CPU
GPU
Celeron M 585
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 Celeron M 585 is positioned at rank 430 and the Pentium G3258 is on rank 632, so the Celeron M 585 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Celeron M 585
Performance Per Dollar Pentium G3258
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Celeron M 585 | Pentium G3258 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($72) |
| Longevity | 🛑 Legacy (Merom (2006−2008) / 65 nm) | 🛑 Legacy (Haswell (2013−2015) / 22 nm) |
💎 Value Proposition
| Insight | Celeron M 585 | Pentium G3258 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($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 Celeron M 585 and Pentium G3258
Celeron M 585
The Celeron M 585 is manufactured by Intel. It was released in 20 August 2008 (17 years ago). It is based on the Merom (2006−2008) architecture. It features 1 cores and 1 threads. Max frequency: 2.16 GHz. L2 cache: 1 MB. Built on 65 nm process technology. Socket: PGA478. Thermal design power (TDP): 1 MB. Passmark benchmark score: 2,062 points. Launch price was $70.
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 Celeron M 585 packs 1 cores / 1 threads, while the Pentium G3258 offers 2 cores / 2 threads — the Pentium G3258 has 1 more core. Boost clocks reach 2.16 GHz on the Celeron M 585 versus 3.2 GHz on the Pentium G3258 — a 38.8% clock advantage for the Pentium G3258. The Celeron M 585 uses the Merom (2006−2008) architecture (65 nm), while the Pentium G3258 uses Haswell (2013−2015) (22 nm). In PassMark, the Celeron M 585 scores 2,062 against the Pentium G3258's 2,063 — a 0% lead for the Pentium G3258.
| Feature | Celeron M 585 | Pentium G3258 |
|---|---|---|
| Cores / Threads | 1 / 1 | 2 / 2+100% |
| Boost Clock | 2.16 GHz | 3.2 GHz+48% |
| Base Clock | — | 3.2 GHz |
| L3 Cache | — | 3 MB (total) |
| L2 Cache | 1 MB+300% | 256 kB (per core) |
| Process | 65 nm | 22 nm-66% |
| Architecture | Merom (2006−2008) | Haswell (2013−2015) |
| PassMark | 2,062 | 2,063 |
Memory & Platform
The Celeron M 585 uses the PGA478 socket (PCIe 1.1), while the Pentium G3258 uses LGA1150 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 800 on the Celeron M 585 versus DDR3-1333 on the Pentium G3258 — the Celeron M 585 supports 198.5% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Pentium G3258 supports up to 32 GB of RAM compared to 4 — 155.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 0 (Celeron M 585) vs 16 (Pentium G3258) — the Pentium G3258 offers 16 more lanes for additional GPUs or NVMe drives.
| Feature | Celeron M 585 | Pentium G3258 |
|---|---|---|
| Socket | PGA478 | LGA1150 |
| PCIe Generation | PCIe 1.1 | PCIe 3.0+173% |
| Max RAM Speed | 800+26567% | DDR3-1333 |
| Max RAM Capacity | 4 | 32 GB+838860700% |
| 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: false (Celeron M 585) vs VT-x (Pentium G3258). The Pentium G3258 includes integrated graphics (HD Graphics), while the Celeron M 585 requires a dedicated GPU. Primary use case: Pentium G3258 targets Desktop. Direct competitor: Celeron M 585 rivals Mobile Sempron SI-40.
| Feature | Celeron M 585 | Pentium G3258 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | None | HD Graphics |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | false | VT-x |
| Target Use | — | Desktop |
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