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