Core i3-2120T vs Athlon 64 X2 5400+
Core i3-2120T
Athlon 64 X2 5400+
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 i3-2120T is positioned at rank 956 and the Athlon 64 X2 5400+ is on rank 1091, so the Core i3-2120T offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i3-2120T
Performance Per Dollar Athlon 64 X2 5400+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i3-2120T | Athlon 64 X2 5400+ |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($38) | ⚠️ Higher cost ($78) |
| Longevity | 🛑 Legacy (Sandy Bridge (2011−2013) / 32 nm) | 🛑 Legacy (Windsor (2006−2007) / 90 nm) |
💎 Value Proposition
| Insight | Core i3-2120T | Athlon 64 X2 5400+ |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+103%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($38) | ⚠️ Higher cost ($78) |
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 i3-2120T and Athlon 64 X2 5400+
Core i3-2120T
The Core i3-2120T 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 2.6 GHz, with boost up to 2.6 GHz. L3 cache: 3 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1155. Thermal design power (TDP): 35 Watt. Memory support: DDR3. Passmark benchmark score: 1,570 points. Launch price was $50.
Athlon 64 X2 5400+
The Athlon 64 X2 5400+ is manufactured by AMD. It was released in 2009-01-01. It is based on the Windsor (2006−2007) architecture. It features 2 cores and 2 threads. Max frequency: 2.8 GHz. L3 cache: 0 kB. L2 cache: 512 kB. Built on 90 nm process technology. Socket: AM2. Thermal design power (TDP): 89 Watt. Passmark benchmark score: 1,585 points. Launch price was $149.
Processing Power
The Core i3-2120T packs 2 cores / 4 threads, matching the Athlon 64 X2 5400+'s 2 cores. Boost clocks reach 2.6 GHz on the Core i3-2120T versus 2.8 GHz on the Athlon 64 X2 5400+ — a 7.4% clock advantage for the Athlon 64 X2 5400+. The Core i3-2120T uses the Sandy Bridge (2011−2013) architecture (32 nm), while the Athlon 64 X2 5400+ uses Windsor (2006−2007) (90 nm). In PassMark, the Core i3-2120T scores 1,570 against the Athlon 64 X2 5400+'s 1,585 — a 1% lead for the Athlon 64 X2 5400+. L3 cache: 3 MB (total) on the Core i3-2120T vs 0 kB on the Athlon 64 X2 5400+.
| Feature | Core i3-2120T | Athlon 64 X2 5400+ |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 2 |
| Boost Clock | 2.6 GHz | 2.8 GHz+8% |
| Base Clock | 2.6 GHz | — |
| L3 Cache | 3 MB (total) | 0 kB |
| L2 Cache | 256 kB (per core) | 512 kB+100% |
| Process | 32 nm-64% | 90 nm |
| Architecture | Sandy Bridge (2011−2013) | Windsor (2006−2007) |
| PassMark | 1,570 | 1,585 |
| Geekbench 6 Single | 403 | — |
Memory & Platform
The Core i3-2120T uses the LGA1155 socket (PCIe 2.0), while the Athlon 64 X2 5400+ uses AM2 (PCIe 1.1) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Core i3-2120T versus DDR2-800 on the Athlon 64 X2 5400+ — the Core i3-2120T supports 40% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core i3-2120T 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: 16 (Core i3-2120T) vs 0 (Athlon 64 X2 5400+) — the Core i3-2120T offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: H61,B65,Q65,Q67,H67,P67,Z68,B75,Q75,Q77,H77,Z75,Z77 (Core i3-2120T) and AMD AM2 (Athlon 64 X2 5400+).
| Feature | Core i3-2120T | Athlon 64 X2 5400+ |
|---|---|---|
| Socket | LGA1155 | AM2 |
| PCIe Generation | PCIe 2.0+82% | PCIe 1.1 |
| Max RAM Speed | DDR3-1333+50% | DDR2-800 |
| Max RAM Capacity | 32 GB+100% | 16 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ❌ |
| PCIe Lanes | 16 | 0 |
Advanced Features
Virtualization: VT-x, EPT (Core i3-2120T) / not specified (Athlon 64 X2 5400+). The Core i3-2120T includes integrated graphics (HD Graphics 2000), while the Athlon 64 X2 5400+ requires a dedicated GPU. Primary use case: Core i3-2120T targets Budget Desktop. Direct competitor: Core i3-2120T rivals A6-3500.
| Feature | Core i3-2120T | Athlon 64 X2 5400+ |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | HD Graphics 2000 | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, EPT | — |
| Target Use | Budget Desktop | — |
Value Analysis
The Core i3-2120T launched at $127 MSRP, while the Athlon 64 X2 5400+ debuted at $485. At current prices ($38 vs $78), the Core i3-2120T is $40 cheaper. In terms of value (PassMark points per dollar), the Core i3-2120T delivers 41.3 pts/$ vs 20.3 pts/$ for the Athlon 64 X2 5400+ — making the Core i3-2120T the 68.1% better value option.
| Feature | Core i3-2120T | Athlon 64 X2 5400+ |
|---|---|---|
| MSRP | $127-74% | $485 |
| Avg Price (30d) | $38-51% | $78 |
| Performance per Dollar | 41.3+103% | 20.3 |
| Release Date | 2011 | 2006 |
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