EPYC 8434P
Ryzen Threadripper PRO 9955WX
EPYC 8434P vs Ryzen Threadripper PRO 9955WX Performance Spectrum
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
EPYC 8434P vs Ryzen Threadripper PRO 9955WX FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
EPYC 8434P vs Ryzen Threadripper PRO 9955WX: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 8434P
2023Why buy it
- ✅+100% larger total L3 cache (128 MB vs 64 MB).
- ✅Draws 200W instead of 350W, a 150W reduction.
Trade-offs
- ❌Worse for gaming: lower average FPS than Ryzen Threadripper PRO 9955WX across 50 shared CPU benchmark tests.
- ❌Lower PassMark (66,490 vs 67,561).
- ❌Lower PassMark per dollar, at 43.8 vs 157.5 PassMark/$ ($1,517 MSRP vs $429 MSRP).
Ryzen Threadripper PRO 9955WX
2025Why buy it
- ✅Better for gaming: +26.0% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $1,088 less on MSRP ($429 MSRP vs $1,517 MSRP).
- ✅Delivers 259.3% more PassMark for each dollar spent, at 157.5 vs 43.8 PassMark/$ ($429 MSRP vs $1,517 MSRP).
- ✅33.3% more PCIe lanes (128 vs 96) for storage and expansion-heavy builds.
Trade-offs
- ❌Smaller total L3 cache (64 MB vs 128 MB).
- ❌75% higher power demand at 350W vs 200W.
Quick Answers
So, is Ryzen Threadripper PRO 9955WX better than EPYC 8434P?
Which one is better for gaming?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
EPYC 8434P vs Ryzen Threadripper PRO 9955WX Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
EPYC 8434P
The EPYC 8434P is manufactured by AMD. It was released in 18 September 2023 (2 years ago). It is based on the Siena (2023−2024) architecture. It features 48 cores and 96 threads. Base frequency is 2.5 GHz, with boost up to 3.1 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: SP6. Thermal design power (TDP): 200 Watt. Memory support: DDR5. Passmark benchmark score: 66,490 points. Launch price was $2,700.
Ryzen Threadripper PRO 9955WX
The Ryzen Threadripper PRO 9955WX is manufactured by AMD. It was released in 23 July 2025 (less than a year ago). It is based on the Shimada Peak (2025) architecture. It features 16 cores and 32 threads. Base frequency is 4.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: sTR5. Thermal design power (TDP): 350 Watt. Memory support: DDR5. Passmark benchmark score: 67,561 points. Launch price was $1,649.
Processing Power
The EPYC 8434P packs 48 cores / 96 threads, while the Ryzen Threadripper PRO 9955WX offers 16 cores / 32 threads — the EPYC 8434P has 32 more cores. Boost clocks reach 3.1 GHz on the EPYC 8434P versus 5.4 GHz on the Ryzen Threadripper PRO 9955WX — a 54.1% clock advantage for the Ryzen Threadripper PRO 9955WX (base: 2.5 GHz vs 4.5 GHz). The EPYC 8434P uses the Siena (2023−2024) architecture (5 nm), while the Ryzen Threadripper PRO 9955WX uses Shimada Peak (2025) (4 nm). In PassMark, the EPYC 8434P scores 66,490 against the Ryzen Threadripper PRO 9955WX's 67,561 — a 1.6% lead for the Ryzen Threadripper PRO 9955WX. L3 cache: 128 MB (total) on the EPYC 8434P vs 64 MB (total) on the Ryzen Threadripper PRO 9955WX.
| Feature | EPYC 8434P | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Cores / Threads | 48 / 96+200% | 16 / 32 |
| Boost Clock | 3.1 GHz | 5.4 GHz+74% |
| Base Clock | 2.5 GHz | 4.5 GHz+80% |
| L3 Cache | 128 MB (total)+100% | 64 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 5 nm | 4 nm-20% |
| Architecture | Siena (2023−2024) | Shimada Peak (2025) |
| PassMark | 66,490 | 67,561+2% |
| Cinebench R23 Multi | — | 40,000 |
| Geekbench 6 Single | — | 3,016 |
| Geekbench 6 Multi | — | 23,596 |
Memory & Platform
The EPYC 8434P uses the SP6 socket (PCIe 4.0), while the Ryzen Threadripper PRO 9955WX uses sTR5 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the EPYC 8434P versus DDR5-6400 on the Ryzen Threadripper PRO 9955WX — the Ryzen Threadripper PRO 9955WX supports 33.3% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen Threadripper PRO 9955WX supports up to 2048 GB of RAM compared to 1152 GB — 77.8% more capacity for professional workloads. Memory channels: 6 (EPYC 8434P) vs 8 (Ryzen Threadripper PRO 9955WX). PCIe lanes: 96 (EPYC 8434P) vs 128 (Ryzen Threadripper PRO 9955WX) — the Ryzen Threadripper PRO 9955WX offers 32 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP6 (EPYC 8434P) and WRX90 (Ryzen Threadripper PRO 9955WX).
| Feature | EPYC 8434P | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Socket | SP6 | sTR5 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | 4800 | DDR5-6400+33% |
| Max RAM Capacity | 1152 GB | 2048 GB+78% |
| RAM Channels | 6 | 8+33% |
| ECC Support | Yes | Yes |
| PCIe Lanes | 96 | 128+33% |
Advanced Features
Only the Ryzen Threadripper PRO 9955WX has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d (EPYC 8434P) vs true (Ryzen Threadripper PRO 9955WX). Direct competitor: EPYC 8434P rivals Xeon Platinum 8452Y; Ryzen Threadripper PRO 9955WX rivals Xeon w7-3555.
| Feature | EPYC 8434P | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d | true |
Value Analysis
At launch, the EPYC 8434P was priced at $1517, while the Ryzen Threadripper PRO 9955WX came in at $429. On launch pricing ($1517 vs $429), Ryzen Threadripper PRO 9955WX was $1088 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 8434P delivers 43.8 pts/$ vs 157.5 pts/$ for the Ryzen Threadripper PRO 9955WX — making the Ryzen Threadripper PRO 9955WX the 112.9% better value option.
| Feature | EPYC 8434P | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| MSRP | $1517 | $429-72% |
| Performance per Dollar | 43.8 | 157.5+260% |
| Release Date | 2023 | 2025 |
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