Athlon II X4 645 vs Celeron G4900
Athlon II X4 645
Celeron G4900
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 II X4 645 is positioned at rank #819 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 II X4 645
Performance Per Dollar Celeron G4900
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X4 645 | Celeron G4900 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($20) | ⚠️ Higher cost ($85) |
| Longevity | 🛑 Legacy (Propus (2009−2011) / 45 nm) | ✨ Modern (Coffee Lake (2017−2019) / 14 nm) |
💎 Value Proposition
| Insight | Athlon II X4 645 | Celeron G4900 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+326%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($20) | ⚠️ Higher cost ($85) |
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 II X4 645 and Celeron G4900
Athlon II X4 645
The Athlon II X4 645 is manufactured by AMD. It was released in 21 September 2010 (15 years ago). It is based on the Propus (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.1 GHz. L3 cache: 0 kB. L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 2,375 points. Launch price was $80.
Celeron G4900
The Celeron G4900 is manufactured by Intel. It was released in 3 April 2018 (7 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 2 cores and 2 threads. Base frequency is 3.1 GHz, with boost up to 3.1 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 54 Watt. Memory support: DDR4-2400. Passmark benchmark score: 2,370 points. Launch price was $42.
Processing Power
The Athlon II X4 645 packs 4 cores / 4 threads, while the Celeron G4900 offers 2 cores / 2 threads — the Athlon II X4 645 has 2 more cores. Boost clocks reach 3.1 GHz on the Athlon II X4 645 versus 3.1 GHz on the Celeron G4900 — identical boost frequencies (base: 3.1 GHz vs 3.1 GHz). The Athlon II X4 645 uses the Propus (2009−2011) architecture (45 nm), while the Celeron G4900 uses Coffee Lake (2017−2019) (14 nm). In PassMark, the Athlon II X4 645 scores 2,375 against the Celeron G4900's 2,370 — a 0.2% lead for the Athlon II X4 645. Geekbench 6 single-core — the metric most relevant to gaming — records 399 vs 850, a 72.2% lead for the Celeron G4900 that directly translates to higher frame rates. Multi-core Geekbench: 1,374 vs 1,550 (12% advantage for the Celeron G4900). L3 cache: 0 kB on the Athlon II X4 645 vs 6 MB (total) on the Celeron G4900.
| Feature | Athlon II X4 645 | Celeron G4900 |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 2 |
| Boost Clock | 3.1 GHz | 3.1 GHz |
| Base Clock | 3.1 GHz | 3.1 GHz |
| L3 Cache | 0 kB | 6 MB (total) |
| L2 Cache | 512 kB (per core)+100% | 256K (per core) |
| Process | 45 nm | 14 nm-69% |
| Architecture | Propus (2009−2011) | Coffee Lake (2017−2019) |
| PassMark | 2,375 | 2,370 |
| Cinebench R23 Multi | 1,374 | — |
| Geekbench 6 Single | 399 | 850+113% |
| Geekbench 6 Multi | 1,374 | 1,550+13% |
Memory & Platform
The Athlon II X4 645 uses the AM3 socket (PCIe 2.0), while the Celeron G4900 uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Athlon II X4 645 versus DDR4-2400 on the Celeron G4900 — the Celeron G4900 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron G4900 supports up to 64 GB of RAM compared to 16 GB — 120% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: AMD 700 Series,AMD 800 Series,AMD 900 Series (Athlon II X4 645) and H310,B360,B365,H370,Z370,Z390 (Celeron G4900).
| Feature | Athlon II X4 645 | Celeron G4900 |
|---|---|---|
| Socket | AM3 | LGA1151 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1333 | DDR4-2400+33% |
| Max RAM Capacity | 16 GB | 64 GB+300% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Virtualization support: Yes (Athlon II X4 645) vs VT-x (Celeron G4900). The Celeron G4900 includes integrated graphics (UHD Graphics 610), while the Athlon II X4 645 requires a dedicated GPU. Primary use case: Athlon II X4 645 targets Desktop, Celeron G4900 targets Budget. Direct competitor: Celeron G4900 rivals Pentium G5400.
| Feature | Athlon II X4 645 | Celeron G4900 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | UHD Graphics 610 |
| Unlocked | — | No |
| AVX-512 | No | No |
| Virtualization | Yes | VT-x |
| Target Use | Desktop | Budget |
Value Analysis
The Athlon II X4 645 launched at $126 MSRP, while the Celeron G4900 debuted at $42. At current prices ($20 vs $85), the Athlon II X4 645 is $65 cheaper. In terms of value (PassMark points per dollar), the Athlon II X4 645 delivers 118.8 pts/$ vs 27.9 pts/$ for the Celeron G4900 — making the Athlon II X4 645 the 123.9% better value option.
| Feature | Athlon II X4 645 | Celeron G4900 |
|---|---|---|
| MSRP | $126 | $42-67% |
| Avg Price (30d) | $20-76% | $85 |
| Performance per Dollar | 118.8+326% | 27.9 |
| Release Date | 2010 | 2018 |
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