Phenom II X4 840T vs Core i7-9700K
Phenom II X4 840T
Core i7-9700K
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 X4 840T is positioned at rank #265 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 X4 840T
Performance Per Dollar Core i7-9700K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Phenom II X4 840T | Core i7-9700K |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($200) |
| Longevity | 🛑 Legacy (Zosma (2010−2011) / 45 nm) | ✨ Modern (Coffee Lake-R (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | Phenom II X4 840T | Core i7-9700K |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($200) |
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 840T and Core i7-9700K
Phenom II X4 840T
The Phenom II X4 840T is manufactured by AMD. It was released in 1 September 2010 (15 years ago). It is based on the Zosma (2010−2011) architecture. It features 4 cores and 4 threads. Base frequency is 2.9 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: 2,367 points. Launch price was $80.
Core i7-9700K
The Core i7-9700K is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Coffee Lake-R (2018−2019) architecture. It features 8 cores and 8 threads. Base frequency is 3.6 GHz, with boost up to 4.9 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 95 Watt. Memory support: DDR4. Passmark benchmark score: 14,397 points. Launch price was $374.
Processing Power
The Phenom II X4 840T packs 4 cores / 4 threads, while the Core i7-9700K offers 8 cores / 8 threads — the Core i7-9700K has 4 more cores. Boost clocks reach 3.2 GHz on the Phenom II X4 840T versus 4.9 GHz on the Core i7-9700K — a 42% clock advantage for the Core i7-9700K (base: 2.9 GHz vs 3.6 GHz). The Phenom II X4 840T uses the Zosma (2010−2011) architecture (45 nm), while the Core i7-9700K uses Coffee Lake-R (2018−2019) (14 nm). In PassMark, the Phenom II X4 840T scores 2,367 against the Core i7-9700K's 14,397 — a 143.5% lead for the Core i7-9700K. L3 cache: 6 MB (total) on the Phenom II X4 840T vs 12 MB (total) on the Core i7-9700K.
| Feature | Phenom II X4 840T | Core i7-9700K |
|---|---|---|
| Cores / Threads | 4 / 4 | 8 / 8+100% |
| Boost Clock | 3.2 GHz | 4.9 GHz+53% |
| Base Clock | 2.9 GHz | 3.6 GHz+24% |
| L3 Cache | 6 MB (total) | 12 MB (total)+100% |
| L2 Cache | 512 kB (per core)+100% | 256K (per core) |
| Process | 45 nm | 14 nm-69% |
| Architecture | Zosma (2010−2011) | Coffee Lake-R (2018−2019) |
| PassMark | 2,367 | 14,397+508% |
Memory & Platform
The Phenom II X4 840T uses the AM3 socket (PCIe 2.0), while the Core i7-9700K uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Phenom II X4 840T | Core i7-9700K |
|---|---|---|
| Socket | AM3 | LGA1151 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | — | DDR4-2666 |
| Max RAM Capacity | — | 128 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Phenom II X4 840T) / VT-x, VT-d (Core i7-9700K). The Core i7-9700K includes integrated graphics (UHD Graphics 630), while the Phenom II X4 840T requires a dedicated GPU. Primary use case: Core i7-9700K targets Desktop.
| Feature | Phenom II X4 840T | Core i7-9700K |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | UHD Graphics 630 |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Desktop |
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