Core i7-3840QM vs Core i7-3940XM
Core i7-3840QM
Core i7-3940XM
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 i7-3840QM is positioned at rank 238 and the Core i7-3940XM is on rank 936, so the Core i7-3840QM offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-3840QM
Performance Per Dollar Core i7-3940XM
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-3840QM | Core i7-3940XM |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Ivy Bridge (2012−2013) / 22 nm) | 🛑 Legacy (Ivy Bridge (2012−2013) / 22 nm) |
💎 Value Proposition
| Insight | Core i7-3840QM | Core i7-3940XM |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 i7-3840QM and Core i7-3940XM
Core i7-3840QM
The Core i7-3840QM is manufactured by Intel. It was released in 3 September 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 8 threads. Base frequency is 2.8 GHz, with boost up to 3.8 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: PGA988. Thermal design power (TDP): 45 Watt. Memory support: DDR3. Passmark benchmark score: 5,871 points. Launch price was $568.
Core i7-3940XM
The Core i7-3940XM is manufactured by Intel. It was released in 3 September 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 8 threads. Base frequency is 3 GHz, with boost up to 3.9 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: PGA988. Thermal design power (TDP): 55 Watt. Memory support: DDR3. Passmark benchmark score: 5,957 points. Launch price was $1,096.
Processing Power
Both the Core i7-3840QM and Core i7-3940XM share an identical 4-core/8-thread configuration. Boost clocks reach 3.8 GHz on the Core i7-3840QM versus 3.9 GHz on the Core i7-3940XM — a 2.6% clock advantage for the Core i7-3940XM (base: 2.8 GHz vs 3 GHz). Both are built on the Ivy Bridge (2012−2013) architecture using a 22 nm process. In PassMark, the Core i7-3840QM scores 5,871 against the Core i7-3940XM's 5,957 — a 1.5% lead for the Core i7-3940XM. Geekbench 6 single-core — the metric most relevant to gaming — records 676 vs 720, a 6.3% lead for the Core i7-3940XM that directly translates to higher frame rates. Both processors carry 8 MB (total) of L3 cache.
| Feature | Core i7-3840QM | Core i7-3940XM |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 8 |
| Boost Clock | 3.8 GHz | 3.9 GHz+3% |
| Base Clock | 2.8 GHz | 3 GHz+7% |
| L3 Cache | 8 MB (total) | 8 MB (total) |
| L2 Cache | 256K (per core) | 256K (per core) |
| Process | 22 nm | 22 nm |
| Architecture | Ivy Bridge (2012−2013) | Ivy Bridge (2012−2013) |
| PassMark | 5,871 | 5,957+1% |
| Geekbench 6 Single | 676 | 720+7% |
Memory & Platform
Both processors use the PGA988 socket with PCIe 3.0. Both support up to DDR3-1600 memory speed. Both support up to 32 GB of RAM. Both feature 2-channel memory with ECC support. Both provide 16 PCIe lanes. Chipset compatibility: HM75,HM76,HM77,QM77,QS77 (Core i7-3840QM) and HM75,HM76,HM77,QM77,QS77 (Core i7-3940XM).
| Feature | Core i7-3840QM | Core i7-3940XM |
|---|---|---|
| Socket | PGA988 | PGA988 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR3-1600 | DDR3-1600 |
| Max RAM Capacity | 32 GB | 32 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 16 |
Advanced Features
Only the Core i7-3940XM has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support VT-x, VT-d, EPT virtualization. Both include integrated graphics — HD Graphics 4000 (Core i7-3840QM) and HD Graphics 4000 (Core i7-3940XM) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core i7-3840QM targets Mobile Workstation, Core i7-3940XM targets Extreme Performance Laptop. Direct competitor: Core i7-3840QM rivals A10-5750M; Core i7-3940XM rivals A10-5750M.
| Feature | Core i7-3840QM | Core i7-3940XM |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | HD Graphics 4000 | HD Graphics 4000 |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | VT-x, VT-d, EPT | VT-x, VT-d, EPT |
| Target Use | Mobile Workstation | Extreme Performance Laptop |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Core i7-3840QM and Core i7-3940XM
