Celeron G5905T vs Athlon II X4 645
Celeron G5905T
Athlon II X4 645
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 Celeron G5905T
Performance Per Dollar Athlon II X4 645
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron G5905T | Athlon II X4 645 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($50) | ✅ More affordable ($20) |
| Longevity | ✨ Modern (Legacy / 14 nm) | 🛑 Legacy (Propus (2009−2011) / 45 nm) |
💎 Value Proposition
| Insight | Celeron G5905T | Athlon II X4 645 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+152%) |
| Upfront Cost | ⚠️ Higher cost ($50) | ✅ More affordable ($20) |
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 Celeron G5905T and Athlon II X4 645
Celeron G5905T
The Celeron G5905T is manufactured by Intel. It was released in 2007-01-01. It features 2 cores and 2 threads. Base frequency: 3.3 GHz. L3 cache: 4 MB Intel® Smart Cache. Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 35 Watt. Memory support: DDR4-2666. Passmark benchmark score: 2,356 points. Launch price was $69.
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.
Processing Power
The Celeron G5905T packs 2 cores / 2 threads, while the Athlon II X4 645 offers 4 cores / 4 threads — the Athlon II X4 645 has 2 more cores. The Athlon II X4 645 is built on the Propus (2009−2011) architecture. In PassMark, the Celeron G5905T scores 2,356 against the Athlon II X4 645's 2,375 — a 0.8% lead for the Athlon II X4 645. Geekbench 6 single-core — the metric most relevant to gaming — records 748 vs 399, a 60.9% lead for the Celeron G5905T that directly translates to higher frame rates. Multi-core Geekbench: 750 vs 1,374 (58.8% advantage for the Athlon II X4 645). L3 cache: 4 MB Intel® Smart Cache on the Celeron G5905T vs 0 kB on the Athlon II X4 645.
| Feature | Celeron G5905T | Athlon II X4 645 |
|---|---|---|
| Cores / Threads | 2 / 2 | 4 / 4+100% |
| Boost Clock | — | 3.1 GHz |
| Base Clock | 3.3 GHz+6% | 3.1 GHz |
| L3 Cache | 4 MB Intel® Smart Cache | 0 kB |
| L2 Cache | — | 512 kB (per core) |
| Process | 14 nm-69% | 45 nm |
| Architecture | — | Propus (2009−2011) |
| PassMark | 2,356 | 2,375 |
| Cinebench R23 Multi | — | 1,374 |
| Geekbench 6 Single | 748+87% | 399 |
| Geekbench 6 Multi | 750 | 1,374+83% |
Memory & Platform
The Celeron G5905T uses the LGA1200 socket (PCIe 3.0), while the Athlon II X4 645 uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Celeron G5905T versus DDR3-1333 on the Athlon II X4 645 — the Celeron G5905T supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Celeron G5905T 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. Both provide 16 PCIe lanes. Chipset compatibility: H410,B460,H470,Z490,H510,B560,H570,Z590 (Celeron G5905T) and AMD 700 Series,AMD 800 Series,AMD 900 Series (Athlon II X4 645).
| Feature | Celeron G5905T | Athlon II X4 645 |
|---|---|---|
| Socket | LGA1200 | AM3 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | DDR4-2666+33% | DDR3-1333 |
| Max RAM Capacity | 128 GB+700% | 16 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Virtualization support: VT-x (Celeron G5905T) vs Yes (Athlon II X4 645). The Celeron G5905T includes integrated graphics (UHD Graphics 610), while the Athlon II X4 645 requires a dedicated GPU. Primary use case: Celeron G5905T targets Budget, Athlon II X4 645 targets Desktop. Direct competitor: Celeron G5905T rivals Pentium Gold G6405T.
| Feature | Celeron G5905T | Athlon II X4 645 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | UHD Graphics 610 | — |
| Unlocked | No | — |
| AVX-512 | No | No |
| Virtualization | VT-x | Yes |
| Target Use | Budget | Desktop |
Value Analysis
The Celeron G5905T launched at $50 MSRP, while the Athlon II X4 645 debuted at $126. At current prices ($50 vs $20), the Athlon II X4 645 is $30 cheaper. In terms of value (PassMark points per dollar), the Celeron G5905T delivers 47.1 pts/$ vs 118.8 pts/$ for the Athlon II X4 645 — making the Athlon II X4 645 the 86.4% better value option.
| Feature | Celeron G5905T | Athlon II X4 645 |
|---|---|---|
| MSRP | $50-60% | $126 |
| Avg Price (30d) | $50 | $20-60% |
| Performance per Dollar | 47.1 | 118.8+152% |
| Release Date | 2020 | 2010 |
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