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Intel 15th Gen Core i7-15700K Spotted: 20 Cores, AVX-512, and Hyper-Threading Missing

Intel plans to integrate AVX512 support into its P and E-cores as part of the AVX10 instruction set

Following last week’s leak of Intel’s Arrow Lake-S flagship, a second 15th Gen sample has been spotted, courtesy of InstLatX64. We’re looking at a 20-core CPU, most likely featuring 8P and 12 E-cores. If the details are correct, it’s the successor to the Core i7-14700K, the only notable chip from Intel’s 14th Gen Raptor Lake Refresh. Unsurprisingly, this processor lacks hyper-threading, AVX512, or an alternative to either.

The alleged Core i7-15700K has 20 cores/20 threads with a base clock of 2.3GHz (although this doesn’t mean much). The supposed Core i9-15900K consisted of 24 cores (8P +16E) with a base clock of 3GHz. The lack of AVX512 is disappointing, as AMD already supports the 512-bit instructions on its Ryzen 7000 processors. It is implemented on Zen 4 using a slightly different approach from Intel’s.

AMD uses its 256-bit (256-bit FP units) data path and twice as many registers to execute “most 512-bit ops” over two consecutive cycles. This is more power efficient than 512-bit wide units and doesn’t require substantial architectural changes. Intel plans to integrate AVX512 support into its P and E-cores as part of the AVX10 instruction set. Unfortunately, it doesn’t look like Arrow Lake will get AVX10 or 512-bit instructions.

Here’s everything we know about the 15th Gen Arrow Lake family.

Areej Syed

Processors, PC gaming, and the past. I have been writing about computer hardware for over seven years with more than 5000 published articles. Started off during engineering college and haven't stopped since. Mass Effect, Dragon Age, Divinity, Torment, Baldur's Gate and so much more... Contact: areejs12@hardwaretimes.com.
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