PC Ekspert Forum - View Single Post - Nadolazeći AMD socketi, ploče i procesori

The Exiled · 04.06.2024., 13:03

Citiraj:

Autor Brzi Picek

ok shvatil san, znači memorija mu neda da se zamaše, ali ako radi na istom taktu jezgra ond amora da isključi više jezgri da ne povuče više od 120W jel tako , znači u prevodu L3 memorija u stvari samo smeta , ako ti zbog nje smanji broj jezgri (takt npr)koje rade
jesam li pohvatao konope ?

Nema gašenja jezgri, samo se radi o dvije različite implementacije, pa svaka radi na svoj način, a opet su dio istog paketa.

120W TDP je tu reda-radi, jer procesor je u stanju povući više od 160W, makar cijela Zen 4 generacija se može dodatno u BIOS-u podesiti kak kome paše.

Citiraj:

Looking at the main specifications of the Ryzen 9 7950X3D, it has 16 Zen 4 CPUs cores and operates at a TDP rating of 120 W; this is some 50 W lower than the regular Ryzen 9 7950X. According to AMD, the more relevant Package Power Tracking (PPT) rating is 1.35x the TDP, which puts the socket power output at up to 162 W. The Ryzen 9 7950X3D also shares the same turbo frequency as the Ryzen 9 7950X, which is 5.7 GHz, but AMD has lowered the base frequency by 300 MHz, making it 4.2 GHz on the 7950X3D. Memory support remains unchanged from the rest of the Ryzen 7000 family, with JEDEC-compliant speeds topping out at DDR5-5200, while overclocking (AMD EXPO, etc) can take it over DDR5-6000.

Touching on the design of the Ryzen 9 7950X3D, AMD is employing an asymmetric chiplet design, where one of the CCDs is a vanilla Zen 4 CCD, and the other is a Zen 4 CCD with 64 MB of V-Cache stacked on. This means that the Ryzen 9 7950X3D has one CCD with 96 MB of L3 cache, while the second "vanilla" CCD still has the usual 32 MB available. AMD's Infinity Fabric Interconnect keeps everything flowing, which connects both CCDs to the centralized IOD in a die-to-die connect flow.

Notably, just as the two CCDs are unequal in cache, they're also unequal in peak clockspeeds. Attaching a V-Cache die to a CCD limits the highest clockspeeds it can attain, capping it at around 5.25GHz. Thus, compared to the 5.7GHz max clockspeed of a plain Zen 4 CCD (as used on the 7950X/7950X3D), this represents a roughly 8% frequency handicap for adding V-Cache. Which is why AMD is including both types of CCDs on their Ryzen 9 7000X3D parts, ensuring that applications have access to whatever type of CCD better fits their processing needs.

Izvor: AnandTech