EPYC 7451 vs Ryzen 7 5800X

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 7451

2017

Why buy it

✅+100% larger total L3 cache (64 MB vs 32 MB).
✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5800X across 4 shared CPU benchmark tests.
❌Lower PassMark (26,639 vs 27,712).
❌71.4% higher power demand at 180W vs 105W.

Ryzen 7 5800X

2020

Why buy it

✅Better for gaming: +30.1% higher average FPS across 4 shared CPU benchmark tests.
✅Draws 105W instead of 180W, a 75W reduction.
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (32 MB vs 64 MB).
❌Less compelling for workstation-style loads than EPYC 7451, which brings 24 cores / 48 threads.
❌Launch MSRP is still $449 MSRP, while EPYC 7451 mostly shows up through inconsistent older-market listings.

EPYC 7451

2017

Ryzen 7 5800X

2020

Why buy it

✅+100% larger total L3 cache (64 MB vs 32 MB).
✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads.

Why buy it

✅Better for gaming: +30.1% higher average FPS across 4 shared CPU benchmark tests.
✅Draws 105W instead of 180W, a 75W reduction.
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5800X across 4 shared CPU benchmark tests.
❌Lower PassMark (26,639 vs 27,712).
❌71.4% higher power demand at 180W vs 105W.

Trade-offs

❌Smaller total L3 cache (32 MB vs 64 MB).
❌Less compelling for workstation-style loads than EPYC 7451, which brings 24 cores / 48 threads.
❌Launch MSRP is still $449 MSRP, while EPYC 7451 mostly shows up through inconsistent older-market listings.

Quick Answers

So, is Ryzen 7 5800X better than EPYC 7451?

Not in a simple one-size-fits-all way. EPYC 7451 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, Ryzen 7 5800X is the better pick here. According to our tests, it delivers 30.1% more average FPS across 4 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 7 5800X is the better fit. You are getting 4% better PassMark, backed by 8 cores and 16 threads.

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

Ryzen 7 5800X is the smarter buy today. Ryzen 7 5800X is at an unclear MSRP at $449 MSRP versus unclear MSRP, and it gives you a 30.1% average FPS lead across 4 shared CPU game tests in our data. It is also 100.0% better value on MSRP (61.7 vs 0.0 PassMark/$), so the better CPU is not just faster, it is also the cleaner value play on paper.

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

Ryzen 7 5800X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2017) and more multi-core headroom with 8 cores / 16 threads instead of 24/48. That extra compute headroom should age better as games, background tasks, and creator workloads get heavier.

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 7451 Benchmark Check

Ryzen 7 5800X Benchmark Check

Path of Exile 2

Preset	EPYC 7451	Ryzen 7 5800X
1080p
low	187 FPS	206 FPS
medium	165 FPS	178 FPS
high	132 FPS	146 FPS
ultra	105 FPS	110 FPS
1440p
low	153 FPS	170 FPS
medium	127 FPS	142 FPS
high	97 FPS	115 FPS
ultra	78 FPS	88 FPS
4K
low	71 FPS	83 FPS
medium	63 FPS	74 FPS
high	48 FPS	59 FPS
ultra	39 FPS	46 FPS

Open EPYC 7451 Open Ryzen 7 5800X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	EPYC 7451	Ryzen 7 5800X
1080p
low	355 FPS	662 FPS
medium	321 FPS	558 FPS
high	271 FPS	466 FPS
ultra	219 FPS	417 FPS
1440p
low	306 FPS	563 FPS
medium	280 FPS	493 FPS
high	239 FPS	423 FPS
ultra	187 FPS	361 FPS
4K
low	191 FPS	350 FPS
medium	176 FPS	308 FPS
high	152 FPS	288 FPS
ultra	122 FPS	250 FPS

Open EPYC 7451 Open Ryzen 7 5800X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	EPYC 7451	Ryzen 7 5800X
1080p
low	620 FPS	693 FPS
medium	518 FPS	651 FPS
high	466 FPS	570 FPS
ultra	399 FPS	464 FPS
1440p
low	517 FPS	693 FPS
medium	432 FPS	573 FPS
high	378 FPS	498 FPS
ultra	325 FPS	413 FPS
4K
low	383 FPS	484 FPS
medium	308 FPS	410 FPS
high	270 FPS	363 FPS
ultra	220 FPS	302 FPS

Open EPYC 7451 Open Ryzen 7 5800X

League of Legends

League of Legends

Valorant

Preset	EPYC 7451	Ryzen 7 5800X
1080p
low	666 FPS	693 FPS
medium	666 FPS	693 FPS
high	659 FPS	693 FPS
ultra	571 FPS	693 FPS
1440p
low	666 FPS	693 FPS
medium	587 FPS	693 FPS
high	503 FPS	672 FPS
ultra	426 FPS	593 FPS
4K
low	476 FPS	604 FPS
medium	429 FPS	550 FPS
high	378 FPS	495 FPS
ultra	324 FPS	436 FPS

Open EPYC 7451 Open Ryzen 7 5800X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of EPYC 7451 and Ryzen 7 5800X

EPYC 7451

The EPYC 7451 is manufactured by AMD. It was released in 29 June 2017 (8 years ago). It is based on the Naples (2017−2018) architecture. It features 24 cores and 48 threads. Base frequency is 2.3 GHz, with boost up to 3.2 GHz. L3 cache: 64 MB (total). L2 cache: 512K (per core). Built on 14 nm process technology. Socket: TR4. Thermal design power (TDP): 180 Watt. Memory support: DDR4 Eight-channel. Passmark benchmark score: 26,639 points. Launch price was $2,400.

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.

⚡

Processing Power

The EPYC 7451 packs 24 cores / 48 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the EPYC 7451 has 16 more cores. Boost clocks reach 3.2 GHz on the EPYC 7451 versus 4.7 GHz on the Ryzen 7 5800X — a 38% clock advantage for the Ryzen 7 5800X (base: 2.3 GHz vs 3.8 GHz). The EPYC 7451 uses the Naples (2017−2018) architecture (14 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the EPYC 7451 scores 26,639 against the Ryzen 7 5800X's 27,712 — a 3.9% lead for the Ryzen 7 5800X. L3 cache: 64 MB (total) on the EPYC 7451 vs 32 MB on the Ryzen 7 5800X.

Feature	EPYC 7451	Ryzen 7 5800X
Cores / Threads	24 / 48+200%	8 / 16
Boost Clock	3.2 GHz	4.7 GHz+47%
Base Clock	2.3 GHz	3.8 GHz+65%
L3 Cache	64 MB (total)+100%	32 MB
L2 Cache	512K (per core)	512K (per core)
Process	14 nm	7 nm, 12 nm-50%
Architecture	Naples (2017−2018)	Vermeer (Zen 3) (2020−2022)
PassMark	26,639	27,712+4%