Overclock.net › Forums › Graphics Cards › NVIDIA › Is Flashing Nvidia BIOS safe?
New Posts  All Forums:Forum Nav:

Is Flashing Nvidia BIOS safe?

post #1 of 6
Thread Starter 
I've never overclocked a Nvidia card through flashing the BIOS. I've read some stuff saying it's dangerous yet others say it's perfectly safe when you do it properly.

I ask this because, I'm currently running 2xSLI with BFG 275 OCXs. I wanted to give 3xSLI a shot but I'm not able to find a BFG 275 OCX for sale (aside from Amazon.com's retarded pricing system).

However, I AM able to find a BFG 275 OC, which is virtually the same as the OCX with less of an out-of-box overclocking. I know that, in SLI, the fastest cards will run at the speeds of the slowest card.

Can I just overclock the 275 OC to the speeds of the OCX, and voi-la... 3xSLI?

Edit: The OC version runs at 648 Core Clock (with a few other minor tweaks)
Edit: The OCX version runs at 709 Core Clock (with a few other corresponding tweaks)
    
CPUMotherboardGraphicsRAM
AMD X4 955 B.E. 3.2GHz (@ 3.5 aircooled) MSI NF980-G65 nForce 980a SLI BFG GeForce 275 OCX x2 (SLI) OCZ Gold AMD Edition 8GB2 DDR3 1600 
Hard DriveOSMonitorPower
2x 300g Velociraptor (Raid 0) Win7 64bit Dual Samsung BX2331 Antec 1200 Modular PS 
Case
Coolermaster HAF 932 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD X4 955 B.E. 3.2GHz (@ 3.5 aircooled) MSI NF980-G65 nForce 980a SLI BFG GeForce 275 OCX x2 (SLI) OCZ Gold AMD Edition 8GB2 DDR3 1600 
Hard DriveOSMonitorPower
2x 300g Velociraptor (Raid 0) Win7 64bit Dual Samsung BX2331 Antec 1200 Modular PS 
Case
Coolermaster HAF 932 
  hide details  
Reply
post #2 of 6
If you have it overclocked in Afterburner, it will automatically overclock it to the settings of your other cards. - Yes flashing a Bvidia card is relatively safe, especially since you have other cards and wouldn't need to "blind flash" it. I've flashed several Nvidia cards successfully (unlocking 465's, 8800's to 9800's etc.) Just follow the instructions carefully and you will be fine.

If you wanted to, you could just save the bios of the other BFG cards and flash it onto the new card and have the same stock settings on all, though no guarantee that they will all overclock the same (which is the risk inherent in running multiple overclocked cards)
Edited by appleg33k85 - 4/18/11 at 12:00pm
The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
  hide details  
Reply
The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
  hide details  
Reply
post #3 of 6
Thread Starter 
Quote:
Originally Posted by appleg33k85 View Post
If you have it overclocked in Afterburner, it will automatically overclock it to the settings of your other cards. - Yes flashing a Bvidia card is relatively safe, especially since you have other cards and wouldn't need to "blind flash" it. I've flashed several Nvidia cards successfully (unlocking 465's, 8800's to 9800's etc.) Just follow the instructions carefully and you will be fine.

If you wanted to, you could just save the bios of the other BFG cards and flash it onto the new card and have the same stock settings on all, though no guarantee that they will all overclock the same (which is the risk inherent in running multiple overclocked cards)
That's exactly what I planned to do. I'm just going to copy the BIOS off one and put it on the third card. Hopefully it goes well, wish me luck.

Thanks
    
CPUMotherboardGraphicsRAM
AMD X4 955 B.E. 3.2GHz (@ 3.5 aircooled) MSI NF980-G65 nForce 980a SLI BFG GeForce 275 OCX x2 (SLI) OCZ Gold AMD Edition 8GB2 DDR3 1600 
Hard DriveOSMonitorPower
2x 300g Velociraptor (Raid 0) Win7 64bit Dual Samsung BX2331 Antec 1200 Modular PS 
Case
Coolermaster HAF 932 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD X4 955 B.E. 3.2GHz (@ 3.5 aircooled) MSI NF980-G65 nForce 980a SLI BFG GeForce 275 OCX x2 (SLI) OCZ Gold AMD Edition 8GB2 DDR3 1600 
Hard DriveOSMonitorPower
2x 300g Velociraptor (Raid 0) Win7 64bit Dual Samsung BX2331 Antec 1200 Modular PS 
Case
Coolermaster HAF 932 
  hide details  
Reply
post #4 of 6
It's completely safe as long as you know what you're doing. It's not a tough job to learn either. I would manually test each card first to see what the avg. stable clock of each is and flash all 3 cards to the lowest stable result. A bit more work but higher performance in the end.
post #5 of 6
It'll actually work perfect w/o your even having to do anything.

In theory, operation of the SLI drivers were recently changed so that if you have one card at (say) 600MHz and the other one in SLI at 700MHz, your rig will perform like you had 2 @650MHz rather than 2@600MHz (which is for sure how it used to work). I've not tested to see if this 'Asynchronous SLI' functionality is actually working though.

Regardless if it were me I'd do what you're talking about ... just flash them all to the same bios so they all have the same clocks even w/o using an OC program like AB. You should probably test the OC that's going to be applied to the new card though just to make sure it's stable at that speed. I'm sure it will be, but just to be safe

And bios flashing ... it's 99% 'safe', at least in the sense that it's totally reversible ... just flash back to the old bios. Worst case you muck it up so bad that the card won't provide an image but in that case you just make sure to connect your monitor to a working card and flash it back (with nvflash you can choose which installed GPU you want to apply the flash to).

Since BFG doesn't exist, you won't have a warranty anyways, so the 1% of the 'unsafeness' involved in a bios flash doesn't apply to your case anyways.
    
CPUMotherboardGraphicsRAM
xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
Hard DriveOptical DriveCoolingOS
hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
MonitorPowerCaseAudio
asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
xeon X5675 6-core @ 4.1ghz (1.29v, 20x205 +ht ) rampage iii extreme msi rx470 gaming X (the $159 budget king) 3 x 2gb corsair xms3 pc12800 (9-9-9-24-1T@1600MHz) 
Hard DriveOptical DriveCoolingOS
hynix 250gb ssd (boot), 2tb deskstar (apps),1tb... plextor px-712sa - still the best optical drive... corsair h8o v2 aio W10 home 
MonitorPowerCaseAudio
asus vw266h 25.5" (1920x1200) abs sl (enermax revolution) * single 70A rail 850w silverstone rv-03 XFi Titanium 
  hide details  
Reply
post #6 of 6
Thread Starter 
Quote:
Originally Posted by brettjv View Post
It'll actually work perfect w/o your even having to do anything.

In theory, operation of the SLI drivers were recently changed so that if you have one card at (say) 600MHz and the other one in SLI at 700MHz, your rig will perform like you had 2 @650MHz rather than 2@600MHz (which is for sure how it used to work). I've not tested to see if this 'Asynchronous SLI' functionality is actually working though.

Regardless if it were me I'd do what you're talking about ... just flash them all to the same bios so they all have the same clocks even w/o using an OC program like AB. You should probably test the OC that's going to be applied to the new card though just to make sure it's stable at that speed. I'm sure it will be, but just to be safe

And bios flashing ... it's 99% 'safe', at least in the sense that it's totally reversible ... just flash back to the old bios. Worst case you muck it up so bad that the card won't provide an image but in that case you just make sure to connect your monitor to a working card and flash it back (with nvflash you can choose which installed GPU you want to apply the flash to).

Since BFG doesn't exist, you won't have a warranty anyways, so the 1% of the 'unsafeness' involved in a bios flash doesn't apply to your case anyways.
If I brick the card, oh well... It's more or less an experiment. And if things go REALLY wrong, it's just more of a reason to upgrade.
    
CPUMotherboardGraphicsRAM
AMD X4 955 B.E. 3.2GHz (@ 3.5 aircooled) MSI NF980-G65 nForce 980a SLI BFG GeForce 275 OCX x2 (SLI) OCZ Gold AMD Edition 8GB2 DDR3 1600 
Hard DriveOSMonitorPower
2x 300g Velociraptor (Raid 0) Win7 64bit Dual Samsung BX2331 Antec 1200 Modular PS 
Case
Coolermaster HAF 932 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
AMD X4 955 B.E. 3.2GHz (@ 3.5 aircooled) MSI NF980-G65 nForce 980a SLI BFG GeForce 275 OCX x2 (SLI) OCZ Gold AMD Edition 8GB2 DDR3 1600 
Hard DriveOSMonitorPower
2x 300g Velociraptor (Raid 0) Win7 64bit Dual Samsung BX2331 Antec 1200 Modular PS 
Case
Coolermaster HAF 932 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: NVIDIA
Overclock.net › Forums › Graphics Cards › NVIDIA › Is Flashing Nvidia BIOS safe?