Where is the bottleneck?

Max-output · Apr 21, 2017

■ I'll start off with my specs,
Fx-8350 [overclocked to 4.4]
Gtx 960
4x 4gb of g skill ripjaws at 1866 cl9
Motherboard is a gigabyte 990fx
And a 650w psu

Now I just got a new gtx1060 for the gf computer.
It had a i-5 4460? I think
And 2 sticks of 8gb of ram running at 1600

So we started up arma 3 and I noticed she was completely running smoothly. So afters all done i throw the 1060 in my computer with no performance increase. At this point im scratching my head so i run a bunch of benchmarks on both of our computers to figure out my cpu is much better than hers but my ram is getting half the score hers is. So i throw her ram into mine and again the benchmarks stay the same. So now im thinking its the motherboard thats the problem but everywhere i check everyone says that the motherboard is 99% of the time not a bottleneck. So now im just trying to figure out how she got a better benchmark with the same ram that i got half the score in my rig. Any help is appreciated!

PS when i went into the bios i noticed my ram running at 1600 so i switched it to 1866 and it wouldnt post. So i pulled out the two oldest sticks and it posted just fine. Ran a benchmark it was actually slightly better than with the extra ram at 1600. Thought maybe that info might be pertinent

the nerd 389 · Apr 21, 2017

What resolution screens are you using?

LucoTF · Apr 21, 2017

The i5 is much better for gaming than the fx 8350

LucoTF · Apr 21, 2017

Arma 3 doesnt multithread well, its all about single core performance and the i5 stomps the fx in single core performance

the nerd 389 · Apr 21, 2017

LucoTF :

Arma 3 is pretty GPU bound. The CPU could potentially be worth a 5%-10% performance difference, but the AMD would still see a performance increase between the 960 and 1060.

See:
http://www.techspot.com/review/712-arma-3-benchmarks/page5.html

Max-output · Apr 21, 2017

the nerd 389 :

Just 1920 by 1080 nothin special

LucoTF · Apr 21, 2017

2fps difference between the 4 core and 8 core fx here: http://i.imgur.com/USKkvXQ.jpg

the nerd 389 · Apr 21, 2017

By those numbers, it sits between the i7-2600k and the i7-3930k. It's still competitive with the i5-4460 before the 10% OC.

the nerd 389 · Apr 21, 2017

Max-output :

Are both using the same driver?

Max-output · Apr 21, 2017

Yes same driver.

And to others, my question is why she is seeing better ram performance? I put her ram into my rig and got the same performance as my so called better ram. She is seeing double the ram performance with slower ram

the nerd 389 · Apr 21, 2017

So, you put her RAM in your machine, and there was no change?

That's to be expected. ARMA 3 isn't very dependent on RAM speed.

Regarding your comments on benchmark performance, if you're talking about synthetic benchmarks, be aware that they are mostly irrelevant to gaming.

If you're talking about the in-game benchmark, please clarify. It isn't clear what you're talking about.

Max-output · Apr 21, 2017

Im using performancetest benchmark for the ram. I only saw the problem while playing arma with her

the nerd 389 · Apr 21, 2017

Performancetest results are largely useless for the purposes of this discussion.

They don't correlate with actual performance in Arma 3. What are the frame rates you actually get in Arma 3 in each of the variations that you've mentioned?

They are:
- Unchanged RAM, Old GPU, Your Computer
- Her Computer, New GPU
- Unchanged RAM, New GPU, Your Computer
- Removed oldest 2 sticks of RAM, OC RAM, New GPU, Your Computer
- Using Her RAM, New GPU, Your Computer

Max-output · Apr 21, 2017

the nerd 389 :

I dont see a performace difference in any three configurations. Its always 20-30 fps very choppy with a lag spike now and then. Its also worth mentioning i get very good performance in almost all other games with some exceptions.

the nerd 389 · Apr 21, 2017

Are the settings the same?

Max-output · Apr 21, 2017

the nerd 389 :

Yes, if anything hers are better. I should clarify on this, this was tested in multiplayer, i get better preformance in single player but i already know this is a known problem with arma.

the nerd 389 · Apr 21, 2017

If I had to guess at this point, I would say that the CPU is the weak link.

Do you have two monitors on the AMD machine? If so, run Arma 3 on one screen, and run task manager in the second. If the CPU usage consistently hits 100% during the spikes, it's the CPU. If not, we keep looking.

Max-output · Apr 21, 2017

the nerd 389 :

I feel like ive done this in the past but will check when ive gotten home

Max-output · Apr 21, 2017

Its running at a smooth 25-30% when under load but single core looks more like 75

the nerd 389 · Apr 22, 2017

For that CPU, that can be a problem. However, it's not pegged at 100%, so the bottleneck is probably elsewhere.

Use a GPU monitor and do the same thing. (GPU monitor on one screen, game on other. Report the utilization.) If any of the GPU metrics are at 100%, let us know which one(s).

LucoTF · Apr 22, 2017

It's no secret that arma3 heavily favours the higher clocked intels.

Where is the bottleneck?

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