Intel · Core i7 · 2009 · LGA1156
The Intel Core i7-870 is a desktop processor with 4 cores, released in 2009 at an MSRP of $562. It is part of the Core i7 lineup, using the 1st Gen platform, and fits the LGA1156 socket. Internally, it is built on the "Nehalem" architecture. Thanks to Intel Hyper-Threading, each core can handle two instruction streams simultaneously, yielding a total of 8 threads for improved parallelism. The Core i7-870 has a base clock of 2.93 GHz and can boost up to 3.6 GHz depending on workload and thermal headroom. Intel manufactures the "Nehalem" silicon on a 45nm process node. Its multiplier is locked, so any overclocking has to come from raising the base clock rather than the multiplier. This processor supports DDR3 memory. With a TDP of 95W, the Core i7-870 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 32KB/core of L1, 256KB/core of L2, and 8MB of L3 cache.
Lynnfield flagship on the more affordable LGA1156 platform. Had exceptional Turbo Boost headroom — base 2.93 GHz could boost to 3.6 GHz on a single core.
| Brand | Intel |
|---|---|
| Family | Core i7 |
| Series | 1st Gen |
| Architecture | Nehalem |
| Type | Desktop |
| Launch year | 2009 |
| Cores | 4 |
| Threads | 8 |
| Base clock | 2.93 GHz |
| Boost clock | 3.6 GHz |
| L1 cache | 32KB/core |
| L2 cache | 256KB/core |
| L3 cache | 8MB |
| TDP | 95W |
| Socket | LGA1156 |
| Process | 45nm |
| Memory type | DDR3 |
| Integrated graphics | None |
| Chipsets | H57, H55, P55, Q57 |
| Launch MSRP | $562 |
| Part number | BX80605I7870 |
| OEM / tray part number | BV80605001905AI |