Intel Core i5-3450 socket: LGA 1155

What the Core i5-3450 is

Intel Core i5-3450 is a quad core Ivy Bridge desktop chip that Intel released in April 2012 as a mainstream tower part. It runs at 3.1 GHz base with Turbo Boost 2.0 to 3.5 GHz, with 6 MB Intel Smart Cache and 4 threads. The 22 nm process and 77 W rating match the standard desktop envelope, so stock coolers and mid range boards cover it without strain.

Graphics are Intel HD Graphics 2500 at 650 MHz to 1100 MHz. The block drives office displays and HD video, with Quick Sync to speed encodes. The chip pairs that block with a dual channel DDR3 controller at 1333 or 1600 MT/s, plus AVX and virtualization features for mixed office and lab use.

In practice the chip spends most threaded work near base clock and reserves 3.5 GHz for lightly threaded bursts. That split suited 2012 towers with a spinning drive, and it still feels direct today with an SSD and two memory modules. The How to find your CPU socket type guide helps verify the board before a used buy.

Socket and motherboard compatibility

The Core i5-3450 fits LGA 1155 in FCLGA1155 form. 7 series boards boot it with a shipping BIOS, and Intel lists H77, Z75 and Z77 among the compatible sets. Most 6 series H61, H67, P67 and Z68 boards accept it after a BIOS update with Ivy Bridge microcode, while B65, Q65 and Q67 remain Sandy Bridge only. Install the update before the swap where required.

Power at 77 W is the reference for LGA 1155 towers, so board choice turns on slots and ports rather than delivery. Z77 adds multiplier control for K chips and full display outputs, while B75 and H77 cover office builds. The CPU cooler compatibility by socket guide covers the shared cooler mount.

Memory, PCIe and cooling

Memory support is DDR3-1333 and 1600, two channels, up to 32 GB for 25.6 GB/s. Two matched DIMMs reach that peak, and the shared graphics block is the main beneficiary. ECC is not supported, so error checking stays with Xeon boards. DDR4 is outside this socket.

PCI Express is 16 lanes from the CPU at PCIe 3.0, arranged as 1x16, 2x8 or 1x8 plus 2x4. Office builds often skip a card entirely, since HD 2500 handles two displays. A mainstream 2012 card matches the quad cores for light creation or older games, without pushing the 77 W budget far.

Cooling uses the standard 77 W tower pattern with a 67.4 C case limit. The boxed cooler handles stock operation with decent airflow, and a budget tower lowers noise under long loads. Mounting is 75 × 75 mm push pin.

Upgrade paths

Within LGA 1155 the Core i5-3450 can step to higher clock Ivy quads on the same board, including faster i5 parts and the i7 line with Hyper-Threading where the BIOS lists them. Memory and storage carry over, and the cooler often carries over within 77 W. Intel Core i3-3220 shows a slower Ivy dual core on the same socket for scale.

A full platform move to LGA 1200 or newer needs a new board, DDR4 memory and a new mount. Keep the 3450 board for office or home server duty where four Ivy cores still meet the load.