It is an i5-14600K with only 4 E-Cores

Tom Henry

it is an i5 14600k with only 4 e cores

History repeats itself, and it no longer surprises almost anyone, but it must be said, because those times where with a graphite pencil you could unlock multipliers, with an ID change in BIOS you could touch the FSBs, and with a firmware flash you could unlimit a portion of the CPU died. What we are left with is another example of how a company optimizes its hardware so as not to lose money. And yes, the new and expected i5-14400 is cappedthe one that should reEsports Extrasin the mid-low range, will have a version that part of i5-14600which has 8 E-Core cores for the 4 of today’s protagonist.

There are several terms to discuss here, because today’s leak is really part of another one we saw weeks ago and where very useful information was provided. Specifically, we have to talk about QDF, Stepping and S-Spec to understand what is happening now and why it is a shame that all the old techniques no longer work.

The Intel Core i5-14400 will have a version that comes from the top chip


First of all, definition of the concepts discussed above:

  • QDFis a four-digit code provided by Intel that allows you to determine and distinguish between different engineering samples (ES) when CPUs are being sent to Beta testers around the world.
  • S-Spec, number or code that Intel provides for when the processor is already in the pre-production phase, just before presenting it, and which is already considered a validated sample, although it is being tested like the ES. It has five digits and identifies products with their characteristics.
  • Steppingis code that is created for the processor when there is an improvement in the manufacturing process or a feature has been corrected, or removed.

Intel-Core-14-processors,-QDF,-S-Spec,-Stepping,-cores,-frequencies,-TDP,-cache,-RAM memory

Why is this important you may be wondering? Well, because at the beginning of the month an important leaker leaked a table with all the models of the Core 14 series and it contained, among other data, the QDFs. Very good and? You may think…

Well, as we pointed out, the i5-14400 was the only processor repeated in said table and, therefore, it had two different QDFs, to be specific, Q37T (B0) and Q3XZ (C0). What a server has put in parentheses in both QDFs is the stepping, where this also differentiates them in one more detail that is easier to understand, their core configuration.

Intel would have enabled an i5-14400 with 6 P-Core and 8 E-Core, but it is capped


The variant Q3XZ C0 It is a variant that integrates 6 high-performance cores and 8 efficiency cores, but that will not reach the market like that. As can be seen in the screenshot of CPU-Z, where you can read its stepping perfectly, the C0 and B0 variants already included the same cores in total in their ES.

That is, the engineering samples integrate 6 P-Core and 4 E-Core, not 8 in the latter as expected. The problem is that physically it does integrate the 8 E-Core in that C0 variant. Comparison images of its predecessor, the i5-13400F, different QDF and Stepping confirm itsince their rear resistances show the greatest: their core configuration is not the same.

The same thing is going to happen with the i5-14400. Furthermore, it is perfectly clear what the procedure will be in the blue ones with the entire series of Core 14 processors. There are two specific matrices:

  • 8 P-Core + 16 E-Core (i9 and i7 Series)
  • 6 P-Core + 8 E-Core (i5 Series)

From the first, all the variants will come out with the same configuration and different frequencies and consumption, but also a configuration with the same cores, except that 4 E-Core are disabled, leaving 8 P-Core and 12 E-Core.

In the second case, it is the one we have discussed in this article, except that there is an i5-14400 with 8 E-Cores, which will not reach the market obviously, but at least thanks to the comparative image of CPU-Z maybe some ES of this i5-14400 that is not capped ends up being sold on eBay without knowing all this, and some lucky person has 6 P-Core and 8 E-Core on their PC by surprise.

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