Results: Arma 3
The 60 MHz advantage wielded by PowerColor’s LCS AXR9 290X shows up at 4800x900 and 5760x1080 using Arma 3’s standard quality preset. At 1920x1080, the results aren’t as consistent.
Minimum frame rate isn’t a problem when you play at this title's standard preset using such powerful graphics hardware.
Arma 3’s Ultra preset appears to make 1920x1080 results somewhat more relevant, though.
Performance drops to around 30 FPS for all four configurations at 5760x1080, raising the question of whether the game can actually be played smoothly at this combination of high resolution and the Ultra detail preset.
Our frame rate over time chart shows that 5760x1080 really is playable on a single card, if barely.
$100++ from GTX 780 Ti
It has a $150 cooler (including the back plate, etc).
Of course Asus has a special cooler too. But Asus had the opportunity to drop its price, and the 290x has indeed dropped by $50 to $100 in the past two weeks. Supply is catching up with demand.
Unfortunately for PowerColor, its LCS 290X has been out-of-stock for more than two weeks. So they get stuck with prices that are at least two weeks old, at least until someone gets new inventory and lowers their price.
Sucks to be them, they should have restocked their sellers more quickly :)
But it's still cheaper than a water-cooled 780 Ti :)
Did you happen to notice any variability under load for your core speed while overclocked on the LCS card?
I have a Sapphire Tri-X OC R9 290X that is rock solid at its stock 1040MHz, but that starts bouncing the core clock all around when any core overclocking is applied.
With my quiet fan curve, load temps top out around 85°C; well below AMD's specified throttle point of 95°C.
If your liquid cooled cards are solid at 1200MHz, I am curious if Power Tune starts to throttle in a less severe way after going above 70- or 80°C.
Thanks for confirming that your test card was not throttling; back to troubleshooting my setup!
Good point; I will have to retest with a cooler fan curve.
Not sure if this will be the issue though as even a 20MHz bump to the core, and +50% power limit added to this, causes throttling with under 85°C temps.
Thanks for the thoughts!