Leandre Robitaille wrote: ↑Tue Sep 10, 2019 3:06 amAssuming you have a limit of 64gb of ram on your motherboard and are doing a massive c2c of 200+scans.
Might be worth considering AMD threadripper as an option in this case as most mid-range TR4 motherboards support 128gb RAM at this stage and you can pick up high core count CPUs at very reasonable cost. Once you go beyond 128gb RAM things get expensive.
Is ram speed worth the investment? or would gain be minor and not worth the premium price fast ram goes for. All my current configs are loaded with 2666hz ram CL19. (We have a deal with dell and we have to buy from them and this is their fastest ram). Would faster ram be world appart in speed increase, did someone test speed increase on a similar built and changing only ram.
I think it is rarely the bottleneck but if it were the maximum potential gain moving from 2666mhz to 3200mhz would ~17% and I doubt you'd ever realise that. I went for 4x16gb 3200mhz on my new build as the price difference between it a 3000mhz was quite small but the cost of 3600mhz was much higher. I don't currently get any advantage for 3200mhz over 2666mhz on my 1950x but will do if and when I upgrade to the next generation of Threadripper.
On one of my (4) computers I feel my cpu is too strong (Xeon gold 6240) and it is especially bottlenecking when the scans are loading as virtual memory on a larger c2c( all cores drop to 5-10% load). Hence my interest in the intel 900p, has anyone tested this drive in the past?
Virtual memory is always going to be comparatively slow, even on SSD. In addition to CPU, look at potential disk access bottlenecks and make sure you've also got also monitoring system processes, as theses will be doing a lot of the work. You also need to consider number of PCIe lanes available when working with virtual memory across RAID, where the motherboard comes into play as well as the CPU and SSD speed.