Athlon X4 840 vs Ryzen 7 5800X
Athlon X4 840
Popular choices:
Ryzen 7 5800X
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 Athlon X4 840 is positioned at rank #563 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 Athlon X4 840
Performance Per Dollar Ryzen 7 5800X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon X4 840 | Ryzen 7 5800X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($25) | ⚠️ Higher cost ($180) |
| Longevity | 🛑 Legacy (Kaveri (2014−2015) / 28 nm) | ✨ Modern (Vermeer (Zen 3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Athlon X4 840 | Ryzen 7 5800X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+16%) |
| Upfront Cost | ✅ More affordable ($25) | ⚠️ Higher cost ($180) |
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 Athlon X4 840 and Ryzen 7 5800X
Athlon X4 840
The Athlon X4 840 is manufactured by AMD. It was released in 2009-01-01. It is based on the Kaveri (2014−2015) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.8 GHz. L2 cache: 4 MB. Built on 28 nm process technology. Socket: FM2+. Thermal design power (TDP): 65 watt. Memory support: DDR3. Passmark benchmark score: 3,331 points. Launch price was $149.
Ryzen 7 5800X
The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 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. Passmark benchmark score: 27,712 points. Launch price was $449.
Processing Power
The Athlon X4 840 packs 4 cores / 4 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the Ryzen 7 5800X has 4 more cores. Boost clocks reach 3.8 GHz on the Athlon X4 840 versus 4.7 GHz on the Ryzen 7 5800X — a 21.2% clock advantage for the Ryzen 7 5800X (base: 3.1 GHz vs 3.8 GHz). The Athlon X4 840 uses the Kaveri (2014−2015) architecture (28 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Athlon X4 840 scores 3,331 against the Ryzen 7 5800X's 27,712 — a 157.1% lead for the Ryzen 7 5800X.
| Feature | Athlon X4 840 | Ryzen 7 5800X |
|---|---|---|
| Cores / Threads | 4 / 4 | 8 / 16+100% |
| Boost Clock | 3.8 GHz | 4.7 GHz+24% |
| Base Clock | 3.1 GHz | 3.8 GHz+23% |
| L3 Cache | — | 32 MB |
| L2 Cache | 4 MB+700% | 512K (per core) |
| Process | 28 nm | 7 nm, 12 nm-75% |
| Architecture | Kaveri (2014−2015) | Vermeer (Zen 3) (2020−2022) |
| PassMark | 3,331 | 27,712+732% |
Memory & Platform
The Athlon X4 840 uses the FM2+ socket (PCIe 3.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-2133 on the Athlon X4 840 versus DDR4-3200 on the Ryzen 7 5800X — the Ryzen 7 5800X supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 5800X supports up to 128 GB of RAM compared to 64 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Athlon X4 840) vs 24 (Ryzen 7 5800X) — the Ryzen 7 5800X offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD FM2+ (Athlon X4 840) and AMD 500 series,AMD 400 series,AMD 300 series (Ryzen 7 5800X).
| Feature | Athlon X4 840 | Ryzen 7 5800X |
|---|---|---|
| Socket | FM2+ | AM4 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | DDR3-2133 | DDR4-3200+33% |
| Max RAM Capacity | 64 GB | 128 GB+100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 16 | 24+50% |
Advanced Features
Virtualization: not specified (Athlon X4 840) / AMD-V (Ryzen 7 5800X). Primary use case: Ryzen 7 5800X targets Desktop.
| Feature | Athlon X4 840 | Ryzen 7 5800X |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | AMD-V |
| Target Use | — | Desktop |
Value Analysis
The Athlon X4 840 launched at $102 MSRP, while the Ryzen 7 5800X debuted at $449. At current prices ($25 vs $180), the Athlon X4 840 is $155 cheaper. In terms of value (PassMark points per dollar), the Athlon X4 840 delivers 133.2 pts/$ vs 154.0 pts/$ for the Ryzen 7 5800X — making the Ryzen 7 5800X the 14.4% better value option.
| Feature | Athlon X4 840 | Ryzen 7 5800X |
|---|---|---|
| MSRP | $102-77% | $449 |
| Avg Price (30d) | $25-86% | $180 |
| Performance per Dollar | 133.2 | 154.0+16% |
| Release Date | 2014 | 2020 |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Athlon X4 840 and Ryzen 7 5800X
