
Ryzen 7 7800X3D vs Celeron B820

Ryzen 7 7800X3D

Celeron B820
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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 Celeron B820
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 7800X3D | Celeron B820 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($384) | ✅ More affordable ($15) |
| Longevity | ✨ Modern (Raphael (Zen4) (2022−2023) / 5 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Ryzen 7 7800X3D | Celeron B820 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+75%) | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($384) | ✅ More affordable ($15) |
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 Celeron B820

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.

Celeron B820
The Celeron B820 is manufactured by Intel. It was released in 1 July 2012 (13 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 2 cores and 2 threads. Base frequency is 1.7 GHz, with boost up to 1.7 GHz. L3 cache: 2 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: PGA988. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 765 points. Launch price was $86.
Processing Power
The Ryzen 7 7800X3D packs 8 cores / 16 threads, while the Celeron B820 offers 2 cores / 2 threads — the Ryzen 7 7800X3D has 6 more cores. Boost clocks reach 5 GHz on the Ryzen 7 7800X3D versus 1.7 GHz on the Celeron B820 — a 98.5% clock advantage for the Ryzen 7 7800X3D (base: 4.4 GHz vs 1.7 GHz). The Ryzen 7 7800X3D uses the Raphael (Zen4) (2022−2023) architecture (5 nm), while the Celeron B820 uses Sandy Bridge (2011−2013) (32 nm). In PassMark, the Ryzen 7 7800X3D scores 34,293 against the Celeron B820's 765 — a 191.3% lead for the Ryzen 7 7800X3D. L3 cache: 96 MB (total) on the Ryzen 7 7800X3D vs 2 MB (total) on the Celeron B820.
| Feature | Ryzen 7 7800X3D | Celeron B820 |
|---|---|---|
| Cores / Threads | 8 / 16+300% | 2 / 2 |
| Boost Clock | 5 GHz+194% | 1.7 GHz |
| Base Clock | 4.4 GHz+159% | 1.7 GHz |
| L3 Cache | 96 MB (total)+4700% | 2 MB (total) |
| L2 Cache | 1 MB (per core)+300% | 256K (per core) |
| Process | 5 nm-84% | 32 nm |
| Architecture | Raphael (Zen4) (2022−2023) | Sandy Bridge (2011−2013) |
| PassMark | 34,293+4383% | 765 |
| Cinebench R23 Multi | 18,500 | — |
| Geekbench 6 Single | 2,700 | — |
| Geekbench 6 Multi | 15,000 | — |
Memory & Platform
The Ryzen 7 7800X3D uses the AM5 socket (PCIe 5.0), while the Celeron B820 uses PGA988 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5200 on the Ryzen 7 7800X3D versus DDR3-1333 on the Celeron B820 — 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 16 GB — 155.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 7 7800X3D) vs 16 (Celeron B820) — the Ryzen 7 7800X3D offers 12 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X670E,X670,B650E,B650,A620 (Ryzen 7 7800X3D) and HM65,HM67,QM67,QM77 (Celeron B820).
| Feature | Ryzen 7 7800X3D | Celeron B820 |
|---|---|---|
| Socket | AM5 | PGA988 |
| PCIe Generation | PCIe 5.0+150% | PCIe 2.0 |
| Max RAM Speed | DDR5-5200+67% | DDR3-1333 |
| Max RAM Capacity | 128 GB+700% | 16 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 28+75% | 16 |
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. Virtualization support: AMD-V (Ryzen 7 7800X3D) vs VT-x (Celeron B820). Both include integrated graphics — AMD Radeon Graphics (2-core) (Ryzen 7 7800X3D) and HD Graphics (Sandy Bridge) (Celeron B820) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 7 7800X3D targets Gaming, Celeron B820 targets Budget. Direct competitor: Ryzen 7 7800X3D rivals Intel Core i7-14700K; Celeron B820 rivals Pentium 967.
| Feature | Ryzen 7 7800X3D | Celeron B820 |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | AMD Radeon Graphics (2-core) | HD Graphics (Sandy Bridge) |
| Unlocked | Yes | No |
| AVX-512 | Yes | No |
| Virtualization | AMD-V | VT-x |
| Target Use | Gaming | Budget |
Value Analysis
The Ryzen 7 7800X3D launched at $449 MSRP, while the Celeron B820 debuted at $86. At current prices ($384 vs $15), the Celeron B820 is $369 cheaper. In terms of value (PassMark points per dollar), the Ryzen 7 7800X3D delivers 89.3 pts/$ vs 51.0 pts/$ for the Celeron B820 — making the Ryzen 7 7800X3D the 54.6% better value option.
| Feature | Ryzen 7 7800X3D | Celeron B820 |
|---|---|---|
| MSRP | $449 | $86-81% |
| Avg Price (30d) | $384 | $15-96% |
| Performance per Dollar | 89.3+75% | 51.0 |
| Release Date | 2023 | 2012 |
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