superpatodonaldo Posted June 16, 2023 Share Posted June 16, 2023 Why 4P cpus? Just 4core enabled? Quote Link to comment Share on other sites More sharing options...
yosarianilives Posted June 16, 2023 Share Posted June 16, 2023 7 hours ago, superpatodonaldo said: Why 4P cpus? Just 4core enabled? One core per module enabled Quote Link to comment Share on other sites More sharing options...
damric Posted July 24, 2023 Share Posted July 24, 2023 @Leeghoofd can you clarify? Can we just disable cores to meet the 4 core requirement? Quote Link to comment Share on other sites More sharing options...
Mr.Scott Posted July 25, 2023 Share Posted July 25, 2023 2 hours ago, damric said: @Leeghoofd can you clarify? Can we just disable cores to meet the 4 core requirement? Never Quote Link to comment Share on other sites More sharing options...
mickulty Posted July 25, 2023 Share Posted July 25, 2023 9 hours ago, damric said: @Leeghoofd can you clarify? Can we just disable cores to meet the 4 core requirement? The "4P" option represents one core per compute unit mode - certainly available on gigabyte boards, supposedly a certain bios on CHV, not sure about asrock and msi. It was added because it's vaguely analagous to p-core modes on ADL (rankings like 12900K (8P)). The difference compared to just disabling cores is that each core gets a full 3-wide decoder 100% of the time, a full 256-bit FPU 100% of the time, and an exlusive 2MB of L2 cache. You can look at ths as the "P-core" and the extra integer units that normally share these resources as the "E-core". Another way to think of it is disabling CMT. I found a screenshot of the settings on a 990FX-UD7 but even cheapo gigabyte AM3+ boards like the 78LMT-USB3 have the setting. Also attached are block diagrams (By Shigeru23 - Made by uploader, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=17130259) annotated to show the difference. Realistically a 78LMT-USB3 even being a fairly bunnyextraction board but with true 1 core per cu mode will still beat a crosshair with disabled cores. Imagine 12900K with 4P and 4E-cores vs 8P... Quote Link to comment Share on other sites More sharing options...
damric Posted July 25, 2023 Share Posted July 25, 2023 I'm talking about the AM4 section but I guess that also applies. Quote Link to comment Share on other sites More sharing options...
Crew Leeghoofd Posted July 25, 2023 Crew Share Posted July 25, 2023 Correct, no core disabling to simulate another CPU allowed 1 Quote Link to comment Share on other sites More sharing options...
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