Ryzen 9 5900X vs Xeon E-2456

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.

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +27.9% higher average FPS across 50 shared CPU benchmark tests.
✅+255.6% larger total L3 cache (64 MB vs 18 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Launch MSRP is still $549 MSRP, while Xeon E-2456 mostly shows up through inconsistent older-market listings.
❌31.3% higher power demand at 105W vs 80W.
❌Older platform position on AM4 with DDR4, while Xeon E-2456 moves to LGA1700 and DDR5.

Xeon E-2456

2023

Why buy it

✅Draws 80W instead of 105W, a 25W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (20,705 vs 38,955).
❌Smaller total L3 cache (18 MB vs 64 MB).

Ryzen 9 5900X

2020

Xeon E-2456

2023

Why buy it

✅Better for gaming: +27.9% higher average FPS across 50 shared CPU benchmark tests.
✅+255.6% larger total L3 cache (64 MB vs 18 MB).
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Why buy it

✅Draws 80W instead of 105W, a 25W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.

Trade-offs

❌Launch MSRP is still $549 MSRP, while Xeon E-2456 mostly shows up through inconsistent older-market listings.
❌31.3% higher power demand at 105W vs 80W.
❌Older platform position on AM4 with DDR4, while Xeon E-2456 moves to LGA1700 and DDR5.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower PassMark (20,705 vs 38,955).
❌Smaller total L3 cache (18 MB vs 64 MB).

Quick Answers

So, is Ryzen 9 5900X better than Xeon E-2456?

Not in a simple one-size-fits-all way. Xeon E-2456 makes more sense for workstation-style multi-core throughput, while Ryzen 9 5900X 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 9 5900X is the better pick here. According to our tests, it delivers 27.9% more average FPS across 50 shared CPU game tests.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 5900X is the better fit. You are getting 88.1% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 255.6% larger total L3 cache (64 MB vs 18 MB).

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

Ryzen 9 5900X is the smarter buy today. Ryzen 9 5900X is at an unclear MSRP at $549 MSRP versus unclear MSRP, and it gives you a 27.9% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (71.0 vs 0.0 PassMark/$), 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?

Xeon E-2456 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2020) and a healthier platform with LGA1700 and DDR5 instead of AM4. 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.

Ryzen 9 5900X Benchmark Check

Xeon E-2456 Benchmark Check

Path of Exile 2

Preset	Ryzen 9 5900X	Xeon E-2456
1080p
low	323 FPS	267 FPS
medium	291 FPS	253 FPS
high	243 FPS	214 FPS
ultra	193 FPS	183 FPS
1440p
low	307 FPS	235 FPS
medium	248 FPS	199 FPS
high	192 FPS	162 FPS
ultra	157 FPS	142 FPS
4K
low	193 FPS	164 FPS
medium	156 FPS	139 FPS
high	115 FPS	108 FPS
ultra	103 FPS	95 FPS

Open Ryzen 9 5900X Open Xeon E-2456

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 5900X	Xeon E-2456
1080p
low	772 FPS	518 FPS
medium	647 FPS	483 FPS
high	508 FPS	408 FPS
ultra	450 FPS	364 FPS
1440p
low	619 FPS	493 FPS
medium	536 FPS	428 FPS
high	443 FPS	364 FPS
ultra	364 FPS	313 FPS
4K
low	365 FPS	312 FPS
medium	318 FPS	279 FPS
high	289 FPS	259 FPS
ultra	255 FPS	222 FPS

Open Ryzen 9 5900X Open Xeon E-2456

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 5900X	Xeon E-2456
1080p
low	832 FPS	518 FPS
medium	645 FPS	518 FPS
high	558 FPS	518 FPS
ultra	459 FPS	518 FPS
1440p
low	721 FPS	518 FPS
medium	565 FPS	518 FPS
high	488 FPS	518 FPS
ultra	407 FPS	469 FPS
4K
low	511 FPS	502 FPS
medium	421 FPS	448 FPS
high	374 FPS	391 FPS
ultra	308 FPS	327 FPS

Open Ryzen 9 5900X Open Xeon E-2456

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 5900X	Xeon E-2456
1080p
low	974 FPS	518 FPS
medium	974 FPS	518 FPS
high	934 FPS	518 FPS
ultra	826 FPS	518 FPS
1440p
low	959 FPS	518 FPS
medium	843 FPS	518 FPS
high	726 FPS	518 FPS
ultra	617 FPS	518 FPS
4K
low	694 FPS	518 FPS
medium	621 FPS	492 FPS
high	541 FPS	432 FPS
ultra	437 FPS	364 FPS

Open Ryzen 9 5900X Open Xeon E-2456

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 5900X and Xeon E-2456

Ryzen 9 5900X

The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.

Xeon E-2456

The Xeon E-2456 is manufactured by Intel. It was released in 14 December 2023 (1 year ago). It is based on the Raptor Lake-S (2023−2024) architecture. It features 6 cores and 12 threads. Base frequency is 3.3 GHz, with boost up to 5.1 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 80 Watt. Memory support: DDR5-4800. Passmark benchmark score: 20,705 points. Launch price was $375.

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Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon E-2456 offers 6 cores / 12 threads — the Ryzen 9 5900X has 6 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 5.1 GHz on the Xeon E-2456 — a 6.1% clock advantage for the Xeon E-2456 (base: 3.7 GHz vs 3.3 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon E-2456 uses Raptor Lake-S (2023−2024) (Intel 7 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon E-2456's 20,705 — a 61.2% lead for the Ryzen 9 5900X. L3 cache: 64 MB on the Ryzen 9 5900X vs 18 MB (total) on the Xeon E-2456.

Feature	Ryzen 9 5900X	Xeon E-2456
Cores / Threads	12 / 24+100%	6 / 12
Boost Clock	4.8 GHz	5.1 GHz+6%
Base Clock	3.7 GHz+12%	3.3 GHz
L3 Cache	64 MB+256%	18 MB (total)
L2 Cache	512K (per core)	1.25 MB (per core)+150%
Process	7 nm, 12 nm	Intel 7 nm
Architecture	Vermeer (Zen3) (2020−2022)	Raptor Lake-S (2023−2024)
PassMark	38,955+88%	20,705
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174	—
Geekbench 6 Multi	11,888	—

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Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon E-2456 uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard.

Feature	Ryzen 9 5900X	Xeon E-2456
Socket	AM4	LGA1700
PCIe Generation	PCIe 4.0	PCIe 5.0+25%
Max RAM Speed	DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	24	—

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Advanced Features

Virtualization: AMD-V (Ryzen 9 5900X) / not specified (Xeon E-2456). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.