Performance Specifications # of Cores 6 # of Threads 6 Processor Base Frequency 2.80 GHz Max Turbo Frequency 4.00 GHz Cache 9 MB Intel® Smart Cache Bus Speed 8 GT/s Intel® Turbo Boost Technology 2.0 Frequency‡ 4.00 GHz TDP 65 W ADVERTISEMENT. Product Specifications Products Support Recent Searches. Intel Core i5 8400 review: this is THE gaming Coffee Lake Intel Core i5 8400 specs. BOC80684I58400 is a boxed CPU with 16GB of Intel Optane memory (Chinese version) Best-in-class gaming performance, when paired with a dedicated graphics card. Intel® Core™ Processor Family. Along with the release of the unlocked i5-8600K, this is the first time that six-core processors have featured in the i5 line-up. CPU performance. The i5-8400 is a competitively priced hex-core processor from Intel’s 8th generation of Core processors (Coffee Lake). Intel® Core™ i5 Processors. The Intel Core i5-8400 is a mid-range 6-core CPU. Average Bench 68.3%. The processor belongs to the Coffee Lake generation and was presented in September 2017. Often bests previous-generation Core i7-7700K flagship CPU on multi-core tests. Memory Specifications Max Memory Size (dependent on memory type) 128 GB Intel® Core™ i5+8400 Processor (9M Cache, up to 4.00 GHz) includes Intel® Optane™ Memory (16GB) Intel® Core™ i5 Processors. Sign In to access restricted content Intel® Processors. Intel Core i5 8400 / 2.8 GHz processor Specs & Prices - CNET More specs » More specs » Conclusion Average Bench 85.4%. The Core i5 8400 is still a six-core CPU, but without HyperThreading it remains stuck at six... Intel Core i5 8400 benchmarks.