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i7 3770k Bottlenecking?

post #1 of 14
Thread Starter 
Hi, I just wanted to post these results because I am wondering if my CPU is bottlenecking the system. I have reason to believe it could be, but it might just be down to software issues.

Here is a test (Sleeping Dogs, 7970CF, Max out, 1080p)


Same test, CF off


Now this is what confuses me, listen to this,
If I run the CPU at 3.9Ghz, or 4.6ghz, the fps and cpu usage is the same. Would I not get an fps increase from OC'ing the CPU if the CPU was bottlenecking the GPU's? hhmmmm...... That makes me wonder.

Thank you for the help.
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post #2 of 14
Im no expert but thats how I was told to check for a bottleneck. Since you OCd and still get same FPS, that kind of proves that extra CPU power doesnt change anything, meaning there is no "bottleneck". Someone more experienced than me will surely chime in thumb.gif

Edit: is your GPU usage 100% during these tests?
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post #3 of 14
Thread Starter 
Quote:
Originally Posted by Shadow_Foxx View Post

Im no expert but thats how I was told to check for a bottleneck. Since you OCd and still get same FPS, that kind of proves that extra CPU power doesnt change anything, meaning there is no "bottleneck". Someone more experienced than me will surely chime in thumb.gif
Edit: is your GPU usage 100% during these tests?

97 usage is the highest reported, on both cards.
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post #4 of 14
Doesn't sound like a bottle neck to me. If you're going from 3.9 to 4.6 and there is no GPU usage change that pretty much tells you there is no bottle neck. thumb.gif Although it may not be an apples to apples comparison, when both of my GPUS are getting 99% usage in BF3 I get around 60-70% usage @ 4.8 on my CPU. Considering we have the same cards and you're getting almost the same usage and Ivy's 7-10% IPC improvement, it seems to look right to me.
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post #5 of 14
I have a similar problem. I just upgraded from an AMD X6 @4.0Ghz to an I7 3770K @4.0Ghz and I lost roughly 10~12FPS in Battlefield with the same GPU configurations. kookoo.gif

Edit:
I lost the same FPS in all the games I own when I switched...
post #6 of 14

Even if whatever test you're running is generating a CPU bottleneck, I can almost guarantee that no game can cause a bottleneck on a 3770k setup unless it's a rigidly single-threaded game like Cities XL 2012. In any case, those test results don't look like you're getting a bottleneck, particularly since OC'ing didn't make any difference.

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post #7 of 14
Thread Starter 
Thanks everyone. Here is my usage during the bench.
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post #8 of 14
Quote:
Originally Posted by auroraborealis View Post

Even if whatever test you're running is generating a CPU bottleneck, I can almost guarantee that no game can cause a bottleneck on a 3770k setup unless it's a rigidly single-threaded game like Cities XL 2012. In any case, those test results don't look like you're getting a bottleneck, particularly since OC'ing didn't make any difference.
While true in most practical applications, I think someone was benching quad fire 7970s @ 1500 core which was bottle necking a 3930k @ 5.1. But I do agree with you most even enthusiast setups will not be bottle necked by a 3770, especially one with a decent OC on it.
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post #9 of 14
Quote:
Originally Posted by auroraborealis View Post

Even if whatever test you're running is generating a CPU bottleneck, I can almost guarantee that no game can cause a bottleneck on a 3770k setup unless it's a rigidly single-threaded game like Cities XL 2012. In any case, those test results don't look like you're getting a bottleneck, particularly since OC'ing didn't make any difference.

^I agree with this statement.

IMHO it sounds like that game just isn't completely optimized for your hardware. Have you tried running those benchmarks with a single card yet as the problem may be CF related.
post #10 of 14
Thread Starter 
I just ran the bench again and the fps reduced by 2 on average when moving from 4Ghz to 4.5Ghz which makes no sence at all. Must be a setting in the game that uses too much CPU time for no reason.
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