EPYC 7773X vs EPYC 9355P

EPYC 7773X vs EPYC 9355P Performance Spectrum

EPYC 7773X

64 / 128

91,340

0.0%

Ryzen 9 7900X3D

Ryzen Threadripper PRO 7955WX

Ryzen 9 9950X3D

Ryzen Threadripper 3990X

Ryzen Threadripper PRO 9975WX

Ryzen Threadripper PRO 7985WX

Ryzen Threadripper 7980X

Ryzen Threadripper 9980X

EPYC 9355P

32 / 64

97,249

+6.5%

Ryzen 9 7945HX

Ryzen Threadripper 3970X

Ryzen Threadripper PRO 5975WX

Ryzen Threadripper 7960X

Ryzen Threadripper PRO 9975WX

Ryzen Threadripper PRO 7985WX

Ryzen Threadripper 7980X

Ryzen Threadripper 9980X

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 7773X vs EPYC 9355P 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.

EPYC 7773X vs EPYC 9355P: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

EPYC 7773X

2022

Why buy it

✅+200% larger total L3 cache (768 MB vs 256 MB).

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9355P across 50 shared CPU benchmark tests.
❌Lower PassMark (91,340 vs 97,249).
❌Lower PassMark per dollar, at 10.4 vs 32.4 PassMark/$ ($8,800 MSRP vs $2,998 MSRP).
❌Older platform position on SP3 with DDR4, while EPYC 9355P moves to SP5 and DDR5.

EPYC 9355P

2024

Why buy it

✅Better for gaming: +8.4% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $5,802 less on MSRP ($2,998 MSRP vs $8,800 MSRP).
✅Delivers 212.5% more PassMark for each dollar spent, at 32.4 vs 10.4 PassMark/$ ($2,998 MSRP vs $8,800 MSRP).
✅Newer platform on SP5 with DDR5 support instead of SP3 and DDR4.

Trade-offs

❌Smaller total L3 cache (256 MB vs 768 MB).

Quick Answers

So, is EPYC 9355P better than EPYC 7773X?

Yes. EPYC 9355P is the better all-around CPU here. It gives you a 8.4% average FPS lead across 50 shared CPU game tests in our data, 6.5% better PassMark, and the stronger long-term platform, which is enough to make it the stronger overall pick.

Which one is better for gaming?

If gaming is the priority, EPYC 9355P is the better pick. According to our tests, it delivers 8.4% more average FPS across 50 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, EPYC 9355P is the stronger fit. You are getting 6.5% better PassMark, backed by 32 cores and 64 threads.

Which one is the smarter buy today, not just the cheaper CPU?

EPYC 9355P is the better buy right now. EPYC 9355P comes in $5,802 cheaper on MSRP at $2,998 MSRP versus $8,800 MSRP, and it still gives you a 8.4% average FPS lead across 50 shared CPU game tests in our data. It is also 212.5% better value on MSRP (32.4 vs 10.4 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

Which one is more future-proof for 2026 and beyond?

EPYC 9355P makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2022), a healthier platform with SP5 and DDR5 instead of SP3, and more multi-core headroom with 32 cores / 64 threads instead of 64/128. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

EPYC 7773X vs EPYC 9355P Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

EPYC 7773X

The EPYC 7773X is manufactured by AMD. It was released in 2022-03-22. It is based on the Milan-X (2022) architecture. It features 64 cores and 128 threads. Base frequency is 2.2 GHz, with boost up to 3.5 GHz. L3 cache: 768 MB (total). L2 cache: 512K (per core). Built on 7 nm process technology. Socket: SP3. Thermal design power (TDP): 280 Watt. Memory support: DDR4-3200. Passmark benchmark score: 91,340 points. Launch price was $8,800.

EPYC 9355P

The EPYC 9355P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 32 cores and 64 threads. Base frequency is 3.55 GHz, with boost up to 4.4 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 280 Watt. Memory support: DDR5. Passmark benchmark score: 97,249 points. Launch price was $2,998.

⚡

Processing Power

The EPYC 7773X packs 64 cores / 128 threads, while the EPYC 9355P offers 32 cores / 64 threads — the EPYC 7773X has 32 more cores. Boost clocks reach 3.5 GHz on the EPYC 7773X versus 4.4 GHz on the EPYC 9355P — a 22.8% clock advantage for the EPYC 9355P (base: 2.2 GHz vs 3.55 GHz). The EPYC 7773X uses the Milan-X (2022) architecture (7 nm), while the EPYC 9355P uses Turin (2024) (4 nm). In PassMark, the EPYC 7773X scores 91,340 against the EPYC 9355P's 97,249 — a 6.3% lead for the EPYC 9355P. L3 cache: 768 MB (total) on the EPYC 7773X vs 256 MB (total) on the EPYC 9355P.

Feature	EPYC 7773X	EPYC 9355P
Cores / Threads	64 / 128+100%	32 / 64
Boost Clock	3.5 GHz	4.4 GHz+26%
Base Clock	2.2 GHz	3.55 GHz+61%
L3 Cache	768 MB (total)+200%	256 MB (total)
L2 Cache	512K (per core)+51100%	1 MB (per core)
Process	7 nm	4 nm-43%
Architecture	Milan-X (2022)	Turin (2024)
PassMark	91,340	97,249+6%
Geekbench 6 Single	1,536	—
Geekbench 6 Multi	45,000	—

🧠

Memory & Platform

The EPYC 7773X uses the SP3 socket (PCIe 4.0), while the EPYC 9355P uses SP5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the EPYC 7773X versus DDR5-6000 on the EPYC 9355P — the EPYC 9355P supports 87.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 9355P supports up to 6 TB of RAM compared to 4 TB — 50% more capacity for professional workloads. Memory channels: 8 (EPYC 7773X) vs 12 (EPYC 9355P). Both provide 128 PCIe lanes. Chipset compatibility: SP3 (EPYC 7773X) and SP5 (EPYC 9355P).

Feature	EPYC 7773X	EPYC 9355P
Socket	SP3	SP5
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	DDR5-6000+88%
Max RAM Capacity	4 TB	6 TB+50%
RAM Channels	8	12+50%
ECC Support	Yes	Yes
PCIe Lanes	128	128

🔧

Advanced Features

Virtualization support: AMD-V (EPYC 7773X) vs AMD-V, SEV-SNP (EPYC 9355P). Primary use case: EPYC 7773X targets Server, EPYC 9355P targets Data Center / Single Socket. Direct competitor: EPYC 7773X rivals EPYC 9654; EPYC 9355P rivals Xeon 6740P.

Feature	EPYC 7773X	EPYC 9355P
Integrated GPU	No	No
IGPU Model	None	—
Unlocked	No	—
AVX-512	No	—
Virtualization	AMD-V	AMD-V, SEV-SNP
Target Use	Server	Data Center / Single Socket

💰

Value Analysis

At launch, the EPYC 7773X was priced at $8800, while the EPYC 9355P came in at $2998. On launch pricing ($8800 vs $2998), EPYC 9355P was $5802 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7773X delivers 10.4 pts/$ vs 32.4 pts/$ for the EPYC 9355P — making the EPYC 9355P the 103% better value option.

Feature	EPYC 7773X	EPYC 9355P
MSRP	$8800	$2998-66%
Performance per Dollar	10.4	32.4+212%
Release Date	2022	2024

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