Ryzen 9 3900 vs Xeon Gold 6246R

CPU

GPU

Ryzen 9 3900

12 Cores24 Thrd65 WWMax: 4.3 GHz2019

Ryzen family

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Xeon Gold 6246R

16 Cores32 Thrd205 WWMax: 4.1 GHz2020

Similar parts

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Ryzen 9 3900 vs Xeon Gold 6246R Performance Spectrum

Ryzen 9 3900

12 / 24

30,588

+0.4%

Ryzen Threadripper 3970X

Ryzen Threadripper 3990X

Ryzen Threadripper PRO 5995WX

Xeon Gold 6246R

16 / 32

30,468

0.0%

About PassMark

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.

Ryzen 9 3900 vs Xeon Gold 6246R FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.

Search any supported game below to compare 1080p FPS for both components.

Ryzen 9 3900 vs Xeon Gold 6246R: Pros, Cons & Final Verdict

See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.

Ryzen 9 3900

2019

Why buy it

✅+10.6% higher Cinebench R23 multi-core.
✅+79% larger total L3 cache (64 MB vs 36 MB).
✅Draws 65W instead of 205W, a 140W reduction.
✅Includes a boxed cooler (Wraith Prism), unlike Xeon Gold 6246R.

Trade-offs

❌Worse for gaming: lower average FPS than Xeon Gold 6246R across 50 shared CPU benchmark tests.
❌Less compelling for workstation-style loads than Xeon Gold 6246R, which brings 16 cores / 32 threads and 48 PCIe lanes.
❌Launch MSRP is still $499 MSRP, while Xeon Gold 6246R mostly shows up through inconsistent older-market listings.

Xeon Gold 6246R

2020

Why buy it

✅Better for gaming: +12.8% higher average FPS across 50 shared CPU benchmark tests.
✅Better for workstations and heavier parallel workloads: 16 cores / 32 threads, plus 48 PCIe lanes vs 24.
✅100% more PCIe lanes (48 vs 24) for storage and expansion-heavy builds.

Trade-offs

❌Lower Cinebench R23 multi-core (16,000 vs 17,700).
❌Smaller total L3 cache (36 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 Ryzen 9 3900 better than Xeon Gold 6246R?

Not really, because they are built for different jobs. Xeon Gold 6246R makes more sense for workstation-style multi-core throughput, while Ryzen 9 3900 is the more practical desktop choice for gaming, platform cost, and everyday use.

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

For streaming, content creation, and heavier multitasking, Ryzen 9 3900 is the stronger fit. You are getting 10.6% better Cinebench R23 multi-core, backed by 12 cores and 24 threads. It also has the larger cache pool with 79% larger total L3 cache (64 MB vs 36 MB).

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

Ryzen 9 3900 is the better buy right now. Ryzen 9 3900 comes in at an unclear MSRP at $499 MSRP versus unclear MSRP, and it still gives you 10.6% better Cinebench R23 multi-core. The compromise is that Xeon Gold 6246R is still the better pure gaming CPU with a 12.8% average FPS lead across 50 shared CPU game tests in our data. It is also 100.0% better value on MSRP (61.3 vs 0.0 PassMark/$), so you are getting the faster CPU without taking a value hit on paper.

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

Xeon Gold 6246R makes more sense long term for 2026 and beyond. You are getting a newer CPU generation (2020 vs 2019) and AVX-512 support for heavier modern compute workloads. That makes it the safer long-term bet.

Ryzen 9 3900 vs Xeon Gold 6246R Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

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 Gold 6246R

The Xeon Gold 6246R is manufactured by Intel. It was released in 24 February 2020 (5 years ago). It is based on the Cascade Lake (2019−2020) architecture. It features 16 cores and 32 threads. Base frequency is 3.4 GHz, with boost up to 4.1 GHz. L3 cache: 35.75 MB. L2 cache: 16 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 205 Watt. Memory support: DDR4-2933. Passmark benchmark score: 30,468 points. Launch price was $3,286.

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Processing Power

The Ryzen 9 3900 packs 12 cores / 24 threads, while the Xeon Gold 6246R offers 16 cores / 32 threads — the Xeon Gold 6246R has 4 more cores. Boost clocks reach 4.3 GHz on the Ryzen 9 3900 versus 4.1 GHz on the Xeon Gold 6246R — a 4.8% clock advantage for the Ryzen 9 3900 (base: 3.1 GHz vs 3.4 GHz). The Ryzen 9 3900 uses the Matisse (Zen 2) (2019−2020) architecture (7 nm, 12 nm), while the Xeon Gold 6246R uses Cascade Lake (2019−2020) (14 nm). In PassMark, the Ryzen 9 3900 scores 30,588 against the Xeon Gold 6246R's 30,468 — a 0.4% lead for the Ryzen 9 3900. Cinebench R23 multi-core: 17,700 vs 16,000 (10.1% advantage for the Ryzen 9 3900). Geekbench 6 single-core — the metric most relevant to gaming — records 1,713 vs 1,293, a 27.9% lead for the Ryzen 9 3900 that directly translates to higher frame rates. Multi-core Geekbench: 10,983 vs 9,848 (10.9% advantage for the Ryzen 9 3900). L3 cache: 64 MB on the Ryzen 9 3900 vs 35.75 MB on the Xeon Gold 6246R.

Feature	Ryzen 9 3900	Xeon Gold 6246R
Cores / Threads	12 / 24	16 / 32+33%
Boost Clock	4.3 GHz+5%	4.1 GHz
Base Clock	3.1 GHz	3.4 GHz+10%
L3 Cache	64 MB+79%	35.75 MB
L2 Cache	512 kB (per core)	16 MB+3100%
Process	7 nm, 12 nm-50%	14 nm
Architecture	Matisse (Zen 2) (2019−2020)	Cascade Lake (2019−2020)
PassMark	30,588	30,468
Cinebench R23 Multi	17,700+11%	16,000
Geekbench 6 Single	1,713+32%	1,293
Geekbench 6 Multi	10,983+12%	9,848

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Memory & Platform

The Ryzen 9 3900 uses the AM4 socket (PCIe 4.0), while the Xeon Gold 6246R uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 3900 versus DDR4-2933 on the Xeon Gold 6246R — the Ryzen 9 3900 supports 9.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6246R supports up to 1024 GB of RAM compared to 128 GB — 700% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 3900) vs 6 (Xeon Gold 6246R). PCIe lanes: 24 (Ryzen 9 3900) vs 48 (Xeon Gold 6246R) — the Xeon Gold 6246R offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X570,B550,X470,B450 (Ryzen 9 3900) and Lewisburg (Xeon Gold 6246R).

Feature	Ryzen 9 3900	Xeon Gold 6246R
Socket	AM4	LGA3647
PCIe Generation	PCIe 4.0+33%	PCIe 3.0
Max RAM Speed	DDR4-3200+9%	DDR4-2933
Max RAM Capacity	128 GB	1024 GB+700%
RAM Channels	2	6+200%
ECC Support	No	Yes
PCIe Lanes	24	48+100%

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Advanced Features

Only the Ryzen 9 3900 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Gold 6246R 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 Gold 6246R). Primary use case: Ryzen 9 3900 targets Workstation Desktop (low power), Xeon Gold 6246R targets High-frequency Server / Financial. Direct competitor: Ryzen 9 3900 rivals Core i9-9900; Xeon Gold 6246R rivals EPYC 7302.

Feature	Ryzen 9 3900	Xeon Gold 6246R
Integrated GPU	No	No
Unlocked	Yes	No
AVX-512	No	Yes
Virtualization	AMD-V	VT-x, VT-d, EPT
Target Use	Workstation Desktop (low power)	High-frequency Server / Financial