Intel’s processors embody {hardware} to assist with monitoring their very own efficiency. Unsurprisingly, these are referred to as “Efficiency Monitoring Items” (PMU). The corporate releases JSON information that map the uncooked knowledge supplied by the PMUs to human-readable occasions and has already launched one for its 14th-generation Meteor Lake processors. From studying these, the Coelacanth has found out that Meteor Lake’s Crestmont cores might be a big change from the Gracemont cores utilized in Alder Lake and Raptor Lake.
Let’s step again for a second. The codename for Intel’s extant Core processors is “Alder Lake”, or “ADL” in brief type. Its upcoming Thirteenth-gen processors are referred to as “Raptor Lake” (RPL), and their chiplet-based successors would be the 14th-gen “Meteor Lake” (MTL) processors.
Over within the Perfmon listing at Intel’s 01 open supply web site, we will discover an “MTL” folder, and in that folder you’ll find a few JSON information which might be named meteorlake_crestmont_core and meteorlake_redwoodcove_core. The names of the cores aren’t something new; we first heard about Redwood Cove again in 2020.
Chart: Coelacanth’s Dream
Alder Lake incremented each numbers by one with its revised Golden Cove and Gracemont cores, the previous being the P-core structure and the latter being the E-core structure. In line with the perfmon JSON information, neither Raptor Lake nor Meteor Lake will increment the Native Mannequin ID for his or her P-cores. That may be interpreted as which means that each Raptor Cove and Redwood Cove are minor revisions on ADL’s Golden Cove.
In the meantime, Raptor Lake is thought to hold ahead the Gracemont design from Alder Lake, however it looks as if the Crestmont E-cores in Meteor Lake might be a big revision. That is based mostly on the truth that the primary increment of both Native Mannequin ID since Alder Lake might be for Crestmont. Sadly, this data would not really inform us something about what might be modified in Crestmont.
Arguably the extra fascinating information is that Redwood Cove might be one other revision of the Golden Cove structure. Approach again in Might, leaker Raichu (@OneRaichu on Twitter) famous that Redwood Cove will deal with effectivity enhancements at each stage, together with the core structure. That is probably as a result of the Intel 4 course of that Meteor Lake might be utilizing cannot attain the identical insane clock charges that Intel’s mature “Intel 7” course of can. Extra not too long ago, fellow leakers @harukaze5719 and @9550pro had the identical dialogue after the Coelacanth’s put up above.
Consequently, it looks as if Meteor Lake might not provide a lot enchancment in efficiency over Raptor Lake, at the very least for high-powered desktop processors. Nevertheless, the performance-per-clock needs to be improved significantly, which implies power-limited platforms like laptops ought to see large good points.
For his half, Raichu says that Golden Cove in its present type has important inefficiencies with regard to instruction execution, and that it’s not performing to its full potential. Maybe adjustments with Raptor Cove and Redwood Cove will unlock the complete pace of the core structure.
