Friday, June 24th 2022
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Intel "Raptor Lake" Core i9 Sample Powers Up, 8P+16E Configuration Confirmed
An engineering sample of a 13th Intel Core "Raptor Lake" Core i9 processor hit the web, courtesy of wxnod on Twitter, which confirms its 8P+16E core-configuration in a CPU-Z screenshot. Based on the same LGA1700 package as "Alder Lake," and backwards compatible with Intel 600-series chipset motherboards, besides new 700-series ones, "Raptor Lake" combines eight "Raptor Cove" performance cores (P-cores), with sixteen "Gracemont" efficiency cores (E-cores).
"Raptor Cove" features a generational IPC increase over the "Golden Cove" P-cores powering "Alder Lake," while the "Gracemont" E-cores, although identical to those on "Alder Lake," are expected to benefit from the doubling in L2 cache per cluster, from 2 MB to 4 MB. The ISA as detected by CPU-Z appears to be identical to that of "Alder Lake." The processor is a monolithic silicon chip built on the Intel 7 (10 nm Enhanced SuperFin) silicon fabrication process.
Sources:
wxnod (Twitter), VideoCardz
"Raptor Cove" features a generational IPC increase over the "Golden Cove" P-cores powering "Alder Lake," while the "Gracemont" E-cores, although identical to those on "Alder Lake," are expected to benefit from the doubling in L2 cache per cluster, from 2 MB to 4 MB. The ISA as detected by CPU-Z appears to be identical to that of "Alder Lake." The processor is a monolithic silicon chip built on the Intel 7 (10 nm Enhanced SuperFin) silicon fabrication process.
104 Comments on Intel "Raptor Lake" Core i9 Sample Powers Up, 8P+16E Configuration Confirmed
Regardless, AMD's win wasn't on performance (performance was in the same ballpark), it was on cost and perf/W.
AMD even with Zen 3 and now Zen 4 still have 8 cores maximum per CCD. And the latency to cross CCDs is far higher (3-4X than inter core communication within a CCD or in Intel's case the ring. That could cause problems or slight pause in games if they take more than 6 cores on 5900X or 7900X which just have 2 6 core chiplets. In that case games are better off with a 5800X as they have 8 cores in one CCD or Intel 12th gen 8 p cores with e-cores off.
www.anandtech.com/show/16214/amd-zen-3-ryzen-deep-dive-review-5950x-5900x-5800x-and-5700x-tested/5
Zen 5 is supposed to have 16 core CCDs so that will be exciting as it will be first true more than 8 core CPU with modern IPC.
For now though games actually are better off on one CCD/ring chiplets as I found out latency to cross CCDs or a ring is much much higher than I thought. In theory that i bad for something like game threads that need to always communicate with each other as fast as possible.
So Zen 5 looks exciting.
Best thing now as I just found out would be for a 10 core Intel ring bus Golden Cove or Raptor Cove CPU, or an 8 core with lots more cache and no e-cores. Or buy a 12700K and shut off e-cores and you get the best gaming CPU tied with 5800X3D, but far better in other things as well with e-cores off of course.
E-cores are just not good right now as hybrid arch causes more trouble than its worth and it drags the ring clock down a lot which hampers performance.
Though games fortunately do not really even need more than 6 cores 12 threads with excellent IPC, but 8 cores 16 threads is definitely more comfortable for headroom. Would like a couple more cores for overprovision, but unnecessary at least now and unfortunately such product with more than 8 cores in a single CCD/ring bus does not exist yet and will not till Zen 5 or maybe Meteor Lake as Intel seems to be changing the design on it where it appeared it was going to be still