There are benchmarks on page 7. To summarize, it's slower than a 4690K in all cases, and running it in 2-CPU mode is slower than 1-CPU mode in all cases. Still beats AMD's high-end FX-8350 processor in all cases, amusingly enough.

That's pretty much what you'd expect. Gaming performance is strongly correlated with single-threaded performance. Many games are essentially single-threaded and even when they're multi-threaded they are still subject to Amdahl's Law. Certain parts of games cannot be multithreaded (eg all draw-calls must be made from a single thread in all APIs prior to DX12 and Vulkan) and they tend to limit overall performance.

So with narrow exceptions, single-thread performance is king. The best example of this is the G3258 - it's not really that powerful a processor, but it can be overclocked to really extreme levels and keep up in many games just through sheer single-threaded performance.

Going across multiple processors is also particularly brutal because of greatly increased thread and cache synchronization costs. So again, not really a surprise that it's actually slower.

If you need more than a 4790K or 6700K can deliver, your next stop is the 5820K or other -E series processors. But not many games really need or can make good advantage of more than 4 threads, and even fewer need more than 8.

Or you could buy an entire system for 700 euros?

http://www.ebay.com/itm/HP-Z420-Workstation-E5-2670-Xeon-RAM...

IIRC Linus Tech Tips does take a look at a similar system for video rendering. It's probably not going to do super well in games because the bottleneck is usually at the GPU anyway.

Games benchmark is on page 7, does pretty okay.

Then you should probably import one -- start with the link in the article. No way the duties will be anywhere near that much.