Core i7-990X vs Core i5-7640X
Core i7-990X
Core i5-7640X
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 Core i7-990X is positioned at rank 1046 and the Core i5-7640X is on rank 619, so the Core i5-7640X offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-990X
Performance Per Dollar Core i5-7640X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-990X | Core i5-7640X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($225) | ✅ More affordable ($85) |
| Longevity | 🛑 Legacy (Gulftown (2010−2011) / 32 nm) | ✨ Modern (Kaby Lake-X (2017) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-990X | Core i5-7640X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+162%) |
| Upfront Cost | ⚠️ Higher cost ($225) | ✅ More affordable ($85) |
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 i7-990X and Core i5-7640X
Core i7-990X
The Core i7-990X is manufactured by Intel. It was released in 24 February 2011 (14 years ago). It is based on the Gulftown (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 3.46 GHz, with boost up to 3.73 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 130 Watt. Memory support: DDR3. Passmark benchmark score: 7,135 points. Launch price was $1,104.
Core i5-7640X
The Core i5-7640X is manufactured by Intel. It was released in 26 June 2017 (8 years ago). It is based on the Kaby Lake-X (2017) architecture. It features 4 cores and 4 threads. Base frequency is 4 GHz, with boost up to 4.2 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 112 Watt. Memory support: DDR4-2666. Passmark benchmark score: 7,060 points. Launch price was $242.
Processing Power
The Core i7-990X packs 6 cores / 12 threads, while the Core i5-7640X offers 4 cores / 4 threads — the Core i7-990X has 2 more cores. Boost clocks reach 3.73 GHz on the Core i7-990X versus 4.2 GHz on the Core i5-7640X — a 11.9% clock advantage for the Core i5-7640X (base: 3.46 GHz vs 4 GHz). The Core i7-990X uses the Gulftown (2010−2011) architecture (32 nm), while the Core i5-7640X uses Kaby Lake-X (2017) (14 nm). In PassMark, the Core i7-990X scores 7,135 against the Core i5-7640X's 7,060 — a 1.1% lead for the Core i7-990X. L3 cache: 12 MB (total) on the Core i7-990X vs 6 MB (total) on the Core i5-7640X.
| Feature | Core i7-990X | Core i5-7640X |
|---|---|---|
| Cores / Threads | 6 / 12+50% | 4 / 4 |
| Boost Clock | 3.73 GHz | 4.2 GHz+13% |
| Base Clock | 3.46 GHz | 4 GHz+16% |
| L3 Cache | 12 MB (total)+100% | 6 MB (total) |
| L2 Cache | 256 kB (per core) | 256K (per core) |
| Process | 32 nm | 14 nm-56% |
| Architecture | Gulftown (2010−2011) | Kaby Lake-X (2017) |
| PassMark | 7,135+1% | 7,060 |
| Cinebench R23 Multi | — | 3,726 |
| Geekbench 6 Single | — | 1,419 |
| Geekbench 6 Multi | — | 3,726 |
Memory & Platform
The Core i7-990X uses the LGA1366 socket (PCIe 2.0), while the Core i5-7640X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i7-990X | Core i5-7640X |
|---|---|---|
| Socket | LGA1366 | LGA2066 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | — | DDR4-2666 |
| Max RAM Capacity | — | 64 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Core i7-990X) / Yes (Core i5-7640X). Primary use case: Core i5-7640X targets Desktop.
| Feature | Core i7-990X | Core i5-7640X |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | Yes |
| Target Use | — | Desktop |
Value Analysis
The Core i7-990X launched at $999 MSRP, while the Core i5-7640X debuted at $249. At current prices ($225 vs $85), the Core i5-7640X is $140 cheaper. In terms of value (PassMark points per dollar), the Core i7-990X delivers 31.7 pts/$ vs 83.1 pts/$ for the Core i5-7640X — making the Core i5-7640X the 89.5% better value option.
| Feature | Core i7-990X | Core i5-7640X |
|---|---|---|
| MSRP | $999 | $249-75% |
| Avg Price (30d) | $225 | $85-62% |
| Performance per Dollar | 31.7 | 83.1+162% |
| Release Date | 2011 | 2017 |
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