- Jan 29, 2015
- 69
- 0
- 4,660
Hello Tom's HW Community once again;
Backstory:
Recently my EVGA GTX 780 died and i RMA'd it. To my surprise i received a 780 Ti.
I've had it about a week but wasn't noticing any increase in FPS. I went to overclock it and noticed some things...
Problem:
The GPU idles fine; sits at 1006MHz, average Voltage (1.0370 right now), but under load it seems that the Core Clock and the Voltage is dropping.
If i stand still in a game, the FPS periodically decreases, and my Benchmarks in Heaven and FurMark are subpar for a 780, let alone a 780Ti. Sometimes the clockspeed will peg at 650MHz or 850 and remain there after i exit a game.
The card is not thermal throttling as the temps are low and no matter how much i increase the fan speed [read:how low the temp is], nothing changes.
Here's a screenshot at idle: http://prntscr.com/axm9ux
Here's a screenshot after a few mins of Heaven running: http://prnt.sc/axlzj2
The strange 0.975V is the voltage for Performance Level 2, not sure if this means anything or coincidence: http://prntscr.com/axmfsq
I have two monitors but only ever game on one.
Note: I see VRel,VOp in PerfCap a lot also.
Troubleshooting:
Moved card to second PCI Slot.
Reinstalled GFX Drivers
Power to "Prefer Max" in NVIDIA Control Panel
12V rail is good
Conclusion:
Framerates are subpar, and voltage is low. Core is underclocking itself under load.
I think i might try reinstalling Windows on another HDD and running tests again. Just to be sure this isn't a windows problem. I had stuttering issues when i lived in my old place but that's gone since i moved, and my old card blew up. Wondering if there's a problem in my system.
Specs:
i5-4690K @ 4.50GHz,
G.Skill RipJaws 16GB @ 2133MHz,
ASUS Z97-A,
Seasonic 1000W-XP.
Backstory:
Recently my EVGA GTX 780 died and i RMA'd it. To my surprise i received a 780 Ti.
I've had it about a week but wasn't noticing any increase in FPS. I went to overclock it and noticed some things...
Problem:
The GPU idles fine; sits at 1006MHz, average Voltage (1.0370 right now), but under load it seems that the Core Clock and the Voltage is dropping.
If i stand still in a game, the FPS periodically decreases, and my Benchmarks in Heaven and FurMark are subpar for a 780, let alone a 780Ti. Sometimes the clockspeed will peg at 650MHz or 850 and remain there after i exit a game.
The card is not thermal throttling as the temps are low and no matter how much i increase the fan speed [read:how low the temp is], nothing changes.
Here's a screenshot at idle: http://prntscr.com/axm9ux
Here's a screenshot after a few mins of Heaven running: http://prnt.sc/axlzj2
The strange 0.975V is the voltage for Performance Level 2, not sure if this means anything or coincidence: http://prntscr.com/axmfsq
I have two monitors but only ever game on one.
Note: I see VRel,VOp in PerfCap a lot also.
Troubleshooting:
Moved card to second PCI Slot.
Reinstalled GFX Drivers
Power to "Prefer Max" in NVIDIA Control Panel
12V rail is good
Conclusion:
Framerates are subpar, and voltage is low. Core is underclocking itself under load.
I think i might try reinstalling Windows on another HDD and running tests again. Just to be sure this isn't a windows problem. I had stuttering issues when i lived in my old place but that's gone since i moved, and my old card blew up. Wondering if there's a problem in my system.
Specs:
i5-4690K @ 4.50GHz,
G.Skill RipJaws 16GB @ 2133MHz,
ASUS Z97-A,
Seasonic 1000W-XP.
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