[SOLVED] Random GFX-driver CRASHES - FPS Freeze2Login (780 GTX)

comp-mode: crash
SSD: crash
driver 334.89: crash

heating up my gfx card to 79° with FurMark: rockstable

What hardware did you change between when it was last working and now?

Have you tried updating your motherboard's firmware/bios?

Was playing in the early 2013 on nearly completly different hardware.

Changed Board, CPU, RAM, GFX.

Checked if Gigabyte realeased a nes gfx-card BIOS (what isn't the case)
But didn't check the mb-BIOS.

Even with all care, a BIOS change is still a risk, thus I avoid doing this so far.

I will think about it.
Then write some mails to the support.
But I will not waste another whole WE on bugtracking this issue. :/

@Korgath

In what a PCIe slot do u use your 780?

x8 3.0

x16 2.0

x16 3.0

I just read that my PCIe slot number one only supports Gen. 2.0 but with 16 lanes
and only my 2nd PCIe slot supports Gen 3.0 but only with 8 lanes.

I will also underclock my VRAM to test this too after work.

SOLVED:

That damn ****ing GFX-card is just unstable with the behavior of the PoE engine.

You can notice FPS-down-spikes in PoE when new 'objects'/fx are loaded.

Those moments must be the cause for my card crashing (hickup-style).

Now I reduced (underclock) my card:

-35 MHz core
-10 MHz VRAM
+62,5 mVoltage (voltage-only didn't solve this)
setting @ temp-prior

Now I have another problem that OC Guru 2 sometimes f**ks up and stuck the core at only ~500 MHz which indeed causes the FPS to drop.

But I keep on testing to underclock with nvidiaInspector for now.

I mailed my seller and hope for a retour (no RMA to gigabyte).

But what still is suspicious why the PoE engine is causing such stress or clock-variity so my card run stable in every other game.

Hope this will run stable now even for hours.

additional infos:

it really runs now. O_o

running in windowed fullscreen seem to fix the "stuck at 500MHz"-issue.