Results: Metro: Last Light
The LCS AXR9 290X maintains its small lead in Metro: Last Light, appearing to perform well across all resolutions.
That lead remains as we increase quality settings, though 5760x1080 begins to stutter as frame times exceed visual fluidity.
Dropping back to 4800x900 while using our higher test settings, we find that the air-cooled card stays above 20 FPS except for two frames.
The LCS AXR9 290X runs into a similar issue, though it manages to maintain at least 20 FPS.
$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!