An Intel Lunar Lake prototype pops up in the SiSoft Sandra database, throws down an early gauntlet, and leaves in a cloud of mystery

05.10.2023 - 12:27 / pcgamer.com

It won't actually hit the markets for another couple of years, but Intel's forthcoming Lunar Lake CPU architecture has made an early appearance in the SiSoft Sandra database. The entry has all kinds of confusing information and while it only covers the numbers from just one benchmark, they're actually quite promising.

Intel's roadmaps for its CPU architectures can get rather confusing at times, especially since the various designs don't get used in every segment. For example, we're currently on Raptor Lake and will be for the next generation of Core processors. After that, it'll be Meteor Lake, which is bringing in a whole new way of putting chips together for Intel.

However, Meteor Lake won't really be used for desktop CPUs, in that you won't be able to go out and buy one to upgrade your PC. That's because this design is mostly aimed towards laptops, although apparently, it will make its way into some pre-built all-in-one systems. The desktop replacement for Raptor Lake will be Arrow Lake. Though there's also a Raptor Lake refresh coming in between. See, we told you it was confusing. Then, in turn, Meteor Lake will be replaced by Lunar Lake. 

All of which is some way off but the latter has reared its head on the database for SiSoft Sandra, as noticed by Twitter user Olrak29 (via Videocardz). First things first: At this stage in chip development, this will definitely be an engineering sample, so the reported clock speeds and other details are unlikely to be the final specs or even 100% correct.

The database entry states that it's a 20-core CPU but that bit is certainly wrong, as other details in the listing clearly show that it is an eight thread chip. There's also the fact that the L2 cache is reported as 4x 2.5MB + 4MB which is how Intel does things with its P-cores and E-cores. The former get a L2 slice all to themselves, whereas the latter share a single block across four cores.

That means this particular Lunar Lake sample is a 4P + 4E configuration, which makes sense given that it's also listed as having a TDP of 17W. There isn't really a Raptor Lake equivalent, as the current low-power options are either 1P + 4E or 2P + 8E.

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More P-cores will be a good thing to have, though, so that's a positive change. However, the eight threads bit does mean that the P-cores don't have Hyper-Threading enabled, which seems to be a step backward from how things currently are in Intel's low-power CPUs.

Though there are reported changes afoot for Intel's Hyper-Threading in its coming architecture's so it's