Core i7-3940XM vs Opteron 6378
Core i7-3940XM
Opteron 6378
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 i7-3940XM is positioned at rank 936 and the Opteron 6378 is on rank 57, so the Opteron 6378 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-3940XM
Performance Per Dollar Opteron 6378
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-3940XM | Opteron 6378 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | 🛑 Legacy (Ivy Bridge (2012−2013) / 22 nm) | 🛑 Legacy (Abu Dhabi (2012) / 32 nm) |
💎 Value Proposition
| Insight | Core i7-3940XM | Opteron 6378 |
|---|---|---|
| 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 i7-3940XM and Opteron 6378
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.
Opteron 6378
The Opteron 6378 is manufactured by AMD. It was released in 5 November 2012 (13 years ago). It is based on the Abu Dhabi (2012) architecture. It features 16 cores and 16 threads. Base frequency is 2.4 GHz, with boost up to 3.3 GHz. L3 cache: 8 MB (total). L2 cache: 16 MB. Built on 32 nm process technology. Socket: G34. Thermal design power (TDP): 115 Watt. Memory support: DDR3. Passmark benchmark score: 5,889 points. Launch price was $396.
Processing Power
The Core i7-3940XM packs 4 cores / 8 threads, while the Opteron 6378 offers 16 cores / 16 threads — the Opteron 6378 has 12 more cores. Boost clocks reach 3.9 GHz on the Core i7-3940XM versus 3.3 GHz on the Opteron 6378 — a 16.7% clock advantage for the Core i7-3940XM (base: 3 GHz vs 2.4 GHz). The Core i7-3940XM uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Opteron 6378 uses Abu Dhabi (2012) (32 nm). In PassMark, the Core i7-3940XM scores 5,957 against the Opteron 6378's 5,889 — a 1.1% lead for the Core i7-3940XM. Both processors carry 8 MB (total) of L3 cache.
| Feature | Core i7-3940XM | Opteron 6378 |
|---|---|---|
| Cores / Threads | 4 / 8 | 16 / 16+300% |
| Boost Clock | 3.9 GHz+18% | 3.3 GHz |
| Base Clock | 3 GHz+25% | 2.4 GHz |
| L3 Cache | 8 MB (total) | 8 MB (total) |
| L2 Cache | 256K (per core) | 16 MB+6300% |
| Process | 22 nm-31% | 32 nm |
| Architecture | Ivy Bridge (2012−2013) | Abu Dhabi (2012) |
| PassMark | 5,957+1% | 5,889 |
| Geekbench 6 Single | 720 | — |
Memory & Platform
The Core i7-3940XM uses the PGA988 socket (PCIe 3.0), while the Opteron 6378 uses G34 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Core i7-3940XM | Opteron 6378 |
|---|---|---|
| Socket | PGA988 | G34 |
| PCIe Generation | PCIe 3.0+50% | PCIe 2.0 |
| Max RAM Speed | DDR3-1600 | — |
| Max RAM Capacity | 32 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 16 | — |
Advanced Features
Virtualization: VT-x, VT-d, EPT (Core i7-3940XM) / not specified (Opteron 6378). The Core i7-3940XM includes integrated graphics (HD Graphics 4000), while the Opteron 6378 requires a dedicated GPU. Primary use case: Core i7-3940XM targets Extreme Performance Laptop. Direct competitor: Core i7-3940XM rivals A10-5750M.
| Feature | Core i7-3940XM | Opteron 6378 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | HD Graphics 4000 | — |
| Unlocked | Yes | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d, EPT | — |
| Target Use | Extreme Performance Laptop | — |
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