
Phenom II X4 900e

Athlon 64 X2 5800+
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 Phenom II X4 900e is positioned at rank 373 and the Athlon 64 X2 5800+ is on rank 1037, so the Phenom II X4 900e offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Phenom II X4 900e
Performance Per Dollar Athlon 64 X2 5800+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Phenom II X4 900e | Athlon 64 X2 5800+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($20) |
| Longevity | 🛑 Legacy (Deneb (2009−2011) / 45 nm) | 🛑 Legacy (Brisbane (2007−2008) / 65 nm) |
💎 Value Proposition
| Insight | Phenom II X4 900e | Athlon 64 X2 5800+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($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 Phenom II X4 900e and Athlon 64 X2 5800+

Phenom II X4 900e
The Phenom II X4 900e is manufactured by AMD. It was released in 2009-01-01. It is based on the Deneb (2009−2011) architecture. It features 4 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 2.4 GHz. L3 cache: 6 MB (total). L2 cache: 512 kB (per core). Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 1,727 points. Launch price was $149.

Athlon 64 X2 5800+
The Athlon 64 X2 5800+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Brisbane (2007−2008) architecture. It features 2 cores and 2 threads. Max frequency: 3 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 65 nm process technology. Socket: AM2. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 1,745 points. Launch price was $149.
Processing Power
The Phenom II X4 900e packs 4 cores / 4 threads, while the Athlon 64 X2 5800+ offers 2 cores / 2 threads — the Phenom II X4 900e has 2 more cores. Boost clocks reach 2.4 GHz on the Phenom II X4 900e versus 3 GHz on the Athlon 64 X2 5800+ — a 22.2% clock advantage for the Athlon 64 X2 5800+. The Phenom II X4 900e uses the Deneb (2009−2011) architecture (45 nm), while the Athlon 64 X2 5800+ uses Brisbane (2007−2008) (65 nm). In PassMark, the Phenom II X4 900e scores 1,727 against the Athlon 64 X2 5800+'s 1,745 — a 1% lead for the Athlon 64 X2 5800+. L3 cache: 6 MB (total) on the Phenom II X4 900e vs 0 kB on the Athlon 64 X2 5800+.
| Feature | Phenom II X4 900e | Athlon 64 X2 5800+ |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 2 |
| Boost Clock | 2.4 GHz | 3 GHz+25% |
| Base Clock | 2.4 GHz | — |
| L3 Cache | 6 MB (total) | 0 kB |
| L2 Cache | 512 kB (per core) | 512 kB |
| Process | 45 nm-31% | 65 nm |
| Architecture | Deneb (2009−2011) | Brisbane (2007−2008) |
| PassMark | 1,727 | 1,745+1% |
Memory & Platform
The Phenom II X4 900e uses the AM3 socket (PCIe 2.0), while the Athlon 64 X2 5800+ uses AM2 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Phenom II X4 900e | Athlon 64 X2 5800+ |
|---|---|---|
| Socket | AM3 | AM2 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | — | DDR2-800 |
| Max RAM Capacity | — | 16 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 0 |
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