According to AMD’s official specification parameters, it is also the Ryzen 7000U series processor, but the chips used are different: 8-core Ryzen 7 7840U, 6-core Ryzen 5 7640U code-named Phoenix1, with an area of 178 square millimeters and 6 cores. The Ryzen 5 7540U and the 4-core Ryzen 3 7440U, code-named Phoenix2, are only 137 square millimeters, which is a full 23% smaller.
There is a guess that the code-named Phoenix2 chip uses “big and small cores”. The former contains 2 Zen4s and 4 Zen4cs, and the latter is 2 Zen4s and 2 Zen4cs. The Zen4c core is mainly the third-level cache halved (16MB to 8MB ), also reduces the frequency.
Now, the exposure blogger “Golden Pig Upgrade Package” has released the real photos of Phoenix1 and Phoenix2. It can be seen that the latter is obviously smaller, but the package is the same FP7.
He also put forward a new point of view. The Phoenix1 chip has a maximum of 8 CPU cores and 12 GPU cores (Radeon 780M/760M), while the Phoenix2 chip has been simplified to a maximum of 6 CPU cores and 4 GPU cores (Radeon 740M). The contribution of shrinking mainly comes from the streamlined core display.
However, it is unclear whether the Phoenix2 chip also streamlines the AI engine unit.
Some people may ask: Is it worthwhile to tape out a chip for such two entry-level models?
The answer is obviously yes, after all, the complexity and difficulty will be much smaller if some cores are streamlined and then taped.
Ryzen 5 7540U and Ryzen 3 7440U have not yet been listed on the relevant equipment, but they should have been shipped to OEM manufacturers.
