Ryzen 9 5900X vs Xeon E-2378

Ryzen 9 5900X vs Xeon E-2378 Performance Spectrum

Ryzen 9 5900X

12 / 24

38,955

+128.2%

Ryzen Threadripper 9960X

Ryzen Threadripper PRO 9975WX

Xeon E-2378

8 / 16

17,069

0.0%

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.

Ryzen 9 5900X vs Xeon E-2378 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.

Ryzen 9 5900X vs Xeon E-2378: Pros, Cons & Final Verdict

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

Ryzen 9 5900X

2020

Why buy it

✅Better for gaming: +27.1% higher average FPS across 50 shared CPU benchmark tests.
✅+300% larger total L3 cache (64 MB vs 16 MB).
✅Delivers 50.5% more PassMark for each dollar spent, at 71.0 vs 47.2 PassMark/$ ($549 MSRP vs $362 MSRP).
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌
51.7% HIGHER MSRP
$549 MSRPvs$362 MSRP
❌61.5% higher power demand at 105W vs 65W.
❌No AVX-512 support for niche heavy compute workloads where it can matter.

Xeon E-2378

2021

Why buy it

✅Costs $187 less on MSRP ($362 MSRP vs $549 MSRP).
✅Draws 65W instead of 105W, a 40W reduction.
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
❌Lower Geekbench multi-core (9,986 vs 11,888).
❌Smaller total L3 cache (16 MB vs 64 MB).
❌Lower PassMark per dollar, at 47.2 vs 71.0 PassMark/$ ($362 MSRP vs $549 MSRP).

Quick Answers

So, is Ryzen 9 5900X better than Xeon E-2378?

Not really, because they are built for different jobs. Xeon E-2378 makes more sense for workstation-style multi-core throughput, while Ryzen 9 5900X is the more practical desktop choice for gaming, platform cost, and everyday use.

Which one is better for gaming?

If gaming is the priority, Ryzen 9 5900X is the better pick. According to our tests, it delivers 27.1% 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 stronger fit. You are getting 19% better Geekbench multi-core, backed by 12 cores and 24 threads. It also has the larger cache pool with 300% larger total L3 cache (64 MB vs 16 MB).

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

Ryzen 9 5900X is the better buy right now. Ryzen 9 5900X comes in 51.7% more expensive on MSRP at $549 MSRP versus $362 MSRP, and it still gives you a 27.1% average FPS lead across 50 shared CPU game tests in our data. It is also 50.5% better value on MSRP (71.0 vs 47.2 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Xeon E-2378 makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2021 vs 2020) and AVX-512 support for heavier modern compute workloads. That makes it the safer long-term bet.

Ryzen 9 5900X vs Xeon E-2378 Technical Specifications

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

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-2378

The Xeon E-2378 is manufactured by Intel. It was released in 2015-01-01. It is based on the Rocket Lake-E (2021) architecture. It features 8 cores and 16 threads. Base frequency is 2.6 GHz, with boost up to 4.8 GHz. L3 cache: 16 MB (total). L2 cache: 512K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 17,069 points. Launch price was $800.

⚡

Processing Power

The Ryzen 9 5900X packs 12 cores / 24 threads, while the Xeon E-2378 offers 8 cores / 16 threads — the Ryzen 9 5900X has 4 more cores. Boost clocks reach 4.8 GHz on the Ryzen 9 5900X versus 4.8 GHz on the Xeon E-2378 — identical boost frequencies (base: 3.7 GHz vs 2.6 GHz). The Ryzen 9 5900X uses the Vermeer (Zen3) (2020−2022) architecture (7 nm, 12 nm), while the Xeon E-2378 uses Rocket Lake-E (2021) (14 nm). In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon E-2378's 17,069 — a 78.1% lead for the Ryzen 9 5900X. Geekbench 6 single-core — the metric most relevant to gaming — records 2,174 vs 1,821, a 17.7% lead for the Ryzen 9 5900X that directly translates to higher frame rates. Multi-core Geekbench: 11,888 vs 9,986 (17.4% advantage for the Ryzen 9 5900X). L3 cache: 64 MB on the Ryzen 9 5900X vs 16 MB (total) on the Xeon E-2378.

Feature	Ryzen 9 5900X	Xeon E-2378
Cores / Threads	12 / 24+50%	8 / 16
Boost Clock	4.8 GHz	4.8 GHz
Base Clock	3.7 GHz+42%	2.6 GHz
L3 Cache	64 MB+300%	16 MB (total)
L2 Cache	512K (per core)	512K (per core)
Process	7 nm, 12 nm-50%	14 nm
Architecture	Vermeer (Zen3) (2020−2022)	Rocket Lake-E (2021)
PassMark	38,955+128%	17,069
Cinebench R23 Multi	21,000	—
Geekbench 6 Single	2,174+19%	1,821
Geekbench 6 Multi	11,888+19%	9,986

🧠

Memory & Platform

The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon E-2378 uses LGA1200 (PCIe 4.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 5900X) vs 20 (Xeon E-2378) — the Ryzen 9 5900X offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and C252,C256 (Xeon E-2378).

Feature	Ryzen 9 5900X	Xeon E-2378
Socket	AM4	LGA1200
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	DDR4-3200
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	Yes	Yes
PCIe Lanes	24+20%	20

🔧

Advanced Features

Only the Xeon E-2378 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 5900X) vs Yes (Xeon E-2378). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.

Feature	Ryzen 9 5900X	Xeon E-2378
Integrated GPU	No	No
Unlocked	Yes	—
AVX-512	No	Yes
Virtualization	AMD-V	Yes
Target Use	Workstation	—

💰

Value Analysis

At launch, the Ryzen 9 5900X was priced at $549, while the Xeon E-2378 came in at $362. On launch pricing ($549 vs $362), Xeon E-2378 was $187 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 47.2 pts/$ for the Xeon E-2378 — making the Ryzen 9 5900X the 40.3% better value option.

Feature	Ryzen 9 5900X	Xeon E-2378
MSRP	$549	$362-34%
Performance per Dollar	71.0+50%	47.2
Release Date	2020	2021

Search Ryzen 9 5900X on Amazon

Search Xeon E-2378 on Amazon

Affiliate Disclosure

ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.