4790k vs r5 3600?
4790k vs r5 3600?
It seems like you mentioned a configuration of 4 cores per CCX, resulting in 8 cores total. Appreciate the explanation.
The 3600 includes four cores per CCX, though one is inactive in each. Zen 2 processors offer either eight or sixteen cores, depending on the number of disabled units.
The chiplet design influences how components are built. AMD produces many similar CCDs and assembles them uniquely to form different modules. Every Epyc, Threadripper, and standard desktop Ryzen uses the same die for CPU cores. Variations come from the quantity of dies assigned and core activation per die. The exception applies to laptop chips and desktop APUs, which use traditional monolithic dies. Some budget models, like certain Athlon variants, employ smaller dies with fewer cores. Older Zen and Zen+ processors originally featured just four cores per die. From what I understand, all Ryzen Zen 2-based parts—including APUs—begin with a minimum of eight cores across two four-core CCXs on the same die.
They now produce both 6-core and 8-core CCDs and combine them for models like the 9900X and 9950X. I thought they used the same setup before, expecting a single CCD such as in the 5600, 7600, or 9600 series. Searching online reveals a dual CCX 5600 with 12 cores, though one of them is laser-cut and not working.
Zen 3, 4, and 5 operated on 8 cores per CCX while keeping 8 cores per CCD, making these terms nearly interchangeable. Zen 2 also supports 8 cores per CCD, though each 8-core die is divided into two 4-core CCXs—a peculiar arrangement for the 5600X. Der8auer encountered a dual-CCD 7600X during a refurbishment and noticed this issue. It might suggest a problem with CPU binning or packaging. AMD initially believed both CCDs functioned correctly, aiming to develop a Ryzen 9 variant, but it failed testing and was discarded, later down-binned into a 5600X. The author believes the BIOS and Ryzen Master settings expect a single CCX/CCD for the 5600X, and a recent BIOS or Ryzen Master update could have resolved this over the past five years.
I believe I should exercise more precision in my wording going forward to avoid any confusion. Previously, we discussed Zen 2 and the specific 3600 model. To confirm our understanding: CCX represents a logical cluster of cores that utilize L3 cache together. CCD is a single chip that includes one or more CCX units. Zen 2 chiplets typically contain two CCX within a single CCD. Each CCX remains logically distinct, regardless of their physical placement on the same silicon. As we move from Zen 3 through Zen 5, each CCD now houses one CCX. Most Zen 2 CPUs with eight or fewer cores are essentially built from a single CCD. The 5600 model featuring two CCDs might actually be a defective unit with two faulty CCX components, which could still function as a complete CCD.
3600 performed better than expected with an undervolt setting. Adjusting the voltage helped it run cooler and used less power, cutting consumption from 65W to around 130W while boosting responsiveness by about 5-10 FPS. Using 3600 MHz RAM and configuring the frequency to 1800 would further enhance performance, especially for gaming.
The CCX adds another level of complexity for users who find the L3 cache divided into separate CCX units. Each CCX functions like a distinct module that can be assembled with other CCXs to form complete CCDs and full CPU systems. With one CCX per CCD, the distinction between layers becomes clearer, though it may still require some adjustment for newcomers.