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 $168 less on MSRP ($174 MSRP vs $342 MSRP).
✅Delivers 54.9% more PassMark for each dollar spent, at 112.3 vs 72.5 PassMark/$ ($174 MSRP vs $342 MSRP).
✅Draws 65W instead of 205W, a 140W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of LGA3647 and DDR4.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Lower PassMark (19,532 vs 24,786).
❌Smaller total L3 cache (18 MB vs 22 MB).
❌Less compelling for workstation-style loads than Xeon Gold 6143, which brings 16 cores / 32 threads.

Xeon Gold 6143

2017

Why buy it

✅+26.9% higher PassMark.
✅+22.2% larger total L3 cache (22 MB vs 18 MB).
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads.

Trade-offs

❌Lower PassMark per dollar, at 72.5 vs 112.3 PassMark/$ ($342 MSRP vs $174 MSRP).
❌215.4% higher power demand at 205W vs 65W.
❌Older platform position on LGA3647 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.
❌No boxed cooler included, unlike Core i5-12400F.

Core i5-12400F

2022

Xeon Gold 6143

2017

Why buy it

✅Costs $168 less on MSRP ($174 MSRP vs $342 MSRP).
✅Delivers 54.9% more PassMark for each dollar spent, at 112.3 vs 72.5 PassMark/$ ($174 MSRP vs $342 MSRP).
✅Draws 65W instead of 205W, a 140W reduction.
✅Newer platform on LGA1700 with DDR5 support instead of LGA3647 and DDR4.
✅100+% more PCIe lanes (20 vs 0) for storage and expansion-heavy builds.

Why buy it

✅+26.9% higher PassMark.
✅+22.2% larger total L3 cache (22 MB vs 18 MB).
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads.

Trade-offs

❌Lower PassMark (19,532 vs 24,786).
❌Smaller total L3 cache (18 MB vs 22 MB).
❌Less compelling for workstation-style loads than Xeon Gold 6143, which brings 16 cores / 32 threads.

Trade-offs

❌Lower PassMark per dollar, at 72.5 vs 112.3 PassMark/$ ($342 MSRP vs $174 MSRP).
❌215.4% higher power demand at 205W vs 65W.
❌Older platform position on LGA3647 with DDR4, while Core i5-12400F moves to LGA1700 and DDR5.
❌No boxed cooler included, unlike Core i5-12400F.

Quick Answers

So, is Core i5-12400F better than Xeon Gold 6143?

Not in a simple one-size-fits-all way. Xeon Gold 6143 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 streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon Gold 6143 is the better fit. You are getting 26.9% better PassMark, backed by 16 cores and 32 threads. It also carries the larger cache pool with 22.2% larger total L3 cache (22 MB vs 18 MB).

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

Core i5-12400F is the smarter buy today. Core i5-12400F is $168 cheaper on MSRP at $174 MSRP versus $342 MSRP, and it gives you a 1.1% average FPS lead across 50 shared CPU game tests in our data. The trade-off is that Xeon Gold 6143 is still stronger for heavier multi-core work with 26.9% better PassMark. It is also 54.9% better value on MSRP (112.3 vs 72.5 PassMark/$), 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?

Core i5-12400F is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2022 vs 2017) and a healthier platform with LGA1700 and DDR5 instead of LGA3647. 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.

Core i5-12400F Benchmark Check

Xeon Gold 6143 Benchmark Check

Path of Exile 2

Preset	Core i5-12400F	Xeon Gold 6143
1080p
low	183 FPS	183 FPS
medium	168 FPS	147 FPS
high	139 FPS	119 FPS
ultra	119 FPS	93 FPS
1440p
low	153 FPS	146 FPS
medium	132 FPS	114 FPS
high	106 FPS	92 FPS
ultra	89 FPS	72 FPS
4K
low	87 FPS	68 FPS
medium	81 FPS	57 FPS
high	64 FPS	45 FPS
ultra	49 FPS	36 FPS

Open Core i5-12400F Open Xeon Gold 6143

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Core i5-12400F	Xeon Gold 6143
1080p
low	471 FPS	397 FPS
medium	397 FPS	343 FPS
high	341 FPS	286 FPS
ultra	301 FPS	240 FPS
1440p
low	407 FPS	344 FPS
medium	351 FPS	305 FPS
high	309 FPS	254 FPS
ultra	265 FPS	212 FPS
4K
low	282 FPS	222 FPS
medium	248 FPS	198 FPS
high	229 FPS	176 FPS
ultra	196 FPS	144 FPS

Open Core i5-12400F Open Xeon Gold 6143

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Core i5-12400F	Xeon Gold 6143
1080p
low	488 FPS	620 FPS
medium	488 FPS	620 FPS
high	488 FPS	620 FPS
ultra	488 FPS	620 FPS
1440p
low	488 FPS	620 FPS
medium	488 FPS	620 FPS
high	485 FPS	620 FPS
ultra	434 FPS	589 FPS
4K
low	442 FPS	514 FPS
medium	389 FPS	420 FPS
high	337 FPS	370 FPS
ultra	274 FPS	302 FPS

Open Core i5-12400F Open Xeon Gold 6143

League of Legends

League of Legends

Valorant

Preset	Core i5-12400F	Xeon Gold 6143
1080p
low	488 FPS	620 FPS
medium	488 FPS	620 FPS
high	488 FPS	620 FPS
ultra	488 FPS	620 FPS
1440p
low	488 FPS	620 FPS
medium	488 FPS	620 FPS
high	488 FPS	614 FPS
ultra	473 FPS	519 FPS
4K
low	488 FPS	587 FPS
medium	450 FPS	516 FPS
high	391 FPS	453 FPS
ultra	330 FPS	380 FPS

Open Core i5-12400F Open Xeon Gold 6143

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Core i5-12400F and Xeon Gold 6143

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 Gold 6143

The Xeon Gold 6143 is manufactured by Intel. It was released in 2015-01-01. It features 16 cores and 32 threads. Base frequency is 2.8 GHz, with boost up to 4 GHz. L3 cache: 22 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 205 Watt. Memory support: DDR4-2666. Passmark benchmark score: 24,786 points. Launch price was $800.

⚡

Processing Power

The Core i5-12400F packs 6 cores / 12 threads, while the Xeon Gold 6143 offers 16 cores / 32 threads — the Xeon Gold 6143 has 10 more cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 4 GHz on the Xeon Gold 6143 — a 9.5% clock advantage for the Core i5-12400F (base: 2.5 GHz vs 2.8 GHz). The Core i5-12400F is built on the Alder Lake-S (2022) architecture. In PassMark, the Core i5-12400F scores 19,532 against the Xeon Gold 6143's 24,786 — a 23.7% lead for the Xeon Gold 6143. L3 cache: 18 MB (total) on the Core i5-12400F vs 22 MB on the Xeon Gold 6143.

Feature	Core i5-12400F	Xeon Gold 6143
Cores / Threads	6 / 12	16 / 32+167%
Boost Clock	4.4 GHz+10%	4 GHz
Base Clock	2.5 GHz	2.8 GHz+12%
L3 Cache	18 MB (total)	22 MB+22%
L2 Cache	1.25 MB (per core)	—
Process	Intel 7 nm-50%	14 nm
Architecture	Alder Lake-S (2022)	—
PassMark	19,532	24,786+27%
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 Gold 6143 uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Core i5-12400F	Xeon Gold 6143
Socket	LGA1700	LGA3647
PCIe Generation	PCIe 3.0	PCIe 3.0
Max RAM Speed	DDR5-4800, DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	No	—
PCIe Lanes	20	—

🔧

Advanced Features

Virtualization: VT-x, VT-d, EPT (Core i5-12400F) / not specified (Xeon Gold 6143). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.

Feature	Core i5-12400F	Xeon Gold 6143
Integrated GPU	No	—
Virtualization	VT-x, VT-d, EPT	—
Target Use	Gaming Performance/Value	—

💰

Value Analysis

The Core i5-12400F launched at $174 MSRP, while the Xeon Gold 6143 debuted at $342. On MSRP ($174 vs $342), the Core i5-12400F is $168 cheaper. In terms of value on MSRP (PassMark points per dollar), the Core i5-12400F delivers 112.3 pts/$ vs 72.5 pts/$ for the Xeon Gold 6143 — making the Core i5-12400F the 43.1% better value option.