Battlefield 3 fps with r9 270

Boricko · May 25, 2014

Hello all, as the title say i have a question about BF3 fps. Well, yesterday i changed my HD 7770 OC, and got new gpu sapphire r9 270 dual x. With 7770 and Athlon II x4 750k i played BF MP on medium, no aa, and i had not so good fps. In area with less details, buildings, soldiers i had about 60-75 fps, but when theres big mess, explosions, many soldiers, actions, my fps would drop down to ~32. Now i got r9 270, and same happens, but on high preset, with 2x aa, and turning aa off, doesnt give visible performance, about 3-4 fps.. So i wonna ask, should it work like that? I was hoping minimum 60 fps in big action areas, but it still drops to ~34-5. So does something blocking my hardware to give its max, or i was expecting so much? My resolution is 1440x900 and i have 4GB of RAM. Thanks in Advance, and sorry for mistakes in language

4745454b · May 25, 2014

The 270X is the 7870. So the 270 is probably similar to the the 7850. This is only one (or if you consider the 7790, 1.5) cards above what you already had. If I read it right you did move from medium to high so it is running better. But it's not much of a step up from what you already had.

swifty_morgan · May 25, 2014

you uninstalled the drivers/pulled your old card-put in new-rebooted and reinstalled drivers?

go to windows updates.

Sakkura · May 25, 2014

4745454b :

The R9 270 is a rebadged 7870, just like the 270X.

Boricko · May 25, 2014

@4745454b Well i was reading around, checking comparisons, and r9 270 is around 44% better than old 7770.
@swifty Yeah, uninstalled old, cleaned the rest with driver sweeper, after puting new card, installed fresh drivers.
EDIT: Can it be only 4GB of RAM?

4745454b · May 25, 2014

Interesting. I see that now. Was I right that you bumped the details up? Put it back to the same settings as you had for the 7770. How much of an increase do you get?

Boricko · May 25, 2014

@4745454b Yeah, i bumped it to high with new card. Ill try now with old preset, updating here in couple of minutes.

EDIT: Well, on medium preset, like i played with 7770, it gives ~15 fps more now.

photonboy · May 25, 2014

1) You got HIGHER settings with a better graphics card. That's fine.

2) The SAME frame rates on the low end are due to the CPU bottleneck.

I've seen an i5-4670K use 90% of its processing power for BF4 and your CPU has less processing power. In Multi-Player. You may have seen benchmarks that indicate little CPU bottlenecking but those are likely Single Player.

3) MANTLE:
Have you tried Mantle? It's main advantage is to use less CPU cycles so it should perform better at points where there is currently a CPU bottleneck with the DirectX version.

Boricko · May 25, 2014

photonboy :

Yeah, but im talking about BF3

4745454b · May 25, 2014

15 more frames at 60FPS is a 25% boost. Was that with AA on? you said earlier that turning off AA would give you another 3-4 so that could be ~20FPS more, that's 33% faster. Not as much as the 44% you were hoping for, but with the slower CPU it's probably the best you can get. Now you know what your next upgrade needs to be.

Boricko · May 25, 2014

4745454b :

Well for example, on the place where i had 43-5 fps, now with same preset, no aa ofc, i have around 54-6. So CPU is a little devil making problems? Should Turbo mode do the things? I thought it is RAM cause its only 4GB. btw im also using lower resolution than they show in benchmarks, and theres similar fps :S

unksol · May 25, 2014

then you are most likely CPU bottlenecked. RAM is not really relevant

Boricko · May 25, 2014

Anyway, shoould triplebuffering be enabled or not(im not using vsync) And what is default value for renderaheadlimit?

Sakkura · May 25, 2014

Triple buffering is meant for use along with Vsync.

HardwareGTX · Jul 15, 2014

photonboy :

Wow that is the most idiotic thing I have ever heard! Even a old i5 750 or even the dual core i5 650 is more than enough CPU to run BF4 and a 7870/R9-270, Or even a GTX 780 /R9 270 setup, A i5 is more CPU than anyone needs to run any game out today and then some. This is why people are still using 1st gen i5's, If you are getting that much CPU usage you have something wrong with your software. You are confusing this person badly.

Sakkura · Jul 17, 2014

HardwareGTX :

BF4 is quite CPU-intensive in multiplayer. It's usually tested in singleplayer, where the CPU load is minimal. That's why you're confused.

4745454b · Jul 17, 2014

As mentioned before, we are talking about BF3 here.

Hello all, as the title say i have a question about BF3 fps.

Not found of HardwareGTX's reply. Lets keep it civil without name calling.

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