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

✅+166.7% larger total L3 cache (64 MB vs 24 MB).
✅Draws 65W instead of 80W, a 15W reduction.
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Wraith Prism), unlike Xeon 6357P.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon 6357P across 4 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (17,700 vs 18,000).
❌Launch MSRP is still $499 MSRP, while Xeon 6357P mostly shows up through inconsistent older-market listings.
❌Older platform position on AM4 with DDR4, while Xeon 6357P moves to LGA1700 and DDR5.

Xeon 6357P

2025

Why buy it

✅Better for gaming: +6.2% higher average FPS across 4 shared CPU benchmark tests.
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Smaller total L3 cache (24 MB vs 64 MB).
❌23.1% higher power demand at 80W vs 65W.
❌No boxed cooler included, unlike Ryzen 9 3900.

Ryzen 9 3900

2019

Xeon 6357P

2025

Why buy it

✅+166.7% larger total L3 cache (64 MB vs 24 MB).
✅Draws 65W instead of 80W, a 15W reduction.
✅20% more PCIe lanes (24 vs 20) for storage and expansion-heavy builds.
✅Includes a boxed cooler (Wraith Prism), unlike Xeon 6357P.

Why buy it

✅Better for gaming: +6.2% higher average FPS across 4 shared CPU benchmark tests.
✅Newer platform on LGA1700 with DDR5 support instead of AM4 and DDR4.
✅AVX-512 support for select workstation, AI, and scientific workloads.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon 6357P across 4 shared CPU benchmark tests.
❌Lower Cinebench R23 multi-core (17,700 vs 18,000).
❌Launch MSRP is still $499 MSRP, while Xeon 6357P mostly shows up through inconsistent older-market listings.
❌Older platform position on AM4 with DDR4, while Xeon 6357P moves to LGA1700 and DDR5.

Trade-offs

❌Smaller total L3 cache (24 MB vs 64 MB).
❌23.1% higher power demand at 80W vs 65W.
❌No boxed cooler included, unlike Ryzen 9 3900.

Quick Answers

So, is Xeon 6357P better than Ryzen 9 3900?

Not in a simple one-size-fits-all way. Xeon 6357P 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 6357P is the better pick here. According to our tests, it delivers 6.2% 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 6357P is the better fit. You are getting 1.7% better Cinebench R23 multi-core, backed by 8 cores and 16 threads.

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

Xeon 6357P is still the faster CPU overall, but Ryzen 9 3900 makes more sense if price matters more than absolute performance. Xeon 6357P is at an unclear MSRP at unclear MSRP versus $499 MSRP, and it gives you a 6.2% average FPS lead across 4 shared CPU game tests in our data. Ryzen 9 3900 is also 100.0% better value on MSRP (61.3 vs 0.0 PassMark/$), which is why it is easier to justify for price-conscious builds on paper.

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

Xeon 6357P is the more future-proof choice for 2026 and beyond. You are getting a newer CPU generation (2025 vs 2019), a healthier platform with LGA1700 and DDR5 instead of AM4, more multi-core headroom with 8 cores / 16 threads instead of 12/24, and AVX-512 support for heavier modern compute workloads. 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 9 3900 Benchmark Check

Xeon 6357P Benchmark Check

Path of Exile 2

Preset	Ryzen 9 3900	Xeon 6357P
1080p
low	159 FPS	257 FPS
medium	130 FPS	246 FPS
high	111 FPS	205 FPS
ultra	92 FPS	176 FPS
1440p
low	144 FPS	222 FPS
medium	115 FPS	190 FPS
high	94 FPS	152 FPS
ultra	78 FPS	133 FPS
4K
low	78 FPS	153 FPS
medium	67 FPS	130 FPS
high	53 FPS	99 FPS
ultra	43 FPS	88 FPS

Open Ryzen 9 3900 Open Xeon 6357P

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Ryzen 9 3900	Xeon 6357P
1080p
low	534 FPS	620 FPS
medium	470 FPS	523 FPS
high	384 FPS	442 FPS
ultra	342 FPS	408 FPS
1440p
low	460 FPS	532 FPS
medium	411 FPS	467 FPS
high	347 FPS	398 FPS
ultra	289 FPS	346 FPS
4K
low	288 FPS	311 FPS
medium	261 FPS	278 FPS
high	238 FPS	265 FPS
ultra	213 FPS	233 FPS

Open Ryzen 9 3900 Open Xeon 6357P

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Ryzen 9 3900	Xeon 6357P
1080p
low	709 FPS	646 FPS
medium	589 FPS	529 FPS
high	536 FPS	466 FPS
ultra	472 FPS	404 FPS
1440p
low	541 FPS	588 FPS
medium	448 FPS	489 FPS
high	401 FPS	425 FPS
ultra	347 FPS	369 FPS
4K
low	394 FPS	424 FPS
medium	315 FPS	369 FPS
high	279 FPS	335 FPS
ultra	224 FPS	285 FPS

Open Ryzen 9 3900 Open Xeon 6357P

League of Legends

League of Legends

Valorant

Preset	Ryzen 9 3900	Xeon 6357P
1080p
low	765 FPS	760 FPS
medium	765 FPS	760 FPS
high	711 FPS	726 FPS
ultra	638 FPS	652 FPS
1440p
low	725 FPS	760 FPS
medium	644 FPS	704 FPS
high	553 FPS	609 FPS
ultra	486 FPS	536 FPS
4K
low	516 FPS	537 FPS
medium	469 FPS	490 FPS
high	411 FPS	439 FPS
ultra	360 FPS	383 FPS

Open Ryzen 9 3900 Open Xeon 6357P

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Ryzen 9 3900 and Xeon 6357P

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 6357P

The Xeon 6357P is manufactured by Intel. It was released in 24 February 2025 (less than a year ago). It is based on the Raptor Lake-R (2023−2025) architecture. It features 8 cores and 16 threads. Base frequency is 3 GHz, with boost up to 5.1 GHz. L3 cache: 24 MB (total). L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 80 Watt. Memory support: DDR5-4800. Passmark benchmark score: 30,401 points. Launch price was $556.

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Processing Power

The Ryzen 9 3900 packs 12 cores / 24 threads, while the Xeon 6357P offers 8 cores / 16 threads — the Ryzen 9 3900 has 4 more cores. Boost clocks reach 4.3 GHz on the Ryzen 9 3900 versus 5.1 GHz on the Xeon 6357P — a 17% clock advantage for the Xeon 6357P (base: 3.1 GHz vs 3 GHz). The Ryzen 9 3900 uses the Matisse (Zen 2) (2019−2020) architecture (7 nm, 12 nm), while the Xeon 6357P uses Raptor Lake-R (2023−2025) (Intel 7 nm). In PassMark, the Ryzen 9 3900 scores 30,588 against the Xeon 6357P's 30,401 — a 0.6% lead for the Ryzen 9 3900. Cinebench R23 multi-core: 17,700 vs 18,000 (1.7% advantage for the Xeon 6357P). Geekbench 6 single-core — the metric most relevant to gaming — records 1,713 vs 2,784, a 47.6% lead for the Xeon 6357P that directly translates to higher frame rates. Multi-core Geekbench: 10,983 vs 12,769 (15% advantage for the Xeon 6357P). L3 cache: 64 MB on the Ryzen 9 3900 vs 24 MB (total) on the Xeon 6357P.

Feature	Ryzen 9 3900	Xeon 6357P
Cores / Threads	12 / 24+50%	8 / 16
Boost Clock	4.3 GHz	5.1 GHz+19%
Base Clock	3.1 GHz+3%	3 GHz
L3 Cache	64 MB+167%	24 MB (total)
L2 Cache	512 kB (per core)	2 MB (per core)+300%
Process	7 nm, 12 nm	Intel 7 nm
Architecture	Matisse (Zen 2) (2019−2020)	Raptor Lake-R (2023−2025)
PassMark	30,588	30,401
Cinebench R23 Multi	17,700	18,000+2%
Geekbench 6 Single	1,713	2,784+63%
Geekbench 6 Multi	10,983	12,769+16%

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Memory & Platform

The Ryzen 9 3900 uses the AM4 socket (PCIe 4.0), while the Xeon 6357P uses LGA1700 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 3900 versus DDR5-4800 on the Xeon 6357P — the Xeon 6357P supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 128 GB of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 3900) vs 20 (Xeon 6357P) — the Ryzen 9 3900 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X570,B550,X470,B450 (Ryzen 9 3900) and Server chipsets (Xeon 6357P).

Feature	Ryzen 9 3900	Xeon 6357P
Socket	AM4	LGA1700
PCIe Generation	PCIe 4.0	PCIe 4.0
Max RAM Speed	DDR4-3200	DDR5-4800+25%
Max RAM Capacity	128 GB	128 GB
RAM Channels	2	2
ECC Support	No	Yes
PCIe Lanes	24+20%	20

🔧

Advanced Features

Only the Ryzen 9 3900 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon 6357P 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 6357P). Primary use case: Ryzen 9 3900 targets Workstation Desktop (low power), Xeon 6357P targets Edge Server / Workstation. Direct competitor: Ryzen 9 3900 rivals Core i9-9900; Xeon 6357P rivals Core i7-14700.