CPU
GPU
Core 2 Quad Q8400
Pentium G3258
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 Quad Q8400 is positioned at rank 975 and the Pentium G3258 is on rank 632, so the Pentium G3258 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 Quad Q8400
Performance Per Dollar Pentium G3258
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core 2 Quad Q8400 | Pentium G3258 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($128) | ✅ More affordable ($72) |
| Longevity | 🛑 Legacy (Yorkfield (2007−2009) / 45 nm) | 🛑 Legacy (Haswell (2013−2015) / 22 nm) |
💎 Value Proposition
| Insight | Core 2 Quad Q8400 | Pentium G3258 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+77%) |
| Upfront Cost | ⚠️ Higher cost ($128) | ✅ More affordable ($72) |
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 Quad Q8400 and Pentium G3258
Core 2 Quad Q8400
The Core 2 Quad Q8400 is manufactured by Intel. It was released in 2008-01-01. It is based on the Yorkfield (2007−2009) architecture. It features 4 cores and 4 threads. Base frequency is 2.66 GHz, with boost up to 0.67 GHz. L3 cache: 0 kB. L2 cache: 4 MB (total). Built on 45 nm process technology. Socket: LGA775. Thermal design power (TDP): 95 Watt. Memory support: DDR1, DDR2, DDR3. Passmark benchmark score: 2,076 points. Launch price was $249.
Pentium G3258
The Pentium G3258 is manufactured by Intel. It was released in 2 June 2014 (11 years ago). It is based on the Haswell (2013−2015) architecture. It features 2 cores and 2 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA1150. Thermal design power (TDP): 53 Watt. Memory support: DDR3. Passmark benchmark score: 2,063 points. Launch price was $77.
Processing Power
The Core 2 Quad Q8400 packs 4 cores / 4 threads, while the Pentium G3258 offers 2 cores / 2 threads — the Core 2 Quad Q8400 has 2 more cores. Boost clocks reach 0.67 GHz on the Core 2 Quad Q8400 versus 3.2 GHz on the Pentium G3258 — a 130.7% clock advantage for the Pentium G3258 (base: 2.66 GHz vs 3.2 GHz). The Core 2 Quad Q8400 uses the Yorkfield (2007−2009) architecture (45 nm), while the Pentium G3258 uses Haswell (2013−2015) (22 nm). In PassMark, the Core 2 Quad Q8400 scores 2,076 against the Pentium G3258's 2,063 — a 0.6% lead for the Core 2 Quad Q8400. L3 cache: 0 kB on the Core 2 Quad Q8400 vs 3 MB (total) on the Pentium G3258.
| Feature | Core 2 Quad Q8400 | Pentium G3258 |
|---|---|---|
| Cores / Threads | 4 / 4+100% | 2 / 2 |
| Boost Clock | 0.67 GHz | 3.2 GHz+378% |
| Base Clock | 2.66 GHz | 3.2 GHz+20% |
| L3 Cache | 0 kB | 3 MB (total) |
| L2 Cache | 4 MB (total)+1500% | 256 kB (per core) |
| Process | 45 nm | 22 nm-51% |
| Architecture | Yorkfield (2007−2009) | Haswell (2013−2015) |
| PassMark | 2,076 | 2,063 |
| Cinebench R23 Multi | 852 | — |
| Geekbench 6 Single | 369 | — |
| Geekbench 6 Multi | 1,155 | — |
Memory & Platform
The Core 2 Quad Q8400 uses the LGA775 socket (PCIe 1.1), while the Pentium G3258 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3 1333 MHz on the Core 2 Quad Q8400 versus DDR3-1333 on the Pentium G3258 — the Core 2 Quad Q8400 supports 200% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Pentium G3258 supports up to 32 GB of RAM compared to 16 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Core 2 Quad Q8400) vs 16 (Pentium G3258) — the Pentium G3258 offers 16 more lanes for additional GPUs or NVMe drives.
| Feature | Core 2 Quad Q8400 | Pentium G3258 |
|---|---|---|
| Socket | LGA775 | LGA1150 |
| PCIe Generation | PCIe 1.1 | PCIe 3.0+173% |
| Max RAM Speed | DDR3 1333 MHz | DDR3-1333 |
| Max RAM Capacity | 16 GB | 32 GB+100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 0 | 16 |
Advanced Features
Only the Pentium G3258 has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: true (Core 2 Quad Q8400) vs VT-x (Pentium G3258). The Pentium G3258 includes integrated graphics (HD Graphics), while the Core 2 Quad Q8400 requires a dedicated GPU. Primary use case: Core 2 Quad Q8400 targets Desktop, Pentium G3258 targets Desktop.
| Feature | Core 2 Quad Q8400 | Pentium G3258 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | HD Graphics |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | true | VT-x |
| Target Use | Desktop | Desktop |
Value Analysis
The Core 2 Quad Q8400 launched at $183 MSRP, while the Pentium G3258 debuted at $75. At current prices ($128 vs $72), the Pentium G3258 is $56 cheaper. In terms of value (PassMark points per dollar), the Core 2 Quad Q8400 delivers 16.2 pts/$ vs 28.7 pts/$ for the Pentium G3258 — making the Pentium G3258 the 55.4% better value option.
| Feature | Core 2 Quad Q8400 | Pentium G3258 |
|---|---|---|
| MSRP | $183 | $75-59% |
| Avg Price (30d) | $128 | $72-44% |
| Performance per Dollar | 16.2 | 28.7+77% |
| Release Date | 2009 | 2014 |
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