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.

Core i5-12400F

2022

Why buy it

✅Costs $865 less on MSRP ($174 MSRP vs $1,039 MSRP).
✅Delivers 214.3% more PassMark for each dollar spent, at 112.3 vs 35.7 PassMark/$ ($174 MSRP vs $1,039 MSRP).
✅Draws 65W instead of 200W, a 135W reduction.
✅Includes a boxed cooler (Yes), unlike Xeon w5-2455X.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon w5-2455X across 4 shared CPU benchmark tests.
❌Lower PassMark (19,532 vs 37,109).
❌Smaller total L3 cache (18 MB vs 30 MB).
❌Less compelling for workstation-style loads than Xeon w5-2455X, which brings 12 cores / 24 threads and 64 PCIe lanes.

Xeon w5-2455X

2023

Why buy it

✅Better for gaming: +49.2% higher average FPS across 4 shared CPU benchmark tests.
✅+66.7% larger total L3 cache (30 MB vs 18 MB).
✅Better for workstations and heavier parallel workloads: 12 cores / 24 threads, plus 64 PCIe lanes vs 20.
✅220% more PCIe lanes (64 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark per dollar, at 35.7 vs 112.3 PassMark/$ ($1,039 MSRP vs $174 MSRP).
❌207.7% higher power demand at 200W vs 65W.
❌No boxed cooler included, unlike Core i5-12400F.

Core i5-12400F

2022

Xeon w5-2455X

2023

Why buy it

✅Costs $865 less on MSRP ($174 MSRP vs $1,039 MSRP).
✅Delivers 214.3% more PassMark for each dollar spent, at 112.3 vs 35.7 PassMark/$ ($174 MSRP vs $1,039 MSRP).
✅Draws 65W instead of 200W, a 135W reduction.
✅Includes a boxed cooler (Yes), unlike Xeon w5-2455X.

Why buy it

✅Better for gaming: +49.2% higher average FPS across 4 shared CPU benchmark tests.
✅+66.7% larger total L3 cache (30 MB vs 18 MB).
✅Better for workstations and heavier parallel workloads: 12 cores / 24 threads, plus 64 PCIe lanes vs 20.
✅220% more PCIe lanes (64 vs 20) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon w5-2455X across 4 shared CPU benchmark tests.
❌Lower PassMark (19,532 vs 37,109).
❌Smaller total L3 cache (18 MB vs 30 MB).
❌Less compelling for workstation-style loads than Xeon w5-2455X, which brings 12 cores / 24 threads and 64 PCIe lanes.

Trade-offs

❌Lower PassMark per dollar, at 35.7 vs 112.3 PassMark/$ ($1,039 MSRP vs $174 MSRP).
❌207.7% higher power demand at 200W vs 65W.
❌No boxed cooler included, unlike Core i5-12400F.

Quick Answers

So, is Xeon w5-2455X better than Core i5-12400F?

Not in a simple one-size-fits-all way. Xeon w5-2455X makes more sense for workstation-style multi-core throughput, while Core i5-12400F 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, Xeon w5-2455X is the better pick here. According to our tests, it delivers 49.2% 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, Xeon w5-2455X is the better fit. You are getting 90% better PassMark, backed by 12 cores and 24 threads. It also carries the larger cache pool with 66.7% larger total L3 cache (30 MB vs 18 MB).

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

Xeon w5-2455X is still the faster CPU overall, but Core i5-12400F makes more sense if price matters more than absolute performance. Xeon w5-2455X is 497.1% more expensive on MSRP at $1,039 MSRP versus $174 MSRP, and it gives you a 49.2% average FPS lead across 4 shared CPU game tests in our data. Core i5-12400F is also 214.3% better value on MSRP (112.3 vs 35.7 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Xeon w5-2455X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2023 vs 2022), 66.7% larger total L3 cache (30 MB vs 18 MB), more multi-core headroom with 12 cores / 24 threads instead of 6/12, and AVX-512 support for heavier modern compute workloads. 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.

Core i5-12400F Benchmark Check

Xeon w5-2455X Benchmark Check

Path of Exile 2

Preset	Core i5-12400F	Xeon w5-2455X
1080p
low	183 FPS	186 FPS
medium	168 FPS	155 FPS
high	139 FPS	129 FPS
ultra	119 FPS	106 FPS
1440p
low	153 FPS	151 FPS
medium	132 FPS	121 FPS
high	106 FPS	98 FPS
ultra	89 FPS	81 FPS
4K
low	87 FPS	83 FPS
medium	81 FPS	71 FPS
high	64 FPS	58 FPS
ultra	49 FPS	45 FPS

Open Core i5-12400F Open Xeon w5-2455X

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-12400F	Xeon w5-2455X
1080p
low	471 FPS	589 FPS
medium	397 FPS	493 FPS
high	341 FPS	404 FPS
ultra	301 FPS	363 FPS
1440p
low	407 FPS	500 FPS
medium	351 FPS	435 FPS
high	309 FPS	366 FPS
ultra	265 FPS	314 FPS
4K
low	282 FPS	311 FPS
medium	248 FPS	272 FPS
high	229 FPS	249 FPS
ultra	196 FPS	220 FPS

Open Core i5-12400F Open Xeon w5-2455X

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-12400F	Xeon w5-2455X
1080p
low	488 FPS	928 FPS
medium	488 FPS	928 FPS
high	488 FPS	928 FPS
ultra	488 FPS	861 FPS
1440p
low	488 FPS	869 FPS
medium	488 FPS	765 FPS
high	485 FPS	726 FPS
ultra	434 FPS	651 FPS
4K
low	442 FPS	560 FPS
medium	389 FPS	459 FPS
high	337 FPS	417 FPS
ultra	274 FPS	338 FPS

Open Core i5-12400F Open Xeon w5-2455X

League of Legends

League of Legends

Valorant

Preset	Core i5-12400F	Xeon w5-2455X
1080p
low	488 FPS	928 FPS
medium	488 FPS	928 FPS
high	488 FPS	865 FPS
ultra	488 FPS	753 FPS
1440p
low	488 FPS	915 FPS
medium	488 FPS	784 FPS
high	488 FPS	685 FPS
ultra	473 FPS	590 FPS
4K
low	488 FPS	634 FPS
medium	450 FPS	552 FPS
high	391 FPS	495 FPS
ultra	330 FPS	428 FPS

Open Core i5-12400F Open Xeon w5-2455X

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-12400F and Xeon w5-2455X

Core i5-12400F

The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 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): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.

Xeon w5-2455X

The Xeon w5-2455X is manufactured by Intel. It was released in 15 February 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 12 cores and 24 threads. Base frequency is 3.2 GHz, with boost up to 4.6 GHz. L3 cache: 30 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 200 Watt. Memory support: DDR5-4800. Passmark benchmark score: 37,109 points. Launch price was $1,039.

⚡

Processing Power

The Core i5-12400F packs 6 cores / 12 threads, while the Xeon w5-2455X offers 12 cores / 24 threads — the Xeon w5-2455X has 6 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 4.6 GHz on the Xeon w5-2455X — a 4.4% clock advantage for the Xeon w5-2455X (base: 2.5 GHz vs 3.2 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Xeon w5-2455X uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Core i5-12400F scores 19,532 against the Xeon w5-2455X's 37,109 — a 62.1% lead for the Xeon w5-2455X. L3 cache: 18 MB (total) on the Core i5-12400F vs 30 MB on the Xeon w5-2455X.

Feature	Core i5-12400F	Xeon w5-2455X
Cores / Threads	6 / 12	12 / 24+100%
Boost Clock	4.4 GHz	4.6 GHz+5%
Base Clock	2.5 GHz	3.2 GHz+28%
L3 Cache	18 MB (total)	30 MB+67%
L2 Cache	1.25 MB (per core)	2 MB (per core)+60%
Process	Intel 7 nm	Intel 7 nm
Architecture	Alder Lake-S (2022)	Sapphire Rapids (2023−2024)
PassMark	19,532	37,109+90%
Cinebench R23 Multi	12,380	—
Geekbench 6 Single	1,700	—
Geekbench 6 Multi	657	—

🧠

Memory & Platform

The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Xeon w5-2455X uses LGA4677 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800, DDR4-3200 on the Core i5-12400F versus 4800 on the Xeon w5-2455X — the Xeon w5-2455X supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon w5-2455X supports up to 2048 of RAM compared to 128 GB — 176.5% more capacity for professional workloads. Memory channels: 2 (Core i5-12400F) vs 4 (Xeon w5-2455X). PCIe lanes: 20 (Core i5-12400F) vs 64 (Xeon w5-2455X) — the Xeon w5-2455X offers 44 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H610,B660,H670,Z690,B760,H770,Z790 (Core i5-12400F) and W790 (Xeon w5-2455X).

Feature	Core i5-12400F	Xeon w5-2455X
Socket	LGA1700	LGA4677
PCIe Generation	PCIe 3.0	PCIe 4.0+33%
Max RAM Speed	DDR5-4800, DDR4-3200	4800+95900%
Max RAM Capacity	128 GB+6553500%	2048
RAM Channels	2	4+100%
ECC Support	No	Yes
PCIe Lanes	20	64+220%

🔧

Advanced Features

Virtualization support: VT-x, VT-d, EPT (Core i5-12400F) vs VT-x, VT-d (Xeon w5-2455X). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600; Xeon w5-2455X rivals Threadripper 7960X.

Feature	Core i5-12400F	Xeon w5-2455X
Integrated GPU	No	No
IGPU Model	—	None
Unlocked	—	Yes
AVX-512	—	Yes
Virtualization	VT-x, VT-d, EPT	VT-x, VT-d
Target Use	Gaming Performance/Value	—

💰

Value Analysis

The Core i5-12400F launched at $174 MSRP, while the Xeon w5-2455X debuted at $1039. On MSRP ($174 vs $1039), the Core i5-12400F is $865 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 35.7 pts/$ for the Xeon w5-2455X — making the Core i5-12400F the 103.4% better value option.