Intel Core i5-3450S socket: LGA 1155

What the Core i5-3450S is

Intel Core i5-3450S is a quad core Ivy Bridge desktop processor that Intel released in April 2012 with the first Ivy Bridge wave. It runs at 2.8 GHz base with Turbo Boost 2.0 to 3.5 GHz, and it carries 6 MB Intel Smart Cache. Four cores give 4 threads, on a 22 nm process at 65 W. The S tune trims base clock against the 77 W Core i5-3450 while keeping a high single core turbo.

Graphics are Intel HD Graphics 2500 at 650 MHz to 1100 MHz, with Quick Sync and three display support. The block serves office monitors and video, while heavier 3D work wants a discrete card. The memory controller takes DDR3 at 1333 or 1600 MT/s, and the chip includes AVX and virtualization support.

The wide turbo range defines daily behavior. Single thread bursts reach 3.5 GHz, while all core loads settle lower inside 65 W. Office towers pair it with B75 or H77, 8 GB of RAM and an SSD for quiet response. The How to find your CPU socket type guide helps confirm the board before a swap.

Socket and motherboard compatibility

The Core i5-3450S fits LGA 1155 in FCLGA1155 form. 7 series boards that launched with Ivy Bridge boot it directly, including B75, H77, Z77, Z75, Q75 and Q77. Many 6 series boards accept it after a BIOS update with Ivy Bridge microcode, apart from B65, Q65 and Q67. Apply the update before fitting the chip, using a Sandy Bridge part where the board requires it.

At 65 W the chip fits slim and standard boards alike, which made S parts popular with office makers. Board choice turns on display outputs and expansion rather than power. The Socket vs chipset: what decides whether a CPU works guide walks through the chipset split, and Intel Core i5-3450 shows the 77 W twin for comparison.

Memory, PCIe and cooling

Memory support is DDR3-1333 and 1600, two channels, up to 32 GB for 25.6 GB/s. Matched pairs matter for the shared graphics block, and they also steady turbo by feeding all four cores. ECC is not supported on this SKU, and DDR4 needs a newer socket.

PCI Express is 16 lanes from the CPU at PCIe 3.0, set by the board to 1x16, 2x8 or 1x8 plus 2x4. Most 3450S builds stay on HD 2500 for office displays, since that block already handles two monitors. A low profile 2012 card fits where a third display or light 3D work is needed.

Cooling tracks the 65 W rating with a 69.1 C case limit. The stock cooler is enough for office bursts, while a small tower smooths long all core jobs. The 75 × 75 mm mount matches other LGA 1155 through LGA 1200 coolers with the right pins.

Upgrade paths

On LGA 1155 the Core i5-3450S can move to higher clock Ivy quads on the same board, either within 65 W or up to 77 W with a cooler check. Examples include faster S parts or standard parts where the BIOS lists them. RAM, storage and often the cooler carry over, so the swap is quick.

Leaving the socket for DDR4 platforms such as LGA 1200 needs a new board, new memory and a new mount. Keep the 3450S system for office fleets where its efficiency still matters, after confirming the BIOS level.