EPYC 9555P vs EPYC 9655

EPYC 9555P vs EPYC 9655 Performance Spectrum

EPYC 9555P

64 / 128

135,441

0.0%

Ryzen Threadripper PRO 7955WX

Ryzen Threadripper PRO 5975WX

Ryzen Threadripper 7960X

Ryzen Threadripper 7970X

Ryzen Threadripper 9970X

Ryzen Threadripper 9980X

Ryzen Threadripper PRO 9985WX

Ryzen Threadripper PRO 9995WX

EPYC 9655

96 / 192

156,110

+15.3%

Ryzen 7 7700X

Ryzen 9 9850HX

Ryzen 9 9950X3D

Ryzen Threadripper 7960X

Ryzen Threadripper 7970X

Ryzen Threadripper 9970X

Ryzen Threadripper 7980X

Ryzen Threadripper PRO 9995WX

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 9555P vs EPYC 9655 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 9555P vs EPYC 9655: Pros, Cons & Final Verdict

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

EPYC 9555P

2024

Why buy it

✅+0.3% higher Geekbench multi-core.
✅Costs $3,869 less on MSRP ($7,983 MSRP vs $11,852 MSRP).
✅Delivers 28.8% more PassMark for each dollar spent, at 17.0 vs 13.2 PassMark/$ ($7,983 MSRP vs $11,852 MSRP).

Trade-offs

❌Lower Geekbench single-core performance for gaming (2,815 vs 2,830).
❌Smaller total L3 cache (256 MB vs 384 MB).
❌No AVX-512 support for niche heavy compute workloads where it can matter.

EPYC 9655

2024

Why buy it

✅+0.5% higher Geekbench single-core performance for gaming and desktop responsiveness.
✅+50% larger total L3 cache (384 MB vs 256 MB).
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Lower Geekbench multi-core (29,329 vs 29,406).
❌Lower PassMark per dollar, at 13.2 vs 17.0 PassMark/$ ($11,852 MSRP vs $7,983 MSRP).

Quick Answers

So, is EPYC 9655 better than EPYC 9555P?

It depends on what you want from the system. For gaming, EPYC 9655 is ahead with a 0.4% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, EPYC 9555P pulls ahead with 0.3% better Geekbench multi-core. EPYC 9655 also has the bigger cache pool with 50% larger total L3 cache (384 MB vs 256 MB).

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

For streaming, content creation, and heavier multitasking, EPYC 9555P is the stronger fit. You are getting 0.3% better Geekbench multi-core, backed by 64 cores and 128 threads.

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

EPYC 9655 is the stronger pure gaming CPU, but EPYC 9555P probably makes more sense for most balanced builds. EPYC 9655 comes in 48.5% more expensive on MSRP at $11,852 MSRP versus $7,983 MSRP, and it still gives you a 0.4% average FPS lead across 50 shared CPU game tests in our data. A lot of the premium is paying for the extra gaming cache, while EPYC 9555P keeps platform cost lower and stays stronger for more mixed workloads.

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

EPYC 9655 makes more sense long term for 2026 and beyond. You are getting 50% larger total L3 cache (384 MB vs 256 MB) and AVX-512 support for heavier modern compute workloads. That extra cache should keep paying off in CPU-limited games and high-refresh builds.

EPYC 9555P vs EPYC 9655 Technical Specifications

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

EPYC 9555P

The EPYC 9555P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 64 cores and 128 threads. Base frequency is 3.2 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): 360 Watt. Memory support: DDR5. Passmark benchmark score: 135,441 points. Launch price was $7,983.

EPYC 9655

The EPYC 9655 is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 96 cores and 192 threads. Base frequency is 2.6 GHz, with boost up to 4.5 GHz. L3 cache: 384 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 400 Watt. Memory support: DDR5. Passmark benchmark score: 156,110 points. Launch price was $11,852.

⚡

Processing Power

The EPYC 9555P packs 64 cores / 128 threads, while the EPYC 9655 offers 96 cores / 192 threads — the EPYC 9655 has 32 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555P versus 4.5 GHz on the EPYC 9655 — a 2.2% clock advantage for the EPYC 9655 (base: 3.2 GHz vs 2.6 GHz). Both are built on the Turin (2024) architecture using a 4 nm process. In PassMark, the EPYC 9555P scores 135,441 against the EPYC 9655's 156,110 — a 14.2% lead for the EPYC 9655. Geekbench 6 single-core — the metric most relevant to gaming — records 2,815 vs 2,830, a 0.5% lead for the EPYC 9655 that directly translates to higher frame rates. Multi-core Geekbench: 29,406 vs 29,329 (0.3% advantage for the EPYC 9555P). L3 cache: 256 MB (total) on the EPYC 9555P vs 384 MB (total) on the EPYC 9655.

Feature	EPYC 9555P	EPYC 9655
Cores / Threads	64 / 128	96 / 192+50%
Boost Clock	4.4 GHz	4.5 GHz+2%
Base Clock	3.2 GHz+23%	2.6 GHz
L3 Cache	256 MB (total)	384 MB (total)+50%
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm	4 nm
Architecture	Turin (2024)	Turin (2024)
PassMark	135,441	156,110+15%
Geekbench 6 Single	2,815	2,830
Geekbench 6 Multi	29,406	29,329

🧠

Memory & Platform

Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-6000 memory speed. The EPYC 9655 supports up to 9 TB of RAM compared to 6 TB — 50% more capacity for professional workloads. Both feature 12-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP5 (EPYC 9555P) and SP5 (EPYC 9655).

Feature	EPYC 9555P	EPYC 9655
Socket	SP5	SP5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-6000	DDR5-6000
Max RAM Capacity	6 TB	9 TB+50%
RAM Channels	12	12
ECC Support	Yes	Yes
PCIe Lanes	128	128

🔧

Advanced Features

Both support AMD-V, SEV-SNP virtualization. Primary use case: EPYC 9555P targets Data Center / Single Socket, EPYC 9655 targets Data Center. Direct competitor: EPYC 9555P rivals Xeon 6979P; EPYC 9655 rivals Xeon 6979P.

Feature	EPYC 9555P	EPYC 9655
Integrated GPU	No	No
Unlocked	—	No
AVX-512	—	Yes
Virtualization	AMD-V, SEV-SNP	AMD-V, SEV-SNP
Target Use	Data Center / Single Socket	Data Center

💰

Value Analysis

At launch, the EPYC 9555P was priced at $7983, while the EPYC 9655 came in at $11852. On launch pricing ($7983 vs $11852), EPYC 9555P was $3869 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555P delivers 17.0 pts/$ vs 13.2 pts/$ for the EPYC 9655 — making the EPYC 9555P the 25.2% better value option.

Feature	EPYC 9555P	EPYC 9655
MSRP	$7983-33%	$11852
Performance per Dollar	17.0+29%	13.2
Release Date	2024	2024

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