Core i3-2125 vs Core 2 Duo T5870
Core i3-2125
Core 2 Duo T5870
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 i3-2125 is positioned at rank 892 and the Core 2 Duo T5870 is on rank 538, so the Core 2 Duo T5870 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i3-2125
Performance Per Dollar Core 2 Duo T5870
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i3-2125 | Core 2 Duo T5870 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($15) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Merom (2006−2008) / 65 nm) |
💎 Value Proposition
| Insight | Core i3-2125 | Core 2 Duo T5870 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($15) | ✅ 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 i3-2125 and Core 2 Duo T5870
Core i3-2125
The Core i3-2125 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 2 cores and 4 threads. Base frequency is 3.3 GHz, with boost up to 3.3 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 65 Watt. Memory support: DDR3. Passmark benchmark score: 2,082 points. Launch price was $170.
Core 2 Duo T5870
The Core 2 Duo T5870 is manufactured by Intel. It was released in 2008-01-01. It is based on the Merom (2006−2008) architecture. It features 2 cores and 2 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 2 MB L2 Cache. L2 cache: 2 MB. Built on 65 nm process technology. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 2,089 points. Launch price was $249.
Processing Power
The Core i3-2125 packs 2 cores / 4 threads, matching the Core 2 Duo T5870's 2 cores. Boost clocks reach 3.3 GHz on the Core i3-2125 versus 2 GHz on the Core 2 Duo T5870 — a 49.1% clock advantage for the Core i3-2125 (base: 3.3 GHz vs 2 GHz). The Core i3-2125 uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Core 2 Duo T5870 uses Merom (2006−2008) (65 nm). In PassMark, the Core i3-2125 scores 2,082 against the Core 2 Duo T5870's 2,089 — a 0.3% lead for the Core 2 Duo T5870. Geekbench 6 single-core — the metric most relevant to gaming — records 499 vs 203, a 84.3% lead for the Core i3-2125 that directly translates to higher frame rates. L3 cache: 3 MB (total) on the Core i3-2125 vs 2 MB L2 Cache on the Core 2 Duo T5870.
| Feature | Core i3-2125 | Core 2 Duo T5870 |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 2 |
| Boost Clock | 3.3 GHz+65% | 2 GHz |
| Base Clock | 3.3 GHz+65% | 2 GHz |
| L3 Cache | 3 MB (total)+50% | 2 MB L2 Cache |
| L2 Cache | 256 kB (per core) | 2 MB+700% |
| Process | 32 nm-51% | 65 nm |
| Architecture | Sandy Bridge (2011−2013) | Merom (2006−2008) |
| PassMark | 2,082 | 2,089 |
| Geekbench 6 Single | 499+146% | 203 |
| Geekbench 6 Multi | — | 314 |
Memory & Platform
Maximum memory speed reaches DDR3-1333 on the Core i3-2125 versus DDR2-800 on the Core 2 Duo T5870 — the Core i3-2125 supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i3-2125 supports up to 32 GB of RAM compared to 4 GB — 155.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 16 (Core i3-2125) vs 0 (Core 2 Duo T5870) — the Core i3-2125 offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H61,H67,P67,Z68,B65,Q65,Q67,B75,Q75,H77,Z75,Z77 (Core i3-2125) and GM965,GM45,PM45 (Core 2 Duo T5870).
| Feature | Core i3-2125 | Core 2 Duo T5870 |
|---|---|---|
| Socket | LGA1155 | — |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | DDR3-1333+50% | DDR2-800 |
| Max RAM Capacity | 32 GB+700% | 4 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 0 |
Advanced Features
Neither processor supports overclocking. Virtualization support: VT-x, EPT (Core i3-2125) vs VT-x (Core 2 Duo T5870). The Core i3-2125 includes integrated graphics (HD Graphics 3000), while the Core 2 Duo T5870 requires a dedicated GPU. Primary use case: Core i3-2125 targets Budget Desktop, Core 2 Duo T5870 targets Legacy Mobile. Direct competitor: Core i3-2125 rivals A8-3850.
| Feature | Core i3-2125 | Core 2 Duo T5870 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | HD Graphics 3000 | None |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x, EPT | VT-x |
| Target Use | Budget Desktop | Legacy Mobile |
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