-grade Team Red CPU.

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What are the leaked specs of the Ryzen 9 9955X6D?

The Ryzen 9 9955X6D could deliver significant gains in AI and CPU-heavy workloads (Image via AMD)

The key change with the rumoured 9955X6D is expected to be more 3D V-cache. For the last couple of generations, Ryzen 9-based X3D processors have had a notable bottleneck: they're based on a hybrid design. The 16 cores were divided among two core complexes (CCX). One of them bundled all of the V-cache, while the other was identical to a traditional CCX on the 9950X. That is changing with the new design.

Here's a quick look at how the specs conform to the other existing Ryzen 9-based X3D chips:

Specification	Ryzen 9 9955X6D (Rumored)	Ryzen 9 9955HX3D (Mobile - Confirmed)	Ryzen 9 9950X3D (Desktop - Confirmed)
Status	Unconfirmed leak/rumor	Official, launched Jan 2025	Official, launched Mar 2025
Architecture	Zen 5	Zen 5	Zen 5
Process Node	4nm TSMC	4nm TSMC	4nm TSMC
Cores/Threads	16C/32T	16C/32T	16C/32T
Base Clock	Unknown	2.0 GHz	4.3 GHz
Boost Clock	Unknown	Up to 5.4 GHz	Up to 5.65 GHz
L3 Cache	192MB (Dual X3D)	128MB (Single X3D)	144MB (Single X3D)
3D V-Cache	128MB (64MB per CCD)	64MB (Single CCD)	96MB (Single CCD)
Standard L3	64MB (32MB per CCD)	64MB	48MB
TDP	200W (rumored)	55-75W (configurable)	170W
Platform	AM5 Desktop	Mobile (FP8)	AM5 Desktop
Memory Support	DDR5-5600 (estimated)	DDR5-5600	DDR5-5600
PCIe Support	PCIe 5.0 (estimated)	PCIe 4.0	PCIe 5.0
Price (MSRP)	$799-999 (rumored)	OEM only	$699
Availability	Does not exist	Q1 2025	March 2025
Key Feature	First dual X3D consumer CPU	Mobile X3D flagship	Desktop X3D flagship
Target Use	Extreme enthusiast/AI workloads	High-end gaming laptops	High-end desktop gaming
Gaming Performance	4-11% over single X3D (projected)	Leading mobile gaming CPU	37% faster than Intel 285K

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What are the expected prices of the Ryzen 9 9955X6D?

The price range cited by Moore's Law is Dead and other hardware leakers for the hypothetical dual X3D processor is $799-$999 USD. For starters, that's a wide range. But it also makes the X6D chip the costliest Ryzen ever. For some context, the 9950X3D debuted at $699, with the capable 7950X3D selling at $599 in the current market.

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Expected performance of the Ryzen 9 9955X6D

AMD has previously stated dual-X3D chips may not exist, citing economic factors (Image via SHI)

It's worth noting that there are quite a few sources that claim these chips don't exist. Besides "wjm47196" from ChipHell, WCCFtech also reported on the contradictory claims, leading to some hot community debates. AMD previously stated in January 2025 that dual-X3D designs were "not economically viable." Their main point was limited gaming benefits amid significantly increased cost concerns.

However, things have significantly changed since then, given AI workload demands that extremely benefit from a larger AI cache.

Coming to performance deltas, hardware communities project 4-11% gaming improvements over the 9950X3D. The primary gains would only be seen in CPU-heavy games like Warhammer 40,000, Cyberpunk 2077, and others. Major technical challenges with the dual-X3D design are:

• Cross-CCD latency concerns in asymmetric cache designs
• Substantial power consumption increases (200W TDP)
• Complex thermal management requirements

The AMD Ryzen 9 9955X6D exists only in leak claims and community speculation. Although reliable sources like MLID and KitGuru are now talking about it, we have no confirmation from AMD yet. While the processor appears to be promising, we recommend that users take all details discussed in this article with a grain of salt.