I have had it for about a year and it has left me with only positive impressions.
I will not mention temperatures and benchmarks as there are sites and reviews online that are much more detailed, I will only refer to my experience as a user.
I mainly use it for gaming in combination with a 1080 and there is simply no reason to go for a more expensive model (such as 1800x or 2000 series) as there is no chance of bottleneck or performance loss.
The only reason I would recommend something bigger is only if dealing with video editing, AI, and heavy applications.
At the moment, it is the best value for money in the gaming category.

Edit: I upgraded to 2080 gaming x trio so I will complete my evaluation regarding the gaming part.
All the following games have been tested on an ultrawide 144hz monitor 2560x1080 with ultra settings:
Shadow of the tomb raider, assassins creed odyssey, and battlefield V, average 75% cpu load, 75% gpu so even now there is no bottleneck.
I do not mention temperatures as this has to do with the cooling each one uses but with a corsair liquid cooling I never saw above 55 degrees.

Edit 2: I see that its price has now exceeded 200 euros in Greek stores (which is UNACCEPTABLE since it remains the same or lower abroad), so until it drops to normal levels obviously it is worth getting a newer model which will be better and cheaper

I have only positive things to say about this processor. I have been using it for about 2 months now and I am a casual user who enjoys gaming.

The response is incredible no matter what you give it to do. I am in the mid-low range category and I am not obsessed with FPS or numbers, but I mention this for someone who is considering upgrading from a Ryzen 5 1500 or building a new PC.

Having had both processors for the same games, I can tell you that with the 1600x, I have an average of 10-15 fps more than with the 1500x. It also has slightly better multitasking response.

Now, let's talk about temperatures... I can say that the 1600x manages to have 3-4 degrees lower temperature than the 1500x on average, especially with heavy games like Shadows of War and Two Point Hospital. The processor does not exceed 58-61 degrees in FHD resolution (1080p).

Without a doubt, this processor is the best value for money at the moment for anyone who wants to play everything at 1080p with an average fps of 50+.

I believe that for the current price, it is simply the best choice for someone building a new PC and seeking performance without spending an extra 100-120 euros to go for a similar Intel processor, and instead invest that money in a graphics card, for example.

My PC specifications since December 2017:
Motherboard: Gigabyte Gaming B350 V1.0
CPU: Ryzen 5 1600x
GPU: MSI Nvidia GTX 1050 Ti
RAM: 2x8 = 16 GB RAM 2400 MHz
Thermaltake Smart 530W

We have and we say. I bought this CPU and paired it with the GTX 1050ti that I had previously in an older build. The CPU is a beast. With Intel's Coffee Lake, it certainly has some competition BUT if you're not exclusively interested in gaming but also multitasking, the differences between an 8th generation Intel and this one are small. Personally, with the 1050ti, I average around 75-80 fps in GTA V and a maximum of 110. Besides that, the CPU performs well in multitasking. When I have 7 days to die open and at the same time I'm hosting and running a server and have two or three other programs open simultaneously and the CPU usage doesn't even reach 25%, then you understand what kind of beast we're talking about. With a cooler of 40€, it never exceeded 35 degrees in idle, while the most it reached was 62 degrees under a lot of pressure, but the CPU was responding perfectly fine and without any freezing.

*However, now with the Ryzen 2600 and 2600x, it's no longer worth going for this processor.

First of all, if you are interested in overclocking and want a cooler, go for the 1600. The 1600x requires you to buy a cooler, but it has the same out-of-the-box timings as the 1800x and has a better chance of reaching 4ghz with a lower vcore than the 1600.

In most games, it produces 10% fewer FPS than an i7 and slightly less than a latest generation i5 at 1080p. The difference is smaller at 1440p and negligible at 4k. Unfortunately, most games only utilize 1 to 4 cores and are optimized for Intel CPUs. However, with future upgrades to gaming engines, there will definitely be performance improvements as the future belongs to multi-core processors. Nonetheless, you won't have any problems as it is great for gaming and in most games, it has similar FPS to the 1800x.

Now, for everyday use, live streaming, image and video editing, it performs significantly better than an i7 7700k. Additionally, for those interested, all SSE instructions, AVX, and AVX2 are much faster than Intel processors.

For memory, buy after consulting the motherboard you have chosen for a list of memory modules that are guaranteed to reach 3000-3200mhz. The frequency of the memory plays a role in significantly increasing performance. The Crosshair ROG VI Hero can handle 3200mhz with Hynix chips without using BCLK.

With default clocks and liquid cooling, I have an idle temperature of 30C on the 1600x and it reaches 54C under full load stress.

Install the AMD chipset and the Windows Balanced Ryzen profile will automatically be set in Power Options. Auto keeps all cores at 90% of their frequencies and prevents parking of cores when idle. For better performance, select the High Performance profile, which constantly keeps the multiplier at its maximum for Ryzen. If you choose the Windows Balanced profile, the 1600x will lower all cores to 2.2ghz when idle, after some time it will park at least 2 cores and the rest will go up to 3700mhz. For everyday use, it's perfectly fine as it saves 20 watts in idle mode (I have an electricity consumption meter), but if you want the full power of the processor, you need to change the profile as mentioned above.

For overclocking, don't use the traditional method, try using motherboards that have P-STATE overclocking. It has better energy and temperature management as you can adjust the processor's multiplier based on usage.

Best choice for gaming and regular use from AMD, and because words do not describe a processor I compare it to the equivalent option from Intel.

This AMD processor competes with Intel's i5-7600K and comes close in almost all categories, Ryzen is better in multitasking (even compared to a 400 euro i7) while slightly worse in games. Like other AMD processors, they work better with fast Ram (2,800 - 3100 mhz) and also their performance in future games will improve due to AMD's general optimizing and optimizing for 6 and 8 cores in games.

As for the price at the moment I am writing this (290 euros) it falls short, it is 50 euros more expensive than what AMD has published and 40 euros more expensive than the i5-7600K (250 euros) which is only 10 euros more expensive than the price given by Intel, again depending on everyone's needs AMD is worth it for its 6 cores.

edit: Look at how prices are falling.. :P I don't know if it's value for money yet, I just want to mention that it is quite close to the 2600 and if you are between the two, don't get the 2600 if there is a significant price difference