MPT - overvolt 6800XT to 1.2v is it safe ?

[Bernec]

Hello !

I'm using the VMIN DEPENDANT variable in MPT to overvolt my 6800XT to 1.175V / 1.2V. Stock voltage is 1.15V of course. Is it safe to use 24/7 for gaming ? I get around 2700-2750MHz with 1.2V and with stock 1.15V I only can get 2550-2575 Mhz stable. It's a little improvement for me and I would hate losing it.

Since 6900XT is at 1.175V and 6950XT (or the XTX/H) is at 1.2V can I run it also ?

I have a PowerColor Red Devil card that handles the temperature very well. Even at 1.225V the hotspot is well bellow 95C at around 90C and the GPU Temp is very good at 70C.

I know this exploits a bug so I can set this voltage but how safe it ? Is anyone using it 24/7 ???

Thanks !

 

[ir_cow]

So your bypassing the driver lock out of 1.2V? You shouldn't be able to set it higher without driver mods. Generally these voltage limits are set for a reason.

 

[Bernec]

So your bypassing the driver lock out of 1.2V? You shouldn't be able to set it higher without driver mods. Generally these voltage limits are set for a reason.

I'm looking for other people opinions and especially some that use higher volts on these cards. I'm well aware they are there for a reason. Not be able to overlock higher is one of them Like the limits in memory overclocking on so on. There are limitations to keep the card tiers separated. So how bad can 1.2V be for a card running at 1.15V ? and has siblings that run at 1.175 and 1.2 ?

Lets think about a CPU (some people will says its a different thing) but people pump 0.2-0.5V in the easily and they last for a long time.

 

[ir_cow]

AMD locked the 6800 XT to 2.8 GHz and 1.2V in the drivers. Bypass the voltage, you still won't exceed 2.8 GHz.

 

[Dr. Dro]

Out-of-band overclocking with MPT generally is not safe, and I highly recommend against using it if you aren't absolutely sure of what you're doing and that you have specialized cooling capable of handling the excess thermal load. I killed my original GTX Titan the exact same way many years ago. Expensive mistake... don't repeat it.

 

[Assimilator]

Hello !

I'm using the VMIN DEPENDANT variable in MPT to overvolt my 6800XT to 1.175V / 1.2V. Stock voltage is 1.15V of course. Is it safe to use 24/7 for gaming ? I get around 2700-2750MHz with 1.2V and with stock 1.15V I only can get 2550-2575 Mhz stable. It's a little improvement for me and I would hate losing it.

Since 6900XT is at 1.175V and 6950XT (or the XTX/H) is at 1.2V can I run it also ?

I have a PowerColor Red Devil card that handles the temperature very well. Even at 1.225V the hotspot is well bellow 95C at around 90C and the GPU Temp is very good at 70C.

I know this exploits a bug so I can set this voltage but how safe it ? Is anyone using it 24/7 ???

Thanks !

If it was safe the driver would let you do it. Just because the temperature is good doesn't mean you aren't frying the core.

 

[mb194dc]

Will depend on the power delivery circuitry on the card? How many Watts does it pull at 2.7ghz, 1,2v ?

I have the red dragon 6800xt and 5600xt, latter is bios molded to run at 2.1ghz and didn't have a problem, yet..

Running above spec is always a risk, especially power spec.

 

[P4-630]

bios molded

Modded probably..

 

[mb194dc]

Modded probably..

Yes tablet keyboard autocorrect strikes again...

 

[Bernec]

Will depend on the power delivery circuitry on the card? How many Watts does it pull at 2.7ghz, 1,2v ?

I have the red dragon 6800xt and 5600xt, latter is bios molded to run at 2.1ghz and didn't have a problem, yet..

Running above spec is always a risk, especially power spec.

I wasnt testing for the limit ... I've seen above 400W but I dont need it. I just need the higher clocks. Even if I cap at 380-400W the power consumption from MPT I just want higher volts (1.2) to be able to sustain 2650-2700 MHz in games without crashing.

Frying the core ? Isn't the same for 6800XT/6900/6950 and so on ? do you think the manufacturing is different ? why 6900 can run at 1.175 without frying ?

So nobody uses higher volts for these 6800XTs ? If you get a bad bin thats it ? I just wanted 2600-2700MHz in game from this card.

 

[ir_cow]

If it was safe the driver would let you do it. Just because the temperature is good doesn't mean you aren't frying the core.

I agree. AMD wouldn't allow higher if it wasn't somewhat safe. Put it into "Rage" mode and it will go to 1.2v automatically.

 

[P4-630]

I'd say, put into "Party" mode...

GL.

 

[mb194dc]

I wasnt testing for the limit ... I've seen above 400W but I dont need it. I just need the higher clocks. Even if I cap at 380-400W the power consumption from MPT I just want higher volts (1.2) to be able to sustain 2650-2700 MHz in games without crashing.

Frying the core ? Isn't the same for 6800XT/6900/6950 and so on ? do you think the manufacturing is different ? why 6900 can run at 1.175 without frying ?

So nobody uses higher volts for these 6800XTs ? If you get a bad bin thats it ? I just wanted 2600-2700MHz in game from this card.

8 pin power connector are 150w each, plus 75w from the board. 6900 may have higher design tolerance for power. You run out if spec you risk something blowing or melting.

Be more concerned about blowing power delivery out than damaging the core itself.

 

[ir_cow]

8 pin power connector are 150w each, plus 75w from the board. 6900 may have higher design tolerance for power. You run out if spec you risk something blowing or melting.

Be more concerned about blowing power delivery out than damaging the core itself.

These connectors can handle way more. Like 360 watts a piece if you have 16awg wire for 10A per 12v pin. If you have a really cheap PSU, this is a factor to consider. Going over officially specs leads to nothing but trouble if you aren't smart about it.

 

[Bernec]

588W is the limit for 2+6x2 PCIE. I'm just asking some opinions about 1.175 and 1.200 V on the GPU with power capped at 350W.

How come Rage mode is 1.2V ? I didn't know that ... can you share a source ?

 

[ir_cow]

How come Rage mode is 1.2V ? I didn't know that ... can you share a source ?

To clarify, "Rage" mode moves the voltage slider automatically to the max the drivers allows. This is 1.2V. IF the card reaches the power limit first or has a clock freq that doesn't require that much voltage, it will not use all of the available 1.2 V. All Rage mode does is max out the voltage and power limit slider instead of you having to manually do that. The rest is the normal auto boosting.

Source: Me. I reviewed the RX 6000 series (multiple cards) for a different website before coming to TPU.

 

[damric]

This is a pointless endeavor unless you are willing to sacrifice the card for cups on hwbot.

If you need more 3D performance, use an upscaler. Most modern games have them built-in. The AMD driver has one that also works with a lot of games. If those two don't work then there is the $5 lossless scaling app on steam.

But if this is purely for benching/hwbot, well I would consult with your team members. There is plenty of information out there as far as MPT, and whole threads for overclocking the 6000 series out of spec. But this isn't something you run 24/7 and without exotic cooling. I see overclockers saying it pulls 600w or so when it's pushed to the silicon limit and it is very difficult to remove that much heat from such small transistors fast enough that you don't damage it.

 

[Bernec]

To clarify, "Rage" mode moves the voltage slider automatically to the max the drivers allows. This is 1.2V. IF the card reaches the power limit first or has a clock freq that doesn't require that much voltage, it will not use all of the available 1.2 V. All Rage mode does is max out the voltage and power limit slider instead of you having to manually do that. The rest is the normal auto boosting.

Source: Me. I reviewed the RX 6000 series (multiple cards) for a different website before coming to TPU.

I honestly dont think any 6800XT has 1.2 V available. The max voltage on 6800XT is 1.15 V

6900XT has 1.175 V max voltage and the liquid cooled models have 1.2V (some).

If I'm totally wrong please show me review where 6800XT goes to 1.2V and has slider at that mark.

For the sake of the argument I will monitor using RivaTuner and HW to check if in Rage mode goes to 1.2V but I highly doubt it.

 

[ir_cow]

Hmm.. maybe AMD changed this? Or it was the press drivers I had. I don't have the 6800 XT anymore to check. @Toothless what does your 6800 XT go up to?

I did find a screenshot for a 6700 XT that has 1.2V.

 

[kapone32]

I wasnt testing for the limit ... I've seen above 400W but I dont need it. I just need the higher clocks. Even if I cap at 380-400W the power consumption from MPT I just want higher volts (1.2) to be able to sustain 2650-2700 MHz in games without crashing.

Frying the core ? Isn't the same for 6800XT/6900/6950 and so on ? do you think the manufacturing is different ? why 6900 can run at 1.175 without frying ?

So nobody uses higher volts for these 6800XTs ? If you get a bad bin thats it ? I just wanted 2600-2700MHz in game from this card.

400W is absolutely insane for a 6800XT. The 6800XT is not a 6900Xt and certainly not a 6950XT. With the 6x50 series the clocks are even higher. Keep in mind that generally the 6900XT and 6950XT have 3 8 pin power connectors as well.

 

[seanmack]

Hello !

I'm using the VMIN DEPENDANT variable in MPT to overvolt my 6800XT to 1.175V / 1.2V. Stock voltage is 1.15V of course. Is it safe to use 24/7 for gaming ? I get around 2700-2750MHz with 1.2V and with stock 1.15V I only can get 2550-2575 Mhz stable. It's a little improvement for me and I would hate losing it.

Since 6900XT is at 1.175V and 6950XT (or the XTX/H) is at 1.2V can I run it also ?

I have a PowerColor Red Devil card that handles the temperature very well. Even at 1.225V the hotspot is well bellow 95C at around 90C and the GPU Temp is very good at 70C.

I know this exploits a bug so I can set this voltage but how safe it ? Is anyone using it 24/7 ???

Thanks !

Hi, i've run 1.2 volts on the card using MPT now for over 9 months - no issues. Just watch your junction temps. There's an in-depth guide on MPT over at HardwareLuxx. You'll find it here https://www.hardwareluxx.de/communi...verclocking-tutorial-6800-xt-6900-xt.1300245/

 

[Bernec]

Hmm.. maybe AMD changed this? Or it was the press drivers I had. I don't have the 6800 XT anymore to check. @Toothless what does your 6800 XT go up to?

I did find a screenshot for a 6700 XT that has 1.2V.
View attachment 271926

I have a physical card 6750XT in another computer and I can confirm that is 1.2V but that is ONLY for that card. The higher models have different voltages ...

Press drivers ? WTH is that supposed to mean do you know that means AMD is cheating on its users ? sending users lower voltage drivers ... I highly doubt this again !

400W is absolutely insane for a 6800XT. The 6800XT is not a 6900Xt and certainly not a 6950XT. With the 6x50 series the clocks are even higher. Keep in mind that generally the 6900XT and 6950XT have 3 8 pin power connectors as well.

The power is not that insane actually since it worked perfectly. The top performing 6800XT can reach above 300-350W with on problems.

You say its not the same yes it has 4608 shaders from 5120 that is the only difference. Lets think outside the box a little ? and also 6950XT what is it ? a miracle amongst us ? Its just an OCed 6900XT.

 

[kapone32]

I have a physical card 6750XT in another computer and I can confirm that is 1.2V but that is ONLY for that card. The higher models have different voltages ...

Press drivers ? WTH is that supposed to mean do you know that means AMD is cheating on its users ? sending users lower voltage drivers ... I highly doubt this again !


The power is not that insane actually since it worked perfectly. The top performing 6800XT can reach above 300-350W with on problems.

You say its not the same yes it has 4608 shaders from 5120 that is the only difference. Lets think outside the box a little ? and also 6950XT what is it ? a miracle amongst us ? Its just an OCed 6900XT.

I am not saying that it won't work and I know that drivers (some 3000 card launch) pushed the 6800XT to 330 Watts. With OC you can do 330 on any 6800XT but 400W means to mean that the propensity for stuttering, artifacts and other gremlins will occur much faster than using less power.

Newer Games will have that GPU at 99% for almost the entire time now too. As another has said Junction temp maintenance is important but absolutely needed as these cards can run along at 100+ C and you would never know unless you have monitoring software.

You are looking at a 6800XT in reverse because the performance between 245 Watts (current driver) and 300 Watts (2021 late) is nil. Efficiency is where the 6800XT shines in the high end and my card is faster today than it was before, using less power. The only thing that what you are doing would produce would be higher 3D Mark scores that Youtube have made seem more important than they actually are.

The 6950XT has faster Memory than the 6900. All 6X50 cards have higher clocks than their 6000 peers. Since it is the same chip how can it be better? Refinement. What is the highest clocking 6000 series card? The 6500XT 2983 MHZ? Was not that the last 6000 series card to launch? Yes.

Of course you spent YOUR money on the card so you are free to do with as you please. Good luck.

 

[Hofnaerrchen]

Keep in mind that generally the 6900XT and 6950XT have 3 8 pin power connectors as well.

6900XT cards having 3 8-pin connectors is complete overkill unless they are heavily OC'ed. I am running mine at -10% ppt and the performance loss to 115% ppt is approx. 5%. If you need more performance these days you are well advised to rather buy the next higher GPU instead of OC - the only good way to OC currently available GPUs is by applying a LNG or at least chilled water OC and applying that to a everything below the most expensive chip in the selected brand is wasted money - even waterblocks don't pay off performance wise. Cooling is a different story but performance: Buy the next higher GPU. Increasing voltage will only reduce lifetime - so it's also almost a no-brainer to skip it unless you don't care getting a new card every generation and lying to the buyers of your used card.

 

[ir_cow]

I have a physical card 6750XT in another computer and I can confirm that is 1.2V but that is ONLY for that card. The higher models have different voltages ...

Press drivers ? WTH is that supposed to mean do you know that means AMD is cheating on its users ? sending users lower voltage drivers ... I highly doubt this again !

Okay well you answered your own question. If you have a RX 6000 series card that has 1.2 V support, than 1.2 must be safe or AMD wouldn't have included it.

As for press-drivers conspiracy thing, it was just a thought of why mine has/had 1.2 as a option. You don't have an idea how things work in the background for a reviewers. We get new drivers, new vBIOS all the way up to launch. Some have bugs like say for example, more voltage or higher power limit, etc. I've received video cards and motherboards with engineering BIOS on them before. Someone forgot to flash it back before sending it out. If that is the case, the company in question will ask to use the newest non-bugged version for the review. But to end this, if the 6800 XT doesn't have 1.2 V support for retail, that is fine. I am wrong. The power limit, temp and freq limit in the drivers is just another hurdler to overcome. Set it to 1.2v with your software mod and call it a day.