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报告翻译问题
So, yes. It's pretty intensive on all of it. I've noticed the heaviest hit being on my GPU though. Almost all my VRAM is used, and the usage % is pretty high.
I loaded up one of my more recent cities with a population of around 200k. I have an i5 4690 and it was under full load (99%... about 90% of it going to Skyline and the other 10% to various other programs). I don't experience any performance issues though. Everything seems smooth and quick. Night time bumped CPU to 100% using 96% for Skyline. Again, no issues though.
My memory usage was only at 49%. Slightly more than 4GB going to Skyline and another 3GB or so going to other applications I have open (16GB RAM total). Night time bumped it up to 53% using 4.6GB.
GPU is a 290. When I move around the map, it jumps to 100% usage as it quicky renders all the buildings and stuff and then drops to nearly 0%. Sometimes hovers around 30-40% for a second or two. MHz used is around 560-800MHz out of the 1000MHz.
So, I'd say definitely CPU is the most important. GPU is pretty important. RAM... as long as you have enough.
I got a similar rig (4690K @ 4.5 GHz + 8 GB RAM + GTX 970) and my 240k city loads my CPU between 75~100%. Cities.exe process uses 3.8 GB (almost 6.5 GB of virtual memory).
Game runs at 4k (downsampled to full HD) and my GPU load is between 75~100% too. FPS goes beetween 20 (while zooming in) and 35 (zoom out).
At some point while city grows up, CPU is more important than GPU. Proof of that is if I run the game at full HD, FPS don't go up.
On my old rig, Core2Quad @ 2.4 GHz + 4GB RAM + AMD 4870 (512MB VRam!) the game ran fine around 30 fps up until 70-80k inhabitants in the city. But: simulation speed was already getting lower beyond the 50k mark. Days passing by slower and time acceleration getting almost useless. Then I bought an Geforce 780 and it did not get particularly better. FPS went up, but simulation speed only slightly got better.
My new rig i7-4790k @4.0GHz + 8 GB RAM + Geforce 780 (yes it went into the new one then) I can play 100k cities without any problems and with dynamic resolution on 175% and SMAA activated on steady 30fps and no impact on simulation speed. Although CPU and RAM usage also go up to almost 100% as with my old machine.
These observations were made pre After Dark though, I now notice a big fps drop during night times. Probably need to turn down dynamic res and switch to a less intensive AA-mode.