EPYC 9555 vs EPYC 9845

EPYC 9555 vs EPYC 9845 Performance Spectrum

EPYC 9555

64 / 128

133,253

0.0%

Ryzen 9 9950X3D

Ryzen Threadripper 7960X

Ryzen Threadripper 7970X

Ryzen Threadripper 9970X

Ryzen Threadripper 9980X

Ryzen Threadripper PRO 7995WX

Ryzen Threadripper PRO 9985WX

Ryzen Threadripper PRO 9995WX

EPYC 9845

160 / 320

152,985

+14.8%

Ryzen AI 9 HX 370

Ryzen 9 9850HX

Ryzen Threadripper PRO 9955WX

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 9555 vs EPYC 9845 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 9555 vs EPYC 9845: Pros, Cons & Final Verdict

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

EPYC 9555

2024

Why buy it

✅Better for gaming: +21.3% higher average FPS across 50 shared CPU benchmark tests.
✅Costs $3,738 less on MSRP ($9,826 MSRP vs $13,564 MSRP).
✅Delivers 20.2% more PassMark for each dollar spent, at 13.6 vs 11.3 PassMark/$ ($9,826 MSRP vs $13,564 MSRP).

Trade-offs

❌Lower PassMark (133,253 vs 152,985).
❌Smaller total L3 cache (256 MB vs 320 MB).

EPYC 9845

2024

Why buy it

✅+14.8% higher PassMark.
✅+25% larger total L3 cache (320 MB vs 256 MB).

Trade-offs

❌Worse for gaming: lower average FPS than EPYC 9555 across 50 shared CPU benchmark tests.
❌Lower PassMark per dollar, at 11.3 vs 13.6 PassMark/$ ($13,564 MSRP vs $9,826 MSRP).

Quick Answers

So, is EPYC 9845 better than EPYC 9555?

It depends on what you want from the system. For gaming, EPYC 9555 is ahead with a 21.3% average FPS lead across 50 shared CPU game tests in our data. For rendering, compiling, streaming, and heavier multitasking, EPYC 9845 pulls ahead with 14.8% better PassMark. EPYC 9845 also has the bigger cache pool with 25% larger total L3 cache (320 MB vs 256 MB).

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

For streaming, content creation, and heavier multitasking, EPYC 9845 is the stronger fit. You are getting 14.8% better PassMark, backed by 160 cores and 320 threads. It also has the larger cache pool with 25% larger total L3 cache (320 MB vs 256 MB).

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

EPYC 9845 is still the faster CPU overall, but EPYC 9555 is easier to justify if budget matters more than peak performance. EPYC 9845 comes in 38.0% more expensive on MSRP at $13,564 MSRP versus $9,826 MSRP, and it still gives you 14.8% better PassMark. The compromise is that EPYC 9555 is still the better pure gaming CPU with a 21.3% average FPS lead across 50 shared CPU game tests in our data. EPYC 9555 is also 20.2% better value on MSRP (13.6 vs 11.3 PassMark/$), which is why it can still make sense for tighter-budget builds on paper.

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

EPYC 9845 makes more sense long term for 2026 and beyond. You are getting 25% larger total L3 cache (320 MB vs 256 MB) and more multi-core headroom with 160 cores / 320 threads instead of 64/128. That extra cache should keep paying off in CPU-limited games and high-refresh builds.

EPYC 9555 vs EPYC 9845 Technical Specifications

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

EPYC 9555

The EPYC 9555 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: 133,253 points. Launch price was $9,826.

EPYC 9845

The EPYC 9845 is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 160 cores and 320 threads. Base frequency is 2.1 GHz, with boost up to 3.7 GHz. L3 cache: 320 MB (total). L2 cache: 1 MB (per core). Built on 3 nm process technology. Socket: SP5. Thermal design power (TDP): 390 Watt. Memory support: DDR5. Passmark benchmark score: 152,985 points. Launch price was $13,564.

⚡

Processing Power

The EPYC 9555 packs 64 cores / 128 threads, while the EPYC 9845 offers 160 cores / 320 threads — the EPYC 9845 has 96 more cores. Boost clocks reach 4.4 GHz on the EPYC 9555 versus 3.7 GHz on the EPYC 9845 — a 17.3% clock advantage for the EPYC 9555 (base: 3.2 GHz vs 2.1 GHz). Both are built on the Turin (2024) architecture using a 4 nm process. In PassMark, the EPYC 9555 scores 133,253 against the EPYC 9845's 152,985 — a 13.8% lead for the EPYC 9845. L3 cache: 256 MB (total) on the EPYC 9555 vs 320 MB (total) on the EPYC 9845.

Feature	EPYC 9555	EPYC 9845
Cores / Threads	64 / 128	160 / 320+150%
Boost Clock	4.4 GHz+19%	3.7 GHz
Base Clock	3.2 GHz+52%	2.1 GHz
L3 Cache	256 MB (total)	320 MB (total)+25%
L2 Cache	1 MB (per core)	1 MB (per core)
Process	4 nm	3 nm-25%
Architecture	Turin (2024)	Turin (2024)
PassMark	133,253	152,985+15%

🧠

Memory & Platform

Both processors use the SP5 socket with PCIe 5.0. Both support up to DDR5-6000 memory speed. Both support up to 6 TB of RAM. Both feature 12-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP5 (EPYC 9555) and SP5 (EPYC 9845).

Feature	EPYC 9555	EPYC 9845
Socket	SP5	SP5
PCIe Generation	PCIe 5.0	PCIe 5.0
Max RAM Speed	DDR5-6000	DDR5-6000
Max RAM Capacity	6 TB	6 TB
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 9555 targets Data Center, EPYC 9845 targets Data Center / AI Training. Direct competitor: EPYC 9555 rivals Xeon 6972P; EPYC 9845 rivals Xeon 6972P.

Feature	EPYC 9555	EPYC 9845
Integrated GPU	No	No
Virtualization	AMD-V, SEV-SNP	AMD-V, SEV-SNP
Target Use	Data Center	Data Center / AI Training

💰

Value Analysis

At launch, the EPYC 9555 was priced at $9826, while the EPYC 9845 came in at $13564. On launch pricing ($9826 vs $13564), EPYC 9555 was $3738 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9555 delivers 13.6 pts/$ vs 11.3 pts/$ for the EPYC 9845 — making the EPYC 9555 the 18.4% better value option.

Feature	EPYC 9555	EPYC 9845
MSRP	$9826-28%	$13564
Performance per Dollar	13.6+20%	11.3
Release Date	2024	2024

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