MSI HD7950 TF3, No voltage in MSI AB

[ChristTheGreat]

Hi guys,

I have been able to overclock my HD7950 from 960/1250 to 1150/1350. Poor ram overclock i know more was making BOINC Crashing the computer (I saw a test, hardware.fr getting it to 1700 )

So Before i was able to see the vGPU. Now MSI AB, after a reinstall, and modified CFG, still cannot get the vGPU either modifying it, maybe it's lock but at least, I should see the monitoring.

Here's what I modified:

UnlockVoltageControl = 1
UnlockVoltageMonitoring = 1
UnofficialOverclockingEULA = 1
UnofficialOverclockingMode = 1

I was trying to see my VGPU from MSI AB as GPU-Z see VDDC at 1.232v at idle (500/1350) but when I go in FurMark, it drop to like 1.1*.

Any one knows why? ANy help is appreciate

Thanks


BTW, just made a test with overclocking, idle with CPU idle, UPS show 170w, running FurMark, goes to 455-480w, +/- 300w on full load at the wall, is it good?

 

[RCoon]

Use Sapphire Trixx instead and disable ULPS. MSI provides no power options for me besides percentage, but Trixx allows everything.

 

[ChristTheGreat]

Thanks for the reply.

So Disabled ULPS, install trixx, and yeah, I saw the voltage (1.25v. Funniest is that the GPU always drop to 1.12-1.13 under load. Tested furMark, 85C, system crash (while all games never crashed). Will have to try at stock clocks.

fan on auto, idle 52C to 85C in a 25C room. I think when I'll move (27 days), I'll remove the card heatsink and change thermal paste/thermal pad for the ram. Don't have too much time for this now.

By the what size should be the thermal pad on VGA? depends on the cooler?


Thanks again

 

[d1nky]

sounds like you got elpida ram, theyre voltage and overclockability is low, well compared to Hynix which is 1.6v stock and can get up to 1800-1900 mem

my thermal pads are about 2-3mm thick. but they didn't break at all.

you should also use a custom fan profile when overclocking to keep temps down

and that vdroop is fine, believe me!

 

[Frogger]

Your card should be supported by the latest AB 3.0.0 beta 9. These cards are infamous for their Vdroop nothing to worry about. if you edit the cards Profile in crogram files x86\ msi afterburner\Profiles With these lines
[Settings]
VDDC_CHL8228_VIDReadback = 0
MVDDC_CHL8228_VIDReadback = 0
you should see the real voltage

 

[d1nky]

the ven file mod ^^^

my favourite. anyone reading this and think they see real voltage and its same as you set in oc software, youre wrong, that's target volts. ^^ gives realtime volts!

 

[ChristTheGreat]

Well now from MSI AB, on V3, I have access to voltage control but not monitoring haha xD

I can also Controle voltage for ram, but I won't touch this I guess

 

[ChristTheGreat]

sounds like you got elpida ram, theyre voltage and overclockability is low, well compared to Hynix which is 1.6v stock and can get up to 1800-1900 mem

my thermal pads are about 2-3mm thick. but they didn't break at all.

you should also use a custom fan profile when overclocking to keep temps down

and that vdroop is fine, believe me!

That is correct my ram is at 1.55v and I do think it is elpida. I will remove my heatsink and look. I will change thermal paste and thermal pad as they are not well placed:

I will order a couple one..

and there is one memory module that is not cooled.. I didn't saw that xD, thanks MSI!

 

[ChristTheGreat]

Well, I have taken out my cooler on my card. What I see from the ram pad, is that they put a full piece so the last one touch half way (since ram are not all equal)

Found out also that I have hynix ram. MSI afterburner set it at 1.55v.

So I changed the thermal paste with some zalman STG2. Hard to say right now how effective, since it is 27C in the room :/