![]() ![]() It was about the tech & operation of 3rd gen AMD3000 chip design, not particular any model. Thanks for the replies guys ^^ You're all right, in respective ways.īut have to say again that my question wasn't about FPS/game performance or trivial things like that, or it's response with the former 2nd gen AMD. But is there better and do you have to settle? Yes there is better and no you no longer have to settle for mediocre 3200CLanything anymore. Will you do fine with 3200CL14? Yeah, you'll do everything you want. My 2700X does better at 3600CL14 than it does at 3200CL12 and the IMC on the new CPUs are leaps and bounds better. The new IMC can do much more than the old.Īnd then the folks that say settle for 3200CL14 are just parroting what they read or hear from other folks that don't know. I've seen people boot 3800 12-11-11-11-11 timings and run benchmarks. And if your CPU can handle it then 3733CL14 or even 3800CL14. If you want to shoot for anything then you want 3600CL14 with tight timings down the line. On a 2700X you can do 3600CL14 so for sure you can do that on a Ryzen 3000 CPU. It isn't the max speed plus timing you can achieve. Now when you see 3600CL16 just disregard that. So you lose some performance, but not all of it. So if you get faster RAM than 3600MHz (something like 4200MHz) you can lock the IF at 1800MHz and not the actual half-speed of 4200MHz. With that said your best bet is 3600MHz RAM at as low timings as you can get. You can (are supposed to be able to) lock the IF at 1800MHz. Not a topic about if it's overkill or not.) this is about understanding the AMD configuration once and for all, & the way it's best supposed to be used. I hope you'll google with me to try figuring this out thank you in advance for answering those 5 questions I have. So what is 4400 CL18 in 2:1 mode then? Sweet spot for stability when overclocking? ![]() (q5) Which 2 of the modes are best for which scenario? as they stated the sweet spot for performance is 3733 CL17 in 1:1 mode. (q4) What processes are happening behind the modes, that 8.18ns of 4400 CL18 results in 75ns system latency. ![]() (q3) How does the mode affect the system? is 2:1 mode something like a more buffered response to it's controllers/drivers whereas 1:1 is not? (q2) Please explain to me in a bit of detail, on how the mode functions? Does it switch modes by detecting the memory speed in mhz? or CL? or both? The speeds shown to work via XMP, like if I install 2dimms - 3600mhz CL16 on 16-16-16-36 timings, rates at 8.89ns latency.īut it's latency in relation to IF system bus is shown to work in 1:1 mode yielding 69ns Raw memory Latency.Īnd if I installed 2dimms - 4400mhz CL18 on 18-19-19-39 timings, rating at 8.18ns latency, it's shown to work in 2:1 mode yielding 75ns Raw memory Latency (We all know memory ram is always sensitive to compatibility, but working ram listings aren't even listed on ANY x570 motherboards manufacturers website and neither the ram manufacturers.) On the official AMD picture, they state that at the shown speeds, they are plug & play and JUST works. (q1) What does it mean to the system? Does 1:1 mean > 1 to 1 cpu/mem cycle? and 2:1 meaning 2 memory cycles per 1 CPU cycle? or something else? Now I'm hoping someone "scientific" can please explain to me, the mode/ ratio 1:1 & 2:1 on the Infinite Fabric system bus. And I'm only finding bits of info, not a full explanation.įrom these 2 videos, I've learned that Infinite fabric is the system bus speed.īoth between cores in the CPU module & as the entire motherboard of components. I'm currently searching all over the net to understand this Ratio mode & Latency. While 3600mhz CL16 yielding 69ns is the best value-price/performance for 1:1 ratio/mode.īut higher clock speeds getting in 2:1 ratio/mode with 4400mhz CL18 at 75ns latency. I saw a picture (attached) that shows the sweet spot being 3733mhz CL17 yielding 67ns latency. I've been breaking my head to understand Infinite fabric (IF) & how high of a clock speed RAM I should/could choose with the new AMD Ryzen series. ![]()
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