Overclock.net › Forums › AMD › AMD Motherboards › MSI 990FXA-GD80 V2 vCore Droop
New Posts  All Forums:Forum Nav:

MSI 990FXA-GD80 V2 vCore Droop

post #1 of 7
Thread Starter 
Does anyone have any experience using an MSI 990FXA-GD80 or GD80 V2? From what I understand the V2 is just used to indicate that the board ships with a particular BIOS revision instead of being a different model, so owners of either should be applicable.

In any case, my observation so far in using this motherboard is that vCore isn't regulated all that well. Below is a graph going from power on to Cinebench sampled 5 times per second. I've omitted the initial vCore ramp-up until it passed 1V so as to keep the chart detailed. Three things stand out to me based on my experiences, not all of which are derived from the chart below.
  1. The board droops as much as about 50mV from idle voltage under load with my chip as it is configured (4.3 GHz, 1.39V). If you overclock or underclock from where I am set to the droop may be better or worse.
  2. The board takes a long time after power-on to actually make it to its target. The BIOS setting for the below run is 1.39V. When I measured vCore again an hour later, it was finally up to 1.4V at idle.
  3. Once the target is met, the board overshoots by about 10-15mV. Ie if you set 1.40V it will idle at 1.41 to 1.415V.

Are these points in line with what other owners are seeing?

Click for Full Size
990fxagd80v2_droop.png
post #2 of 7
Thread Starter 
It looks like this board just kind of sucks. It isn't even stable at stock.
post #3 of 7
My board seems to always run at least 0.04 volts lower than what I set it to, and under a load it drops even further.

I have mine set at 4440MHz at 1.393 volts

Under load I have seen it drop to 1.29 volts

BUT even with that said I have run occt a couple times for about 10 minutes(plus other benchmarks) at a time, have been running at this setting for the last week, and I have had no errors or problems.

Ive been told its because of the load line calibration, but I do not think this board has that setting.

I do believe the cpu pll voltage is supposed to have something to do with how the cpu voltage is regulated, but I have no idea how.
My Computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Amd FX 6300 MSI 990FXA GD80v2 MSI Cyclone GTX 460 Corsair Vengeance  
Hard DriveCoolingOSMonitor
Western Digital Black Coolermaster 212 Evo Windows 7 Ultimate 64 bit Nec 1280x1024 tft LCD 
KeyboardPowerCaseMouse
HP PS/2 Antec Earthwatts 650 SilverStone mondo mini server tower Corsair Vengeance M90 
Audio
On board realteck controller 
  hide details  
Reply
My Computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Amd FX 6300 MSI 990FXA GD80v2 MSI Cyclone GTX 460 Corsair Vengeance  
Hard DriveCoolingOSMonitor
Western Digital Black Coolermaster 212 Evo Windows 7 Ultimate 64 bit Nec 1280x1024 tft LCD 
KeyboardPowerCaseMouse
HP PS/2 Antec Earthwatts 650 SilverStone mondo mini server tower Corsair Vengeance M90 
Audio
On board realteck controller 
  hide details  
Reply
post #4 of 7
Quote:
Originally Posted by Particle View Post

It looks like this board just kind of sucks. It isn't even stable at stock.

No, it's a very good motherboard - I get better clocks out of my FX-8350 with it than I do my ASUS CHV-z motherboard . Like any piece of equipment, you have to understand it in order to get the most out of it.

The GD-80 V2 has no LLC , which isn't really a big deal if you take the time to understand the vdroop that it has at a given speed and load.

Most of them will reach a maximum droop of .07 volts when powering an 8 core FX chip at 4.5 ghz + . When it reaches that maximum droop, it doesn't drop below that voltage unless there are problems elsewhere, psu or vrm cooling. The variances in voltage are from less cpu load that allow it to trend upwards towards the value you have it set to.

It takes very little air movement to cool the VRMs down a huge amount, just make sure you have good air movement across them .

All you really have to do is compensate for Vdroop manually in your settings in control center. In my case I can run 5 Ghz IBT stable at 1.53 volts loaded, if you factor in the Vdroop while setting it up, you will need to add the .07 so the setting will be 1.6 . This scares some people , but the only time it sees that much voltage is when idling and if you have good cooling it doesn't seem to hurt a thing. Also if you enable CNQ it will only raise the voltage to that level when necessary.
ASUS, MSI , GIGABYTE it doesn't matter what brand motherboard you have, the chip is going to need whatever voltage it needs to be stable at a given clockspeed. Boards with LLC add voltage automatically, basically you are doing the same thing by compensating for vdroop manually.

The best tool I have found for helping to understand V-droop is OCCT and the graphs it produces , give it a go and tell me what you find out smile.gif
Ryzen Shine!
(14 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 1800X @ 4125mhz 1.432 Volts MSI X370 Titanium   Fury  G.SKILL TridentZ Series 32GB (4 x 8GB) 288-Pin... 
Hard DriveOptical DriveCoolingOS
Samsung 850 pro Hp 1260 I liquid unobtanium Koolance 480mm radiator, 39... Win 7 HP/Winspy 10 64bit 
MonitorKeyboardPowerCase
24" hp @ 1900x1200 Logitech G19 PC power and cooling 910 watt silencer Thermaltake P5 
MouseMouse Pad
Logitech MX 518 fUnc industries 
  hide details  
Reply
Ryzen Shine!
(14 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 1800X @ 4125mhz 1.432 Volts MSI X370 Titanium   Fury  G.SKILL TridentZ Series 32GB (4 x 8GB) 288-Pin... 
Hard DriveOptical DriveCoolingOS
Samsung 850 pro Hp 1260 I liquid unobtanium Koolance 480mm radiator, 39... Win 7 HP/Winspy 10 64bit 
MonitorKeyboardPowerCase
24" hp @ 1900x1200 Logitech G19 PC power and cooling 910 watt silencer Thermaltake P5 
MouseMouse Pad
Logitech MX 518 fUnc industries 
  hide details  
Reply
post #5 of 7
what he said ^^^

only problem I have had so far is that I cant overclock my corsair memory, otherwise windows will start allocating 4GB of it to Hardware Reserved. I haven't really figured out whats wrong but I also don't really need to overclock my ram -_-

one other thing i noticed is that the north bridge multiplier will crash at x13 and over, but I have managed to use the FSB frequency to get it up to 2800MHz
My Computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Amd FX 6300 MSI 990FXA GD80v2 MSI Cyclone GTX 460 Corsair Vengeance  
Hard DriveCoolingOSMonitor
Western Digital Black Coolermaster 212 Evo Windows 7 Ultimate 64 bit Nec 1280x1024 tft LCD 
KeyboardPowerCaseMouse
HP PS/2 Antec Earthwatts 650 SilverStone mondo mini server tower Corsair Vengeance M90 
Audio
On board realteck controller 
  hide details  
Reply
My Computer
(13 items)
 
  
CPUMotherboardGraphicsRAM
Amd FX 6300 MSI 990FXA GD80v2 MSI Cyclone GTX 460 Corsair Vengeance  
Hard DriveCoolingOSMonitor
Western Digital Black Coolermaster 212 Evo Windows 7 Ultimate 64 bit Nec 1280x1024 tft LCD 
KeyboardPowerCaseMouse
HP PS/2 Antec Earthwatts 650 SilverStone mondo mini server tower Corsair Vengeance M90 
Audio
On board realteck controller 
  hide details  
Reply
post #6 of 7
Quote:
Originally Posted by jonpad01 View Post

what he said ^^^

only problem I have had so far is that I cant overclock my corsair memory, otherwise windows will start allocating 4GB of it to Hardware Reserved. I haven't really figured out whats wrong but I also don't really need to overclock my ram -_-

one other thing i noticed is that the north bridge multiplier will crash at x13 and over, but I have managed to use the FSB frequency to get it up to 2800MHz
It's important to note that the default voltages are also very low for cpu-nb and HT link, don't be afraid to bump them up a bit.
My CHV-z pumps 1.4 volts into the cpu-nb compared to 1.2 for the gd-80 and it can boost that with llc settings.
I don't know if I can get my 2400 mhz ram to run that fast on the GD-80 but it will on the CHV-z. However it doesn't really make things that much better. If you can get cl 9 at 1866 and above you are just as well off , in most things.
Best I have done is about 2350 mhz on the gd 80 for ram clock.
I really like the gd-80 smile.gif
'
Ryzen Shine!
(14 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 1800X @ 4125mhz 1.432 Volts MSI X370 Titanium   Fury  G.SKILL TridentZ Series 32GB (4 x 8GB) 288-Pin... 
Hard DriveOptical DriveCoolingOS
Samsung 850 pro Hp 1260 I liquid unobtanium Koolance 480mm radiator, 39... Win 7 HP/Winspy 10 64bit 
MonitorKeyboardPowerCase
24" hp @ 1900x1200 Logitech G19 PC power and cooling 910 watt silencer Thermaltake P5 
MouseMouse Pad
Logitech MX 518 fUnc industries 
  hide details  
Reply
Ryzen Shine!
(14 items)
 
  
CPUMotherboardGraphicsRAM
Ryzen 1800X @ 4125mhz 1.432 Volts MSI X370 Titanium   Fury  G.SKILL TridentZ Series 32GB (4 x 8GB) 288-Pin... 
Hard DriveOptical DriveCoolingOS
Samsung 850 pro Hp 1260 I liquid unobtanium Koolance 480mm radiator, 39... Win 7 HP/Winspy 10 64bit 
MonitorKeyboardPowerCase
24" hp @ 1900x1200 Logitech G19 PC power and cooling 910 watt silencer Thermaltake P5 
MouseMouse Pad
Logitech MX 518 fUnc industries 
  hide details  
Reply
post #7 of 7
It's not perfect, but overall it's a really good board. I really like mine. I used it in the recent Multithreaded Mayhem contest with a 1045T and it did really well. (in the 6 thread category)

I have not noticed too horrid volt fluctuation, but when I get my rig back together I can contribute some hard figures.
Alpha
(9 items)
 
Beta
(11 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II 1045T MSI 990FXA-GD80v2 XFX Radeon HD 6770 Samsung 
Hard DriveOptical DriveCoolingOS
Corsair Force3 LiteOn Xigmatek Gaia Win7 
MonitorPowerCase
Acer H233H Rosewill Hive 750 DIYpc Alpha GT3 
  hide details  
Reply
Alpha
(9 items)
 
Beta
(11 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II 1045T MSI 990FXA-GD80v2 XFX Radeon HD 6770 Samsung 
Hard DriveOptical DriveCoolingOS
Corsair Force3 LiteOn Xigmatek Gaia Win7 
MonitorPowerCase
Acer H233H Rosewill Hive 750 DIYpc Alpha GT3 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD Motherboards
Overclock.net › Forums › AMD › AMD Motherboards › MSI 990FXA-GD80 V2 vCore Droop