Core i7-7700K vs Core i7-7740X
Core i7-7700K
Core i7-7740X
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 i7-7700K is positioned at rank 577 and the Core i7-7740X is on rank 614, so the Core i7-7700K offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-7700K
Performance Per Dollar Core i7-7740X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-7700K | Core i7-7740X |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($140) | ⚠️ Higher cost ($150) |
| Longevity | ✨ Modern (Kaby Lake (2016−2019) / 14 nm) | ✨ Modern (Kaby Lake-X (2017) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-7700K | Core i7-7740X |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+7%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($140) | ⚠️ Higher cost ($150) |
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 i7-7700K and Core i7-7740X
Core i7-7700K
The Core i7-7700K is manufactured by Intel. It was released in 3 January 2017 (8 years ago). It is based on the Kaby Lake (2016−2019) architecture. It features 4 cores and 8 threads. Base frequency is 4.2 GHz, with boost up to 4.5 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 91 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 9,625 points. Launch price was $339.
Core i7-7740X
The Core i7-7740X 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 8 threads. Base frequency is 4.3 GHz, with boost up to 4.5 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 112 Watt. Memory support: DDR4. Passmark benchmark score: 9,678 points. Launch price was $339.
Processing Power
Both the Core i7-7700K and Core i7-7740X share an identical 4-core/8-thread configuration. Boost clocks reach 4.5 GHz on the Core i7-7700K versus 4.5 GHz on the Core i7-7740X — identical boost frequencies (base: 4.2 GHz vs 4.3 GHz). The Core i7-7700K uses the Kaby Lake (2016−2019) architecture (14 nm), while the Core i7-7740X uses Kaby Lake-X (2017) (14 nm). In PassMark, the Core i7-7700K scores 9,625 against the Core i7-7740X's 9,678 — a 0.5% lead for the Core i7-7740X. Both processors carry 8 MB (total) of L3 cache.
| Feature | Core i7-7700K | Core i7-7740X |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 8 |
| Boost Clock | 4.5 GHz | 4.5 GHz |
| Base Clock | 4.2 GHz | 4.3 GHz+2% |
| L3 Cache | 8 MB (total) | 8 MB (total) |
| L2 Cache | 256K (per core) | 256K (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Kaby Lake (2016−2019) | Kaby Lake-X (2017) |
| PassMark | 9,625 | 9,678 |
Memory & Platform
The Core i7-7700K uses the LGA1151 socket (PCIe 3.0), while the Core i7-7740X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i7-7700K | Core i7-7740X |
|---|---|---|
| Socket | LGA1151 | LGA2066 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | — | DDR4-2666 |
| Max RAM Capacity | — | 64 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Core i7-7700K) / VT-x, VT-d (Core i7-7740X). Primary use case: Core i7-7740X targets Desktop.
| Feature | Core i7-7700K | Core i7-7740X |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Desktop |
Value Analysis
The Core i7-7700K launched at $305 MSRP, while the Core i7-7740X debuted at $339. At current prices ($140 vs $150), the Core i7-7700K is $10 cheaper. In terms of value (PassMark points per dollar), the Core i7-7700K delivers 68.8 pts/$ vs 64.5 pts/$ for the Core i7-7740X — making the Core i7-7700K the 6.3% better value option.
| Feature | Core i7-7700K | Core i7-7740X |
|---|---|---|
| MSRP | $305-10% | $339 |
| Avg Price (30d) | $140-7% | $150 |
| Performance per Dollar | 68.8+7% | 64.5 |
| Release Date | 2017 | 2017 |
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