Core i7-2840QM vs Core i5-2400
Core i7-2840QM
Core i5-2400
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 i7-2840QM is positioned at rank 311 and the Core i5-2400 is on rank 772, so the Core i7-2840QM offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-2840QM
Performance Per Dollar Core i5-2400
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-2840QM | Core i5-2400 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($25) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) |
💎 Value Proposition
| Insight | Core i7-2840QM | Core i5-2400 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($25) |
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 i7-2840QM and Core i5-2400
Core i7-2840QM
The Core i7-2840QM is manufactured by Intel. It was released in 4 September 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 8 threads. Max frequency: 2.4 GHz. L3 cache: 8 MB. L2 cache: 1 MB. Built on 32 nm process technology. Socket: G2. Thermal design power (TDP): 45 Watt. Passmark benchmark score: 3,842 points. Launch price was $69.
Core i5-2400
The Core i5-2400 is manufactured by Intel. It was released in 9 January 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 4 threads. Base frequency is 3.1 GHz, with boost up to 3.4 GHz. L3 cache: 6144 kB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 3,870 points. Launch price was $60.
Processing Power
The Core i7-2840QM packs 4 cores / 8 threads, matching the Core i5-2400's 4 cores. Boost clocks reach 2.4 GHz on the Core i7-2840QM versus 3.4 GHz on the Core i5-2400 — a 34.5% clock advantage for the Core i5-2400. Both are built on the Sandy Bridge (2011−2013) architecture using a 32 nm process. In PassMark, the Core i7-2840QM scores 3,842 against the Core i5-2400's 3,870 — a 0.7% lead for the Core i5-2400. L3 cache: 8 MB on the Core i7-2840QM vs 6144 kB (total) on the Core i5-2400.
| Feature | Core i7-2840QM | Core i5-2400 |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 4 |
| Boost Clock | 2.4 GHz | 3.4 GHz+42% |
| Base Clock | — | 3.1 GHz |
| L3 Cache | 8 MB+33% | 6144 kB (total) |
| L2 Cache | 1 MB+300% | 256 kB (per core) |
| Process | 32 nm | 32 nm |
| Architecture | Sandy Bridge (2011−2013) | Sandy Bridge (2011−2013) |
| PassMark | 3,842 | 3,870 |
| Geekbench 6 Single | — | 595 |
Memory & Platform
The Core i7-2840QM uses the G2 socket (PCIe 2.0), while the Core i5-2400 uses LGA1155 (PCIe 2.0) — making them incompatible on the same motherboard.
| Feature | Core i7-2840QM | Core i5-2400 |
|---|---|---|
| Socket | G2 | LGA1155 |
| PCIe Generation | PCIe 2.0 | PCIe 2.0 |
| Max RAM Speed | — | DDR3-1333 |
| Max RAM Capacity | — | 32 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Core i7-2840QM) / VT-x, VT-d, EPT (Core i5-2400). The Core i5-2400 includes integrated graphics (HD Graphics 2000), while the Core i7-2840QM requires a dedicated GPU. Primary use case: Core i5-2400 targets Legacy Desktop. Direct competitor: Core i5-2400 rivals Phenom II X4 975.
| Feature | Core i7-2840QM | Core i5-2400 |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | HD Graphics 2000 |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d, EPT |
| Target Use | — | Legacy Desktop |
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