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Intel Core Ultra 9 285k 'Arrow Lake' Discussion/News ("15th gen") on LGA-1851

Which part of E cores and P Cores are on a Ring bus = Mesh Bus am I missing?

At least I've bothered to link some diagrams and articles, as opposed to literally making stuff up


Either post evidence or give it a rest (Put Up or Shut Up as it were)

That the E cores are a monolithic mesh…
 
With plenty of Ecores available HT isn’t really needed and if Ecores keep improving at the rate they are then P cores may end up going too.

Then you suffer the latency’s of a mesh topology and require more memory channels.


What Jigger is referring to I believe here is that the E cores are clustered into micro-meshes of 4 which have a single connection to the ring bus, so scaling them up to replace P cores/hyper-threading doesn't really work - as then you get the worst of ring stop latency on top of the negatives of best case latency from the mesh side.

No idea why they've decided to make such a mess of discussing it though.
 
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I’m looking forward to the new Intel chips. Not had an Intel since 5930K:X99, really hope they put out a platform like that again, 40 gen5 PCIe off the CPU + quad channel RAM at Less crazy prices than the workstation stuff.
Skylake release quickly made Haswell E obsolete though - as Skylake's IPC was noticeably higher and clocked higher thanks to a better process. Think it was less than a year that Haswell-E had the spotlight.
 
Skylake release quickly made Haswell E obsolete though - as Skylake's IPC was noticeably higher and clocked higher thanks to a better process. Think it was less than a year that Haswell-E had the spotlight.
What’s your point, new stuff is better? X99 was a great platform, could even drop a 18 core Xeon in. I used it 7 days a week for > 7 years. P.S: Skylake sucked;)
 
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Which makes sense, except there doesn't seem to be any actual source (Intel or otherwise) that confirms that the E cores definitely are using a mesh (or ring or crossbar or indeed anything else :D)

I'm assuming most communication between them is via the shared L2 cache anyhow.

EDIT: Best I can find on that:

Meteor Lake’s E-Cores behave like the ones on Alder Lake. Coherency is handled at the ring bus. Core-to-core transfers within an E-Core cluster take longer than crossing cluster boundaries, possibly because that requires a full round trip on the ring. The low power E-Cores aren’t ring bus clients, and rely on Meteor Lake’s Scalable Fabric to handle coherency. They suffer far higher latency.


Which suggests the quad core clusters don't have an internal mesh topology.
 
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What’s your point, new stuff is better? X99 was a great platform, could even drop a 18 core Xeon in. I used it 7 days a week for > 7 years. P.S: Skylake sucked;)

My point was pretty obvious, X99 was quickly eclipsed for gamers and those using productivity workloads that were lightly threaded, as Skylake had better clocks and IPC. Pretty average/sub standard platform to be eclipsed so quickly after release IMO.
 
My point was pretty obvious, X99 was quickly eclipsed for gamers and those using productivity workloads that were lightly threaded, as Skylake had better clocks and IPC. Pretty average/sub standard platform to be eclipsed so quickly after release IMO.
The IPC change was like 2-4% (typical for Intel at that time). X99 was a great platform for users that do more than just game, and it was great for games too. Considering it was also priced not to far above the normal desktop stuff, it was a no brainer for me, 40 PCIe lanes, Quad Channel RAM (8 slots), lots of PCIe slots on the mb’s(that worked without disabling other stuff). Haswell E also overclocked well (4.2-4.6Ghz).
 
Are any of these CPUs released yet?

I am currently looking at an HP all in one system which comes with the Intel Ultra 5-125U

Under specifications it says

Processor - Intel Core Ultra 5
Processor Speed - Intel Core Ultra 5-125U (14 Cores, Up to 4.5GHz, 12M Cache, 18T)
 
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Are any of these CPUs released yet?

I am currently looking at an HP all in one system which comes with the Intel Ultra 5-125U

Under specifications it says

Processor - Intel Core Ultra 5
Processor Speed - Intel Core Ultra 5-125U (14 Cores, Up to 4.5GHz, 12M Cache, 18T)
125U is Meteor Lake
 
Another hype train is danger of derailing like the Zen5 train before it.

Current estimates are all over the place still though with ST anything from 3% to 20% although the strong possibility of clock regression might explain some of that as being IPC vs ST score.

As for MT, Skymont looks very good but dropping HT does not. Skymont cores aren't that small anymore so the 8P/32E rumour seems very unlikely IMO. In fact, even 8P/16E might be too big long term if the E cores get even bigger.

Worst rumours ATM as far as I'm concerned is that some of those ES samples are running at way over 200W at stock again.
 

 
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