3600MHz will probably be the highest MEMCLK doable for 24/7 use.Interesting to see if anyone can actually get memory to run at 4000MHz.
In typical benchmarks or real world applications / games.Even in situations where there's high traffic between CCXs?
220.127.116.11 AGESA, combined with the new memory controller FW variant should allow you to 3200 - 3466MHz on four 8GB DIMMs already.@TheStilt,
Currently I have a 2X8 16 gb G.skill 3600 C16 samsung b-die single sided kit. I am mainly interested in gaming, so the highest infinity fabric is most important to me, but I also would like 32gb. I can run this kit at 3456mhz C14-14-14-34 1T, but the latency is still kinda high around 69ns. Or I assume if I fiddle with sub-timings and other stuff enough I might get it to 3600mhz C16 2T, but I would assume that would be slower than the 3456mhz C14 1T that I am at, so no point, as you said 150 more mhz on infinity fabric won't help games much. So now my dilema is do I just buy the same exact kit I have now and populate all 4 ram slots to get 32gb, and will that allow me to get the same 3456mhz or will I only be at 3200? Or should I just order the best highest performing 32gb 16X2 kit and sell my kit? If the later is the case, can you recomend one or two 32gb kits that will for sure clock the highest and with low latency like you described? Because I don't really know what 2DPC dual ran, 8GB per IC means as far as what kit to buy. Assume money is no object (within reason) and I want the fastest infinity fabric, memory, and lowest latency of course. Thanks
P.S. And I don't need any RGB shit that corrupts and just costs more, unless it is the fastest/best kit
4xSR is just as fast as 2xDR modules, while 2xSR are somewhat slower.Thanks. I do have an 1800X at 3.95ghz, Corsair 1000Wpsu, Nvidia 1080, Corsair H100i, and C6H, on bios 9943 now. So I will take your advice, buy an identical kit and move to 9945 or next official bios. I thought for some reason dual sided/rank? were faster because they interleave. Or that 2 16gb sticks are faster than 4 8gb sticks. But if you say 4 8 gb sticks are faster I will do that.
But my memory on 9943/9945 at 3456mhz same timings is slower than on last official at 3350mhz! I've fooled around with everything, but can you think of a timing, setting, ect. that would make the same speed on the new betas a lot slower/higher latency, that I should set? Or is it just because it is beta and final will be same performance?
If they work a bit on latency, memory clocks, maybe tune the cache a bit further while gaining 10-12% in clocks, that would be a solid second gen.If AMD was to release a refresh of Zeppelin on a better process, offering significantly higher Fmax (e.g. 4.5GHz), then that would be another story.
The list of changes released for AGESA 18.104.22.168 is already rather extensive (and unusual).
Zepplin has 32 10GHz phys. Those get used for all off chip services. Am4 dictates how they are used, some for SATA,usb,chip set,m.2 and gpu. On server mbs it will likely come down to oem designs....If EPYC has 128 PCIe lanes and 4 Zeppelin dies, shouldn't a single die Ryzen be able to have 32 PCIe lanes?
Non-final silicon isn't just about clock speeds. There's probably other things they're tweaking.If they work a bit on latency, memory clocks, maybe tune the cache a bit further while gaining 10-12% in clocks, that would be a solid second gen.
Lisa Su has stated that the recent Naples demos were not on final silicon and that does make one wonder about a new revision - too early for a second gen.
Where / when has she stated that?
Source: Advanced Micro Devices (AMD) Presents at JPMorgan Technology, Media & Telecom Conference (Transcript), May 22nd 2017Lisa Su said:The public demonstrations that we’ve showed were versus a Broadwell architecture because that’s what’s currently available. But this was also not final silicon for EPIC. And so final silicon for EPIC will perform higher than what was benchmarked and we believe will be very competitive on dual socket platforms.
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