Overclock.net › Forums › Graphics Cards › AMD/ATI › 7950 Vapor X Voltage Locked?
New Posts  All Forums:Forum Nav:

7950 Vapor X Voltage Locked? - Page 77

post #761 of 1056
Quote:
Originally Posted by ryboto View Post

Can anyone comment on my post?

I am using the boost bios. Never really tried on the other. The theory is that the boost bios has a more aggressive fan profile and voltage. I don't have data to confirm either way. If you are setting voltages and fan profile manually, probably will not matter.
post #762 of 1056
Quote:
Originally Posted by bigsnyder View Post

I am using the boost bios. Never really tried on the other. The theory is that the boost bios has a more aggressive fan profile and voltage. I don't have data to confirm either way. If you are setting voltages and fan profile manually, probably will not matter.

I find that the boost BIOS doesn't OC as well because the vDroop is even worse. Pretty much Vapor-X on standard BIOS + 4.4.0b Trixx is about as good as it gets. I can get 1200/1600 stable whereas on Afterburner or other versions of Trixx with or without the Boost BIOS my max is around 1125/1475.
post #763 of 1056
Quote:
Originally Posted by bigsnyder View Post

I am using the boost bios. Never really tried on the other. The theory is that the boost bios has a more aggressive fan profile and voltage. I don't have data to confirm either way. If you are setting voltages and fan profile manually, probably will not matter.

I have been tinkering for hours with the 2 bios settings last night. There is a difference in behavior of the card. Here a short summary of my observation:

It all started that I suddenly got lower 3DMark scores than the day before (with no OC in Boost Bios). Found that under load the card does not keep the GPU Core **** steady. It was fluctuating between 500-950 all the time. After finding a thread on this on another site - Setting power control to +10 % in CCC solved the issue.

NOW: I got the card up to being really stable at 1100/1400, not touching the voltage.

In Bios 1: 1100/1400 is running perfectly with NO power adjustment in CCC, all temperatures under load around 55-65C
In Bios 2: I have to up the power for 1100/1400: need +15 % to keep GPU steady here. same temperatures.

Heaven benchmark gives me exactly the same results for both bios settings. Hence the conclusion: There is a difference between these 2 settings. The difference is not performance related though. Maybe fan speed? I haven't checked for that last night. Why would one setting need more power to do the same thing? So what does that power slider really do?

I got the 8/8 pin version and can confirm that with Trixx 4.6.0 VDDC CAN be adjusted. Haven't touched it yet though - mine is at 1250 out of the box - with the option to go up to 1350.
post #764 of 1056
Quote:
Originally Posted by nuthead53 View Post

Yup on +20 but that wouldn't have an affect on changing the voltage.

Using bios two, which I was previously able to change the vddc with. Not tried bios 1 but it should really work on both.

Tried Trixx 4.4b (I was the first person to post a link for it in this thread and confirm that the voltage wasn't locked) and 4.6.
Neither work anymore........

my voltage wouldn't change unless I set it to +20. doesn't matter how much over stock VDDC I select, if +20 isn't selected, it doesn't change under load. Only reason I asked.
mitx
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570K 4.5ghz ASRock Z77E-ITX Sapphire R9 290x Tri-X 1200/1500 Crucial Ballistix Tactical LP 2x8 GB 8-8-8-24-1T 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Pro 256gb Western Digital Velociraptor Western Digital WD15EARX Western Digital WD15EADS 
CoolingOSMonitorKeyboard
Silverstone NT06-Pro Windows 10 x64 LG 29UM67 Logitech G710+ 
PowerCaseMouseAudio
Silverstone SG08 600W PSU Silverstone SG08B Logitech G700 Pioneer SE-A1000 
  hide details  
Reply
mitx
(16 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570K 4.5ghz ASRock Z77E-ITX Sapphire R9 290x Tri-X 1200/1500 Crucial Ballistix Tactical LP 2x8 GB 8-8-8-24-1T 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Pro 256gb Western Digital Velociraptor Western Digital WD15EARX Western Digital WD15EADS 
CoolingOSMonitorKeyboard
Silverstone NT06-Pro Windows 10 x64 LG 29UM67 Logitech G710+ 
PowerCaseMouseAudio
Silverstone SG08 600W PSU Silverstone SG08B Logitech G700 Pioneer SE-A1000 
  hide details  
Reply
post #765 of 1056
Quote:
Originally Posted by ryboto View Post

my voltage wouldn't change unless I set it to +20. doesn't matter how much over stock VDDC I select, if +20 isn't selected, it doesn't change under load. Only reason I asked.

Ok... now that I have the thing a bit more overclocked - 1150/1500 in BIOS 2 I figured lets go try Bios 1 again.

Can't overclock that far at all in Bios 1 setting. Interestingly VDDC drops to almost 1.000 under load in Bios 1 even with TRIXX maxed out. I am starting to suspect that the 4.6.0 TRIXX slider is for show.

Went back to BIOS 2 and moved on to 3DMArk: Had to push Power Control to +20 to avoid the card to lower GPU clock. (In Heaven +12 was enuff). Seems the power option (in CCC) and on board BIOS switch are the only way to kinda control VDDC.

Not very scientific - but I am done - will run the card in BIOS 2 @ 1100/1375/+20 and not worry about it anymore. Not bad have a stock 7970 for the money of a 7950. Temperatures don't go above 62C in that setting. What an improvement from the dual 5870s I had before - which ran around 85C under load - and sounded like a hair drier.

Seems to me that the BOOST button is doing quite a few things on voltages, cause there is no difference visible in the GPUZ/TRIXX voltage data.
Edited by Phlego - 2/10/13 at 12:41pm
post #766 of 1056
I failed to flash a new bios on my non boost slot, I get no video when I turn the computer. How can I reflash the non-boost slot back to my backup?
post #767 of 1056
Quote:
Originally Posted by merkaloid View Post

I failed to flash a new bios on my non boost slot, I get no video when I turn the computer. How can I reflash the non-boost slot back to my backup?

Well you're supposed to save your original BIOS file before flashing. Then using that file flash the 1st BIOS back with that saved BIOS in DOS, not in Windows.
post #768 of 1056
Quote:
Originally Posted by stickg1 View Post

Well you're supposed to save your original BIOS file before flashing. Then using that file flash the 1st BIOS back with that saved BIOS in DOS, not in Windows.

I dont think you understood my post correctly, I do have a backup of the original and used ATIFLASH on a bootable usb. It failed and I want to restore that slot to the BIOS it had but I cant because I am blind on that slot.
post #769 of 1056
Quote:
Originally Posted by merkaloid View Post

I dont think you understood my post correctly, I do have a backup of the original and used ATIFLASH on a bootable usb. It failed and I want to restore that slot to the BIOS it had but I cant because I am blind on that slot.

Oh, well you need a 2nd GPU to output the video for you. That way you can get the display working and then you flash the BIOS of the 2nd (failed BIOS) card using the appropriate command in ATIFLASH.

http://www.overclock.net/a/how-to-fix-a-failed-gpu-bios-flash
post #770 of 1056
Quote:
Originally Posted by merkaloid View Post

I dont think you understood my post correctly, I do have a backup of the original and used ATIFLASH on a bootable usb. It failed and I want to restore that slot to the BIOS it had but I cant because I am blind on that slot.
Quote:
Originally Posted by stickg1 View Post

Oh, well you need a 2nd GPU to output the video for you. That way you can get the display working and then you flash the BIOS of the 2nd (failed BIOS) card using the appropriate command in ATIFLASH.

http://www.overclock.net/a/how-to-fix-a-failed-gpu-bios-flash

You can boot with your working BIOS and hotswitch to the other one with the button, then flash.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD/ATI
Overclock.net › Forums › Graphics Cards › AMD/ATI › 7950 Vapor X Voltage Locked?