Intel · Pentium D · 2005 · LGA775
The Intel Pentium D 820 is a desktop processor with 2 cores, released in 2005 at an MSRP of $241. It is part of the Pentium D lineup, using the Pentium D platform, and fits the LGA775 socket. Internally, it is built on the "Smithfield" architecture. It operates at a fixed 2.8 GHz. Intel manufactures the "Smithfield" silicon on a 90nm process node. Its multiplier is locked, so any overclocking has to come from raising the base clock rather than the multiplier. This processor supports DDR2 memory. With a TDP of 95W, the Pentium D 820 sits in a typical power envelope for a modern desktop CPU. This processor has no integrated graphics — a discrete GPU is required. The cache hierarchy consists of 16KB/core of L1 and 1MB/core of L2 cache. There is no L3 cache on this processor.
Smithfield, 1MB L2 per core. No HT — distinguishing feature vs the Extreme Edition 840 at the same architecture.
| Brand | Intel |
|---|---|
| Family | Pentium D |
| Series | Pentium D |
| Architecture | Smithfield |
| Type | Desktop |
| Launch year | 2005 |
| Cores | 2 |
| Threads | 2 |
| Base clock | 2.8 GHz |
| Boost clock | 2.8 GHz |
| L1 cache | 16KB/core |
| L2 cache | 1MB/core |
| TDP | 95W |
| Socket | LGA775 |
| Process | 90nm |
| Memory type | DDR2 |
| Integrated graphics | None |
| Chipsets | P965, P945, G965, 945P, 955X |
| Launch MSRP | $241 |