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Asus MarsII Powerlimits/VGA Hotwire

ConkersGrillfor
Level 9
Asus MarsII Powerlimits/VGA Hotwire

Hey Guys
Maybe some of you can give me some further information on the overclocking/powerlimit of the Asus MarsII.
I was able to reach a core clockspeed of 950Mhz with an applied voltage of 1.21V. 😛
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The Goal would be to crack the 1Ghz barrier. :cool::o
But to achieve this, I would need a bit more voltage on the core, maybe something between 1.25V and 1.3V. Here's my problem, neither GPU Tweak nor any other overclocking utility let me set the voltage that high. Is there a powerlimitation? on the software-side? hardware limitation? :confused:
I read about VGA Hotwire, which would be possible to use on my R4E motherboard to power the card. It's easily to understand, where those connectors are on the motherboard, but where to connect those cables on an Asus MarsII? :confused::confused:
Frontside
Backside

Thanks in advance for any help. 🙂
Desktop: Xigmatek Elysium | Rampage IV Extreme | i7-3960X | G.Skill 32Gb DDR3 2133Mhz|fastest Asus MarsII on the planet:cool: core 950Mhz| Kingston HyperX SSD 240Gb + 300Gb Intel 300series SSD + Velociraptor 600Gb + 3TB HDD | Enermax Maxrevo 1500W| 3xDell U2412m |
Laptop: Samsung 940X3G | i7-4500U | 8Gb RAM | 256Gb SSD | 13.3" 3200x1800 |
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5 REPLIES 5

ConkersGrillfor
Level 9
@MarshallR@ASUS, @Mason@ASUS, @Raja@ASUS: Hey Asus guys
Are you able to give me some more information about this subject?
Desktop: Xigmatek Elysium | Rampage IV Extreme | i7-3960X | G.Skill 32Gb DDR3 2133Mhz|fastest Asus MarsII on the planet:cool: core 950Mhz| Kingston HyperX SSD 240Gb + 300Gb Intel 300series SSD + Velociraptor 600Gb + 3TB HDD | Enermax Maxrevo 1500W| 3xDell U2412m |
Laptop: Samsung 940X3G | i7-4500U | 8Gb RAM | 256Gb SSD | 13.3" 3200x1800 |

Hello ConkersGrillforce1337

I had that game conkers bad hair day for the Nintendo 64 system, you brought back some old gaming memories.

Nvidia has put a limit on the voltage that is why you can only take it so far. Also I'm sure you are aware, when overclocking your gtx 580 the shader clock speed has to be double that of what the core clock speed is.

The only way to get the voltage to go higher is to flash it with a bios that allows higher voltage which I would not recommend.

Arne_Saknussemm
Level 40
Yep Voltage is locked and on air that is a good thing...if you watercool fermi it responds well and increasing OC even at same volts is easy and even editing a BIOS for a bit more juice is easy enough....but of course can lead to GPU death...

http://forums.guru3d.com/showthread.php?t=336117

Nate152 wrote:
Hello ConkersGrillforce1337
I had that game conkers bad hair day for the Nintendo 64 system, you brought back some old gaming memories.

Nvidia has put a limit on the voltage that is why you can only take it so far. Also I'm sure you are aware, when overclocking your gtx 580 the shader clock speed has to be double that of what the core clock speed is.

The only way to get the voltage to go higher is to flash it with a bios that allows higher voltage which I would not recommend.

Hehe 😄 Yeah it was a f****** awesome game on the N64 :D, to bad Microsoft aquired the rights :mad:
Thanks for your reply. I know pretty well what I'm doing when I overclock my Asus MarsII :D:p, but thanks for the hint. 😉
I read something about this limit, which is set by Nvidias API, it should be the maximum voltage the GTX580 cores running at right now, ie 1.213V. I think there is no option left to exceed that limit with a modified vbios, or at least if you aren't a Nvidia employee.
That's why I asked for information about a solution using VGA Hotwire. :rolleyes: But for this project I would need information from Asus represantatives, who have access to documents, which describe the board layout of the Asus MarsII, and can explain where to connect the wires on the Asus MarsII PCB. :rolleyes::confused:


Arne Saknussemm wrote:
Yep Voltage is locked and on air that is a good thing...if you watercool fermi it responds well and increasing OC even at same volts is easy and even editing a BIOS for a bit more juice is easy enough....but of course can lead to GPU death...
http://forums.guru3d.com/showthread.php?t=336117

Yeah, voltage problem is described above...:mad:
Thanks, I'm aware of the risk I take. 😉 My Asus MarsII is actually watercooled ;), that's why I'm able to run the card at 950Mhz with maximum core temperature around 58°C. :p:D:cool:
Desktop: Xigmatek Elysium | Rampage IV Extreme | i7-3960X | G.Skill 32Gb DDR3 2133Mhz|fastest Asus MarsII on the planet:cool: core 950Mhz| Kingston HyperX SSD 240Gb + 300Gb Intel 300series SSD + Velociraptor 600Gb + 3TB HDD | Enermax Maxrevo 1500W| 3xDell U2412m |
Laptop: Samsung 940X3G | i7-4500U | 8Gb RAM | 256Gb SSD | 13.3" 3200x1800 |

ConkersGrillfor
Level 9
Nobody capable of explaining, how VGA Hotwire works? Any official?
Why is Asus advertising a feature, which their supporters doesn't even know not to mention be able to give advise, what is needed to be done? :mad:
Desktop: Xigmatek Elysium | Rampage IV Extreme | i7-3960X | G.Skill 32Gb DDR3 2133Mhz|fastest Asus MarsII on the planet:cool: core 950Mhz| Kingston HyperX SSD 240Gb + 300Gb Intel 300series SSD + Velociraptor 600Gb + 3TB HDD | Enermax Maxrevo 1500W| 3xDell U2412m |
Laptop: Samsung 940X3G | i7-4500U | 8Gb RAM | 256Gb SSD | 13.3" 3200x1800 |