Of course, we need the ability to unlock the data to test these 2 hypothesis and more people with boards. We will know more in a month or two when the ability to alter RAM clocks and timings happens. There is one reason to believe Hypothesis 1 - the Geekbench shows that secondary timings do matter at 3466. Overclocking the RAM may be overclocking the Infinity Fabric, which itself is believed to be based on HyperTransport. In the previous article I wrote, I noted that unlike Skylake, where there is a Core Clock, an Uncore Clock, a RAM clock, and the Base Clock of the CPU is separate from the PCIe functions, Ryzen does not have these separations. Hypothesis 2: The Infinity Fabric Speed is tightly related to the memory clocks. While the quad channel RAM is a bit slower, it's still a lot more bandwidth because it is quad channel. Keep in mind that right now on X370, you've got 8 cores being fed by dual channel RAM, while on X99, you've got 6-10 cores being fed by quad-channel RAM. Memory clocks have a disproportionate effect because they are the bottleneck. If so, an L4 or even an eDRAM like solution would see huge gains.

Hypothesis 1: Due to the CCXs using the RAM to communicate with each other, in the absence of an L4 cache, they are using DRAM and they love the higher speeds, as unlike Intel, the unique topology makes them the last level cache. With faster RAM, Ryzen clearly sees gains. Infinity Fabric first checks the 元 caches of the other CCXs and if the information is not there, checks DRAM.įrom the Finnish website IO Tech, we have: DRAM is used as a cache to communicate between the 2 CCXs due to the way Infinity Fabric works. In that thread, I hypothesized in the OP that Zen might love memory due to the unique topology of Zen, the CCXs. In my previous thread, there was a discussion about possible theories and what to do to mitigate these problems. This is a follow-up to my earlier thread: With faster RAM, the gap that Ryzen has is mostly gone.

As most OCNers know, when Ryzen came out, it was very good at workstation, but a bit behind (maybe 10-20%) Kaby Lake, clock for clock at games at 1080p. The purpose of this thread is to further discuss the new information + about Ryzen and CPU performance in games.

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