Phenom II X6 1045T vs Ryzen 7 5800X
Phenom II X6 1045T
Popular choices:
Ryzen 7 5800X
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 Phenom II X6 1045T is positioned at rank #168 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 Phenom II X6 1045T
Performance Per Dollar Ryzen 7 5800X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Phenom II X6 1045T | Ryzen 7 5800X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($180) |
| Longevity | 🛑 Legacy (Thuban (2010) / 45 nm) | ✨ Modern (Vermeer (Zen 3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Phenom II X6 1045T | Ryzen 7 5800X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($180) |
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 Phenom II X6 1045T and Ryzen 7 5800X
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.
Ryzen 7 5800X
The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 27,712 points. Launch price was $449.
Processing Power
The Phenom II X6 1045T packs 6 cores / 6 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the Ryzen 7 5800X has 2 more cores. Boost clocks reach 3.2 GHz on the Phenom II X6 1045T versus 4.7 GHz on the Ryzen 7 5800X — a 38% clock advantage for the Ryzen 7 5800X (base: 2.7 GHz vs 3.8 GHz). The Phenom II X6 1045T uses the Thuban (2010) architecture (45 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Phenom II X6 1045T scores 3,244 against the Ryzen 7 5800X's 27,712 — a 158.1% lead for the Ryzen 7 5800X. L3 cache: 6 MB (total) on the Phenom II X6 1045T vs 32 MB on the Ryzen 7 5800X.
| Feature | Phenom II X6 1045T | Ryzen 7 5800X |
|---|---|---|
| Cores / Threads | 6 / 6 | 8 / 16+33% |
| Boost Clock | 3.2 GHz | 4.7 GHz+47% |
| Base Clock | 2.7 GHz | 3.8 GHz+41% |
| L3 Cache | 6 MB (total) | 32 MB+433% |
| L2 Cache | 512 kB (per core) | 512K (per core) |
| Process | 45 nm | 7 nm, 12 nm-84% |
| Architecture | Thuban (2010) | Vermeer (Zen 3) (2020−2022) |
| PassMark | 3,244 | 27,712+754% |
Memory & Platform
The Phenom II X6 1045T uses the AM3 socket (PCIe 2.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Phenom II X6 1045T | Ryzen 7 5800X |
|---|---|---|
| Socket | AM3 | AM4 |
| PCIe Generation | PCIe 2.0 | PCIe 4.0+100% |
| Max RAM Speed | — | DDR4-3200 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 24 |
Advanced Features
Virtualization: not specified (Phenom II X6 1045T) / AMD-V (Ryzen 7 5800X). Primary use case: Ryzen 7 5800X targets Desktop.
| Feature | Phenom II X6 1045T | Ryzen 7 5800X |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | AMD-V |
| Target Use | — | Desktop |
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