Core i7-1255U vs Core i3-12300T
Core i7-1255U
Core i3-12300T
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.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-1255U
Performance Per Dollar Core i3-12300T
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-1255U | Core i3-12300T |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($164) |
| Longevity | ✨ Modern (Alder Lake-U (2022) / Intel 7 nm) | ✨ Modern (Alder Lake-S (2022) / Intel 7 nm) |
💎 Value Proposition
| Insight | Core i7-1255U | Core i3-12300T |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($164) |
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 i7-1255U and Core i3-12300T
Core i7-1255U
The Core i7-1255U is manufactured by Intel. It was released in 23 February 2022 (3 years ago). It is based on the Alder Lake-U (2022) architecture. It features 10 cores and 12 threads. Base frequency is 1.7 GHz, with boost up to 4.7 GHz. L3 cache: 12 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: FCBGA1744. Thermal design power (TDP): 15 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 13,128 points. Launch price was $149.
Core i3-12300T
The Core i3-12300T is manufactured by Intel. It was released in Janeiro 2022 (3 years ago). It is based on the Alder Lake-S (2022) architecture. It features 4 cores and 8 threads. Base frequency is 2.3 GHz, with boost up to 4.2 GHz. L3 cache: 12 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 35 Watt. Memory support: DDR5-4800, DDR4-3200. Passmark benchmark score: 13,162 points. Launch price was $149.
Processing Power
The Core i7-1255U packs 10 cores / 12 threads, while the Core i3-12300T offers 4 cores / 8 threads — the Core i7-1255U has 6 more cores. Boost clocks reach 4.7 GHz on the Core i7-1255U versus 4.2 GHz on the Core i3-12300T — a 11.2% clock advantage for the Core i7-1255U (base: 1.7 GHz vs 2.3 GHz). The Core i7-1255U uses the Alder Lake-U (2022) architecture (Intel 7 nm), while the Core i3-12300T uses Alder Lake-S (2022) (Intel 7 nm). In PassMark, the Core i7-1255U scores 13,128 against the Core i3-12300T's 13,162 — a 0.3% lead for the Core i3-12300T. Both processors carry 12 MB (total) of L3 cache.
| Feature | Core i7-1255U | Core i3-12300T |
|---|---|---|
| Cores / Threads | 10 / 12+150% | 4 / 8 |
| Boost Clock | 4.7 GHz+12% | 4.2 GHz |
| Base Clock | 1.7 GHz | 2.3 GHz+35% |
| L3 Cache | 12 MB (total) | 12 MB (total) |
| L2 Cache | 1.25 MB (per core) | 1.25 MB (per core) |
| Process | Intel 7 nm | Intel 7 nm |
| Architecture | Alder Lake-U (2022) | Alder Lake-S (2022) |
| PassMark | 13,128 | 13,162 |
| Geekbench 6 Single | 1,809 | — |
Memory & Platform
The Core i7-1255U uses the FCBGA1744 socket (PCIe 5.0), while the Core i3-12300T uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard.
| Feature | Core i7-1255U | Core i3-12300T |
|---|---|---|
| Socket | FCBGA1744 | LGA1700 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-4800 | — |
| Max RAM Capacity | 64 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 20 | — |
Advanced Features
Virtualization: VT-x, VT-d, EPT (Core i7-1255U) / not specified (Core i3-12300T). The Core i7-1255U includes integrated graphics (Iris Xe Graphics 96EU), while the Core i3-12300T requires a dedicated GPU. Primary use case: Core i7-1255U targets Mainstream Laptop. Direct competitor: Core i7-1255U rivals Ryzen 7 6800U.
| Feature | Core i7-1255U | Core i3-12300T |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | Iris Xe Graphics 96EU | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d, EPT | — |
| Target Use | Mainstream Laptop | — |
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