GPU Overclocking in DCS...

[JazonXD]

For the longest time, even since the DX9 days of 1.2, GPU overclocking did not sit well with DCS it seems. After a few minutes of the flying the game would freeze up, or crash or sometimes even a system total lock-up. I've recently just spend a good 2 days to validate my new overclock on my GTX 750 Ti, I tried this overclock in some other games such as GTA V and BF4, both which ran very well and today when I tried to run my overclock on DCS, just like before, within just a few minutes, the whole system hard locked. So now I'm wondering if any of you guys have observed the same issue? Do any of you run overclocks with DCS? If so, please let me know. Any help would be appreciated. Thank you :)

[plehmann]

I'm +100 gpu overclock @+40mV no issues with any version...help to reduce the low framefrate drops... gtx 980 sli oh yeah...no memory OC

[JazonXD]

I'm +100 gpu overclock @+40mV no issues with any version...help to reduce the low framefrate drops... gtx 980 sli oh yeah...no memory OC

 

Interesting... Maybe I'll try no memory OC like you...

[droopy114]

GTX 970 user here, i'm using Nvidia Inspector for overclocking. Currently i'm at +100Mhz for both GPU clock and memory, but the thing that make my overclock stable is the "Power and Temperature Target" cursor. Default is set at 100%, i've read somewhere it must be set to 106% for GTX 970.

100%: crash

106%: no problem

Not the same graphic card, but maybe something to try.

[JazonXD]

GTX 970 user here, i'm using Nvidia Inspector for overclocking. Currently i'm at +100Mhz for both GPU clock and memory, but the thing that make my overclock stable is the "Power and Temperature Target" cursor. Default is set at 100%, i've read somewhere it must be set to 106% for GTX 970.

100%: crash

106%: no problem

Not the same graphic card, but maybe something to try.

 

Welp, you see, the 750 ti is fairly limited in terms of the power that is available to it seeing it only has the PCI-E slot to deliver power, no extra connectors. So by default the 750 Ti doesn't even go higher than 100% power and further more, the voltage seem to be hard locked to 1.2V. I've modded the BIOS to allow extra power to around 115% and it now runs the same overclock as 100% and no modded BIOS but actually with better performance (weird 750 ti thing i guess) but I've still have yet to find a way to mod the bIOS to allow more than 1.2V. As for stability, I've tested the overclock in Heaven (ran it for hours) and also in other games without crashing. I think it's only DCS that doesn't like the overclock on the 750 ti. When I have time I think I'll try without overclocking the memory like the post above. Thanks! :)

[plehmann]

Interesting... Maybe I'll try no memory OC like you...

Also as below the temp and power limits were set to max.

 

Sent from my HTC One_M8 using Tapatalk

[*Rage*]

Mem overclock isnt really needed for gaming. Core overclocking much more important. Ive had no issues overclocking AMD or Nvidia gpus for DCS as long as they get enough power for the core oc.

[JazonXD]

Mem overclock isnt really needed for gaming. Core overclocking much more important. Ive had no issues overclocking AMD or Nvidia gpus for DCS as long as they get enough power for the core oc.

 

well... Just tried core OC only and it crashed only a few seconds into flying...

[OldE24]

i use 2x ATI 6950's 800/1250 OC@ 900/1300 stable anything more and it crashes.

[tovivan]

Before I upgraded my pc I always had my old HD 6770 (that wasn't extra even when it was new, 5 years ago) core-overclocked. First with ATI Tools as long as they were supported, but the last few years with MSI Afterburner. Achieved very nice results and as long as I stayed within stable range I never really had problems with stability or crashing.

 

EDIT: and yes, that was in 1.2 as well. :)

[JazonXD]

Before I upgraded my pc I always had my old HD 6770 (that wasn't extra even when it was new, 5 years ago) core-overclocked. First with ATI Tools as long as they were supported, but the last few years with MSI Afterburner. Achieved very nice results and as long as I stayed within stable range I never really had problems with stability or crashing.

 

EDIT: and yes, that was in 1.2 as well. :)

 

I guess it's just me or something then... DCS always crashes whenever I run an overclock... PSU definitely not the problem as the card doesn't even need a PCI-E connector lol

[Sporg]

I guess it's just me or something then... DCS always crashes whenever I run an overclock... PSU definitely not the problem as the card doesn't even need a PCI-E connector lol

 

That could actually be your problem right there.

 

Just guessing, but the PCI-E socket can only provide a certain amount of current. That's why the PCI-E connector is used on more power hungry cards.

Maybe by overclocking you are exceeding the current limit of the PCI-E socket.

[JazonXD]

That could actually be your problem right there.

 

Just guessing, but the PCI-E socket can only provide a certain amount of current. That's why the PCI-E connector is used on more power hungry cards.

Maybe by overclocking you are exceeding the current limit of the PCI-E socket.

 

I don't think that's the problem because like I explained earlier in this thread, I fully validated the stability of the max overclock (with +114 core and +425 mem) by running Heaven non-stop, firestrike, and also several other games such as bf4 and gta v. They had no problems with the overclock so clearly power delivery is the problem (I also modified the BIOS and raised the power limit of the card anyway). Only in DCS it keep crashing :/

[*Rage*]

Ive been a little dissapointed in Heaven and Futuremarks ability to stesstest an overclock. I can have a OC completely Heavan and Futuremark stable and yet the display driver crashes in DCS and Wargame. I have to then either increase the power or drop the core. This is with the latest drivers and game patches.

[BitMaster]

Overclocking my 980GTX to 1500MHz GPU and 8000MHz VRAM

 

no crashes in any games due to oc but it is completely watercooled and my GPU temp never rises above 50°C.

 

* I also run Wargames titles, no errors

[JazonXD]

Ive been a little dissapointed in Heaven and Futuremarks ability to stesstest an overclock. I can have a OC completely Heavan and Futuremark stable and yet the display driver crashes in DCS and Wargame. I have to then either increase the power or drop the core. This is with the latest drivers and game patches.

 

Interesting thought... Like I said, I did indeed test the OC on other games as well. I also did Furmark stress-testing and I ran that for about 30 mins non stop and it was fine. Are there any other benchmarks that stress-tests better than those 3?

[BitMaster]

it might not be oc related if all others work fine, that's the nearest assumption you can make out of what you describe.

 

Hypothetically, if that is true, it must be software related, either OS, NV or ED, somewhere in that triangle...maybe....IF above is correct

[The_Nephilim]

Interesting thought... Like I said, I did indeed test the OC on other games as well. I also did Furmark stress-testing and I ran that for about 30 mins non stop and it was fine. Are there any other benchmarks that stress-tests better than those 3?

 

TRY MSI Kombustor..GPU Core Burner Furry Donut.. note the temps.. it also has a few others test to run like for memory of the vid card and such

[Sporg]

Interesting thought... Like I said, I did indeed test the OC on other games as well. I also did Furmark stress-testing and I ran that for about 30 mins non stop and it was fine. Are there any other benchmarks that stress-tests better than those 3?

 

I have a question:

When you test your GPU overclock, do you only stress the GPU?

 

When I do stability testing, I usually push both GPU and CPU to the max.

Maybe this can be relevant to a CPU intensive game like DCS?

 

For GPU I use Furmark, for CPU I use Core2MaxPerf.

 

You could also try Core2MaxPerf in combination with the two other GPU benchmarks that you have been using.

 

I don't know if it gives you a result (crash) but maybe worth trying?

 

(Btw, interesting info for i7 CPU: I get higher temperatures using 4 cores than when using 8 cores / hyper-threading.)

[JazonXD]

I have a question:

When you test your GPU overclock, do you only stress the GPU?

 

When I do stability testing, I usually push both GPU and CPU to the max.

Maybe this can be relevant to a CPU intensive game like DCS?

 

For GPU I use Furmark, for CPU I use Core2MaxPerf.

 

You could also try Core2MaxPerf in combination with the two other GPU benchmarks that you have been using.

 

I don't know if it gives you a result (crash) but maybe worth trying?

 

(Btw, interesting info for i7 CPU: I get higher temperatures using 4 cores than when using 8 cores / hyper-threading.)

 

Well, if I push my CPU to max, then GPU won't be at the max anymore because it's too busy and the CPU has become the bottleneck. At that point, you're not fully stressing the GPU anymore (it'll hover around 60 to 20% usage etc.) which destroys the point of stressing the overclock :D

[Sporg]

Well, if I push my CPU to max, then GPU won't be at the max anymore because it's too busy and the CPU has become the bottleneck. At that point, you're not fully stressing the GPU anymore (it'll hover around 60 to 20% usage etc.) which destroys the point of stressing the overclock :D

 

If you want to test, you can just put the max performance on 3 cores, then there is one left for the GPU.

 

Now you mention it, I think that is what I do as well. :)