Ryzen 5 8400F vs Xeon Gold 6143

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 5 8400F

2024

Why buy it

✅Costs $39 less on MSRP ($303 MSRP vs $342 MSRP).
✅Delivers 11.8% more PassMark for each dollar spent, at 81.0 vs 72.5 PassMark/$ ($303 MSRP vs $342 MSRP).
✅Draws 65W instead of 205W, a 140W reduction.
✅Newer platform on AM5 with DDR5 support instead of LGA3647 and DDR4.

Trade-offs

❌Lower PassMark (24,554 vs 24,786).
❌Smaller total L3 cache (16 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

✅+0.9% higher PassMark.
✅+37.5% larger total L3 cache (22 MB vs 16 MB).
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads.

Trade-offs

❌Lower PassMark per dollar, at 72.5 vs 81.0 PassMark/$ ($342 MSRP vs $303 MSRP).
❌215.4% higher power demand at 205W vs 65W.
❌Older platform position on LGA3647 with DDR4, while Ryzen 5 8400F moves to AM5 and DDR5.

Ryzen 5 8400F

2024

Xeon Gold 6143

2017

Why buy it

✅Costs $39 less on MSRP ($303 MSRP vs $342 MSRP).
✅Delivers 11.8% more PassMark for each dollar spent, at 81.0 vs 72.5 PassMark/$ ($303 MSRP vs $342 MSRP).
✅Draws 65W instead of 205W, a 140W reduction.
✅Newer platform on AM5 with DDR5 support instead of LGA3647 and DDR4.

Why buy it

✅+0.9% higher PassMark.
✅+37.5% larger total L3 cache (22 MB vs 16 MB).
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads.

Trade-offs

❌Lower PassMark (24,554 vs 24,786).
❌Smaller total L3 cache (16 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 81.0 PassMark/$ ($342 MSRP vs $303 MSRP).
❌215.4% higher power demand at 205W vs 65W.
❌Older platform position on LGA3647 with DDR4, while Ryzen 5 8400F moves to AM5 and DDR5.

Quick Answers

So, is Ryzen 5 8400F 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 Ryzen 5 8400F 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 0.9% better PassMark, backed by 16 cores and 32 threads. It also carries the larger cache pool with 37.5% larger total L3 cache (22 MB vs 16 MB).

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

Ryzen 5 8400F is the smarter buy today. Ryzen 5 8400F is $39 cheaper on MSRP at $303 MSRP versus $342 MSRP, and it gives you a 2.1% average FPS lead across 2 shared CPU game tests in our data. The trade-off is that Xeon Gold 6143 is still stronger for heavier multi-core work with 0.9% better PassMark. It is also 11.8% better value on MSRP (81.0 vs 72.5 PassMark/$), 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?

Ryzen 5 8400F is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2024 vs 2017) and a healthier platform with AM5 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.

Ryzen 5 8400F Benchmark Check

Xeon Gold 6143 Benchmark Check

Path of Exile 2

Preset	Ryzen 5 8400F	Xeon Gold 6143
1080p
low	178 FPS	183 FPS
medium	151 FPS	147 FPS
high	123 FPS	119 FPS
ultra	102 FPS	93 FPS
1440p
low	151 FPS	146 FPS
medium	124 FPS	114 FPS
high	101 FPS	92 FPS
ultra	84 FPS	72 FPS
4K
low	81 FPS	68 FPS
medium	72 FPS	57 FPS
high	58 FPS	45 FPS
ultra	45 FPS	36 FPS

Open Ryzen 5 8400F Open Xeon Gold 6143

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 5 8400F	Xeon Gold 6143
1080p
low	374 FPS	397 FPS
medium	316 FPS	343 FPS
high	278 FPS	286 FPS
ultra	238 FPS	240 FPS
1440p
low	326 FPS	344 FPS
medium	282 FPS	305 FPS
high	255 FPS	254 FPS
ultra	214 FPS	212 FPS
4K
low	243 FPS	222 FPS
medium	215 FPS	198 FPS
high	198 FPS	176 FPS
ultra	165 FPS	144 FPS

Open Ryzen 5 8400F Open Xeon Gold 6143

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 5 8400F	Xeon Gold 6143
1080p
low	614 FPS	620 FPS
medium	614 FPS	620 FPS
high	614 FPS	620 FPS
ultra	614 FPS	620 FPS
1440p
low	614 FPS	620 FPS
medium	603 FPS	620 FPS
high	522 FPS	620 FPS
ultra	446 FPS	589 FPS
4K
low	492 FPS	514 FPS
medium	431 FPS	420 FPS
high	369 FPS	370 FPS
ultra	303 FPS	302 FPS

Open Ryzen 5 8400F Open Xeon Gold 6143

League of Legends

League of Legends

Valorant

Preset	Ryzen 5 8400F	Xeon Gold 6143
1080p
low	614 FPS	620 FPS
medium	614 FPS	620 FPS
high	614 FPS	620 FPS
ultra	614 FPS	620 FPS
1440p
low	614 FPS	620 FPS
medium	614 FPS	620 FPS
high	614 FPS	614 FPS
ultra	601 FPS	519 FPS
4K
low	610 FPS	587 FPS
medium	548 FPS	516 FPS
high	490 FPS	453 FPS
ultra	426 FPS	380 FPS

Open Ryzen 5 8400F Open Xeon Gold 6143

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 5 8400F and Xeon Gold 6143

Ryzen 5 8400F

The Ryzen 5 8400F is manufactured by AMD. It was released in 1 April 2024 (1 year ago). It is based on the Phoenix (2023−2024) architecture. It features 6 cores and 12 threads. Base frequency is 4.2 GHz, with boost up to 4.7 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 24,554 points. Launch price was $170.

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.

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Processing Power

The Ryzen 5 8400F 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 4.7 GHz on the Ryzen 5 8400F versus 4 GHz on the Xeon Gold 6143 — a 16.1% clock advantage for the Ryzen 5 8400F (base: 4.2 GHz vs 2.8 GHz). The Ryzen 5 8400F is built on the Phoenix (2023−2024) architecture. In PassMark, the Ryzen 5 8400F scores 24,554 against the Xeon Gold 6143's 24,786 — a 0.9% lead for the Xeon Gold 6143. L3 cache: 16 MB (total) on the Ryzen 5 8400F vs 22 MB on the Xeon Gold 6143.

Feature	Ryzen 5 8400F	Xeon Gold 6143
Cores / Threads	6 / 12	16 / 32+167%
Boost Clock	4.7 GHz+18%	4 GHz
Base Clock	4.2 GHz+50%	2.8 GHz
L3 Cache	16 MB (total)	22 MB+38%
L2 Cache	1 MB (per core)	—
Process	4 nm-71%	14 nm
Architecture	Phoenix (2023−2024)	—
PassMark	24,554	24,786

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Memory & Platform

The Ryzen 5 8400F uses the AM5 socket (PCIe 4.0), while the Xeon Gold 6143 uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Ryzen 5 8400F	Xeon Gold 6143
Socket	AM5	LGA3647
PCIe Generation	PCIe 4.0+33%	PCIe 3.0

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Value Analysis

The Ryzen 5 8400F launched at $303 MSRP, while the Xeon Gold 6143 debuted at $342. On MSRP ($303 vs $342), the Ryzen 5 8400F is $39 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 5 8400F delivers 81.0 pts/$ vs 72.5 pts/$ for the Xeon Gold 6143 — making the Ryzen 5 8400F the 11.2% better value option.