CPU
GPU
Core i7-2675QM
Atom C3958
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 i7-2675QM is positioned at rank 1070 and the Atom C3958 is on rank 902, so the Atom C3958 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-2675QM
Performance Per Dollar Atom C3958
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-2675QM | Atom C3958 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($378) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | ✨ Modern (Goldmont (2016−2017) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-2675QM | Atom C3958 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($378) | ✅ More affordable ($0) |
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 i7-2675QM and Atom C3958
Core i7-2675QM
The Core i7-2675QM is manufactured by Intel. It was released in 12 October 2011 (14 years ago). It is based on the Sandy Bridge (2011−2013) architecture. It features 4 cores and 8 threads. Base frequency is 2.2 GHz, with boost up to 3.1 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 32 nm process technology. Socket: FCBGA1224. Thermal design power (TDP): 45 Watt. Memory support: DDR3-1066, DDR3-1333. Passmark benchmark score: 3,913 points. Launch price was $378.
Atom C3958
The Atom C3958 is manufactured by Intel. It was released in 15 August 2017 (8 years ago). It is based on the Goldmont (2016−2017) architecture. It features 16 cores and 16 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 16 MB. L2 cache: 16 MB. Built on 14 nm process technology. Socket: FCBGA1310. Thermal design power (TDP): 31 Watt. Memory support: DDR4: 2400. Passmark benchmark score: 3,929 points. Launch price was $449.
Processing Power
The Core i7-2675QM packs 4 cores / 8 threads, while the Atom C3958 offers 16 cores / 16 threads — the Atom C3958 has 12 more cores. Boost clocks reach 3.1 GHz on the Core i7-2675QM versus 2 GHz on the Atom C3958 — a 43.1% clock advantage for the Core i7-2675QM (base: 2.2 GHz vs 2 GHz). The Core i7-2675QM uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Atom C3958 uses Goldmont (2016−2017) (14 nm). In PassMark, the Core i7-2675QM scores 3,913 against the Atom C3958's 3,929 — a 0.4% lead for the Atom C3958. L3 cache: 6 MB (total) on the Core i7-2675QM vs 16 MB on the Atom C3958.
| Feature | Core i7-2675QM | Atom C3958 |
|---|---|---|
| Cores / Threads | 4 / 8 | 16 / 16+300% |
| Boost Clock | 3.1 GHz+55% | 2 GHz |
| Base Clock | 2.2 GHz+10% | 2 GHz |
| L3 Cache | 6 MB (total) | 16 MB+167% |
| L2 Cache | 256K (per core) | 16 MB+6300% |
| Process | 32 nm | 14 nm-56% |
| Architecture | Sandy Bridge (2011−2013) | Goldmont (2016−2017) |
| PassMark | 3,913 | 3,929 |
Memory & Platform
The Core i7-2675QM uses the FCBGA1224 socket (PCIe 2.0), while the Atom C3958 uses FCBGA1310 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i7-2675QM versus DDR4-2400 on the Atom C3958 — the Atom C3958 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Atom C3958 supports up to 256 GB of RAM compared to 16 GB — 176.5% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i7-2675QM) vs 12 (Atom C3958) — the Core i7-2675QM offers 4 more lanes for additional GPUs or NVMe drives.
| Feature | Core i7-2675QM | Atom C3958 |
|---|---|---|
| Socket | FCBGA1224 | FCBGA1310 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1333 | DDR4-2400+33% |
| Max RAM Capacity | 16 GB | 256 GB+1500% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 16+33% | 12 |
Advanced Features
Virtualization: VT-x (Core i7-2675QM) / not specified (Atom C3958). The Core i7-2675QM includes integrated graphics (HD Graphics 3000), while the Atom C3958 requires a dedicated GPU. Primary use case: Core i7-2675QM targets Mobile.
| Feature | Core i7-2675QM | Atom C3958 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | HD Graphics 3000 | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x | — |
| Target Use | Mobile | — |
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