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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, productivity performance, platform differences, power efficiency, pricing context, and upgrade path so you can see which CPU actually makes more sense.

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.

EPYC 9455P

2024

Ryzen 7 5800X

2020

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.

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

❌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.

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 in a simple one-size-fits-all way. EPYC 9455P makes more sense for workstation-style multi-core throughput, while Ryzen 7 5800X is the better mainstream desktop choice for gaming, platform cost, and day-to-day practicality.

Which one is better for gaming?

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

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

For streaming, content creation, and heavier multitasking, EPYC 9455P is the better fit. You are getting 321.9% better PassMark, backed by 48 cores and 96 threads. It also carries 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 makes more sense if price matters more than absolute performance. EPYC 9455P is 973.3% more expensive on MSRP at $4,819 MSRP versus $449 MSRP, and it gives you a 2.3% average FPS lead across 50 shared CPU game tests in our data. Ryzen 7 5800X is also 154.4% better value on MSRP (61.7 vs 24.3 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

EPYC 9455P is the more future-proof choice 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 should give you a better long-term upgrade path for motherboard, RAM, and future CPU swaps.

Games Benchmarks

Paired with RTX 4090

To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.

Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.

EPYC 9455P Benchmark Check

Ryzen 7 5800X Benchmark Check

Path of Exile 2

Preset	EPYC 9455P	Ryzen 7 5800X
1080p
low	171 FPS	206 FPS
medium	142 FPS	178 FPS
high	122 FPS	146 FPS
ultra	99 FPS	110 FPS
1440p
low	150 FPS	170 FPS
medium	121 FPS	142 FPS
high	99 FPS	115 FPS
ultra	83 FPS	88 FPS
4K
low	84 FPS	83 FPS
medium	73 FPS	74 FPS
high	57 FPS	59 FPS
ultra	47 FPS	46 FPS

Open EPYC 9455P Open Ryzen 7 5800X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 9455P	Ryzen 7 5800X
1080p
low	655 FPS	662 FPS
medium	566 FPS	558 FPS
high	459 FPS	466 FPS
ultra	397 FPS	417 FPS
1440p
low	546 FPS	563 FPS
medium	483 FPS	493 FPS
high	404 FPS	423 FPS
ultra	328 FPS	361 FPS
4K
low	331 FPS	350 FPS
medium	295 FPS	308 FPS
high	268 FPS	288 FPS
ultra	236 FPS	250 FPS

Open EPYC 9455P Open Ryzen 7 5800X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 9455P	Ryzen 7 5800X
1080p
low	747 FPS	693 FPS
medium	634 FPS	651 FPS
high	590 FPS	570 FPS
ultra	519 FPS	464 FPS
1440p
low	561 FPS	693 FPS
medium	474 FPS	573 FPS
high	434 FPS	498 FPS
ultra	376 FPS	413 FPS
4K
low	405 FPS	484 FPS
medium	326 FPS	410 FPS
high	288 FPS	363 FPS
ultra	229 FPS	302 FPS

Open EPYC 9455P Open Ryzen 7 5800X

League of Legends

League of Legends

Valorant

Preset	EPYC 9455P	Ryzen 7 5800X
1080p
low	993 FPS	693 FPS
medium	892 FPS	693 FPS
high	767 FPS	693 FPS
ultra	692 FPS	693 FPS
1440p
low	799 FPS	693 FPS
medium	696 FPS	693 FPS
high	594 FPS	672 FPS
ultra	525 FPS	593 FPS
4K
low	567 FPS	604 FPS
medium	503 FPS	550 FPS
high	441 FPS	495 FPS
ultra	387 FPS	436 FPS

Open EPYC 9455P Open Ryzen 7 5800X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 9455P and Ryzen 7 5800X

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)+100%	512K (per core)
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	—

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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 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 5800X supports up to 128 GB of RAM compared to 9 TB — 173.7% 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+25%	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

The EPYC 9455P launched at $4819 MSRP, while the Ryzen 7 5800X debuted at $449. On MSRP ($4819 vs $449), the Ryzen 7 5800X is $4370 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 9455P delivers 24.3 pts/$ vs 61.7 pts/$ for the Ryzen 7 5800X — making the Ryzen 7 5800X the 87.1% better value option.