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I5 2500k bottleneck for 7970?

If I u understand this correctly, it's not a bottleneck in the traditional sense it's a thread limitation? As I was also under the impression bf3 was highly multi threaded using 6 or 7 threads if available...
 
The 3930k is like tripple the cost of an i5 so i would expect some difference! I still think a second card would be better in this situation. Do games even utilise 6 core cpus yet? I see a lot that don't even use 4 cores.
 
I'm not seeing all cores or threads used ? I have two cores maxxed out and the others hover around half to a quarter ish or lower. ?

Both gpu's are pretty much maxxed all of the time at %99 (you never see %100)...
 
I've had a quick look around for cpu battlefield 3 multiplayer graphs and they seem in short supply.

This was all i could find

AsxQF.png


That shows close to what i saw in terms of the minimum fps gain.

Obviously the minimum is a lot higher but the res is a lot lower.
 
How? It shows different gains for a cpu on the same card...

Granted it's not a 7970 but it's the same testing method that's being discussed which shows more threads giving better min and avg.
 
Ok BF3 is now installed onto my Samsung 830 it was on a cached mech drive.

I have also dug out my windows 7 drive for a bit of a comparison between the two. I have checked and everything is up to date drivers game etc..

I'm going to try and make a 30 min video filming the FPS counter and then time lapse this into about 5 mins. This will show any drops over a 30 min period on a 64 player map everything identical other than the cpu's game at ultra/max settings 1080p 120hz with 4 x AA....

I must be bored...;)
 
I dont own an i7 but I remember reading disabling HT makes the game more smooth and less stutter. Not sure if A Patched fixed this, but it was awhile ago I dont think disabling it gives more FPS I think people where saying game stopped micro stuttering.

LtMatt said:
Yes SSD.



I've heard the complete opposite. I see all 8 threads being used nicely in battlefield 3, i can try and turn it off myself to see but ill be amazed if you get more performance in bf3 with it off.

Other games, sure but bf3 loves cores/threads.
Click to expand...
 
shankly1985 said:
I dont own an i7 but I remember reading disabling HT makes the game more smooth and less stutter. Not sure if A Patched fixed this, but it was awhile ago I dont think disabling it gives more FPS I think people where saying game stopped micro stuttering.
Click to expand...

I remember that, it was fixed a long time ago. :)

Very smooth here with HT on.
 
I'm almost thinking that the improvements the i7 bring might be more noticeable with a single GPU rather than a pair. With the pair the game is perfectly smooth over 70fps min on both cpu's.

Running with a single 7950 @ 1200/1600 shows noticeable drops in performance and small amounts of stutter, it's nowhere near as smooth as the dual card setup. It seems BF3 scales very well with a pair of GPU's..

Anyway time to start my testathon and see what it brings. The i7 is staying in my pc now so will test the i5 first...
 
weehamish said:
This is very strange and i partly believe all of you but moogley is the most recent and sounds right to me. I can find nowhere that says the i7 performs better then the i5 with games. People said you won't notice until Sli/cf but moogley is seeing no difference.

I also dunno how 4 more threads can do so much at certain points in one game. Its very puzzling.
Click to expand...

It's a very real phenomenon. :)

Odd but there. Just because you don't understand it doesn't mean it's not there. My theory is that because the load is not constant a sudden spike in CPU calculations which is split over 8 threads as opposed to 4 helps to keep thing running fast enough for the card to keep pumping out frames.

The i7 improved things considerably for me with multi cards. As I said, I felt a bump with single cards but didn't have the data to back it up.
 
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shankly1985 said:
I dont own an i7 but I remember reading disabling HT makes the game more smooth and less stutter. Not sure if A Patched fixed this, but it was awhile ago I dont think disabling it gives more FPS I think people where saying game stopped micro stuttering.
Click to expand...

That was before they fixed it.
 
Rusty0611 said:
The i7 improved things considerably for me with multi cards. As I said, I felt a bump with single cards but didn't have the data to back it up.
Click to expand...

I bloody hope so. I have been after a new CPU for a while and chose i7 over i5 because of the previous BF3 i5 vs i7 thread. (i7 showed much better minimums with high end setup)

I realise that I won't see any improvent at the moment as I only have a single card.
 
Just finished 30 mins with the i5 and dual cards....

So far from just watching the FPS it did not once drop below 68fps this was the lowest I viewed. The lowest was actually in a relatively quite part as well ?

I will review the video once complete and confirm this was the lowest. I think I have found the same location as the pics above as well..

Now to try the single card and i5 then onto the i7..

This is going to take a while... :D
 
We have been through this before, I can't remember who the user was.

Rusty might.

The i7 showed an advantage over the i5 on a high end (uber) system in BF3

I will be ill with it if this turns out to be lies.
 
I'm only doing my own testing because I can and I'm bored. I have nothing to gain or loose from it.

So far I cannot reproduce the drops seen above with an i5 @ 4.5ghz and a pair of 7950's @ 1200/1600..

The only thing so far of any value is a pair of 7950's makes quite a difference on either cpu and I'm awful at BF3.... :D
 
MOOGLEYS said:
I'm only doing my own testing because I can and I'm bored. I have nothing to gain or loose from it.

So far I cannot reproduce the drops seen above with an i5 @ 4.5ghz and a pair of 7950's @ 1200/1600..

The only thing so far of any value is a pair of 7950's makes quite a difference on either cpu and I'm awful at BF3.... :D
Click to expand...

@MOOGLEYS i'm glad that you are taking the time and trouble.

I tested FarCry2 with an i3 2120, hyperthreading showed a significant advantage.
 
MOOGLEYS said:
I'm only doing my own testing because I can and I'm bored. I have nothing to gain or loose from it.

So far I cannot reproduce the drops seen above with an i5 @ 4.5ghz and a pair of 7950's @ 1200/1600..

The only thing so far of any value is a pair of 7950's makes quite a difference on either cpu and I'm awful at BF3.... :D
Click to expand...

I'll be here sipping my drink while you do all the work :D
 
i5 2500k @ 4.5ghz single 7950 @ 1200/1600 Min of 39 fps, again will need to confirm and will update later...

Dual 7950's on the 2500K scales very well. A noticeably better experience than the single card.

Tea break and then in goes the 2700K (Again).....
 
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