Intel Core 2 Quad Q8400S
Category: CPU / Processor
Manufacturer: Intel
Cores: 4C / 8T
Clock: 2.66 - 2.66 GHz
Socket: LGA775
TDP: 65W

Intel Core 2 Quad Q8400S
Cores
4C / 8T
Clock
2.66 - 2.66 GHz
Socket
LGA775
TDP
65W
No price data available
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Overview
The Intel Core 2 Quad Q8400S packs 4 cores and 8 threads. It drops into the LGA775 socket with a 65W TDP — about 16.3W per core. Clocks run from 2.66GHz base to 2.66GHz boost. Match the socket to your motherboard first; cooler TDP rating second.
Drop it into the PlanMyPC builder to check compatibility with the rest of your parts and compare current processor prices across retailers. Support and warranty service run through Intel, with terms that vary by region. Every published spec is tabulated below, and compatibility against your current part list is checked automatically. If this processor is not quite the right fit, the category page lists close alternatives at similar prices for a quick side-by-side comparison.
| Specification | Value |
|---|---|
| TDP | 65 W |
| CPU Cores | 4 |
| Socket | LGA775 |
| Threads | 8 |
| Base Clock | 2.66 GHz |
| Boost Clock | 2.66 GHz |
| Microarchitecture | Yorkfield |
| Integrated Graphics | None |





