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Any thoughts on a Ryzen build


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I'm needing a new desktop and I've desided to build a new AMD machine, but I'm conflicted between two processors. I'm looking at the 1600X or the 1800X. Both run 3.6Ghz. The 1600X has 2 fewer cores and a 1MB less L2 cache (vs 1800Xs 8 cores and 4MB L2 cache). The 1600X is going for $150 less here locally. I mostly use my desktop for software development, CAD and some video editing. 

My conflict is around single threading vs multi-thread performance. Most of what I do is single threaded or only makes moderate use of multi-threading. Coding IDEs rarely push the CPU hard and the FreeCAD has only limited support for multi-threading. I know Vegas (Video Editor) and Handbrake make good use of multiple cores but the 1800X would only provide 25% increase in performance and I only do video work maybe 15% of the time. I don't game on this machine ether. 


Keep in mind the 1600X should be 3 time faster than what I have and the 1800X would be about 4 times fater.

The build with include a new Gigabyte mother board, 16GB of ram. So I'm looking ether a $550 build or a $700 build.



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When building my own machines i tend to go all out on the motherboard, make sure it'll do everything I'll ever need it too, and bang whatever CPU in there that'll do at the time, then, as and when I need too I'll swap the chip out for something else..

If the $150 difference in CPU will give you more RAM, SSD or a better monitor then I'd get that in the short term, then at a later date get a better CPU as the price comes down or new chips are released..

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I know benchmarks are not the end all/be all. But if you look at them you'll see that the clock speeds have a direct effect on single threaded performance. The 1800X and the 1600X have the same clock speed and top the single threaded performance. The 1700 only tops the 1600X if you can fully take advantage of all of the cores and I'm not sure if I can do that enough justify that choice.



AMD Ryzen 7 1800X    15,416
AMD Ryzen 7 1700X    14,672
AMD Ryzen 7 1700    13,814
AMD Ryzen 5 1600X    13,122
AMD Ryzen 5 1600    12,371
AMD Ryzen 5 1500X    10,716


Single Threaded
AMD Ryzen 7 1800X    1,958
AMD Ryzen 5 1600X    1,942
AMD Ryzen 5 1500X    1,883
AMD Ryzen 7 1700X    1,867
AMD Ryzen 5 1600    1,832
AMD Ryzen 7 1700    1,760

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  • 2 weeks later...

I ended up getting a Ryzen 1600x and I have already overclocked it to 3.9Ghz with an air cooler. I haven't been able to get it to boot yet at 4Ghz. But there is a UEFI firmware update that I haven't applied yet.


Another thing I learned is that you need to go into the UEFI and set a memory profile to use fast ram at what it is capable of. Otherwise it will run at the default lowest speed and uping the ram speed gave me half of the performance boost I have gotten from overclocking.


The rest of the build is made up of:

Gigabyte GA-AX370-GAMING K5

Thermaltake Contac Silent 12 Universal CPU Cooler
2 8GB DDR4 3200 dimm

Thermaltake 700 watt PSU

and I reused my Nvidia GTX 750ti and a old ATX case.

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