Intel · Pentium D · 2005 · LGA775
The Intel Pentium Extreme Edition 840 is a desktop processor with 2 cores, released in 2005 at an MSRP of $999. 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. Thanks to Intel Hyper-Threading, each core can handle two instruction streams simultaneously, yielding a total of 4 threads for improved parallelism. It operates at a fixed 3.2 GHz. Intel manufactures the "Smithfield" silicon on a 90nm process node. The multiplier is unlocked, making overclocking straightforward. This processor supports DDR2 memory. With a TDP of 130W, the Pentium Extreme Edition 840 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.
The very first Extreme Edition dual-core CPU (April 2005) — and the world's first dual-core desktop chip from Intel. Smithfield puts two Prescott dies in one package. Hyper-Threading + two cores = 4 logical threads. Famous for extreme heat.
| Brand | Intel |
|---|---|
| Family | Pentium D |
| Series | Pentium D |
| Architecture | Smithfield |
| Type | Desktop |
| Launch year | 2005 |
| Cores | 2 |
| Threads | 4 |
| Base clock | 3.2 GHz |
| Boost clock | 3.2 GHz |
| L1 cache | 16KB/core |
| L2 cache | 1MB/core |
| TDP | 130W |
| Socket | LGA775 |
| Process | 90nm |
| Memory type | DDR2 |
| Integrated graphics | None |
| Chipsets | Intel 975X, Intel 955X, Intel 945P |
| Launch MSRP | $999 |