Intel Core i5-3570 vs Intel Core i5-3570S

A legendary processor for its time that still handles basic tasks, but is completely outclassed by modern budget CPUs.

Best for: The Core i5-3570 is obsolete and should not be considered for a new build. However, if you are repairing or upgrading an older LGA 1155 system, it is an excellent, cheap drop-in part. It still handles basic web browsing and document editing adequately, provided you use lightweight software and an SSD. For retro gaming, when paired with a dedicated GPU from the same era (like a GTX 660 or 750 Ti), it can run games from the early 2010s flawlessly. It is also a solid choice for a basic home server. Do not spend much money on this chip, as modern budget processors offer vastly superior performance-per-watt. If you already have the motherboard, it's a great salvage build; otherwise, look elsewhere.

A well-balanced 65W quad-core that was a staple in pre-built office PCs, but is too slow for modern demanding workloads.

Best for: For modern users, the Core i5-3570S holds very little value outside of maintaining an older system. If you have a functioning LGA 1155 motherboard and need a cheap processor to keep an office machine or media center running, this chip is adequate. Its quad-core design still handles basic web browsing and document editing reasonably well. However, it struggles significantly with modern gaming and heavy multitasking. It should never be purchased for a new build, as its platform lacks support for modern I/O like NVMe booting (on most older boards), USB 3.1 Gen 2, and DDR4 memory. If you find one used for a few dollars, it might be worth it to revive an old PC. Otherwise, save your money for a modern entry-level processor.