Sapphire HD 7950 dualx oc boost not overclocking ..... I NEED HELP!!!!!!!!!

[Mohan2997]

MY sapphirea hd 7950 dual x driver crashes(very rare) even in its boost mode of 925mhz on core and 1250mhz on memory , If i increase my power slider to 10% then its normal in every game.if power slider is upto 20% card stays stable at (970/1300).It crashes even at 975 on core.I tried flashing many bios but no change.i tried increasing tdp to 200w from default 163w in bios but its of no use again it crashes .My MSI after burner is not allowing to change core voltage..........I tried r9 280 bios too.....but it crashes at same clocks..........I need help in overclocking my card.

MY Rig:
i3 4150 3.5 ghz
corsair vs 550w PSU(NEW)
1 TB HDD
GIGABYTE H81m-s Motherboard
sapphire HD 7950 dualx gpu

 

[Starcruiser]

1. Every card is different, and will get different results when overclocking. Just because someone else got the card over 1 GHz doesn't mean you can/will.
2. If you can't change the voltage then it's likely locked. Without modifying the vBIOS you can't change it. Refer here for more info on modding your vBIOS: http://www.overclock.net/t/1395490/ati-hd-7950-7970-bios-mod-thread
3. Don't use a vBIOS from a different card. That's just asking for an expensive paperweight.

 

[Mohan2997]

1. Every card is different, and will get different results when overclocking. Just because someone else got the card over 1 GHz doesn't mean you can/will.
2. If you can't change the voltage then it's likely locked. Without modifying the vBIOS you can't change it. Refer here for more info on modding your vBIOS: http://www.overclock.net/t/1395490/ati-hd-7950-7970-bios-mod-thread
3. Don't use a vBIOS from a different card. That's just asking for an expensive paperweight.

But my card goes only upto 1.081 volt (VDCC) in GPUZ.........does it have anything to do with it!!!!?

 

[Starcruiser]

That's a slightly above normal voltage for that card actually. It was probably set to that by the manufacturer when they did the factory overclock.
Hit the render test on the first page in GPU-Z and then check the voltage. My R9 only goes up to 1.16 volts under load.

 

[Mohan2997]

That's a slightly above normal voltage for that card actually. It was probably set to that by the manufacturer when they did the factory overclock.
Hit the render test on the first page in GPU-Z and then check the voltage. My R9 only goes up to 1.16 volts under load.[/quote

But,i read on forums ,that this card can go upto 1.2v with(1100/1500)............,I read some people got to 1200 on core

 

[Mohan2997]

That's a slightly above normal voltage for that card actually. It was probably set to that by the manufacturer when they did the factory overclock.
Hit the render test on the first page in GPU-Z and then check the voltage. My R9 only goes up to 1.16 volts under load.

But,i read on forums ,that this card can go upto 1.2v with(1100/1500)............,I read some people got to 1200 on core

 

[Starcruiser]

They probably had unlocked cards. Also, make sure you put some load on the card to check your actual max voltage. The render test I mentioned is useful for that. It's the "?" next to bus speed.

 

[Mohan2997]

They probably had unlocked cards. Also, make sure you put some load on the card to check your actual max voltage. The render test I mentioned is useful for that. It's the "?" next to bus speed.

What exactly should i see there!!?

 

[Starcruiser]

When you click the "?" and click start render test, it will open a window with a small 3D render that will put a small load on the card. With that still open check the sensors and that will show you the load voltage.

 

[Mohan2997]

When you click the "?" and click start render test, it will open a window with a small 3D render that will put a small load on the card. With that still open check the sensors and that will show you the load voltage.

Its showing 1.038v constant and peaked to 1.044v for fraction of a second..........but while playing witcher3 it stayed sometime at 1.068v(for few seconds)

 

[Starcruiser]

That's normal for your card. The 1.2 volts the people in that forum got were from increasing the voltage.
I maintain that your best bet for overclocking your most likely voltage locked card is modifying your own vBIOS.
Don't expect to get the exact same results as other people. Every card is different, even as much as 200 MHz potential.

If you give me your PCI ID I can see if I can find your vBIOS or an updated one. You can find it in: Device Manager > Display Adapters, right click, properties, > Details > Hardware IDs, it's the entire first line.

 

[Mohan2997]

That's normal for your card. The 1.2 volts the people in that forum got were from increasing the voltage.
I maintain that your best bet for overclocking your most likely voltage locked card is modifying your own vBIOS.
Don't expect to get the exact same results as other people. Every card is different, even as much as 200 MHz potential.

If you give me your PCI ID I can see if I can find your vBIOS or an updated one. You can find it in: Device Manager > Display Adapters, right click, properties, > Details > Hardware IDs, it's the entire first line.

PCI\VEN_1002&DEV_679A&SUBSYS_E249174B&REV_00
its first line present in hardware id's

 

[Starcruiser]

https://www.techpowerup.com/vgabios/149743/sapphire-hd7950-3072-131016
Using this vBIOS will allow for greater overclocking potential, up to 1200 MHz. It appears to have been pre-modified.
I must repeat however, your results can and will vary. I can't guarantee anything, but this is your best chance for overclock.
You can flash this using ATI Winflash. https://www.techpowerup.com/downloads/2531/atiflash-2-71

 

[Mohan2997]

https://www.techpowerup.com/vgabios/149743/sapphire-hd7950-3072-131016
Using this vBIOS will allow for greater overclocking potential, up to 1200 MHz. It appears to have been pre-modified.
I must repeat however, your results can and will vary. I can't guarantee anything, but this is your best chance for overclock.
You can flash this using ATI Winflash. https://www.techpowerup.com/downloads/2531/atiflash-2-71

its the default bios
brfore flashing a custom one..........but i'll give it a try

 

[Starcruiser]

I saw that the default vBIOS set a hard limit of 1100 MHz. This will allow you to go higher and changes the powertune settings.

 

[Mohan2997]

I saw that the default vBIOS set a hard limit of 1100 MHz. This will allow you to go higher and changes the powertune settings.

before i started flashing custom bios ........i have a limit of 1200mhz on core.......however it did not work i got same results as before............... I need a way to unlock voltage control in MSI afterburner(tried on sapphire trix ............voltage is locked)...............I did not understand the way u suggested me to unlock voltage control in 1st REPLY .....

 

[Starcruiser]

If the flashing was successful, do the render test again and check your voltages.
Use AMD Overdrive and Catalyst Control Center to increase your PowerTune settings. This is the limit on exactly how much power the card can use, increasing this is more beneficial than increasing the voltage.
http://www.tomshardware.com/reviews/radeon-r9-290x-hawaii-review,3650-5.html

 

[Mohan2997]

If the flashing was successful, do the render test again and check your voltages.
Use AMD Overdrive and Catalyst Control Center to increase your PowerTune settings. This is the limit on exactly how much power the card can use, increasing this is more beneficial than increasing the voltage.
http://www.tomshardware.com/reviews/radeon-r9-290x-hawaii-review,3650-5.html

I ran the test and.............voltage fluctuated between 1.05 ans 1.044 and finally stabilised at 1.044v.......is there a way of getting it to 1.1-1.2v!!!!!!?

 

[Starcruiser]

If you change the PowerTune settings, the voltage is linked to those settings usually.

 

[Mohan2997]

If you change the PowerTune settings, the voltage is linked to those settings usually.

 

[Mohan2997]

Hey....... I installed a older version of sapphire trixx(4.6.0) and it unlocked voltage control now i can go around 1100/1500 at 1.23v wierd thing is.... gpuz shows that.........its using only around 1.12v but if i decrease my voltage to 1.15v intixx it crashes even at 1000/1400 ...... ///anyway........ I oc'd my card