Core Ultra K prototype appears on CPU-Z, uses Intel 4 process node and hits 5 GHz, lacks AVX-512 support

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Core Ultra K prototype appears on CPU-Z, uses Intel 4 process node and hits 5 GHz, lacks AVX-512 support

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A mysterious Core Ultra K series engineering sample has made an appearance on CPU-Z.

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) a screenshot of the mysterious part, with many of the critical system specifications blanked out to hide its true identity. Among the interesting findings is that the chip is listed with a 7nm node, denoting it uses the Intel 4 process, and lacks support for AVX-512. 

The specs reveal that this particular engineering sample is made on the B0 revision of silicon and uses Intel’s next-generation LGA 1851 socket. Multiplier specs show that the maximum boost clock is somewhere in the 5GHz range, similar to Intel’s outgoing 13th and 14th Gen processors.

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Processor	Cores / Threads (P+E)	PBP (W)
Core i9-14900K	24 / 32 (8+16)	125
Core Ultra 9 285K	24 / 24 (8+16)	125
Core i7-14700K	20 / 28 (8+12)	125
Core Ultra 7 265K	20 / 20 (8 + 12)	125
Core i5-14600K	14 / 20 (6+8)	125
Core Ultra 5 245K	14 / 14 (6 + 8)	125

The model in question could be any of the three K SKU parts we know of right now. Previous leaks have unveiled three unlocked K-series variants for Arrow Lake-S: the flagship Core Ultra 9 285K, Core Ultra 7 265K, and Core Ultra 5 245 K. The Core Ultra 9 285K will purportedly have 8 Lion Cove P-cores and 16 Skymont E-cores, Core Ultra 7 285K will have 8 P-cores and 12 E-cores, and Core Ultra 5 245K will come with 6 P-cores and 8 E-cores.

One of the most interesting tidbits from the CPU-Z screenshot is the lack of hardware-accelerated AVX-512, as noted in the CPU-Z instructions entries. This little detail suggests that Intel is once again derailing AVX-512 for another generation, leaving AMD’s competing Ryzen 9000 series processors as the sole models to support the full-**** AVX-512 acceleration units.

This is not the first time Intel has removed AVX-512 functionality from its hybrid CPUs. Intel began pulling AVX-512 support, starting with Alder Lake, due to complications that stemmed from Intel’s decision to include AVX-512 support in its Golden Cove P-cores but remove it entirely from its Gracemount E-cores to save space.

The lack of AVX-512 support on the Gracemount cores forced Intel to completely remove AVX-512 support from Alder Lake CPUs altogether. However, the first batches of Alder Lake CPUs (and motherboard BIOS firmware) ironically allowed you to run AVX-512 instructions. The only caveat is that users had to disable the E-cores from the BIOS first for AVX-512 to work. Eventually, Intel culled this workaround entirely by first disabling AVX-512 enablement in firmware and then fusing it off physically on newer Alder Lake batches.

This trend continued to Raptor Lake/Raptor Lake Refresh, and now it appears to be making its way to Arrow Lake-S. This is pretty disappointing since AMD has enabled full 512-bit acceleration paths for AVX-512 with its Zen 5 and Zen 5c cores. The icing on the cake is that AMD can also run AVX-512 with minimal to no penalty to clock speed, which is a far cry from Intel’s chips, which have had to reduce clock speeds when running AVX-512 instructions to prevent the CPUs from overheating.

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#Core #Ultra #prototype #appears #CPUZ #Intel #process #node #hits #GHz #lacks #AVX512 #support

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