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 9 3900

2019

Why buy it

✅+66.2% larger total L3 cache (64 MB vs 39 MB).
✅Draws 65W instead of 205W, a 140W reduction.
✅Includes a boxed cooler (Wraith Prism), unlike Xeon Platinum 8180M.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon Platinum 8180M across 47 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (17,700 vs 25,000).
❌Less compelling for workstation-style loads than Xeon Platinum 8180M, which brings 28 cores / 56 threads and 48 PCIe lanes.
❌Launch MSRP is still $499 MSRP, while Xeon Platinum 8180M mostly shows up through inconsistent older-market listings.

Xeon Platinum 8180M

2017

Why buy it

✅Better for gaming: +3.3% higher average FPS across 47 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 28 cores / 56 threads, plus 48 PCIe lanes vs 24.
✅100% more PCIe lanes (48 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Smaller total L3 cache (39 MB vs 64 MB).
❌215.4% higher power demand at 205W vs 65W.
❌No boxed cooler included, unlike Ryzen 9 3900.

Ryzen 9 3900

2019

Xeon Platinum 8180M

2017

Why buy it

✅+66.2% larger total L3 cache (64 MB vs 39 MB).
✅Draws 65W instead of 205W, a 140W reduction.
✅Includes a boxed cooler (Wraith Prism), unlike Xeon Platinum 8180M.

Why buy it

✅Better for gaming: +3.3% higher average FPS across 47 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 28 cores / 56 threads, plus 48 PCIe lanes vs 24.
✅100% more PCIe lanes (48 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon Platinum 8180M across 47 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (17,700 vs 25,000).
❌Less compelling for workstation-style loads than Xeon Platinum 8180M, which brings 28 cores / 56 threads and 48 PCIe lanes.
❌Launch MSRP is still $499 MSRP, while Xeon Platinum 8180M mostly shows up through inconsistent older-market listings.

Trade-offs

❌Smaller total L3 cache (39 MB vs 64 MB).
❌215.4% higher power demand at 205W vs 65W.
❌No boxed cooler included, unlike Ryzen 9 3900.

Quick Answers

So, is Xeon Platinum 8180M better than Ryzen 9 3900?

Not in a simple one-size-fits-all way. Xeon Platinum 8180M makes more sense for workstation-style multi-core throughput, while Ryzen 9 3900 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 Platinum 8180M is the better pick here. According to our tests, it delivers 3.3% more average FPS across 47 shared CPU game tests.

Which one is better for streaming, content creation, and heavy multitasking?

For streaming, content creation, and heavier multitasking, Xeon Platinum 8180M is the better fit. You are getting 41.2% better Cinebench R23 multi-core, backed by 28 cores and 56 threads.

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

Xeon Platinum 8180M is still the faster CPU overall, but Ryzen 9 3900 makes more sense if price matters more than absolute performance. Xeon Platinum 8180M is at an unclear MSRP at unclear MSRP versus $499 MSRP, and it gives you a 3.3% average FPS lead across 47 shared CPU game tests in our data. Ryzen 9 3900 is also 100.0% better value on MSRP (61.3 vs 0.0 PassMark/$), 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 9 3900 is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2019 vs 2017) and 66.2% larger total L3 cache (64 MB vs 39 MB). That makes it the safer long-term pick.

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 9 3900 Benchmark Check

Xeon Platinum 8180M Benchmark Check

Path of Exile 2

Preset	Ryzen 9 3900	Xeon Platinum 8180M
1080p
low	159 FPS	192 FPS
medium	130 FPS	156 FPS
high	111 FPS	127 FPS
ultra	92 FPS	99 FPS
1440p
low	144 FPS	158 FPS
medium	115 FPS	124 FPS
high	94 FPS	97 FPS
ultra	78 FPS	77 FPS
4K
low	78 FPS	72 FPS
medium	67 FPS	60 FPS
high	53 FPS	47 FPS
ultra	43 FPS	39 FPS

Open Ryzen 9 3900 Open Xeon Platinum 8180M

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 3900	Xeon Platinum 8180M
1080p
low	534 FPS	442 FPS
medium	470 FPS	386 FPS
high	384 FPS	315 FPS
ultra	342 FPS	259 FPS
1440p
low	460 FPS	381 FPS
medium	411 FPS	336 FPS
high	347 FPS	277 FPS
ultra	289 FPS	220 FPS
4K
low	288 FPS	238 FPS
medium	261 FPS	211 FPS
high	238 FPS	187 FPS
ultra	213 FPS	154 FPS

Open Ryzen 9 3900 Open Xeon Platinum 8180M

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 3900	Xeon Platinum 8180M
1080p
low	709 FPS	758 FPS
medium	589 FPS	758 FPS
high	536 FPS	758 FPS
ultra	472 FPS	758 FPS
1440p
low	541 FPS	722 FPS
medium	448 FPS	626 FPS
high	401 FPS	595 FPS
ultra	347 FPS	532 FPS
4K
low	394 FPS	462 FPS
medium	315 FPS	365 FPS
high	279 FPS	326 FPS
ultra	224 FPS	267 FPS

Open Ryzen 9 3900 Open Xeon Platinum 8180M

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 3900	Xeon Platinum 8180M
1080p
low	765 FPS	758 FPS
medium	765 FPS	758 FPS
high	711 FPS	733 FPS
ultra	638 FPS	636 FPS
1440p
low	725 FPS	738 FPS
medium	644 FPS	647 FPS
high	553 FPS	556 FPS
ultra	486 FPS	476 FPS
4K
low	516 FPS	532 FPS
medium	469 FPS	474 FPS
high	411 FPS	417 FPS
ultra	360 FPS	360 FPS

Open Ryzen 9 3900 Open Xeon Platinum 8180M

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 3900 and Xeon Platinum 8180M

Ryzen 9 3900

The Ryzen 9 3900 is manufactured by AMD. It was released in 24 September 2019 (6 years ago). It is based on the Matisse (Zen 2) (2019−2020) architecture. It features 12 cores and 24 threads. Base frequency is 3.1 GHz, with boost up to 4.3 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 65 Watt. Memory support: DDR4-3200. Passmark benchmark score: 30,588 points. Launch price was $499.

Xeon Platinum 8180M

The Xeon Platinum 8180M is manufactured by Intel. It was released in 11 July 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 28 cores and 56 threads. Base frequency is 2.5 GHz, with boost up to 3.8 GHz. L3 cache: 38.5 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 205 Watt. Memory support: DDR4-2666. Passmark benchmark score: 30,313 points. Launch price was $13,011.

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Processing Power

The Ryzen 9 3900 packs 12 cores / 24 threads, while the Xeon Platinum 8180M offers 28 cores / 56 threads — the Xeon Platinum 8180M has 16 more cores. Boost clocks reach 4.3 GHz on the Ryzen 9 3900 versus 3.8 GHz on the Xeon Platinum 8180M — a 12.3% clock advantage for the Ryzen 9 3900 (base: 3.1 GHz vs 2.5 GHz). The Ryzen 9 3900 uses the Matisse (Zen 2) (2019−2020) architecture (7 nm, 12 nm), while the Xeon Platinum 8180M uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Ryzen 9 3900 scores 30,588 against the Xeon Platinum 8180M's 30,313 — a 0.9% lead for the Ryzen 9 3900. Cinebench R23 multi-core: 17,700 vs 25,000 (34.2% advantage for the Xeon Platinum 8180M). Geekbench 6 single-core — the metric most relevant to gaming — records 1,713 vs 1,000, a 52.6% lead for the Ryzen 9 3900 that directly translates to higher frame rates. Multi-core Geekbench: 10,983 vs 21,854 (66.2% advantage for the Xeon Platinum 8180M). L3 cache: 64 MB on the Ryzen 9 3900 vs 38.5 MB (total) on the Xeon Platinum 8180M.

Feature	Ryzen 9 3900	Xeon Platinum 8180M
Cores / Threads	12 / 24	28 / 56+133%
Boost Clock	4.3 GHz+13%	3.8 GHz
Base Clock	3.1 GHz+24%	2.5 GHz
L3 Cache	64 MB+66%	38.5 MB (total)
L2 Cache	512 kB (per core)	1 MB (per core)+100%
Process	7 nm, 12 nm-50%	14 nm
Architecture	Matisse (Zen 2) (2019−2020)	Skylake (server) (2017−2018)
PassMark	30,588	30,313
Cinebench R23 Multi	17,700	25,000+41%
Geekbench 6 Single	1,713+71%	1,000
Geekbench 6 Multi	10,983	21,854+99%

🧠

Memory & Platform

The Ryzen 9 3900 uses the AM4 socket (PCIe 4.0), while the Xeon Platinum 8180M uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. The Xeon Platinum 8180M supports up to 1536 GB of RAM compared to 128 GB — 169.2% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 3900) vs 6 (Xeon Platinum 8180M). PCIe lanes: 24 (Ryzen 9 3900) vs 48 (Xeon Platinum 8180M) — the Xeon Platinum 8180M offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X570,B550,X470,B450 (Ryzen 9 3900) and C620 (Xeon Platinum 8180M).

Feature	Ryzen 9 3900	Xeon Platinum 8180M
Socket	AM4	LGA3647
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	DDR4-3200	DDR4-2666
Max RAM Capacity	128 GB	1536 GB+1100%
RAM Channels	2	6+200%
ECC Support	No	Yes
PCIe Lanes	24	48+100%

🔧

Advanced Features

Only the Ryzen 9 3900 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Platinum 8180M supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 3900) vs VT-x, VT-d, EPT (Xeon Platinum 8180M). Primary use case: Ryzen 9 3900 targets Workstation Desktop (low power), Xeon Platinum 8180M targets Mission Critical Datacenter. Direct competitor: Ryzen 9 3900 rivals Core i9-9900; Xeon Platinum 8180M rivals EPYC 7551.