EPYC 9455P vs Ryzen 7 5800X

CPU

GPU

EPYC 9455P

48 Cores96 Thrd300 WWMax: 4.4 GHz2024

EPYC family

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Ryzen 7 5800X

8 Cores16 Thrd105 WWMax: 4.7 GHz2020

Ryzen family

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EPYC 9455P vs Ryzen 7 5800X Performance Spectrum

EPYC 9455P

48 / 96

116,926

+321.9%

Ryzen Threadripper 3970X

Ryzen Threadripper PRO 5975WX

Ryzen Threadripper 7960X

Ryzen Threadripper 7970X

Ryzen Threadripper PRO 7985WX

Ryzen Threadripper 7980X

Ryzen Threadripper 9980X

Ryzen Threadripper PRO 9985WX

Ryzen 7 5800X

8 / 16

27,712

0.0%

Ryzen Threadripper 3990X

Ryzen Threadripper PRO 9965WX

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 9455P vs Ryzen 7 5800X 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 9455P vs Ryzen 7 5800X: Pros, Cons & Final Verdict

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

EPYC 9455P

2024

Why buy it

✅Massive L3 cache advantage with 256 MB vs 32 MB, which is a real win in CPU-limited gaming.
✅Better for workstations and heavier parallel workloads: 48 cores / 96 threads, plus 128 PCIe lanes vs 24.
✅Newer platform on SP5 with DDR5 support instead of AM4 and DDR4.
✅433.3% more PCIe lanes (128 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 24.3 vs 61.7 PassMark/$ ($4,819 MSRP vs $449 MSRP).
❌185.7% higher power demand at 300W vs 105W.

Ryzen 7 5800X

2020

Why buy it

✅Costs $4,370 less on MSRP ($449 MSRP vs $4,819 MSRP).
✅Delivers 154.4% more PassMark for each dollar spent, at 61.7 vs 24.3 PassMark/$ ($449 MSRP vs $4,819 MSRP).
✅Draws 105W instead of 300W, a 195W reduction.

Trade-offs

❌No 3D V-Cache or similar L3 advantage, which matters in CPU-limited gaming (32 MB vs 256 MB).
❌Lower PassMark (27,712 vs 116,926).
❌Less compelling for workstation-style loads than EPYC 9455P, which brings 48 cores / 96 threads and 128 PCIe lanes.
❌Older platform position on AM4 with DDR4, while EPYC 9455P moves to SP5 and DDR5.

Quick Answers

So, is EPYC 9455P better than Ryzen 7 5800X?

Not really, because they are built for different jobs. EPYC 9455P makes more sense for workstation-style multi-core throughput, while Ryzen 7 5800X is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, EPYC 9455P is the better pick. According to our tests, it delivers 2.3% more average FPS across 50 shared CPU game tests. It also has a clear cache advantage at 256 MB versus 32 MB.

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

For streaming, content creation, and heavier multitasking, EPYC 9455P is the stronger fit. You are getting 321.9% better PassMark, backed by 48 cores and 96 threads. It also has the larger cache pool with 700% larger total L3 cache (256 MB vs 32 MB).

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

EPYC 9455P is still the faster CPU overall, but Ryzen 7 5800X is easier to justify if budget matters more than peak performance. EPYC 9455P comes in 973.3% more expensive on MSRP at $4,819 MSRP versus $449 MSRP, and it still gives you a 2.3% average FPS lead across 50 shared CPU game tests in our data. Ryzen 7 5800X is also 154.4% better value on MSRP (61.7 vs 24.3 PassMark/$), 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 9455P makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2020), a healthier platform with SP5 and DDR5 instead of AM4, 3D V-Cache and a much larger 256 MB L3 cache instead of 32 MB, and more multi-core headroom with 48 cores / 96 threads instead of 8/16. That gives you a healthier platform runway for motherboard, RAM, and later CPU upgrades.

EPYC 9455P vs Ryzen 7 5800X Technical Specifications

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

EPYC 9455P

The EPYC 9455P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 48 cores and 96 threads. Base frequency is 3.15 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): 300 Watt. Memory support: DDR5. Passmark benchmark score: 116,926 points. Launch price was $4,819.

Ryzen 7 5800X

The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 27,712 points. Launch price was $449.

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Processing Power

The EPYC 9455P packs 48 cores / 96 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the EPYC 9455P has 40 more cores. Boost clocks reach 4.4 GHz on the EPYC 9455P versus 4.7 GHz on the Ryzen 7 5800X — a 6.6% clock advantage for the Ryzen 7 5800X (base: 3.15 GHz vs 3.8 GHz). The EPYC 9455P uses the Turin (2024) architecture (4 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the EPYC 9455P scores 116,926 against the Ryzen 7 5800X's 27,712 — a 123.4% lead for the EPYC 9455P. L3 cache: 256 MB (total) on the EPYC 9455P vs 32 MB on the Ryzen 7 5800X.

Feature	EPYC 9455P	Ryzen 7 5800X
Cores / Threads	48 / 96+500%	8 / 16
Boost Clock	4.4 GHz	4.7 GHz+7%
Base Clock	3.15 GHz	3.8 GHz+21%
L3 Cache	256 MB (total)+700%	32 MB
L2 Cache	1 MB (per core)	512K (per core)+51100%
Process	4 nm-43%	7 nm, 12 nm
Architecture	Turin (2024)	Vermeer (Zen 3) (2020−2022)
PassMark	116,926+322%	27,712
Geekbench 6 Single	1,962	—
Geekbench 6 Multi	1,898	—

🧠

Memory & Platform

The EPYC 9455P uses the SP5 socket (PCIe 5.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-6000 on the EPYC 9455P versus DDR4-3200 on the Ryzen 7 5800X — the EPYC 9455P supports 87.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 9455P supports up to 9 TB of RAM compared to 128 GB — 7100% more capacity for professional workloads. Memory channels: 12 (EPYC 9455P) vs 2 (Ryzen 7 5800X). PCIe lanes: 128 (EPYC 9455P) vs 24 (Ryzen 7 5800X) — the EPYC 9455P offers 104 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP5 (EPYC 9455P) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X).

Feature	EPYC 9455P	Ryzen 7 5800X
Socket	SP5	AM4
PCIe Generation	PCIe 5.0+25%	PCIe 4.0
Max RAM Speed	DDR5-6000+88%	DDR4-3200
Max RAM Capacity	9 TB+7100%	128 GB
RAM Channels	12+500%	2
ECC Support	Yes	Yes
PCIe Lanes	128+433%	24

🔧

Advanced Features

Virtualization support: AMD-V, SEV-SNP (EPYC 9455P) vs AMD-V (Ryzen 7 5800X). Primary use case: EPYC 9455P targets Data Center / Single Socket, Ryzen 7 5800X targets Desktop. Direct competitor: EPYC 9455P rivals Xeon 6766E.

Feature	EPYC 9455P	Ryzen 7 5800X
Integrated GPU	No	No
Unlocked	—	Yes
AVX-512	—	No
Virtualization	AMD-V, SEV-SNP	AMD-V
Target Use	Data Center / Single Socket	Desktop

💰

Value Analysis

At launch, the EPYC 9455P was priced at $4819, while the Ryzen 7 5800X came in at $449. On launch pricing ($4819 vs $449), Ryzen 7 5800X was $4370 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9455P delivers 24.3 pts/$ vs 61.7 pts/$ for the Ryzen 7 5800X — making the Ryzen 7 5800X the 87.1% better value option.

Feature	EPYC 9455P	Ryzen 7 5800X
MSRP	$4819	$449-91%
Performance per Dollar	24.3	61.7+154%
Release Date	2024	2020

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