CPU
GPU
Core i7-6660U
Core i3-6100T
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 i7-6660U is positioned at rank 612 and the Core i3-6100T is on rank 581, so the Core i3-6100T offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-6660U
Performance Per Dollar Core i3-6100T
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-6660U | Core i3-6100T |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($20) |
| Longevity | 🛑 Legacy (Skylake (2015−2016) / 14 nm) | 🛑 Legacy (Skylake (2015−2016) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-6660U | Core i3-6100T |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($20) |
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 i7-6660U and Core i3-6100T
Core i7-6660U
The Core i7-6660U is manufactured by Intel. It was released in 20 March 2016 (9 years ago). It is based on the Skylake (2015−2016) architecture. It features 2 cores and 4 threads. Base frequency is 2.4 GHz, with boost up to 3.4 GHz. L3 cache: 4 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: BGA1356. Thermal design power (TDP): 15 Watt. Memory support: DDR4-2133, LPDDR3-1866, DDR3L-1600. Passmark benchmark score: 3,628 points. Launch price was $415.
Core i3-6100T
The Core i3-6100T is manufactured by Intel. It was released in 1 September 2015 (10 years ago). It is based on the Skylake (2015−2016) architecture. It features 2 cores and 4 threads. Base frequency is 3.2 GHz, with boost up to 3.2 GHz. L3 cache: 3 MB. L2 cache: 512 kB. Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 35 Watt. Memory support: DDR4-1866/2133, DDR3L-1333/1600. Passmark benchmark score: 3,641 points. Launch price was $117.
Processing Power
Both the Core i7-6660U and Core i3-6100T share an identical 2-core/4-thread configuration. Boost clocks reach 3.4 GHz on the Core i7-6660U versus 3.2 GHz on the Core i3-6100T — a 6.1% clock advantage for the Core i7-6660U (base: 2.4 GHz vs 3.2 GHz). Both are built on the Skylake (2015−2016) architecture using a 14 nm process. In PassMark, the Core i7-6660U scores 3,628 against the Core i3-6100T's 3,641 — a 0.4% lead for the Core i3-6100T. L3 cache: 4 MB on the Core i7-6660U vs 3 MB on the Core i3-6100T.
| Feature | Core i7-6660U | Core i3-6100T |
|---|---|---|
| Cores / Threads | 2 / 4 | 2 / 4 |
| Boost Clock | 3.4 GHz+6% | 3.2 GHz |
| Base Clock | 2.4 GHz | 3.2 GHz+33% |
| L3 Cache | 4 MB+33% | 3 MB |
| L2 Cache | 512 kB | 512 kB |
| Process | 14 nm | 14 nm |
| Architecture | Skylake (2015−2016) | Skylake (2015−2016) |
| PassMark | 3,628 | 3,641 |
| Cinebench R23 Multi | — | 2,500 |
| Geekbench 6 Single | — | 1,041 |
| Geekbench 6 Multi | — | 2,071 |
Memory & Platform
The Core i7-6660U uses the BGA1356 socket (PCIe 3.0), while the Core i3-6100T uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i7-6660U | Core i3-6100T |
|---|---|---|
| Socket | BGA1356 | LGA1151 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | — | DDR4-2133 |
| Max RAM Capacity | — | 64 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Core i7-6660U) / VT-x, VT-d (Core i3-6100T). The Core i3-6100T includes integrated graphics (HD Graphics 530), while the Core i7-6660U requires a dedicated GPU. Primary use case: Core i3-6100T targets Budget.
| Feature | Core i7-6660U | Core i3-6100T |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | HD Graphics 530 |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Budget |
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