AMD Renoir core can be said to be a great success, using the 7nm process, Zen 2 CPU architecture, Vega GPU architecture of its notebook field, The Ryzen 4000U thin, Ryzen 4000H game book is favored, and will soon be in the desktop market, that is, The Ryzen 4000G series.
Now, Fritzchens Fritz, an ultra-large-scale integrated circuit engineer, has released a photo of the core of Renoir’s core, while Twitter user @Nemez has detailed the number of each functional module.
On the left is the CPU part of the two CCX modules, each inside has four CPU core, 4MB three-level cache, a total of eight cores, 8MB three-level cache, compared to the previous generation doubled, but compared to the Ryzen CPU, the three-level cache is only a quarter, so the overall size of CCX is much smaller.
On the right is the GPU part of the eight CU cells, a total of 512 stream processors, there are 8 ROP units, 4 texture units, compared to the previous architecture, there is no major change, the size of three units, 192 stream processors, but the frequency speed increased by more than 40%, so the actual performance is better.
At the same time, you can also see the display engine, display physical layer, multimedia engine next to the GPU core, this part of the actual reference to the design of the Navi architecture, some even more advanced than Navi, so the audio and video capabilities are excellent.
Other sections include the 128-bit DDR4/LPDDR4/LPDDR4X memory controller, I/O Control Center, five sets of PCIe 3.0 x4 controllers, two sets of PCIe 3.0 x2 controllers (also configured as SATA/10GbE), which is a total of 24 PCIe 3.0 channels.
In the previous two generations of desktop Ryzen APU, if the pair of discrete graphics card can only get half of the bandwidth of PCIe 3.0 x8, and the Ryzen 4000U/H series notebook, discrete graphics card is also only PCIe 3.0 x8, although also enough to use, but still considered a bloody state.
Now, the Ryzen 4000G has 24 PCIe 3.0, except 4 for communication with chipsets, just 16 to provide discrete graphics cards, 4 to NVMe M.2 SSD, not much just good.
Renoir does not natively support PCIe 4.0, which is a bit of a shame, but on the APU platform, PCIe 4.0 does not really help, and it significantly increases costs and heat.