There have been a few Intel processors with "L4 cache" (meant to be used as iGPU memory, and only if unused work as L4 cache) as listed here [0]. Broadwell was

There have been a few Intel processors with "L4 cache" (meant to be used as iGPU memory, and only if unused work as L4 cache) as listed here [0]. Broadwell was the only generation to have desktop processors with the eDRAM chip sitting by the side of the processor. Now it's only on a few higher end ultrabook processors [1, 2] -- look for those listed with L4 cache. [0] https://en.wikichip.org/wiki/intel/microarchitectures/broadwell_(client)#Memory_Hierarchy https://en.wikichip.org/wiki/intel/microarchitectures/broadw... [1] https://en.wikipedia.org/wiki/Skylake_(microarchitecture)#Mobile_processors https://en.wikipedia.org/wiki/Skylake_(microarchitecture)#Mo... [2] https://en.wikipedia.org/wiki/Kaby_Lake#Mobile_processors https://en.wikipedia.org/wiki/Kaby_Lake#Mobile_processors