Core 2 Duo E7400 vs Celeron 2981U
Core 2 Duo E7400
Celeron 2981U
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 2 Duo E7400 is positioned at rank 544 and the Celeron 2981U is on rank 426, so the Celeron 2981U offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core 2 Duo E7400
Performance Per Dollar Celeron 2981U
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Duo E7400 | Celeron 2981U |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($137) |
| Longevity | 🛑 Legacy (Wolfdale (2008−2010) / 45 nm) | 🛑 Legacy (Haswell (2013−2015) / 22 nm) |
💎 Value Proposition
| Insight | Core 2 Duo E7400 | Celeron 2981U |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($137) |
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 2 Duo E7400 and Celeron 2981U
Core 2 Duo E7400
The Core 2 Duo E7400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Wolfdale (2008−2010) architecture. It features 2 cores and 2 threads. Base frequency is 2.8 GHz, with boost up to 2.8 GHz. L3 cache: 0 kB. L2 cache: 3 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 65 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 1,043 points. Launch price was $249.
Celeron 2981U
The Celeron 2981U is manufactured by Intel. It was released in 2007-01-01. It is based on the Haswell (2013−2015) architecture. It features 2 cores and 2 threads. Base frequency is 1.6 GHz, with boost up to 1.6 GHz. L3 cache: 2 MB. L2 cache: 512 kB. Built on 22 nm process technology. Socket: FCBGA1168. Thermal design power (TDP): 15 Watt. Memory support: DDR3. Passmark benchmark score: 1,036 points. Launch price was $69.
Processing Power
Both the Core 2 Duo E7400 and Celeron 2981U share an identical 2-core/2-thread configuration. Boost clocks reach 2.8 GHz on the Core 2 Duo E7400 versus 1.6 GHz on the Celeron 2981U — a 54.5% clock advantage for the Core 2 Duo E7400 (base: 2.8 GHz vs 1.6 GHz). The Core 2 Duo E7400 uses the Wolfdale (2008−2010) architecture (45 nm), while the Celeron 2981U uses Haswell (2013−2015) (22 nm). In PassMark, the Core 2 Duo E7400 scores 1,043 against the Celeron 2981U's 1,036 — a 0.7% lead for the Core 2 Duo E7400. L3 cache: 0 kB on the Core 2 Duo E7400 vs 2 MB on the Celeron 2981U.
| Feature | Core 2 Duo E7400 | Celeron 2981U |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 2.8 GHz+75% | 1.6 GHz |
| Base Clock | 2.8 GHz+75% | 1.6 GHz |
| L3 Cache | 0 kB | 2 MB |
| L2 Cache | 3 MB (total)+500% | 512 kB |
| Process | 45 nm | 22 nm-51% |
| Architecture | Wolfdale (2008−2010) | Haswell (2013−2015) |
| PassMark | 1,043 | 1,036 |
Memory & Platform
The Core 2 Duo E7400 uses the LGA775 socket (PCIe 1.1), while the Celeron 2981U uses FCBGA1168 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 1066 on the Core 2 Duo E7400 versus DDR3L-1600 on the Celeron 2981U — the Core 2 Duo E7400 supports 198.9% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 16 of RAM. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core 2 Duo E7400) vs 12 (Celeron 2981U) — the Core 2 Duo E7400 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: P35,G31,G33,P45 (Core 2 Duo E7400) and Wildcat Point-LP (Celeron 2981U).
| Feature | Core 2 Duo E7400 | Celeron 2981U |
|---|---|---|
| Socket | LGA775 | FCBGA1168 |
| PCIe Generation | PCIe 1.1 | PCIe 3.0+173% |
| Max RAM Speed | 1066+35433% | DDR3L-1600 |
| Max RAM Capacity | 16 | 16 GB+104857500% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16+33% | 12 |
Advanced Features
Neither processor supports overclocking. Virtualization support: true (Core 2 Duo E7400) vs VT-x (Celeron 2981U). The Celeron 2981U includes integrated graphics (HD Graphics (Haswell)), while the Core 2 Duo E7400 requires a dedicated GPU. Primary use case: Celeron 2981U targets Budget. Direct competitor: Core 2 Duo E7400 rivals Athlon II X2 245; Celeron 2981U rivals Pentium 2117U.
| Feature | Core 2 Duo E7400 | Celeron 2981U |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | HD Graphics (Haswell) |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | true | VT-x |
| Target Use | — | Budget |
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