CPU Comparison
Core i7-7740X vs Intel Core i7-7740X
A side-by-side comparison of specs, performance and value. The Intel Core i7-7740X is a unique high-end desktop (HEDT) processor launched in June 2017. Based on the Kaby Lake-X architecture, it is essentially a mainstream quad-core die repurposed for the enthusiast LGA 2066 socket. Featuring 4 cores and 8 threads, it operates at a high base frequency of 4.3 GHz and boosts up to 4.6 GHz, catering specifically to users seeking maximum single-threaded performance. The X suffix denotes an unlocked multiplier, allowing for further overclocking. With a 112W TDP, it demands robust cooling. Notably, it lacks integrated graphics and does not support quad-channel memory, differentiating it from true HEDT Skylake-X parts. It includes 8MB of L3 cache and supports dual-channel DDR4 memory. The i7-7740X was a controversial product, offering little practical benefit over the cheaper LGA 1151 i7-7700K, but it allowed enthusiasts to access high clock speeds on the X299 platform, albeit with a limited feature set.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Quad-core limits performance in heavily parallelized applications compared to higher core-count alternatives.
Gaming
Paired with a strong discrete GPU, the high clocks enable smooth high-refresh gaming, though newer platforms offer better efficiency and future-proofing.
Virtualization
Adequate for light VM workloads, but limited core count and memory channels make it less suitable for heavy virtualization.
Efficiency
112 W TDP for a quad-core results in higher power draw per core than many modern designs.
Specialized Performance
AI / ML
No data
- No dedicated AI acceleration hardware
- Suited only for CPU-bound inference and older ML frameworks
Content Creation
No data
Gaming
No data
- Strong single-threaded core performance keeps frame rates competitive in many titles
- Best paired with mid-to-high-end discrete GPUs
- Modern gaming CPUs with more cores and faster memory often deliver better 1% lows
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- High single-core frequencies
- Unlocked for overclocking
- Access to X299 chipset features
Cons
- Only 4 cores on an HEDT platform
- Limited to dual-channel memory
- No integrated graphics
- Poor value compared to true HEDT or mainstream parts
Pros
- High out-of-box clocks
- Unlocked for overclocking
- X299 platform offers flexible chipset PCIe lanes and storage options
- Strong single-threaded performance for its era
- Can breathe life into idle LGA2066 boards
Cons
- Quad core count limits multi-threaded performance
- Only 16 CPU PCIe lanes
- No integrated graphics
- 112 W TDP for four cores is relatively power-hungry
- Platform is discontinued with limited future upgrade options
Competitors & Alternatives
Core i7-7740X
- Intel Core i7-7700KRival
Performance Desktop
- Compare head-to-headIntel Core i7-7800XRival
High-End Desktop
- AMD Ryzen 7 1800XRival
High-End Desktop
- Intel Core i5-7640XRival
High-End Desktop
- AMD Ryzen 5 1600XRival
Performance Desktop
- AMD Ryzen 7 1700Alt
More cores and better multi-threading for less money.
Actual high-end HEDT performance.
Compare head-to-head- AMD Threadripper 1900XAlt
Better HEDT platform features and core count.
Intel Core i7-7740X
- AMD Ryzen 5 1600XRival
Gaming & Productivity
- AMD Ryzen 7 1700Rival
Creator
- Intel Core i7-7700KRival
Gaming
- Intel Core i5-7640XRival
Gaming
- Compare head-to-headIntel Core i7-7820XRival
Workstation
More cores and better value for gaming and productivity.
Compare head-to-head- AMD Ryzen 7 2700XAlt
Higher multi-threaded performance and efficiency.
Strong all-round performance on mainstream platforms.
Compare head-to-headMore cores and newer platform features.
Compare head-to-head- AMD Ryzen 5 3600Alt
Much better performance per watt and platform longevity.
Our Verdict on Each
An oddity in Intel's lineup, offering high clocks but limited core count and features for the HEDT platform. Hard to recommend over mainstream alternatives.
Best for: Niche collection or specific legacy X299 troubleshooting
Read the full reviewA niche, high-clock quad-core for X299 that delivers strong single-threaded performance but lacks the PCIe and memory bandwidth of Skylake-X siblings, making sense only at low prices for specific reuse scenarios.
Best for: Reusing an existing LGA2066 board for gaming or general tasks when the CPU is acquired at very low cost.
Read the full reviewFrequently Asked Questions
Which is better, Core i7-7740X or Intel Core i7-7740X?
Based on our editorial ratings, the Intel Core i7-7740X comes out ahead with a score of 7/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Core i7-7740X or Intel Core i7-7740X?
For gaming, the Intel Core i7-7740X leads with a gaming performance score of 78/100 among Core i7-7740X and Intel Core i7-7740X.
Do Core i7-7740X and Intel Core i7-7740X use the same socket?
No. They use different sockets (Core i7-7740X: LGA 2066, Intel Core i7-7740X: LGA2066), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Core i7-7740X posts the highest multi-core benchmark score. Multi-core results: Core i7-7740X (0). Benchmark figures are approximate and workload-dependent.