
Xeon X5660 vs Core i3-8100

Xeon X5660

Core i3-8100
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 Xeon X5660 is positioned at rank 990 and the Core i3-8100 is on rank 410, so the Core i3-8100 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Xeon X5660
Performance Per Dollar Core i3-8100
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon X5660 | Core i3-8100 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($10) | ⚠️ Higher cost ($45) |
| Longevity | 🛑 Legacy (Westmere-EP (2010−2011) / 32 nm) | ✨ Modern (Coffee Lake (2017−2019) / 14 nm) |
💎 Value Proposition
| Insight | Xeon X5660 | Core i3-8100 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+343%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($10) | ⚠️ Higher cost ($45) |
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 Xeon X5660 and Core i3-8100

Xeon X5660
The Xeon X5660 is manufactured by Intel. It was released in 16 March 2010 (15 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2.8 GHz, with boost up to 3.2 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 95 Watt. Memory support: DDR3. Passmark benchmark score: 5,979 points. Launch price was $33.

Core i3-8100
The Core i3-8100 is manufactured by Intel. It was released in 5 October 2017 (8 years ago). It is based on the Coffee Lake (2017−2019) architecture. It features 4 cores and 4 threads. Base frequency is 3.6 GHz, with boost up to 3.6 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR4-2400. Passmark benchmark score: 6,073 points. Launch price was $117.
Processing Power
The Xeon X5660 packs 6 cores / 12 threads, while the Core i3-8100 offers 4 cores / 4 threads — the Xeon X5660 has 2 more cores. Boost clocks reach 3.2 GHz on the Xeon X5660 versus 3.6 GHz on the Core i3-8100 — a 11.8% clock advantage for the Core i3-8100 (base: 2.8 GHz vs 3.6 GHz). The Xeon X5660 uses the Westmere-EP (2010−2011) architecture (32 nm), while the Core i3-8100 uses Coffee Lake (2017−2019) (14 nm). In PassMark, the Xeon X5660 scores 5,979 against the Core i3-8100's 6,073 — a 1.6% lead for the Core i3-8100. L3 cache: 12 MB (total) on the Xeon X5660 vs 6 MB (total) on the Core i3-8100.
| Feature | Xeon X5660 | Core i3-8100 |
|---|---|---|
| Cores / Threads | 6 / 12+50% | 4 / 4 |
| Boost Clock | 3.2 GHz | 3.6 GHz+12% |
| Base Clock | 2.8 GHz | 3.6 GHz+29% |
| L3 Cache | 12 MB (total)+100% | 6 MB (total) |
| L2 Cache | 256 kB (per core) | 256K (per core) |
| Process | 32 nm | 14 nm-56% |
| Architecture | Westmere-EP (2010−2011) | Coffee Lake (2017−2019) |
| PassMark | 5,979 | 6,073+2% |
| Geekbench 6 Single | — | 1,200 |
| Geekbench 6 Multi | — | 3,600 |
Memory & Platform
The Xeon X5660 uses the LGA1366 socket (PCIe 2.0), while the Core i3-8100 uses LGA1151 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Xeon X5660 versus DDR4-2400 on the Core i3-8100 — the Core i3-8100 supports 28.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. Memory channels: 3 (Xeon X5660) vs 2 (Core i3-8100). Chipset compatibility: Intel X58,Intel 5520 (Xeon X5660) and B360,H310,H370,Z370,Z390 (Core i3-8100).
| Feature | Xeon X5660 | Core i3-8100 |
|---|---|---|
| Socket | LGA1366 | LGA1151 |
| PCIe Generation | PCIe 2.0 | PCIe 3.0+50% |
| Max RAM Speed | DDR3-1333 | DDR4-2400+33% |
| Max RAM Capacity | — | 64 GB |
| RAM Channels | 3+50% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | — | 16 |
Advanced Features
Neither processor supports overclocking. Virtualization support: VT-x, VT-d, EPT (Xeon X5660) vs VT-x, VT-d (Core i3-8100). The Core i3-8100 includes integrated graphics (Intel UHD Graphics 630), while the Xeon X5660 requires a dedicated GPU. Primary use case: Xeon X5660 targets Workstation, Core i3-8100 targets Budget Desktop. Direct competitor: Xeon X5660 rivals Core i7-980X.
| Feature | Xeon X5660 | Core i3-8100 |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Intel UHD Graphics 630 |
| Unlocked | No | No |
| AVX-512 | No | No |
| Virtualization | VT-x, VT-d, EPT | VT-x, VT-d |
| Target Use | Workstation | Budget Desktop |
Value Analysis
The Xeon X5660 launched at $1219 MSRP, while the Core i3-8100 debuted at $117. At current prices ($10 vs $45), the Xeon X5660 is $35 cheaper. In terms of value (PassMark points per dollar), the Xeon X5660 delivers 597.9 pts/$ vs 135.0 pts/$ for the Core i3-8100 — making the Xeon X5660 the 126.3% better value option.
| Feature | Xeon X5660 | Core i3-8100 |
|---|---|---|
| MSRP | $1219 | $117-90% |
| Avg Price (30d) | $10-78% | $45 |
| Performance per Dollar | 597.9+343% | 135.0 |
| Release Date | 2010 | 2017 |
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