BF3 CPU bottleneck? Really?

[1b0b1]

Originally Posted by 2is

Well, you never disagreed... You just got confused and needed it spelled out.

Dude, I am trying to be nice with you and not to get into any negative conversations. So please lets end this and stick to the point

[Jodiuh]

I'm bringing this back to see if any solutions have been found.

PC:
i5 760 @ 3.8 Ghz
GTX 660 SLI

B2K maps are def the worst, dipping down to 35 from 70~80. GPU usage gets as low as 30% on both cards. There's a post on Guru3d that recommends running mesh on medium. I'll try that tonight.

I was playing that oil pipeline map in the End Game expansion w/ 95% usage across both GPUs.

[Termie]

Originally Posted by Jodiuh

I'm bringing this back to see if any solutions have been found.

PC:
i5 760 @ 3.8 Ghz
GTX 660 SLI

B2K maps are def the worst, dipping down to 35 from 70~80. GPU usage gets as low as 30% on both cards. There's a post on Guru3d that recommends running mesh on medium. I'll try that tonight.

I was playing that oil pipeline map in the End Game expansion w/ 95% usage across both GPUs.

That is because you're completely cpu limited. B2K maps are different from all the others, and you have way more GPU power than your cpu can handle.

I dip below 90% gpu usage all the time with a single 670, and my cpu is a lot faster than yours.

[inf64]

Yep, definitely B2K is the worst of the expansion packs when it comes to HW optimization. I gained like 50% more fps when I switched from X4@3Ghz to PD based X4 @ 4.3GHz (2 modules!) on B2K maps! It's night and day now and my GPU stayed the same- Radeon 6870.

[2is]

B2K maps have more destruction than the vanilla maps and are heavier on the CPU. I'm inclined to agree with the posts above mine that its a CPU bottleneck and not likely a fixable game bug that can be addressed by changing graphics settings, unless that setting also lowers CPU load by a decent amount.

[Jodiuh]

Originally Posted by Termie

That is because you're completely cpu limited. B2K maps are different from all the others, and you have way more GPU power than your cpu can handle.

I dip below 90% gpu usage all the time with a single 670, and my cpu is a lot faster than yours.

It'll have to wait for Haswell then.

[moonbogg]

Originally Posted by Jodiuh

It'll have to wait for Haswell then.

Don't get your hopes up. Haswell, even when OC'd, will not cure the problem you are describing. I have a 3930k @4.3 and two 670's and I would need about 60% more CPU power to get full video card usage on those maps. Thats not going to happen with haswell, but from what you have it will be much better.

[2is]

Compared to an i5 760, an i7 Haswell should provide for a very nice boost. While it may or may not push a pair of 670's to 99% utilization 100% of the time in BF3, it would certainly give him far better minimums than he's seeing now.

[moonbogg]

Originally Posted by 2is

Compared to an i5 760, an i7 Haswell should provide for a very nice boost. While it may or may not push a pair of 670's to 99% utilization 100% of the time in BF3, it would certainly give him far better minimums than he's seeing now.

Yes it would be a big upgrade and well worth it IMO.

[Jodiuh]

Originally Posted by moonbogg

Don't get your hopes up.

We'll have BF4 by the time I get comfortable w/ Haswell. I've got 1/3rd of my hopes in a new CPU upgrade, 1/3rd of my hopes in BF4, and 1/3rd of my hopes in GRID 2.