CPU
GPU
Athlon X2 QL-66
Celeron G1820
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. The Athlon X2 QL-66 is positioned at rank 1048 and the Celeron G1820 is on rank 895, so the Celeron G1820 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon X2 QL-66
Performance Per Dollar Celeron G1820
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon X2 QL-66 | Celeron G1820 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($5) | ⚠️ Higher cost ($15) |
| Longevity | 🛑 Legacy (Lion (2008−2009) / 65 nm) | 🛑 Legacy (Haswell (2013−2015) / 22 nm) |
💎 Value Proposition
| Insight | Athlon X2 QL-66 | Celeron G1820 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+200%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($5) | ⚠️ Higher cost ($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 Athlon X2 QL-66 and Celeron G1820
Athlon X2 QL-66
The Athlon X2 QL-66 is manufactured by AMD. It was released in 2009-01-01. It is based on the Lion (2008−2009) architecture. It features 2 cores and 2 threads. Max frequency: 2.2 GHz. L2 cache: 1 MB. Built on 65 nm process technology. Socket: S1g2. Thermal design power (TDP): 1 MB. Passmark benchmark score: 1,695 points. Launch price was $149.
Celeron G1820
The Celeron G1820 is manufactured by Intel. It was released in 1 December 2013 (12 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 2 threads. Base frequency is 2.7 GHz, with boost up to 2.7 GHz. L3 cache: 2 MB. L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA1150. Thermal design power (TDP): 53 Watt. Memory support: DDR3. Passmark benchmark score: 1,696 points. Launch price was $110.
Processing Power
Both the Athlon X2 QL-66 and Celeron G1820 share an identical 2-core/2-thread configuration. Boost clocks reach 2.2 GHz on the Athlon X2 QL-66 versus 2.7 GHz on the Celeron G1820 — a 20.4% clock advantage for the Celeron G1820. The Athlon X2 QL-66 uses the Lion (2008−2009) architecture (65 nm), while the Celeron G1820 uses Haswell (2013−2015) (22 nm). In PassMark, the Athlon X2 QL-66 scores 1,695 against the Celeron G1820's 1,696 — a 0.1% lead for the Celeron G1820.
| Feature | Athlon X2 QL-66 | Celeron G1820 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 2.2 GHz | 2.7 GHz+23% |
| Base Clock | — | 2.7 GHz |
| L3 Cache | — | 2 MB |
| L2 Cache | 1 MB+300% | 256 kB (per core) |
| Process | 65 nm | 22 nm-66% |
| Architecture | Lion (2008−2009) | Haswell (2013−2015) |
| PassMark | 1,695 | 1,696 |
| Geekbench 6 Single | — | 496 |
| Geekbench 6 Multi | — | 910 |
Memory & Platform
The Athlon X2 QL-66 uses the S1g2 socket (PCIe 2.0), while the Celeron G1820 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR2-667 on the Athlon X2 QL-66 versus DDR3-1333 on the Celeron G1820 — the Celeron G1820 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron G1820 supports up to 32 GB of RAM compared to 8 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Athlon X2 QL-66) vs 16 (Celeron G1820) — the Celeron G1820 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD S1 (Athlon X2 QL-66) and H81,B85,H87,Z87,H97,Z97 (Celeron G1820).
| Feature | Athlon X2 QL-66 | Celeron G1820 |
|---|---|---|
| Socket | S1g2 | LGA1150 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR2-667 | DDR3-1333+50% |
| Max RAM Capacity | 8 GB | 32 GB+300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 0 | 16 |
Advanced Features
Virtualization: not specified (Athlon X2 QL-66) / VT-x (Celeron G1820). The Celeron G1820 includes integrated graphics (HD Graphics (Haswell)), while the Athlon X2 QL-66 requires a dedicated GPU. Primary use case: Celeron G1820 targets Budget. Direct competitor: Celeron G1820 rivals Pentium G3220.
| Feature | Athlon X2 QL-66 | Celeron G1820 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | HD Graphics (Haswell) |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x |
| Target Use | — | Budget |
Value Analysis
The Athlon X2 QL-66 launched at $150 MSRP, while the Celeron G1820 debuted at $110. At current prices ($5 vs $15), the Athlon X2 QL-66 is $10 cheaper. In terms of value (PassMark points per dollar), the Athlon X2 QL-66 delivers 339.0 pts/$ vs 113.1 pts/$ for the Celeron G1820 — making the Athlon X2 QL-66 the 100% better value option.
| Feature | Athlon X2 QL-66 | Celeron G1820 |
|---|---|---|
| MSRP | $150 | $110-27% |
| Avg Price (30d) | $5-67% | $15 |
| Performance per Dollar | 339.0+200% | 113.1 |
| Release Date | 2009 | 2013 |
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