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

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.

An efficient low-power chip for its time, but its low base clock and obsolete platform make it irrelevant for modern use.

Best for: The Core i5-3570T should only be considered if you are upgrading an older LGA 1155 system or building a very low-power home server from salvaged parts. Its 45W TDP and quad-core design make it decent for a DIY NAS or a pfSense router. However, its low base clock of 2.3 GHz makes it sluggish for modern web browsing and everyday multitasking. It is completely unsuited for gaming without a dedicated GPU, and even then, the low clock speeds will bottleneck older titles. Do not spend much money on this processor. If you are building a new system, even the lowest-tier modern Intel N100 or Athlon 3000G will offer vastly superior single-thread performance, efficiency, and modern I/O features.