Core i5-12400F vs Phenom II X6 1045T
Core i5-12400F
Phenom II X6 1045T
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 Core i5-12400F
Performance Per Dollar Phenom II X6 1045T
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i5-12400F | Phenom II X6 1045T |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($110) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Alder Lake-S (2022) / Intel 7 nm) | 🛑 Legacy (Thuban (2010) / 45 nm) |
💎 Value Proposition
| Insight | Core i5-12400F | Phenom II X6 1045T |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($110) | ✅ More affordable ($0) |
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 Core i5-12400F and Phenom II X6 1045T
Core i5-12400F
The Core i5-12400F is manufactured by Intel. It was released in 4 January 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 6 cores and 12 threads. Base frequency is 2.5 GHz, with boost up to 4.4 GHz. L3 cache: 18 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 65 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 19,532 points. Launch price was $180.
Phenom II X6 1045T
The Phenom II X6 1045T is manufactured by AMD. It was released in 1 September 2010 (15 years ago). It is based on the Thuban (2010) architecture. It features 6 cores and 6 threads. Base frequency is 2.7 GHz, with boost up to 3.2 GHz. L3 cache: 6 MB (total). 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: 3,244 points. Launch price was $175.
Processing Power
The Core i5-12400F packs 6 cores / 12 threads, matching the Phenom II X6 1045T's 6 cores. Boost clocks reach 4.4 GHz on the Core i5-12400F versus 3.2 GHz on the Phenom II X6 1045T — a 31.6% clock advantage for the Core i5-12400F (base: 2.5 GHz vs 2.7 GHz). The Core i5-12400F uses the Alder Lake-S (2022) architecture (Intel 7 nm), while the Phenom II X6 1045T uses Thuban (2010) (45 nm). In PassMark, the Core i5-12400F scores 19,532 against the Phenom II X6 1045T's 3,244 — a 143% lead for the Core i5-12400F. L3 cache: 18 MB (total) on the Core i5-12400F vs 6 MB (total) on the Phenom II X6 1045T.
| Feature | Core i5-12400F | Phenom II X6 1045T |
|---|---|---|
| Cores / Threads | 6 / 12 | 6 / 6 |
| Boost Clock | 4.4 GHz+38% | 3.2 GHz |
| Base Clock | 2.5 GHz | 2.7 GHz+8% |
| L3 Cache | 18 MB (total)+200% | 6 MB (total) |
| L2 Cache | 1.25 MB (per core)+150% | 512 kB (per core) |
| Process | Intel 7 nm-84% | 45 nm |
| Architecture | Alder Lake-S (2022) | Thuban (2010) |
| PassMark | 19,532+502% | 3,244 |
| Cinebench R23 Multi | 12,380 | — |
| Geekbench 6 Single | 1,700 | — |
| Geekbench 6 Multi | 657 | — |
Memory & Platform
The Core i5-12400F uses the LGA1700 socket (PCIe 3.0), while the Phenom II X6 1045T uses AM3 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Core i5-12400F | Phenom II X6 1045T |
|---|---|---|
| Socket | LGA1700 | AM3 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | DDR5-4800, DDR4-3200 | — |
| Max RAM Capacity | 128 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 20 | — |
Advanced Features
Virtualization: VT-x, VT-d, EPT (Core i5-12400F) / not specified (Phenom II X6 1045T). Primary use case: Core i5-12400F targets Gaming Performance/Value. Direct competitor: Core i5-12400F rivals Ryzen 5 5600.
| Feature | Core i5-12400F | Phenom II X6 1045T |
|---|---|---|
| Integrated GPU | No | — |
| Virtualization | VT-x, VT-d, EPT | — |
| Target Use | Gaming Performance/Value | — |
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