A8-3820 vs Ryzen 7 7800X3D
A8-3820
Popular choices:
Ryzen 7 7800X3D
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 A8-3820 is positioned at rank #1032 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 A8-3820
Performance Per Dollar Ryzen 7 7800X3D
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | A8-3820 | Ryzen 7 7800X3D |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($200) | ⚠️ Higher cost ($384) |
| Longevity | 🛑 Legacy (Llano (2011−2012) / 32 nm) | ✨ Modern (Raphael (Zen4) (2022−2023) / 5 nm) |
💎 Value Proposition
| Insight | A8-3820 | Ryzen 7 7800X3D |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+720%) |
| Upfront Cost | ✅ More affordable ($200) | ⚠️ Higher cost ($384) |
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 A8-3820 and Ryzen 7 7800X3D
A8-3820
The A8-3820 is manufactured by AMD. It was released in 2014-01-01. It is based on the Llano (2011−2012) architecture. It features 4 cores and 4 threads. Base frequency is 2.5 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 1 MB (per core). Built on 32 nm process technology. Socket: FM1. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 2,178 points. Launch price was $90.
Ryzen 7 7800X3D
The Ryzen 7 7800X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 8 cores and 16 threads. Base frequency is 4.4 GHz, with boost up to 5 GHz. L3 cache: 96 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 34,293 points. Launch price was $449.
Processing Power
The A8-3820 packs 4 cores / 4 threads, while the Ryzen 7 7800X3D offers 8 cores / 16 threads — the Ryzen 7 7800X3D has 4 more cores. Boost clocks reach 2.8 GHz on the A8-3820 versus 5 GHz on the Ryzen 7 7800X3D — a 56.4% clock advantage for the Ryzen 7 7800X3D (base: 2.5 GHz vs 4.4 GHz). The A8-3820 uses the Llano (2011−2012) architecture (32 nm), while the Ryzen 7 7800X3D uses Raphael (Zen4) (2022−2023) (5 nm). In PassMark, the A8-3820 scores 2,178 against the Ryzen 7 7800X3D's 34,293 — a 176.1% lead for the Ryzen 7 7800X3D. Geekbench 6 single-core — the metric most relevant to gaming — records 354 vs 2,700, a 153.6% lead for the Ryzen 7 7800X3D that directly translates to higher frame rates. L3 cache: 0 kB on the A8-3820 vs 96 MB (total) on the Ryzen 7 7800X3D.
| Feature | A8-3820 | Ryzen 7 7800X3D |
|---|---|---|
| Cores / Threads | 4 / 4 | 8 / 16+100% |
| Boost Clock | 2.8 GHz | 5 GHz+79% |
| Base Clock | 2.5 GHz | 4.4 GHz+76% |
| L3 Cache | 0 kB | 96 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 32 nm | 5 nm-84% |
| Architecture | Llano (2011−2012) | Raphael (Zen4) (2022−2023) |
| PassMark | 2,178 | 34,293+1475% |
| Cinebench R23 Multi | — | 18,500 |
| Geekbench 6 Single | 354 | 2,700+663% |
| Geekbench 6 Multi | — | 15,000 |
Memory & Platform
The A8-3820 uses the FM1 socket (PCIe 2.0), while the Ryzen 7 7800X3D uses AM5 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1866 on the A8-3820 versus DDR5-5200 on the Ryzen 7 7800X3D — the Ryzen 7 7800X3D supports 50% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 7800X3D supports up to 128 GB of RAM compared to 32 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (A8-3820) vs 28 (Ryzen 7 7800X3D) — the Ryzen 7 7800X3D offers 8 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A55,A75 (A8-3820) and X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D).
| Feature | A8-3820 | Ryzen 7 7800X3D |
|---|---|---|
| Socket | FM1 | AM5 |
| PCIe Generation | PCIe 2.0 | PCIe 5.0+150% |
| Max RAM Speed | DDR3-1866 | DDR5-5200+67% |
| Max RAM Capacity | 32 GB | 128 GB+300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 20 | 28+40% |
Advanced Features
Only the Ryzen 7 7800X3D has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 7 7800X3D supports AVX-512 instructions — important for machine learning and scientific applications. Both support AMD-V virtualization. Both include integrated graphics — Radeon HD 6550D (A8-3820) and AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: A8-3820 targets Budget Desktop, Ryzen 7 7800X3D targets Gaming. Direct competitor: A8-3820 rivals Core i3-2120; Ryzen 7 7800X3D rivals Intel Core i7-14700K.
| Feature | A8-3820 | Ryzen 7 7800X3D |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Radeon HD 6550D | AMD Radeon Graphics (2-core) |
| Unlocked | No | Yes |
| AVX-512 | No | Yes |
| Virtualization | AMD-V | AMD-V |
| Target Use | Budget Desktop | Gaming |
Value Analysis
The A8-3820 launched at $280 MSRP, while the Ryzen 7 7800X3D debuted at $449. At current prices ($200 vs $384), the A8-3820 is $184 cheaper. In terms of value (PassMark points per dollar), the A8-3820 delivers 10.9 pts/$ vs 89.3 pts/$ for the Ryzen 7 7800X3D — making the Ryzen 7 7800X3D the 156.5% better value option.
| Feature | A8-3820 | Ryzen 7 7800X3D |
|---|---|---|
| MSRP | $280-38% | $449 |
| Avg Price (30d) | $200-48% | $384 |
| Performance per Dollar | 10.9 | 89.3+719% |
| Release Date | 2011 | 2023 |
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