Look at boincstats to see what the average ppd is for the specific intel and amd that you are looking at.
I think there is more of a discrepancy on performance with what operating system you are running. There have been several conversations regarding this. I tend to stay on windows, so I don't worry about what. I'm just happy to be able to contribute.
Edit: https://boincstats.com/en/stats/-1/host/breakdown/cpu/

I'm not a PC expert, so this analysis could be flawed. With that out of the way . . .


I have an Intel i5 4670K overclocked at 4.00 GHz with 16GB of DDR3 RAM. Microbiome jobs that are estimated to take 1hr are taking 1hr2mins

I have a Ryzen 5 1600 overclocked at 3.6 GHz with 8GB of DDR4 RAM. On the Ryzen CPU, the same Microbiome jobs have an estimated completion time of 1hr37mins and are taking 1hr43mins.

Based on clock speed I would expect the Ryzen jobs to take about 11% longer to run rather than the observed 66% longer run times.

Assuming 8GB of DDR4 RAM for the Ryzen isn't a huge bottleneck relative to the 16GB of DDR3 RAM for the Intel CPU, I'm guessing that these jobs are really optimized for Intel CPUs, i.e. with the same clock speeds and RAM, I believe that time to complete each job would be shorter on Intel CPUs than on AMD Ryzen CPUs.

It's possible for me to overclock the Ryzen 5 1600 to 4.0 GHz, but I think the heat load with all cores running at 100% would be too much for my single fan AIO water cooler, so I don't think I'll be able to test this assumption, unfortunately.

Given the sheer number of Intel CPUs in the world, it makes sense for developers to optimize code for Intel processors . . . .

Be very careful with MIP1, since this project allocates a lot of memory (and it seems to forget to release it at the end of the task).
For example, on a Win7 x64 host (i7 4770K, i.e. 8 threads), the average RAM allocation is <3.5 GB, with MIP1, it goes up close to 8 GB. If you use all the available threads of the Ryzen, 8 GB RAM is definitively to short; you need at least 16 GB.
Cheers,
Yves

Interesting, thanks. On the four core I5, 3 of the 4 cores have MIP1 jobs currently which are taking just over 1hr each to complete, consistent with the estimated time to finish and previous observations.

On the 6 core/12 thread Ryzen, I have 10 MIP1 jobs currently running, and they are now taking about 3hrs to finish, much longer than the estimated ~1hr54min time to completion, so it seems many MIP1 jobs running simultaneously are slowed down as you pointed out.

I wonder if something changed in the MIP1 jobs with a deadline after 18DEC2017? The MIP1 jobs with deadlines on or after 19DEC2017 are definitely running significantly slower than previous MIP1 jobs I've processed on the Ryzen.

FWIW, I rebooted the Ryzen machine this morning, but the MIP1 jobs are still taking about 3hrs to finish (yikes!).

Hi,
I currently have a dell xps 8930.
It's running an Intel i7-8700. Clocks stay around 4.3 ghz and it has about 10 MIP running right now. It's taking an average of around 1 hour 20 minutes per WU.
I'm probably going to return this machine because of extremely loud fans and high CPU temps - 80+ c in a desktop is simply ridiculous. How are folks liking the Ryzen 7-1700x? I think your best bet is to try running MCM. That seems to give a stable idea of how they run.
Right now, this seems to be taking around 2 hours and a bit per MCM on this i7. A far cry from the 4 plus hours on my fx8350, which this is replacing.