Nvidia officially green lights custom designed Titan boards

[Roadrunners]

It's the boost thing that confuses things a bit here, Anand's titan was boosting to just under 1GHz during their benchmarking. So a 35% oc from 837Mhz gives you 1130Mhz but if you were already boosting to nearly 1000Mhz, you're really only getting ~130Mhz which lines up well with the 10% boost you're seeing. Thats how I think it works anyways:biggrin:

I hear what you are saying but i dont think this is the case from what i have seen on the web. The guru review shows the stock setting as being 876mhz and overclocked setting as 1176mhz. Also the user reviews seem to back up the 10% return for a similar overclock with clocks of around 1000mhz to 1170-1200mhz showing less of an increase in frames.

A gtx 680 seems to give a larger return as a percentage and 10% overclock gives approx 5% return in frames.

I'm not really sure how else to word this.. Yes, you can overclock the card, but that overclock will not hold. What started out as a 35% OC ends up being far less, exactly how much less varries.

I can see this being an issue with regards to gaming for long periods of time but surely a few minute benchmark shouldn't scale back the clocks if the temps are kept low enough.



I just find the overclocking results in terms of frames to be allot lower than I expected from this chip.

 

[2is]

You'd be incorrect. It's an issue as soon as there load. Power consumption is directly related to load, not duration. It's not a temp throttling mechanism (although one exists). It's power consumption.

Overclocking results in terms of frames are poor because again, you aren't getting the over-clock you think you're getting. I won't repeat it for a 4th time in 10 minutes so if you want to continue to believe a 35% OC was achieved and maintained, so be it.

 

[Roadrunners]

You'd be incorrect. Is an issue as soon as there load. Power consumption is directly related to load, not duration. It's not a temp throttling mechanism (although one exists). It's power consumption.

I agree that power consumption is directly related. The overclock relies on both temp and voltage with 265w (106%) being the max this card can pull. The 265w seems to be limiting the clock speeds.

In your opinion what clock speeds are these cards maxing out on at a constant max overclock? Do you have any links to show this. The reason why I am asking is I always overclock on water and this card doesn't seem to yield much in terms of actual frames and watercooling would be hampered but the 265w max limit.


Edit: have you actually read the guru review? It shows 1100-1176 mhz yes there is some scaling back but it still shows a low overclock percentage to frames ratio which is the point I am trying to make. I am just looking on info in how far these cards can be pushed and what sort of return on frames can be expected.

 

[BallaTheFeared]

1334MHz at 86C?

 

[Keysplayr]

Valley incorrectly reports GPU core clock. In keeps adding 100MHz to mine. Unless they fixed it, that Titan is likely 1234MHz. Still a very respectable o/c IMHO. Oh wait, I cant have opinions I'd only be lying to myself.

 

[Roadrunners]

1334MHz at 86C?

Thanks for posting that bella, is there a stock clock result to go with this?

 

[BallaTheFeared]

Not that I saw, sorry

All I can say from that screen is that it's under load, and it's fully heated up (end of run).


Has the power limit bios editor been released yet?

 

[Roadrunners]

Not that I saw, sorry

All I can say from that screen is that it's under load, and it's fully heated up (end of run).


Has the power limit bios editor been released yet?

Thanks anyway. I have read there is a bios that can boost the limit to 110%.

 

[BallaTheFeared]

http://www.xtremesystems.org/forums/showthread.php?284014-KGB-Kepler-BIOS-Editor-Unlocker&p=5174744&viewfull=1#post5174744

Here is a special test version of KGB for titan. Only fan, and power supported for now:

No idea what it's capable of but 1300+ at 86C seems like magic compared to stock.

 

[Keysplayr]

In this screenshot, Valley is reporting 1267MHz on my GTX660. According to eVGA Precision Tool, it's 1167MHz.

 

[BallaTheFeared]

Well thanks Keys, that cleared that right up!

Too good to be true, yada, yada...

 

[UaVaj]

Guru3d shows clocks of 1170mhz and it only it only yields 10% boost in frames.

http://www.guru3d.com/articles_pages/geforce_gtx_titan_overclock_guide,1.html

User benchmarks are also showing similar results.

that is a respectable oc. can only image added performance.
such performance boost will help bring the price/performance ratio back to being sane.

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clearly an indication of throttling.

let's hope the non reference design does not have that power cap.

otherwise it will be another fail for titan.