DirectX Error Overclocking Asus EAH6950

Toggle sidebar Toggle sidebar
S

sebzag

Honorable
May 29, 2012
13
0
10,510
I've got my shaders unlocked and am trying to overclock my card but no matter how much I tweak the voltage or powertune limit it will eventually crash even though my temps don't go over 70c really. I recently cleaned the VRM heatsink and re-applied TIM to the gpu, and made sure the cooling system is securely fastened to the board. Right now it runs for a decent while, 10-15 minutes, at 920/1375 @ 1.175v and +20% powertune. Believe me, I've tried many high as well as low combinations to find this ever elusive sweet spot I need. Could there be something causing the voltage to drop enough to cause instability? Again, the temperatures are low for being under full load so heat should not be a factor.

d9d75093_DirectXError.png
 
Sort by date Sort by votes
S

sebzag

Honorable
May 29, 2012
13
0
10,510


Ah! That may very well be it. I have all of that set to Auto I believe. Are you referring to the motherboard setting and is that the same thing as it's LLC? What are the recommended settings, or what you would suggest, for my system:

Intel Core i5 2500K @ 4.5GHz (1.35v)
Asus Maximus IV Extreme (Intel Z68 chipset)
8GB G.Skill Ripjaw @ 2133MHz (1.6v)
Asus EAH6950 2GB @ 920/1375[-ish] (1.175v) +20% powertune (75w pci-e slot power limit, max is 150w I believe)

This graphics card has air cooling, but the thing is a behemoth of a cooler, taking up 2.5 slots. I have it pressed up against the gpu really tight, and therefore only ~70c under full load.
 
Upvote 0 Downvote
S

sebzag

Honorable
May 29, 2012
13
0
10,510


The only adjustments I can make to VCCSA is to: set the Switching Freq. to Auto/1x/1.65x; enable/disable full phase control; and enable/disable Over Current Protection. The latter two are enabled and disabled, respectively.
 
Upvote 0 Downvote
S

sebzag

Honorable
May 29, 2012
13
0
10,510


Actually that is under the Digi+/VRM Power Control page. if CPU VCCSA is the same thing that you are referring to, that is set to Auto and fluctuates between 1.058 to 1.065
 
Upvote 0 Downvote
S

sebzag

Honorable
May 29, 2012
13
0
10,510


If CPU VCCSA is the same thing as the System Agent VCCSA you are referring to, yes I can adjust it. Althought my BIOS is referring to it as VCCIO. The only location it actually has an option with the exact acronym "VCCSA" is on the Digi+ VRM/Power Control screen, which only has values for the Switching Frequency. That being said, "VCCSA" does also make an appearance on the voltage monitor screen. It does not specify if it's referring to CPU or System Agent though. I do notice that PCH Voltage, PCH PLL Voltage, and VCCIO are all equal and fluctuate together between 1.058 and 1.065
 
Upvote 0 Downvote
S

sebzag

Honorable
May 29, 2012
13
0
10,510


I checked the user manual, and every reference to those is VCCSA/IO, never separately, even though the BIOS has them separate in different places. I can only assume their voltages are linked.
 
Upvote 0 Downvote
S

sebzag

Honorable
May 29, 2012
13
0
10,510


Does that make it more risky then to up that clock? Also, since PCH Voltage and PCH PLL Voltage are always in sync with VCCSA/IO, does it stand to reason that I should match all their clocks?
 
Upvote 0 Downvote
S

sebzag

Honorable
May 29, 2012
13
0
10,510
I'm using Sapphire Trixx Utility for the overclocking and it appears I only have to input the offset value to what I want to adjust the stock voltage to (e.g. an input of 200 mV for VDDC Offset results in the VDDC Offset in GPU-Z to go from 1.1v stock to 1.3v). But when I run HWiNFO64 in the background on sensor mode, it still shows a fixed voltage of 1.1v. Although there is also another sensor in the program that is detected after running a game, named VRM Voltage, which shows minor voltage fluctuations from 0 to 0.3-ish.

Does the gpu vddc offset on this card, or this series of cards, really work as it appears to work? Does the card generally work at 1.1v and dynamically ramp up the voltage temporarily when it needs, to a voltage limit determined by VDDC Offset?
 
Upvote 0 Downvote
S

sebzag

Honorable
May 29, 2012
13
0
10,510
I discovered that it is always one particular file that is at fault, "amdkmdap", which appears to be some kind of legacy driver. I wonder if it's really necessary for my card to run.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom