when you buying huh

Now i start to think it's an ex-miner cards. Doesn't matter much if it perform like it should and still have factory warranty.

doubt that since the card only have 1 year of warranty left.

R9 390 XFX 

My cousin's HD7790 cannot boot into windows. If no AMD drivers installed then it can, but after installed, it shows BIOS screen and then no video signal.

I put it in my PC and the same thing happened, when I put my GPU it works fine.

Anybody else faced the same problem?

It is an interesting benchmark nonetheless. It means users can toggle off some of the options that causes big hit on the performance.

Since my bad experience with reference r9 290, i phobia with r9 issues so always want to keep it cool.

My case is maxed out already need a better one

its silent bro and as cool as watercooling 

The refresh rate window is panel specific.  The adaptive-sync spec is from 9-240hz, but no way panel manufacturer will allow the panel to refresh as low as 10hz. 
At this moment theres no freesync monitor that can do VRR below 30hz that im aware of.

Freesync monitor have refresh rate window from 40hz.  Within the Variable refresh rate (VRR) window, the freesync works flawlessly.  But thing get really different between freesync and g-sync when the frame rate drop below the vrr window.  When fps drop below 40, you'll get the classic stuttered like any other non vrr monitor.  In g-sync, they implement the frame interpolation (frame duplicating/doubling/tripling), if the FPS drop below VRR window.  For example, if the fps is at 30, g-sync monitor will refresh the panel at 60hz, while it g-sync module buffer the fps by doubling it to match the refresh rate.  If the fps at 20, the panel will refresh at 60hz, the g-sync buffer will triple the fps.  The g-sync module will keep the panel to refresh at the VRR window, at any fps without odd frames that mismatch the refresh rate.

It is still unknown why freesync unable to do frame doubling, the fact that VESA adaptive standard DP1.2a+ white paper have frame doubling technology too if the fps drop below vrr window.  My speculation is, the lack of asics/frame buffer in panel scaler to achieve what g-sync can achieve.  I do think this can be done in the GPU buffer itself. Maybe lack of mature drivers?

However, if fps shoot above VRR window, freesync have the option to have v-sync on or v-sync off. While nvidia g-sync will force v-sync on (cap fps) at maximum panel refresh rate.

List of freesync panel and its VRR window.

The samsung UE590 final spec is not revealed yet. But i bet it is minimum 40hz maximum 60hz. 

The 9-240hz is the universal refresh rate space.  Not the panel refresh rate.  Freesync works within panel refresh rate.  The gpu negotiate with panel the VRR window before hand, and AMD claim this is more superior, and have 0 latency than nvidia g-sync.

There is no panel that can run at 9-240hz at this moment.

ooh my look at the price 

Truely a master race gamer, panel so mahal, i only have 1 gpu so I guess free sync is not a worthy upgrade for me

Should be no problem if framerate within the vrr window.  But i would like to see minimum 30hz for 4k panel. Not really concern on max refresh rate because current gen card hardly can output more than 60.  Minimum refresh rate is important because you'll encounter frame drops more often on 4k resolution.

Nah it wont be that much price difference. New cards plus new memory wont be cheap, plus GST.

Freesync is still at its infant state. Wait a few months for it to be more mature. I agree that higher refresh rate isnt that important because one of the reason of it is to achieve fluidity at lower framerate at high resolution such as 4k and above, other than to eliminate screen tearing of course.