With the minimum graphics card for Arma 3 being an 8800GT or Intel HD4000 and the recommended being a GTX 560, your 640 is right between those. Worst case, give it a try and if it doesn't perform as well as you'd like, upgrade.
jet engines inside your computer case
I'd get a Gainward, those Windforce coolers are amazing, really quiet and they run cool. I have a mate who sells a lot of graphics cards on ebay, he buys them used/returns and then he tests them at my house because he doesn't have a test computer, the Windforce cards are always the quietest running cards.
Nothing wrong with Asus, but know what you're buying because some cards are like jet engines inside your computer case, others can be whisper quiet.
700 series just took price cuts with the release of the 780ti, good time to grab one.
You probably mean Gigabyte, not Gainward
The Windforce cooler tend to get quite loud under load, that's why I'd always recommend either EVGA or Asus. Both stay reasonably quiet while performing better than the Windforce cooler.
Also prices for the 700 Series will drop even further as the Maxwell architecture is right around the corner (February/March)!![]()
Oops you're right yeah. I always get those mixed up. I find those Windforce coolers are the best under load. Tested various different sizes of fan aswell as the 2 and 3 fan variants.
Most cards are pretty decent but In my experience the Windforce cards are the quietest and are usually stable below 50 degrees under full load. Obviously that will depend on the case used and the room temperature, but as a basic example.
20832, I'm not sure what you're on about with the Windforce cooler, it's much quieter under load than a reference cooler by virtue of being, well, a better cooler... Windforce and other similar multi-fan designs have oodles more cooling capability than a reference blower design and this allows them to run at lower fan speeds under load, which in turn means less noise. Simple physics.