Athlon II X2 260u vs Core 2 Duo T9400
Athlon II X2 260u
Core 2 Duo T9400
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 Athlon II X2 260u is positioned at rank 873 and the Core 2 Duo T9400 is on rank 796, so the Core 2 Duo T9400 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Athlon II X2 260u
Performance Per Dollar Core 2 Duo T9400
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Athlon II X2 260u | Core 2 Duo T9400 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($10) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Regor (2009−2013) / 45 nm) | 🛑 Legacy (Penryn (2008−2011) / 45 nm) |
💎 Value Proposition
| Insight | Athlon II X2 260u | Core 2 Duo T9400 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($10) | ✅ 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 Athlon II X2 260u and Core 2 Duo T9400
Athlon II X2 260u
The Athlon II X2 260u is manufactured by AMD. It was released in 20 October 2009 (16 years ago). It is based on the Regor (2009−2013) architecture. It features 2 cores and 2 threads. Max frequency: 1.8 GHz. L3 cache: 0 kB. L2 cache: 1 MB. Built on 45 nm process technology. Socket: AM3. Thermal design power (TDP): 25 Watt. Memory support: DDR3. Passmark benchmark score: 990 points. Launch price was $83.
Core 2 Duo T9400
The Core 2 Duo T9400 is manufactured by Intel. It was released in 15 July 2008 (17 years ago). It is based on the Penryn (2008−2011) architecture. It features 2 cores and 2 threads. Base frequency is 2.53 GHz, with boost up to 2.53 GHz. L3 cache: 6 MB L2 Cache. L2 cache: 6 MB. Built on 45 nm process technology. Socket: PGA478. Thermal design power (TDP): 35 Watt. Passmark benchmark score: 1,004 points. Launch price was $316.
Processing Power
Both the Athlon II X2 260u and Core 2 Duo T9400 share an identical 2-core/2-thread configuration. Boost clocks reach 1.8 GHz on the Athlon II X2 260u versus 2.53 GHz on the Core 2 Duo T9400 — a 33.7% clock advantage for the Core 2 Duo T9400. The Athlon II X2 260u uses the Regor (2009−2013) architecture (45 nm), while the Core 2 Duo T9400 uses Penryn (2008−2011) (45 nm). In PassMark, the Athlon II X2 260u scores 990 against the Core 2 Duo T9400's 1,004 — a 1.4% lead for the Core 2 Duo T9400. L3 cache: 0 kB on the Athlon II X2 260u vs 6 MB L2 Cache on the Core 2 Duo T9400.
| Feature | Athlon II X2 260u | Core 2 Duo T9400 |
|---|---|---|
| Cores / Threads | 2 / 2 | 2 / 2 |
| Boost Clock | 1.8 GHz | 2.53 GHz+41% |
| Base Clock | — | 2.53 GHz |
| L3 Cache | 0 kB | 6 MB L2 Cache |
| L2 Cache | 1 MB | 6 MB+500% |
| Process | 45 nm | 45 nm |
| Architecture | Regor (2009−2013) | Penryn (2008−2011) |
| PassMark | 990 | 1,004+1% |
| Geekbench 6 Single | — | 320 |
Memory & Platform
The Athlon II X2 260u uses the AM3 socket (PCIe 2.0), while the Core 2 Duo T9400 uses PGA478 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches 1333 on the Athlon II X2 260u versus DDR3-1066 on the Core 2 Duo T9400 — the Athlon II X2 260u supports 199.1% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both feature 2-channel memory with ECC support. Chipset compatibility: AM2+,AM3 (Athlon II X2 260u) and GM45,PM45 (Core 2 Duo T9400).
| Feature | Athlon II X2 260u | Core 2 Duo T9400 |
|---|---|---|
| Socket | AM3 | PGA478 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | 1333+44333% | DDR3-1066 |
| Max RAM Capacity | 16 | — |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 0 | — |
Advanced Features
Neither processor supports overclocking. Virtualization support: true (Athlon II X2 260u) vs VT-x (Core 2 Duo T9400). Primary use case: Core 2 Duo T9400 targets Budget. Direct competitor: Athlon II X2 260u rivals Core 2 Duo SU9400; Core 2 Duo T9400 rivals Athlon Silver 3050U.
| Feature | Athlon II X2 260u | Core 2 Duo T9400 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | — |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | true | VT-x |
| Target Use | — | Budget |
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