Power Cuts Out/ Pc Random Reboot (Square Enix doesn't even care)

[Kerberon]

At a guess its the psu. ff14 is not well optimised and draws more current than many other games. With a new card that is going to draw more than your old one, this is my best guess.

[Raist]

At a guess its the psu. ff14 is not well optimized and draws more current than many other games. With a new card that is going to draw more than your old one, this is my best guess.

QFT. That card is designed to consume 230W by itself---2x 8-pin connectors just to power the beast. Each of those 8-pins is there to provide up to 150W each, and then there is the 75W that goes through the PCIE slot. So right there, you potentialyl have a headroom of up to 375W that could be consumed by a graphics card. That's not including up to the 125W (or higher as they keep stacking more cores) that may be needed for the CPU, then all your RAM, Fans, drives, USB devices, sound card, north/south bridge, etc. When you're playing with that level of design, you need a very robust certified PSU.

Review the specs of your older and newer card. Note that the power requirements of this new card (230W) are more than double the need of your previous card(~110W). You may have needed to included a higher end PSU along with your new GPU. If you were on par with what was needed for your 5770, you very well may be underpowered for your new 770.

Note also that beast has 3 fans on it that are not exhausting the heat out of the case--it blows it straight down towards the bottom, which in turn is going to warm the cooler air and then come right back up and get recycled and potentially come back even warmer. You essentially have a mini space heater in there now. Need to be exhausting more air out of the case now, maybe even actively drawing air in from the bottom/front if you weren't already. You are going to need good airflow through that case more so now than ever.

Now, couple this with the fact that FFXIV is not optimized very well (unlike all the other games you play, which may also be using higher DX levels native to the OS). XIV is still using DX9 and portions of DX8.1 code. Ever since Vista, ANY calls for DX below DX10 are always run through an emulation layer (in other words, by design it can at times make them actually more CPU dependent than GPU dependent). Direct hardware access was nixed with the release of Vista--the API's are much more CPU intensive by comparison to XP and 9x Windows. What this means is that XIV can hammer the piss out of all of your subsystems at once. By comparison, each of those stress tests you ran were biased to stress particular subsystems over others--not stressing them equally all at once, and if they were tapping DX, they may not have been using DX9/DX8 calls to do it either. So you may have been getting an apples/oranges comparison with your testing.

Another thing to consider is that the voltage regulation on your motherboard may not be up to snuff. It's not uncommon for the capacitors to dry out, skewing the efficiency. Your CPU, RAM, PCIE slots, and/or north/southbridges may not be getting a stable power supply when such a wide-scale demand is put on the system when running XIV. I faced this problem with a Gigabyte m-board within about 4 months of installing it years ago--it couldn't even run FFXI reliably. Fortunately, they have a really good replacement policy--I actually got a newer revision with "harder" caps in it, and it's been rock solid for about 5 years now. The same thing happened to me with an MSI board back in the 90's as well. Note also that this phenomenon can also apply to the VRM's on the GPU as well, though it is less common (it's usually more an issue of cooling the GPU's VRM's than them flat out dying on you).

TDLR:
FFXIV is much more demanding on all your subsystems at once than any of the other games/benchmarks. You may not have been stressing the system in the same way. That particular graphics card has nearly double the power demands of the cards we are used to dealing with, so you may need a better PSU--if you didn't upgrade the PSU with your GPU, that may indeed be an issue. That card is also generating a lot of heat that is not getting exhausted from your case, causing more heat to build up inside the case that will impact all other subsystems stability---need to be exhausting more heat out of the case. Enjoy your new space heater! ^-^

[ShadeKun]

Now this, this is an answer. Wish you'd work for square enix support Raist.

To reply to you tho, the case itself is quite open, I've made my share of modifications to make sure proper air flow goes through it and trust me the temperatures are stable enough and not rising at all. Related to the stress tests, I did stress test the gpu alone once but then I ran several at the same time because I thought exactly what you mentioned "FFXIV is much more demanding on all your subsystems at once than any of the other games/benchmarks" and the system was stable. What I forgot to include in my testing was the fact that the game is a multiplayer and there's a stream of data also being sent and received by the computer while the whole system is being pushed. So I went and downloaded another multiplayer game, luckily for me I got a Nosgoth key (another game by square enix) and truth be told soon enough pc crashed. So after reading up and actually searching for my psu (Nox Urano 600w) and my graphics card was like instant solution, need a new psu, which is a shame really cause when I bought my card the tech that sold it talked with me about the psu I had and about the connectors for it and he said it should be fine. Oh well. Getting an 80 plus certified soonish and everything will be sorted out hopefully. Shame that I had to waste over a week of own research and actually posting here to achieve a conclusion. Again thank you for your help Raist and Kerberon too, proving to be more reliable than square enix.