780 Classified overclocking.
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Globber
August 18, 2014 9:10:49 AM
Hello Tom's Hardware. I am currently working on overclocking my 780 Classified and am having hang ups at about 1200 Mhz. I know my card should be capable of much more and I was hoping somebody would have some current info for these cards. I have been using precision X which sounds like from my research could be my problem. I am on my LN2 BIOS and running at 1202 Mhz boosted. If I try to push further (regardless of raising voltage) I end up with crashes. I am noticing in my GPUz monitors that my voltage will drop to zero out of nowhere and BAM - black screen and auto reset to default. My temps seem fine, I have never seen my temp go over 80 C and that was when I was benchmarking around 1350 Mhz, which never came close to stable in games. Using Heaven and Valley to benchmark. At 1254 Mhz my temp was never going over 73C and I had my voltage up to 1.212 but during games I would still get the random voltage drop to zero which would black screen me again. Could it be possible that my PSU is giving me the voltage drop randomly? I am pretty new to GPU OC but I did a lot of research for a few weeks before attempting overclocks. Any advice would be great!
More about : 780 classified overclocking
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Globber
August 18, 2014 3:02:26 PM
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Globber
August 19, 2014 11:36:01 PM
I am assuming it is probably not power supply. If my PSU was unstable I would have to assume that running Prime95 for a few hours with my CPU @ 4900 would expose some kind of issue with my PSU. I am thinking I need to flash or at least update my BIOS. As soon as I go over 1200 Mhz on the GPU it becomes unstable, raising the voltage has not helped from increments of 13 until I was at 1.212. Been playing with it more and noticing everything is fine otherwise.
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Globber
August 20, 2014 12:37:33 PM
Globber
August 20, 2014 12:39:32 PM
Sorry, I should have been more specific there. Was just using my CPU power and stability as reference to my power supply. I would assume that if my PSU was having issues then my CPU would have issues holding a stable overclock. And I was assuming that the same would go for my GPU, even though my GPU uses 3 times the power of my CPU. But correct me if I am wrong. Thanks for the help!
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http://www.overclock.net/t/1411500/official-evga-classi...
its easy... you should ask there, team skynet will help you.
i flashed my classy in minutes with their skynet bios. it will tremedously help stability and get rid of stupid boost 2.0 and give you a 200% power target.
if you were benching at 1350mhz, which ive gotten mine too.. you were well past the 115% power target and your card was throttling. you need the bios to unlock higher, i believe i was at a 133% power target running 1375mhz core to stop throttling. that is why your voltage was dropping as the card protected itself. also you should use msi afterburner instead of precision.
you will also want to get the classified voltage tool so you can control voltage with it, also you can raise the pwm frequency to help stability, along with memory voltage.
its easy... you should ask there, team skynet will help you.
i flashed my classy in minutes with their skynet bios. it will tremedously help stability and get rid of stupid boost 2.0 and give you a 200% power target.
if you were benching at 1350mhz, which ive gotten mine too.. you were well past the 115% power target and your card was throttling. you need the bios to unlock higher, i believe i was at a 133% power target running 1375mhz core to stop throttling. that is why your voltage was dropping as the card protected itself. also you should use msi afterburner instead of precision.
you will also want to get the classified voltage tool so you can control voltage with it, also you can raise the pwm frequency to help stability, along with memory voltage.
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Globber
August 21, 2014 9:26:20 AM
It just seems to be terribly unstable in general on precision x, but only with certain games. It benchmarks fine in Heaven, I think i was getting about 78 FPS with tesselation on normal. I did clock it back down to 1290 because I was going over 100% power in heaven at 1350 Mhz. No games will run at that speed for me. But when I launch some games I get crashes at anything over 1220 Mhz, especially HAWKEN. Game loads fine and logs in fine, but as soon as I deploy to battlefield it crashes and resets me to default. Precision X will still say it is at 1290 Mhz but GPUZ only reports 531 or 836Mhz. I don't know where the 531 even comes from. Last night I got a BSOD on it and then reset to default and back to 1200 and it seems stable. Anything over that and I am over power target until I raise voltage and as soon as I raise voltage I get instability when the core starts clocking up during load screens. Thanks for the info. I will check their forums as well!
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Best solution
you should use msi afterburner. load msi ab up, put in whatever overclock your running, and load up your game. let it crash, or whatever. look at msi ab's hardware monitor and what it reports the power target is. if its maxing out your power target, which would be 115% if your on the ln2 bios, then that is your problem. you can look at the other things like the core clock, which should show a steady line, not a jaggy one, same with core voltage. you will need to go into the msi ab settings to unlock voltage monitoring along with voltage control. but you really should be using the classified voltage tool for voltage tuning, and use msi ab for core and memory clock frequencies.
put a skynet bios on it. your card is made for this.
put a skynet bios on it. your card is made for this.
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Globber
August 22, 2014 7:25:31 AM
nikoli707 said:
you should use msi afterburner. load msi ab up, put in whatever overclock your running, and load up your game. let it crash, or whatever. look at msi ab's hardware monitor and what it reports the power target is. if its maxing out your power target, which would be 115% if your on the ln2 bios, then that is your problem. you can look at the other things like the core clock, which should show a steady line, not a jaggy one, same with core voltage. you will need to go into the msi ab settings to unlock voltage monitoring along with voltage control. but you really should be using the classified voltage tool for voltage tuning, and use msi ab for core and memory clock frequencies.put a skynet bios on it. your card is made for this.
Do I need to uninstall Precision X? Is it even worth using Precision X?
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Globber
August 22, 2014 7:28:04 AM
Globber said:
nikoli707 said:
you should use msi afterburner. load msi ab up, put in whatever overclock your running, and load up your game. let it crash, or whatever. look at msi ab's hardware monitor and what it reports the power target is. if its maxing out your power target, which would be 115% if your on the ln2 bios, then that is your problem. you can look at the other things like the core clock, which should show a steady line, not a jaggy one, same with core voltage. you will need to go into the msi ab settings to unlock voltage monitoring along with voltage control. but you really should be using the classified voltage tool for voltage tuning, and use msi ab for core and memory clock frequencies.put a skynet bios on it. your card is made for this.
Do I need to uninstall Precision X? Is it even worth using Precision X?
you don't necessarily have to uninstall precision x, but it would be a good idea since you won't be using it. everybody uses msi ab for their classifieds. i heard msi ab has more stable over clocks, but this doesn't really make much sense to me. precision x is just a copy of msi ab anyways using the riva tuner tools.
your going to need a good 360 rad and d5 pump for two classifieds.
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Globber
August 22, 2014 11:02:58 AM
nikoli707 said:
you should use msi afterburner. load msi ab up, put in whatever overclock your running, and load up your game. let it crash, or whatever. look at msi ab's hardware monitor and what it reports the power target is. if its maxing out your power target, which would be 115% if your on the ln2 bios, then that is your problem. you can look at the other things like the core clock, which should show a steady line, not a jaggy one, same with core voltage. you will need to go into the msi ab settings to unlock voltage monitoring along with voltage control. but you really should be using the classified voltage tool for voltage tuning, and use msi ab for core and memory clock frequencies.put a skynet bios on it. your card is made for this.
With out flashing BIOS I have noticed instant difference going to AB and CVC. Core clock so far is running stable at 1306 Mhz with 1.206V on CVC. The boost in CVC only actually puts me at 1.99V but it holds steady there and framerates are now a constant over 70 FPS. My games that were crashing on load are now running very clean. Thanks for the help, I will let you know how things hold up, will probably flash LN2 BIOS with Skyn3t once i can find a good download for it. Thanks!
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Globber said:
nikoli707 said:
you should use msi afterburner. load msi ab up, put in whatever overclock your running, and load up your game. let it crash, or whatever. look at msi ab's hardware monitor and what it reports the power target is. if its maxing out your power target, which would be 115% if your on the ln2 bios, then that is your problem. you can look at the other things like the core clock, which should show a steady line, not a jaggy one, same with core voltage. you will need to go into the msi ab settings to unlock voltage monitoring along with voltage control. but you really should be using the classified voltage tool for voltage tuning, and use msi ab for core and memory clock frequencies.put a skynet bios on it. your card is made for this.
With out flashing BIOS I have noticed instant difference going to AB and CVC. Core clock so far is running stable at 1306 Mhz with 1.206V on CVC. The boost in CVC only actually puts me at 1.99V but it holds steady there and framerates are now a constant over 70 FPS. My games that were crashing on load are now running very clean. Thanks for the help, I will let you know how things hold up, will probably flash LN2 BIOS with Skyn3t once i can find a good download for it. Thanks!
just download gpuz and backup your stock ln2 bios and note what gpuz says your bios revision is… 80.80.xx.xx or whatever. then post on the forum i linked you to asking which classified bios you need for your revision number. then all you need is nvflash and its takes a minute or two.
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Globber
August 27, 2014 10:48:53 AM
Globber said:
My onboard BIOS is 80.80.21.01.80 (P2083-0021). I haven't gotten a response from Overclock.net yet. I am just not sure I if I need to use the Rev # 3 BIOS or the Rev #4 BIOS. Rev #3 matches my version # in it's description. Just not sure. Thanks for the help! yes, if rev#3 matches your stock bios then that is the one you want. i believe if i remember correctly that was my bios revision too.
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Globber
August 27, 2014 9:20:35 PM
Globber said:
Unless I am missing something, their directions for launching NVFlash do not match what is available for my computer. I do not have the option to right click and open command prompts.are you on windows 8?
im pretty sure you can hold down "shift" and right click for both windows 7 or 8. im doing it right now on win7 and its labled as "open command window here"
http://www.eightforums.com/tutorials/9702-command-promp...
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Globber
August 28, 2014 12:26:36 AM
Just opened command prompt through the menu then navigated to my folder with NVFlash from there. Seems to have flashed fine. I now have the 300% Power Limit. Card runs at 888 unless I open a game or benchmarking program then it instantly goes up to 1111 until game launch. I have my clock set to 1280 for now to see how well it works. Still notice some artifacts over 1306 Mhz though on Heaven and Valley. The crashes seem to be better, as in it hasn't crashed yet.
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Globber said:
Just opened command prompt through the menu then navigated to my folder with NVFlash from there. Seems to have flashed fine. I now have the 300% Power Limit. Card runs at 888 unless I open a game or benchmarking program then it instantly goes up to 1111 until game launch. I have my clock set to 1280 for now to see how well it works. Still notice some artifacts over 1306 Mhz though on Heaven and Valley. The crashes seem to be better, as in it hasn't crashed yet. at what voltage? i believe i started having artifacts at around 1330 with 1.212v.
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Globber
August 28, 2014 11:41:21 AM
nikoli707 said:
Globber said:
Just opened command prompt through the menu then navigated to my folder with NVFlash from there. Seems to have flashed fine. I now have the 300% Power Limit. Card runs at 888 unless I open a game or benchmarking program then it instantly goes up to 1111 until game launch. I have my clock set to 1280 for now to see how well it works. Still notice some artifacts over 1306 Mhz though on Heaven and Valley. The crashes seem to be better, as in it hasn't crashed yet. at what voltage? i believe i started having artifacts at around 1330 with 1.212v.
So, I set my voltage at 1.212 but that's not what GPUz tells me I am getting. It tells me its aroung 1.199 volts at that setting. As soon as I bump up to 1306 from 1293 I start getting artifacts no matter the voltage. If I start bumping the voltage higher then my temps hit my limit(around 82C) and my GPU starts throttling. Or likewise if I start popping my power target over 150% my temps still climb too high. It'll be nice if I can build a loop soon and get an EK block on it. 1280-1293 Mhz seem pretty comfortable anyway, especially with the Skyn3t BIOS.
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Globber
August 28, 2014 11:42:17 AM
Globber
August 31, 2014 9:59:26 AM
So, I have no idea what happened, but my rig won't boot. My cpu light, then memory light, then GPU light come on as normal on my mobo, then my boot light comes on for a second and then the machine just shuts down. Not sure if it is an issue with my GPU or my motherboard. I switched back to my LN1 BIOS on the GPU for now which is at stock settings. If anyone has any idea where I should start with figuring it out, let me know. I am at a loss as of now. Thanks!
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Globber
August 31, 2014 11:20:05 PM
Wife left the room door open and the cat(which is banned from the bedroom) got in and stuck her paws in my case. Pulled some fan wires out and most importantly unplugged my pump in my CPU cooler. So my CPU was hitting crash temp by the time I was getting to Boot device during POST, and shutting down to avoid damage. Which thank god my system is set up that way. CPU doesn't appear to be damaged and everything seems to be running fine again. Haha! Friggin animals!
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Globber said:
Wife left the room door open and the cat(which is banned from the bedroom) got in and stuck her paws in my case. Pulled some fan wires out and most importantly unplugged my pump in my CPU cooler. So my CPU was hitting crash temp by the time I was getting to Boot device during POST, and shutting down to avoid damage. Which thank god my system is set up that way. CPU doesn't appear to be damaged and everything seems to be running fine again. Haha! Friggin animals!ouch. cat, you are banned. yes, its very doubtful any real damage was done, protection is there for a reason. i do believe if the mobo receives no return signal from the pwm fan, it can "stop" all functions as protection so you might not even hit a high temp. anyways if it was a high temp, it was at a low core voltage and not sustained anywhere near long enough for electromigration to set in.
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Globber
September 1, 2014 10:13:39 PM
Everything is running pretty smooth so far. Waiting for my 4th monitor to complete my setup. The 780 is cranking out some power now! Running Lichdom:Battlemage on maxed settings on 144hz and it looks awesome! Framerate is staying over 70, temp hits max of 85C though. But so far seems nice. Seems like Metro:Last Light and Battlemage are pretty demanding on max settings to test overclocking. Benchmarked on Heaven and Valley up 1342 Mhz but not very stable.
So now I am curious about the other 2 sliders on my Classified Controller. FBVDD and PEXVDD. What do they do? What are they for? I most likely would not touch them until I get a good EKBlock and loop set up. But I still would like to know what they are for. I am familiar with the PWM freq. which I have set to 312 and sometimes 400 Khz(depends on voltage demands of my games being played). Thoughts?
So now I am curious about the other 2 sliders on my Classified Controller. FBVDD and PEXVDD. What do they do? What are they for? I most likely would not touch them until I get a good EKBlock and loop set up. But I still would like to know what they are for. I am familiar with the PWM freq. which I have set to 312 and sometimes 400 Khz(depends on voltage demands of my games being played). Thoughts?
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i wouldn't let it hold 85c.... kept at at 80c and let the stock temp target of 82c stay the same, unless your doing quick benchmarking and letting it cool down.
frame buffer voltage, and pciexpress voltage. you shouldn't need to play around with these under stock air. thouhg the pwm freq moved up a little can help with stability but your voltage under load will raise slightly. though chil8318 controller doesn't allow much vdroop on the cards anyways, or unless your at an exotic voltage. you likely dont need it unless your past the normal 1.212 limit. i would imagine if your at 1.30v under water, you would want to test pwm freq settings by using a multimeter on the card to see what the actual voltage is vs what the software is telling you.
frame buffer voltage, and pciexpress voltage. you shouldn't need to play around with these under stock air. thouhg the pwm freq moved up a little can help with stability but your voltage under load will raise slightly. though chil8318 controller doesn't allow much vdroop on the cards anyways, or unless your at an exotic voltage. you likely dont need it unless your past the normal 1.212 limit. i would imagine if your at 1.30v under water, you would want to test pwm freq settings by using a multimeter on the card to see what the actual voltage is vs what the software is telling you.
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Globber
September 5, 2014 12:36:26 AM
Yes, I know that 85 is too high. It was only that high for a night when it was around 95F in my house. I knew temps get high that night. I haven't seen it go over 78C since. However, my monitor configuration is not working as expected. Here is how I had my monitors set up:
1 ASUS VE248Q - Up Top Center - DVI-I
1 ASUS VE248Q - Left Monitor - HDMI
1 ASUS VG248QE - Center Main Monitor - Dual Link DVI-D
1 ASUS VE248Q - Right Monitor - DisplayPort
Now, what I wanted to do was swap the 2 center monitors, The VG248QE to move up and stand alone and the 3 VE248Q monitors all to be side by side in landscape mode on NVidia surround. I wanted the VG248QE to be set at 144Hz and the 3 VE248Q monitors to be set as one monitor at 60Hz. So I hooked it up this way and it would not work. Is this just not possible? Would I be able to accomplish this once I get my 2nd GPU for SLI mode? I could not seem to get my configuration to work with three monitors in surround without using both DVI connections. Is there a way to change it so that the DVI-D connection does not have to be used in surround?
Second question, I know this has been discussed but it seems like info is not so straight forward. My mobo can handle 2 way SLI at x16/x16 or 3 way at x16/x8/x8. Is it worth getting 3 way SLI if it means dropping down to x8? Or is it better to just run with 2 way SLI at x16/x16? Ultimately I would like to be running 3 VG248QE's in landscape mode at 144Hz and I am wondering what the minimum requirements would be for this to be able to handle everything maxed at 144Hz?
Thanks! Always loving talking computers!
-Globbah
1 ASUS VE248Q - Up Top Center - DVI-I
1 ASUS VE248Q - Left Monitor - HDMI
1 ASUS VG248QE - Center Main Monitor - Dual Link DVI-D
1 ASUS VE248Q - Right Monitor - DisplayPort
Now, what I wanted to do was swap the 2 center monitors, The VG248QE to move up and stand alone and the 3 VE248Q monitors all to be side by side in landscape mode on NVidia surround. I wanted the VG248QE to be set at 144Hz and the 3 VE248Q monitors to be set as one monitor at 60Hz. So I hooked it up this way and it would not work. Is this just not possible? Would I be able to accomplish this once I get my 2nd GPU for SLI mode? I could not seem to get my configuration to work with three monitors in surround without using both DVI connections. Is there a way to change it so that the DVI-D connection does not have to be used in surround?
Second question, I know this has been discussed but it seems like info is not so straight forward. My mobo can handle 2 way SLI at x16/x16 or 3 way at x16/x8/x8. Is it worth getting 3 way SLI if it means dropping down to x8? Or is it better to just run with 2 way SLI at x16/x16? Ultimately I would like to be running 3 VG248QE's in landscape mode at 144Hz and I am wondering what the minimum requirements would be for this to be able to handle everything maxed at 144Hz?
Thanks! Always loving talking computers!
-Globbah
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