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 7 5800X

2020

Why buy it

✅Better for gaming: +17.0% higher average FPS across 50 shared CPU benchmark tests.
✅+45.5% larger total L3 cache (32 MB vs 22 MB).
✅Draws 105W instead of 205W, a 100W reduction.
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Trade-offs

❌Less compelling for workstation-style loads than Xeon Gold 6143, which brings 16 cores / 32 threads.
❌Lower PassMark per dollar, at 61.7 vs 72.5 PassMark/$ ($449 MSRP vs $342 MSRP).

Xeon Gold 6143

2017

Why buy it

✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads.
✅Costs $107 less on MSRP ($342 MSRP vs $449 MSRP).
✅Delivers 17.4% more PassMark for each dollar spent, at 72.5 vs 61.7 PassMark/$ ($342 MSRP vs $449 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5800X across 50 shared CPU benchmark tests.
❌Lower PassMark (24,786 vs 27,712).
❌Smaller total L3 cache (22 MB vs 32 MB).
❌95.2% higher power demand at 205W vs 105W.

Ryzen 7 5800X

2020

Xeon Gold 6143

2017

Why buy it

✅Better for gaming: +17.0% higher average FPS across 50 shared CPU benchmark tests.
✅+45.5% larger total L3 cache (32 MB vs 22 MB).
✅Draws 105W instead of 205W, a 100W reduction.
✅100+% more PCIe lanes (24 vs 0) for storage and expansion-heavy builds.

Why buy it

✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads.
✅Costs $107 less on MSRP ($342 MSRP vs $449 MSRP).
✅Delivers 17.4% more PassMark for each dollar spent, at 72.5 vs 61.7 PassMark/$ ($342 MSRP vs $449 MSRP).

Trade-offs

❌Less compelling for workstation-style loads than Xeon Gold 6143, which brings 16 cores / 32 threads.
❌Lower PassMark per dollar, at 61.7 vs 72.5 PassMark/$ ($449 MSRP vs $342 MSRP).

Trade-offs

❌Worse for gaming: lower average FPS than Ryzen 7 5800X across 50 shared CPU benchmark tests.
❌Lower PassMark (24,786 vs 27,712).
❌Smaller total L3 cache (22 MB vs 32 MB).
❌95.2% higher power demand at 205W vs 105W.

Quick Answers

So, is Ryzen 7 5800X 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 7 5800X 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 7 5800X is the better pick here. According to our tests, it delivers 17.0% 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 7 5800X is the better fit. You are getting 11.8% better PassMark, backed by 8 cores and 16 threads. It also carries the larger cache pool with 45.5% larger total L3 cache (32 MB vs 22 MB).

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

Ryzen 7 5800X is still the faster CPU overall, but Xeon Gold 6143 makes more sense if price matters more than absolute performance. Ryzen 7 5800X is 31.3% more expensive on MSRP at $449 MSRP versus $342 MSRP, and it gives you a 17.0% average FPS lead across 50 shared CPU game tests in our data. Xeon Gold 6143 is also 17.4% better value on MSRP (72.5 vs 61.7 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Ryzen 7 5800X is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2017), 45.5% larger total L3 cache (32 MB vs 22 MB), and more multi-core headroom with 8 cores / 16 threads instead of 16/32. 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.

Ryzen 7 5800X Benchmark Check

Xeon Gold 6143 Benchmark Check

Path of Exile 2

Preset	Ryzen 7 5800X	Xeon Gold 6143
1080p
low	206 FPS	183 FPS
medium	178 FPS	147 FPS
high	146 FPS	119 FPS
ultra	110 FPS	93 FPS
1440p
low	170 FPS	146 FPS
medium	142 FPS	114 FPS
high	115 FPS	92 FPS
ultra	88 FPS	72 FPS
4K
low	83 FPS	68 FPS
medium	74 FPS	57 FPS
high	59 FPS	45 FPS
ultra	46 FPS	36 FPS

Open Ryzen 7 5800X Open Xeon Gold 6143

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 7 5800X	Xeon Gold 6143
1080p
low	662 FPS	397 FPS
medium	558 FPS	343 FPS
high	466 FPS	286 FPS
ultra	417 FPS	240 FPS
1440p
low	563 FPS	344 FPS
medium	493 FPS	305 FPS
high	423 FPS	254 FPS
ultra	361 FPS	212 FPS
4K
low	350 FPS	222 FPS
medium	308 FPS	198 FPS
high	288 FPS	176 FPS
ultra	250 FPS	144 FPS

Open Ryzen 7 5800X Open Xeon Gold 6143

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 7 5800X	Xeon Gold 6143
1080p
low	693 FPS	620 FPS
medium	651 FPS	620 FPS
high	570 FPS	620 FPS
ultra	464 FPS	620 FPS
1440p
low	693 FPS	620 FPS
medium	573 FPS	620 FPS
high	498 FPS	620 FPS
ultra	413 FPS	589 FPS
4K
low	484 FPS	514 FPS
medium	410 FPS	420 FPS
high	363 FPS	370 FPS
ultra	302 FPS	302 FPS

Open Ryzen 7 5800X Open Xeon Gold 6143

League of Legends

League of Legends

Valorant

Preset	Ryzen 7 5800X	Xeon Gold 6143
1080p
low	693 FPS	620 FPS
medium	693 FPS	620 FPS
high	693 FPS	620 FPS
ultra	693 FPS	620 FPS
1440p
low	693 FPS	620 FPS
medium	693 FPS	620 FPS
high	672 FPS	614 FPS
ultra	593 FPS	519 FPS
4K
low	604 FPS	587 FPS
medium	550 FPS	516 FPS
high	495 FPS	453 FPS
ultra	436 FPS	380 FPS

Open Ryzen 7 5800X Open Xeon Gold 6143

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 7 5800X and Xeon Gold 6143

Ryzen 7 5800X

The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 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. Passmark benchmark score: 27,712 points. Launch price was $449.

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 Ryzen 7 5800X packs 8 cores / 16 threads, while the Xeon Gold 6143 offers 16 cores / 32 threads — the Xeon Gold 6143 has 8 more cores. Boost clocks reach 4.7 GHz on the Ryzen 7 5800X versus 4 GHz on the Xeon Gold 6143 — a 16.1% clock advantage for the Ryzen 7 5800X (base: 3.8 GHz vs 2.8 GHz). The Ryzen 7 5800X is built on the Vermeer (Zen 3) (2020−2022) architecture. In PassMark, the Ryzen 7 5800X scores 27,712 against the Xeon Gold 6143's 24,786 — a 11.1% lead for the Ryzen 7 5800X. L3 cache: 32 MB on the Ryzen 7 5800X vs 22 MB on the Xeon Gold 6143.

Feature	Ryzen 7 5800X	Xeon Gold 6143
Cores / Threads	8 / 16	16 / 32+100%
Boost Clock	4.7 GHz+18%	4 GHz
Base Clock	3.8 GHz+36%	2.8 GHz
L3 Cache	32 MB+45%	22 MB
L2 Cache	512K (per core)	—
Process	7 nm, 12 nm-50%	14 nm
Architecture	Vermeer (Zen 3) (2020−2022)	—
PassMark	27,712+12%	24,786

🧠

Memory & Platform

The Ryzen 7 5800X uses the AM4 socket (PCIe 4.0), while the Xeon Gold 6143 uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.

Feature	Ryzen 7 5800X	Xeon Gold 6143
Socket	AM4	LGA3647
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	DDR4-3200	—
Max RAM Capacity	128 GB	—
RAM Channels	2	—
ECC Support	Yes	—
PCIe Lanes	24	—

🔧

Advanced Features

Virtualization: AMD-V (Ryzen 7 5800X) / not specified (Xeon Gold 6143). Primary use case: Ryzen 7 5800X targets Desktop.

Feature	Ryzen 7 5800X	Xeon Gold 6143
Integrated GPU	No	—
Unlocked	Yes	—
AVX-512	No	—
Virtualization	AMD-V	—
Target Use	Desktop	—

💰

Value Analysis

The Ryzen 7 5800X launched at $449 MSRP, while the Xeon Gold 6143 debuted at $342. On MSRP ($449 vs $342), the Xeon Gold 6143 is $107 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 7 5800X delivers 61.7 pts/$ vs 72.5 pts/$ for the Xeon Gold 6143 — making the Xeon Gold 6143 the 16% better value option.