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EVGA Dual Bios Classified 780 + Overclocking

enigma27

enigma27

enigma27

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Hi All.

Anyone with on of the above give me some pointers on Overclocking this bad boy?

My old GTX 680 was overclocked but the whole new GPU boost 2 and targets is confusing me a bit... I would rather not have to overvolt and just find the most stable i can run this card on default volts.

What should i set CPU target and Power target at and what results have people found they could achieve?
 
Hi,

With GPU boost 2.0 you need to put the BIOS switch to position 2 for advanced OC features. Then you can raise with the precision Tool the power target to max. and adjust the temp target like you want to. Most people do not go to the max for daily usage and put to 85-87 degree. I would also suggest to set up a custom fancourve and raise the fanspeed earlier then the auto settings then you can keep the card a little cooler with similar final fanspeed.
The card do normally not overclock itself to the very maximum. So you can then have a look how much the card overclocks itself and then raise it further manually in 20 MHz steps. To test if the overclock is stable you can use Heaven benchmark. If this runs fine for 20 mins half an hour you can raise the clock again. If a clock is not stable Heaven will fail, the driver will get kicked and then recover again.
For the RAM I would suggest to put 100MHz overclock on it, see if this is stable and then raise in 20MHz steps again.
Just for your info, volt mod tools are all in all also safe for this card with the ACX cooler, raising the voltage to 1.25 - 1.3 is normally no problem an "save" Then you can reach much higher clocks.
About the max clocks, this vary from chip to chip and there is no rule how far it will go for sure.
 
No it's on the top, it's a small white switch.
osjg.jpg


I would like to know where exactly this tool is to enable 1.3v on the card and what is the advantage of disabling the boost as a lot of the custom bios seem to do. I also don't understand the boost clock, I added a modest +100 on my card and yet it's boosting to about 1276 which is a lot higher than it should be according to GPU-Z, not that I mind. Also, I cannot seem to get the Precision X with the test button enabled.
 
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It's called Classified Controller, you can get it from overclock.net.
I don't really recommended it for normal use, just benching.
 
I recall getting something with sliders a small MFC app but it didn't actually affect the voltage at all.
 
I deffo did and it was maxing out on 1200, I do not know if the power limit comes into this. However, just found out about the step up program so not as fussed now :)
 
ok had a bit of a play tonight for anyone interested in the results without playing with voltage.

So far i have it at boosting at 1176 and memory at 3151 and its rock solid benching with heaven and value... so far max temp recorded is 80 degrees.

going to keep upping until i find the stable point without having to up the voltage.
 
Hi there. I'm really interested in this as the Classified is on my shortlist of cards to buy. I too would be lookin for a stable (preferably standard voltage) OC for gaming. Can I ask what case you have and also what sort of rate the fans were going to keep the card at 80 degrees?

Also, is that 1176 the actual boost clock in-game?
 
AdrianIscariot said:
Hi there. I'm really interested in this as the Classified is on my shortlist of cards to buy. I too would be lookin for a stable (preferably standard voltage) OC for gaming. Can I ask what case you have and also what sort of rate the fans were going to keep the card at 80 degrees?

Also, is that 1176 the actual boost clock in-game?
Click to expand...

Hi.

I run this in a corsair 540 case.. have three intake fans on the front and two large expelling in the top. Max fan speed was recorded at 74% with those results above.

EVGA is reporting 1176 as max boost in the benchmark... thats running +60hz on the gpu offset
 
AdrianIscariot said:
Hi there. I'm really interested in this as the Classified is on my shortlist of cards to buy. I too would be lookin for a stable (preferably standard voltage) OC for gaming. Can I ask what case you have and also what sort of rate the fans were going to keep the card at 80 degrees?

Also, is that 1176 the actual boost clock in-game?
Click to expand...

Mine @1.2ghz runs around 70C with fans at 54% (1900rpm). It's quite a good cooler.
 
ok some more results

GPU Clock Max: 1215
Memory Max: 3225
GPU Offset: 80mhz
Memory Offset: 220mhz
Power Target: 115%
Temp Target: 86 Degrees
Max Temp: 79
Max Fan Speed: 65
Voltage 1.15

This run heaven no problems

Unigine Heaven Benchmark 4.0

FPS: 68.3
Score: 1721
Min FPS: 8.7
Max FPS: 140.1

System

Platform: Windows NT 6.2 (build 9200) 64bit
CPU model: Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz (3292MHz) x4
GPU model: NVIDIA GeForce GTX 780 9.18.13.3165 (3072MB) x1

Settings

Render: Direct3D11
Mode: 1920x1063 4xAA windowed
Preset Custom
Quality: Ultra
Tessellation: Extreme
 
Nice! Seems like finding a stable overclock is quite a lengthy process. Is it best to run heaven for 20 minutes with each change?

I was looking at the 540 but am tempted by the 500R and its 200mm fan that targets the GPU area. What sort of noise are the fans making at 65%?

Thefogo - that sounds like a sweet OC for gaming. Great temps at a low fan rate!
 
Fan noise is fine... can hardly hear a change at that rate...

Just played some BF4 single player will all settings maxed out... ran smooth as even in high intensity areas.
 
just did another test and came up with the following

GPU Clock Max: 1254
Memory Max: 3251 (6500 Effective)
GPU Offset:100mhz
Memory Offset: 250mhz
Power Target: 115%
Temp Target: 86 Degrees
Max Temp: 84
Max Fan Speed: 66
Voltage 1.2

This run heaven no problems

Unigine Heaven Benchmark 4.0

FPS: 70.9
Score: 1787
Min FPS: 27.5
Max FPS: 142.7

using EVGA the Max voltage i can ramp it up to is 1.2 volts..

do you need some other software to get it past 1.2?
 
ok and another one...

GPU Clock Max: 1293 ( clocked down to 1280 as it hit temp target )
Memory Max: 3305 (6610 Effective)
GPU Offset: 125mhz
Memory Offset: 300mhz
Power Target: 115%
Temp Target: 86 Degrees
Max Temp: 84
Max Fan Speed: 66
Voltage 1.2 ( actual voltage being read during benchmark is 1.187 )

This run heaven no problems

Unigine Heaven Benchmark 4.0

FPS: 72.2
Score: 1820
Min FPS: 27.5
Max FPS: 145.3
 
You guys should check out the modified BIOS by skyn3t in OCN.

At over 1250mhz core you could be throttling on the power target, he has the latest classified/LN2 BIOS modded with up to 200 Power Target.

The bios works really well...
 
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