Friday, June 24th 2022
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
E Cores are BS for desktop PCs imo.
Let's use math. 12900k uses 303w for just 8 p cores. Let's assume, that it ll scale perfectly so 12p cores ll use 450w :D that's insane.
With E cores enabled it uses 297w and performance is 37% faster in cinabench and 2.5% slower in gaming :D
So with + 8 E cores u get other 40% for 50w maybe ? For 4p cores u ll get 50% for 150w
Note: only if it scales perfectly. With +150w heat there is no way, that it ll boost as fast as 8p :)
So that's why Intel goes for more E cores. They have no room for more p cores in power budget
Intel Core i9-12900K Alder Lake Tested at Power Limits between 50 W and 241 W - Application Performance | TechPowerUp
so for 51W extra watts you gain 2.1% performance :/...
Drop the power curve, add 2 P cores and more cache, and you would be in the same power envelope with much better performance.
And I also believe the 12900k was pushed too far just to claim victory against 5950x. But it's otherwise a pretty efficient beast.
So basicly Intel could have 250w 20p CPU with 187% performance for productivity
Im still very interested in rocket lake even with 8 cores since that's more than enough, and the e cores actually work amazingly well for me and my workloads with a 12600k. I will probably be capping power though with a low volt OC.
With the rising costs of electricity, AMD are the clear winner here. I wont be looking at buying a CPU or GPU that favour power over efficiency to get the job done.