Pentium G840 vs Ryzen 9 5900X
Pentium G840
Ryzen 9 5900X
Performance Spectrum - CPU
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.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Pentium G840 is positioned at rank #764 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Pentium G840
Performance Per Dollar Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Pentium G840 | Ryzen 9 5900X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($15) | ⚠️ Higher cost ($350) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Pentium G840 | Ryzen 9 5900X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+22%) |
| Upfront Cost | ✅ More affordable ($15) | ⚠️ Higher cost ($350) |
Performance Check
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.
Technical Specifications
Side-by-side comparison of Pentium G840 and Ryzen 9 5900X
Pentium G840
The Pentium G840 is manufactured by Intel. It was released in 22 May 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,367 points. Launch price was $60.
Ryzen 9 5900X
The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.
Processing Power
The Pentium G840 packs 2 cores / 2 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Ryzen 9 5900X has 10 more cores. Boost clocks reach 2.8 GHz on the Pentium G840 versus 4.8 GHz on the Ryzen 9 5900X — a 52.6% clock advantage for the Ryzen 9 5900X (base: 2.8 GHz vs 3.7 GHz). The Pentium G840 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Pentium G840 scores 1,367 against the Ryzen 9 5900X's 38,955 — a 186.4% lead for the Ryzen 9 5900X. L3 cache: 3 MB (total) on the Pentium G840 vs 64 MB on the Ryzen 9 5900X.
| Feature | Pentium G840 | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 2 / 2 | 12 / 24+500% |
| Boost Clock | 2.8 GHz | 4.8 GHz+71% |
| Base Clock | 2.8 GHz | 3.7 GHz+32% |
| L3 Cache | 3 MB (total) | 64 MB+2033% |
| L2 Cache | 256 kB (per core) | 512K (per core)+100% |
| Process | 32 nm | 7 nm, 12 nm-78% |
| Architecture | Sandy Bridge (2011−2013) | Vermeer (Zen3) (2020−2022) |
| PassMark | 1,367 | 38,955+2750% |
| Cinebench R23 Multi | — | 21,000 |
| Geekbench 6 Single | — | 2,174 |
| Geekbench 6 Multi | — | 11,888 |
Memory & Platform
The Pentium G840 uses the LGA1155 socket (PCIe 2.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Pentium G840 | Ryzen 9 5900X |
|---|---|---|
| Socket | LGA1155 | AM4 |
| PCIe Generation | PCIe 2.0 | PCIe 4.0+100% |
| Max RAM Speed | — | DDR4-3200 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 24 |
Advanced Features
Virtualization: not specified (Pentium G840) / AMD-V (Ryzen 9 5900X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K.
| Feature | Pentium G840 | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | AMD-V |
| Target Use | — | Workstation |
Value Analysis
The Pentium G840 launched at $64 MSRP, while the Ryzen 9 5900X debuted at $549. At current prices ($15 vs $350), the Pentium G840 is $335 cheaper. In terms of value (PassMark points per dollar), the Pentium G840 delivers 91.1 pts/$ vs 111.3 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 19.9% better value option.
| Feature | Pentium G840 | Ryzen 9 5900X |
|---|---|---|
| MSRP | $64-88% | $549 |
| Avg Price (30d) | $15-96% | $350 |
| Performance per Dollar | 91.1 | 111.3+22% |
| Release Date | 2011 | 2020 |
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