Ryzen 9 3900X
Xeon Gold 6240R
Ryzen 9 3900X vs Xeon Gold 6240R Performance Spectrum
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 3900X vs Xeon Gold 6240R 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.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
Ryzen 9 3900X vs Xeon Gold 6240R: 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 3900X
2019Why buy it
- ✅Better for gaming: +39.7% higher average FPS across 50 shared CPU benchmark tests.
- ✅+79% larger total L3 cache (64 MB vs 36 MB).
- ✅Costs $1,945 less on MSRP ($499 MSRP vs $2,444 MSRP).
- ✅Delivers 377.5% more PassMark for each dollar spent, at 65.2 vs 13.6 PassMark/$ ($499 MSRP vs $2,444 MSRP).
- ✅Draws 105W instead of 165W, a 60W reduction.
Trade-offs
- ❌Lower Geekbench multi-core (12,000 vs 17,218).
- ❌Less compelling for workstation-style loads than Xeon Gold 6240R, which brings 24 cores / 48 threads and 48 PCIe lanes.
- ❌No AVX-512 support for niche heavy compute workloads where it can matter.
Xeon Gold 6240R
2020Why buy it
- ✅+43.5% higher Geekbench multi-core.
- ✅Better for workstations and heavier parallel workloads: 24 cores / 48 threads, plus 48 PCIe lanes vs 24.
- ✅100% more PCIe lanes (48 vs 24) for storage and expansion-heavy builds.
Trade-offs
- ❌Worse for gaming: lower average FPS than Ryzen 9 3900X across 50 shared CPU benchmark tests.
- ❌Smaller total L3 cache (36 MB vs 64 MB).
- ❌Lower PassMark per dollar, at 13.6 vs 65.2 PassMark/$ ($2,444 MSRP vs $499 MSRP).
- ❌57.1% higher power demand at 165W vs 105W.
- ❌No boxed cooler included, unlike Ryzen 9 3900X.
Quick Answers
So, is Ryzen 9 3900X better than Xeon Gold 6240R?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
Ryzen 9 3900X vs Xeon Gold 6240R Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
Ryzen 9 3900X
The Ryzen 9 3900X is manufactured by AMD. It was released in 7 July 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 3.8 GHz, with boost up to 4.6 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 125 Watt. Memory support: DDR4 Dual-channel. Passmark benchmark score: 32,517 points. Launch price was $499.
Xeon Gold 6240R
The Xeon Gold 6240R 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 24 cores and 48 threads. Base frequency is 2.4 GHz, with boost up to 4 GHz. L3 cache: 35.75 MB. L2 cache: 24 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2933. Passmark benchmark score: 33,353 points. Launch price was $2,200.
Processing Power
The Ryzen 9 3900X packs 12 cores / 24 threads, while the Xeon Gold 6240R offers 24 cores / 48 threads — the Xeon Gold 6240R has 12 more cores. Boost clocks reach 4.6 GHz on the Ryzen 9 3900X versus 4 GHz on the Xeon Gold 6240R — a 14% clock advantage for the Ryzen 9 3900X (base: 3.8 GHz vs 2.4 GHz). The Ryzen 9 3900X uses the Matisse (Zen 2) (2019−2020) architecture (7 nm, 12 nm), while the Xeon Gold 6240R uses Cascade Lake (2019−2020) (14 nm). In PassMark, the Ryzen 9 3900X scores 32,517 against the Xeon Gold 6240R's 33,353 — a 2.5% lead for the Xeon Gold 6240R. Geekbench 6 single-core — the metric most relevant to gaming — records 1,300 vs 1,212, a 7% lead for the Ryzen 9 3900X that directly translates to higher frame rates. Multi-core Geekbench: 12,000 vs 17,218 (35.7% advantage for the Xeon Gold 6240R). L3 cache: 64 MB on the Ryzen 9 3900X vs 35.75 MB on the Xeon Gold 6240R.
| Feature | Ryzen 9 3900X | Xeon Gold 6240R |
|---|---|---|
| Cores / Threads | 12 / 24 | 24 / 48+100% |
| Boost Clock | 4.6 GHz+15% | 4 GHz |
| Base Clock | 3.8 GHz+58% | 2.4 GHz |
| L3 Cache | 64 MB+79% | 35.75 MB |
| L2 Cache | 512K (per core)+2033% | 24 MB |
| Process | 7 nm, 12 nm-50% | 14 nm |
| Architecture | Matisse (Zen 2) (2019−2020) | Cascade Lake (2019−2020) |
| PassMark | 32,517 | 33,353+3% |
| Cinebench R23 Multi | — | 22,500 |
| Geekbench 6 Single | 1,300+7% | 1,212 |
| Geekbench 6 Multi | 12,000 | 17,218+43% |
Memory & Platform
The Ryzen 9 3900X uses the AM4 socket (PCIe 4.0), while the Xeon Gold 6240R uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 3900X versus DDR4-2933 on the Xeon Gold 6240R — the Ryzen 9 3900X supports 9.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6240R supports up to 1024 GB of RAM compared to 128 GB — 700% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 3900X) vs 6 (Xeon Gold 6240R). PCIe lanes: 24 (Ryzen 9 3900X) vs 48 (Xeon Gold 6240R) — the Xeon Gold 6240R offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X570,B550 (Ryzen 9 3900X) and C621,Lewisburg (Xeon Gold 6240R).
| Feature | Ryzen 9 3900X | Xeon Gold 6240R |
|---|---|---|
| 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 | Yes | Yes |
| PCIe Lanes | 24 | 48+100% |
Advanced Features
Only the Ryzen 9 3900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Gold 6240R supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 3900X) vs VT-x, VT-d, EPT (Xeon Gold 6240R). Primary use case: Ryzen 9 3900X targets Workstation, Xeon Gold 6240R targets Server / High-load computing. Direct competitor: Xeon Gold 6240R rivals EPYC 7402.
| Feature | Ryzen 9 3900X | Xeon Gold 6240R |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | — |
| Unlocked | Yes | No |
| AVX-512 | No | Yes |
| Virtualization | AMD-V | VT-x, VT-d, EPT |
| Target Use | Workstation | Server / High-load computing |
Value Analysis
At launch, the Ryzen 9 3900X was priced at $499, while the Xeon Gold 6240R came in at $2444. On launch pricing ($499 vs $2444), Ryzen 9 3900X was $1945 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 3900X delivers 65.2 pts/$ vs 13.6 pts/$ for the Xeon Gold 6240R — making the Ryzen 9 3900X the 130.7% better value option.
| Feature | Ryzen 9 3900X | Xeon Gold 6240R |
|---|---|---|
| MSRP | $499-80% | $2444 |
| Performance per Dollar | 65.2+379% | 13.6 |
| Release Date | 2019 | 2020 |
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