Update 02.04.19: A new version of this build has now been released. You can view it here.
The following build is an entry level machine for working with solvers. I believe this is a good build for people for whom it is not economic to build something more higher end like the Threadripper 1950x build I posted or would simply prefer doing the heavy lifting on a server machine and use their local machine primarily for viewing solutions and some light solving, such as low SPR simulations (HU pots with an SPR of 4 or less), preflop HU simulations or other preflop simulations with high levels of abstraction. The cost of this build at the time of writing in USD based on US hardware prices is approximately 1000 USD.
8 core/16 thread processor. Often considered the best value for money on the Ryzen AM4 platform. Comes with a stock Wraith Spire cooler. You can even do some light overclocking with this cooler.
AM4 B350 chipset motherboard with support of up to 4 sticks of DDR4 64 GB RAM. Not much to be said, this board is clean and has everything you need for a budget workstation build.
Probably the most crucial part of this build. 32 GB is the smallest amount of RAM I would recommend for a solver build. In Monker Solver this enables you to start basic preflop simulations for PLO, as well as analyze low SPR pots as mentioned above, such as 3-bet pots.
Good value for money SSD with plenty of storage.
Basic graphics card for office work and video. Supports up to two external monitors running at 4k resolution. Connection options are HDMI, DVI-D and VGA.
Versatile Cooler Master brand case.
Ample power for this build with room for add-ons, such as a more powerful gpu if desired.
For storage expansion, at approximately 50 USD, this is a good value for money option for additional storage.
The most obvious upgrade option here is to upgrade the RAM. I selected 2×16 GB RAM sticks, so that another 2 could be added to the MSI B350 PC MATE motherboard as an upgrade option. The AMD AM4 platform only supports dual-channel memory configurations, so these are efficient allocations of RAM. To upgrade the RAM, simply buy another kit of the Corsair Vengeance LPX RAM. Make sure to buy the same kit with the same speed and timing (CMK32GX4M2A2133C13).
If you would like to see a build suggestion for different hardware, please post your suggestion in the comments below.