Overclocking CPU: How much FPS will I gain?

[vin747 316]

My CPU: i7 4790K, 4 Ghz, turbo boost up to 4.4 Ghz

GPU: GTX 1070

16GB RAM

 

I want to know how much FPS will I gain from overclocking to say 4.8 Ghz at the most demanding situations (i.e. on final approach to EGLL/EHAM with ORBX OpenLC) ? 

If I'm getting an average of 20 FPS right now on approach to EHAM/EGLL on a PMDG 777, will a 20% increase from 4 to 4.8 give a 20% increase in FPS from 20 to 24 FPS?

1. Is that Math correct? Is it a simple linear thing like that or more complicated?

2. I'm guessing the overclocking will not solve the FPS fluctuations that are typical when you have a 60Hz monitor and the FPS jumps from 30 to 15 and back to 30.. If the average FPS stayed above 60, i can lock it to 60 FPS.. In AFS2, it stays solid at 60 or even 100 on approach to KLAX with ultra settings. 

3. Is that 4 FPS gain even worth the trouble of overclocking? Am i better off waiting for P3D V5 where hopefully they pull a rabbit out of the hat and do something with multicore/multithreading and give us a 60 FPS sim...

 

 

Edited April 15, 2019 by vin747

[Pete Dowson 558]

52 minutes ago, vin747 said:

Is that 4 FPS gain even worth the trouble of overclocking? Am i better off waiting for P3D V5 where hopefully they pull a rabbit out of the hat and do something with multicore/multithreading and give us a 60 FPS sim...

Frame rates are overrated ;-). It's smoothness you should be aiming for. If it is always smooth, then stop. You've achieved perfection!

If you must concentrate just on frame rates, then let me say if it is at least 20 fps everywhere, with any settings I want, then that's sufficient. If it's smooth even dips below 20 are acceptable.

My 9900K is overclocked (with good cooling) to 5.5GHz, but I'm using P3D4 with 3 projectors and a 210 degree FOV curved screen. Because this necessitates three scenery windows open in P3D, laid down in surround mode, I am lucky to get to 30 fps (my limit) in all areas with most P3D settings at average.  Any performance improvements in P3D will just let me increase some of the settings, hopefully.

Pete

 

[itsjase 52]

1 hour ago, vin747 said:

My CPU: i7 4790K, 4 Ghz, turbo boost up to 4.4 Ghz

GPU: GTX 1070

16GB RAM

 

I want to know how much FPS will I gain from overclocking to say 4.8 Ghz at the most demanding situations (i.e. on final approach to EGLL/EHAM with ORBX OpenLC) ? 

If I'm getting an average of 20 FPS right now on approach to EHAM/EGLL on a PMDG 777, will a 20% increase from 4 to 4.8 give a 20% increase in FPS from 20 to 24 FPS?

1. Is that Math correct? Is it a simple linear thing like that or more complicated?

2. I'm guessing the overclocking will not solve the FPS fluctuations that are typical when you have a 60Hz monitor and the FPS jumps from 30 to 15 and back to 30.. If the average FPS stayed above 60, i can lock it to 60 FPS.. In AFS2, it stays solid at 60 or even 100 on approach to KLAX with ultra settings. 

3. Is that 4 FPS gain even worth the trouble of overclocking? Am i better off waiting for P3D V5 where hopefully they pull a rabbit out of the hat and do something with multicore/multithreading and give us a 60 FPS sim...

 

 

1. If you are CPU bottlenecked then yes, increasing your core speed will give a linear increase. So yeh you'll get 4 extra fps.

2. Nah it wont, some people lock it at a low limit but I much prefer leaving it unlocked. With Gsync fluctuations are MUCH less noticable, and stutters are pretty much gone.

3. I think so, those times you drop to 15fps, you might drop to 18 or 19fps instead, you won't notice much difference in Average FPS but you'll notice the drops during the most demanding situations are less severe.

[vin747 316]

for smoothness, i think i need to be at or above 25 fps.. when its down to 20 or teens, i can see scenery move frame by frame.. 25 and above generally gives me fluid feel.. 

problem is my monitor is 60hz and don't think it has gsync.. so i can't lock it at 60.. locking it at 25 doesn't give me best perf overall but leaving it unlimited seems to give highest fps.. 

this monitor issue is causing me the sudden drops in fps, jerky spikes, etc during final approach.. it's more pronounced in p3d than xp11 as far as i remember.. of course, AFS2 is the best in this regard.. i can lock it at 60 or 100 and forget about it!

I can deal with the lower average FPS by dialing down the settings.. I'm usually very modest with settings even though i have a decent rig.. i'm more interested in fluidity than eye candy.. so don't need to overclock then.. 

but the spikes and drops in fps cannot be solved even by overclocking.. i see some youtube streamers with 5 gigs cpus and even they encounter fps dropping momentarily to 15 and then back to 30 on final approach.. this is something LM has to fix or we need to get gsync monitors.. 

[AnkH 2,233]

Short answer: no, it is not worth the effort. Simply because it will not be that easy to get this 4790K at 4.8GHz stable. Instead adjust the settings to gain those 20% FPS, faster done and easier to achieve...

[Bob Scott 7,715]

3 hours ago, AnkH said:

Short answer: no, it is not worth the effort. Simply because it will not be that easy to get this 4790K at 4.8GHz stable. Instead adjust the settings to gain those 20% FPS, faster done and easier to achieve...

I still have a PC with a 4790K, which is running nice and stable overclocked to 4.7 GHz...those Devil's Canyon CPUs are actually pretty easy to overclock.  All that's needed is a good CPU cooler and a little time--I think it's worth the time and expense.

If clock speed didn't make a difference, it wouldn't make much sense for any of us to upgrade to anything beyond a 10-year old Sandy Bridge machine.  Of course it makes a difference...how much will depend on the program and how it's configured.

Regards

[lownslo 592]

There really is no good reason not to overclock.  The most it will cost is the expense of better CPU cooling (that's always good) and some time (the latter being free, of course).  Yet another advantage to overclocking is that it is great way to learn more about one's system and computers in general.  That too is never a bad thing.

Regards,

Greg

[westman 257]

5 hours ago, Pete Dowson said:

Frame rates are overrated ;-). It's smoothness you should be aiming for. If it is always smooth, then stop. You've achieved perfection!

If you must concentrate just on frame rates, then let me say if it is at least 20 fps everywhere, with any settings I want, then that's sufficient. If it's smooth even dips below 20 are acceptable.

My 9900K is overclocked (with good cooling) to 5.5GHz, but I'm using P3D4 with 3 projectors and a 210 degree FOV curved screen. Because this necessitates three scenery windows open in P3D, laid down in surround mode, I am lucky to get to 30 fps (my limit) in all areas with most P3D settings at average.  Any performance improvements in P3D will just let me increase some of the settings, hopefully.

Pete

 

Nice cpu what vcore ? is it with ht off , my do that with aio 360 1.35v ht off 5.4ghz in p3dv4.5 with ht on

[cyyzrwy24 118]

3 hours ago, AnkH said:

Short answer: no, it is not worth the effort. Simply because it will not be that easy to get this 4790K at 4.8GHz stable. Instead adjust the settings to gain those 20% FPS, faster done and easier to achieve...

I share your opinion.....they gave us so many options with overclocking of GPU and CPU and it seems that opens endless possibilities to screw things up....Took me 5 years to figure that, once I changed everything to normal and to "factory settings", with exception on one add - on airport, everything is smooth. I am hoping it will stay that way. And I use more or less everything available on market.

[downscc 1,327]

Like Bob, I also had a 4790K at 4.7GHz on add-on CPU air cooler.  However, going to a 8th or 9th generation CPU, chip set and DDR4 makes a pretty big difference, one you can never achieve with a 4790K.

I have an 8700K at 4.8GHz and 3600 MHz DDR4 32MB DRAM and 1080Ti SLI, and I run smooth with a frame rate lock at 24 fps on a 41-in 4K TV with the high resolution terrain tweak.

[TravelRunner404 596]

10 hours ago, Pete Dowson said:

My 9900K is overclocked (with good cooling) to 5.5GHz, but I'm using P3D4 with 3 projectors and a 210 degree FOV curved screen.

Your 9900k is at 5.5 GHz? That's crazy.  You have a link to your PC builder?  

[vgbaron 3,491]

I run my 7700 at 5ghz - lock at 20 and it's smooth.

P3D much more than FSX is not really FPS centric - Think smooth not FPS.

Try to tune your system to the LOWEST FPS you can get while getting the SMOOTHEST performance.

Vic

[Pete Dowson 558]

5 hours ago, westman said:

Nice cpu what vcore ? is it with ht off , my do that with aio 360 1.35v ht off 5.4ghz in p3dv4.5 with ht on

It's not on at present, but I think it was at 1.39 or 1.395. I can check tomorrow and correct if not. Serious cooling though -- an external Koolance unit which has to be on for 15 minutes before powering up the PC else it will crash immediately it gets into Windows. And the room is air conditionaed to kee humidity steady to avoid condensation.

Temperature of the CPU even under really heavy loads is never more than 36C, and it is generaly around the 29 mark.

And that's with the cache at 5.0 GHz. the memory, 4500 MHz sticks, is down at 3600 MHz though, for increased stability.

1 hour ago, TravelRunner404 said:

Your 9900k is at 5.5 GHz? That's crazy.  You have a link to your PC builder?

A certain Rob built it and tuned it for me. Did a really good job. But he doesn't want to make a habit of it!

Pete

 

 

[itsjase 52]

I'm assuming your cpu has also been de-lidded?

[Shomron 251]

On 4/15/2019 at 12:43 PM, vin747 said:

My CPU: i7 4790K, 4 Ghz, turbo boost up to 4.4 Ghz

GPU: GTX 1070

16GB RAM

 

I want to know how much FPS will I gain from overclocking to say 4.8 Ghz at the most demanding situations (i.e. on final approach to EGLL/EHAM with ORBX OpenLC) ? 

If I'm getting an average of 20 FPS right now on approach to EHAM/EGLL on a PMDG 777, will a 20% increase from 4 to 4.8 give a 20% increase in FPS from 20 to 24 FPS?

1. Is that Math correct? Is it a simple linear thing like that or more complicated?

2. I'm guessing the overclocking will not solve the FPS fluctuations that are typical when you have a 60Hz monitor and the FPS jumps from 30 to 15 and back to 30.. If the average FPS stayed above 60, i can lock it to 60 FPS.. In AFS2, it stays solid at 60 or even 100 on approach to KLAX with ultra settings. 

3. Is that 4 FPS gain even worth the trouble of overclocking? Am i better off waiting for P3D V5 where hopefully they pull a rabbit out of the hat and do something with multicore/multithreading and give us a 60 FPS sim...

 

 

With turbo boost functionality is it correct to assume my CPU (I have the same as yours) is running at 4.4 Ghz when running P3D?

In other words I want to make sure I am achieving the maximum performance with this CPU w/o overclocking otherwise I will be motivated to overclock it as it will be considered going over the base frequency of 4.0 Ghz.