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i5 750 Overclocked to 3.6 Ghz bottleneck?

post #1 of 15
Thread Starter 
Hi everyone,

I need your knowledge about my current setup. My question is: if I currently have an i5 750 @ 3.6Ghz with a GTX 570 and 8 GIG Memory, what can bottleneck my system?

I ask this because when I try to play games in 3D (ex.: Batman Arkham City, Battlefield 3, SWTOR, etc), I do not have a good FPS=> 30-40 FPS. I know 3D asks a lot, but even while playing none 3D, I have a hard time playing at high FPS with ultra settings (I like Ultra settings!).

What I was thinking was to change my CPU to a new 2nd generation i5 2500K with a SSD(about time I get one tongue.gif) and when Nvidia sells their new Kepler GPU, I get the GTX680.

Maybe you guys think that a i5 750 well overclocked is more than enough, I don't know. Please share your knowledge.

Thank you.

PS: Please keep in mind that when I ask if it is worth it, I mean that I need every bit of power possible. I like to put AA on top of ultra settings. For me, not worth it means I will literally get no increase in performance.

Sorry if my sentences make no sense, I am a french canadian.
post #2 of 15
Well if you play BF3 maxed out, especially with 4x msaa, a gtx 570 is going to bottleneck it and you will be around 40fps with stuttering.

And playing in 3d basically cuts your frame rates in half.

Your cpu is not the problem at all. It is your gpu. You will definitely need a more powerful gpu if you intend to max out settings @ 1080p resolution and with the AA cranked up.
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post #3 of 15
Thread Starter 
Thanks for the fast respond,

But just out of the curiousity, why did you get an i5-2500K? Did you upgrade from a worse CPU than mine?

That's what I though too about my games being bottlenecked frown.gif
post #4 of 15

I can't help but mention that 3.6 on an i5-750 really isn't that much of an overclock anyway considering that it can turbo boost to 3.46 at stocktongue.gif I agree with icehotshot that your GPU is definitely a bottleneck but if you can, it wouldn't hurt to try and take your overclock a bit higher.

post #5 of 15
Quote:
Originally Posted by yoofy View Post

Thanks for the fast respond,
But just out of the curiousity, why did you get an i5-2500K? Did you upgrade from a worse CPU than mine?
That's what I though too about my games being bottlenecked frown.gif

Yes, I upgraded from my 4 year old Core 2 duo E6750.
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Obsidian Series® 750D Airflow Edition Zowie FK 2 Speed by Surface/Steelseries SX/Steelseries 9HD 
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post #6 of 15
Thread Starter 
And if I tell you that I can upgrade my cpu & mobo & memory & ssd for just 300$ since my father is buying my old gear for 400$. Would it be worth it or should I wait for a new generation of cpu?
post #7 of 15
Quote:
Originally Posted by yoofy View Post

And if I tell you that I can upgrade my cpu & mobo & memory & ssd for just 300$ since my father is buying my old gear for 400$. Would it be worth it or should I wait for a new generation of cpu?

In my opinion I would say that you could use a gpu upgrade far more than a cpu upgrade. But, buying a 2500k/2600k + an ssd is not a bad decision if you have the money. But do realize that if you upgrade your cpu, you would probably not notice any difference in gaming performance as your gpu is the bottleneck.

If you have the money, upgrade your cpu now and then your gpu when the gtx 680 is released. wink.gif If not, then just wait to upgrade your gpu.
Edited by icehotshot - 2/13/12 at 9:26am
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Obsidian Series® 750D Airflow Edition Zowie FK 2 Speed by Surface/Steelseries SX/Steelseries 9HD 
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Core 2 Duo E6750 Asus P5n32-e SLI EVGA 8800gt superclocked @ 750/725 gaming/folding 4gb Fatal!ty ddr2 800 
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64gb SSD Stock Win 7 64 bit Corsair CX500 
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Hard DriveCoolingOSPower
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Obsidian Series® 750D Airflow Edition Zowie FK 2 Speed by Surface/Steelseries SX/Steelseries 9HD 
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64gb SSD Stock Win 7 64 bit Corsair CX500 
Case
NZXT 
CPUMotherboardGraphicsRAM
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post #8 of 15
Thread Starter 
Haha Icehotshot,

That is exactly what I was thinking, I have the money for that. Upgrading my cpu now and then buying the new GTX680 when it gets out. My only concern was about buying the best cpu possible right now. I've read that HT is not used by games so that's why I though the i5-2500K was a good idea. About the i7-3930k it seemed like just too much money for the performance gained. What do you think?
post #9 of 15
You are correct hyperthreading is useless in games.

If you could, I would wait for Ivy Bridge to be released as it should be released in a month or two and get a 3570k which is the 22nm version of the 2500k, so it should overclock higher and run a lot cooler. But either way there isn't going to be much performance difference between a 2500k and 3570k, maybe 10%, but in games you probably wouldn't notice it because the gpu would be the bottleneck.

And as for the 3930k, of course it is technically better, but the only difference is that is has 6 cores, HT, 40pcie lanes, and quad channel memory. Quad channel memory does not have any advantage over dual channel memory for gaming purposes, and the 40 pcie lanes are really only useful if you are going to run 4 gpu's. You might squeeze out 1-2 fps more in cpu bound games with a 3930k which imo is not worth it if you are mainly gaming.
Edited by icehotshot - 2/13/12 at 9:44am
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2500k @ 4.6ghz,1.47v 24/7 GIGABYTE GA-P67A-UD4-B3 $200 EVGA GTX 970 SSC @ 1505mhz 16gb 2400 SuperSC DDR3 
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960gb Sandisk Ultra II Corsair H100i v2 Windows 7 64-bit SeaSonic X650 Gold 
CaseMouseMouse Pad
Obsidian Series® 750D Airflow Edition Zowie FK 2 Speed by Surface/Steelseries SX/Steelseries 9HD 
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Core 2 Duo E6750 Asus P5n32-e SLI EVGA 8800gt superclocked @ 750/725 gaming/folding 4gb Fatal!ty ddr2 800 
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64gb SSD Stock Win 7 64 bit Corsair CX500 
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SB goodness
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CPUMotherboardGraphicsRAM
2500k @ 4.6ghz,1.47v 24/7 GIGABYTE GA-P67A-UD4-B3 $200 EVGA GTX 970 SSC @ 1505mhz 16gb 2400 SuperSC DDR3 
Hard DriveCoolingOSPower
960gb Sandisk Ultra II Corsair H100i v2 Windows 7 64-bit SeaSonic X650 Gold 
CaseMouseMouse Pad
Obsidian Series® 750D Airflow Edition Zowie FK 2 Speed by Surface/Steelseries SX/Steelseries 9HD 
CPUMotherboardGraphicsRAM
Core 2 Duo E6750 Asus P5n32-e SLI EVGA 8800gt superclocked @ 750/725 gaming/folding 4gb Fatal!ty ddr2 800 
Hard DriveCoolingOSPower
64gb SSD Stock Win 7 64 bit Corsair CX500 
Case
NZXT 
CPUMotherboardGraphicsRAM
Intel Pentium E6300 MSI G41M4-F GTX 460 2gb A-data ddr2 800 
Hard DriveOSPowerCase
150gb raptor Ubuntu 13.04 64-bit Coolmax 520W NZXT 
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post #10 of 15
Thread Starter 
I've made my choice, thanks for helping btw. I've read about the new ivy bridge comming soon and it is exactly what I was waiting for, a new CPU to replace my old one. I know that gaming might not have a big impact, but I am using my CPU for other application as well and it will help then. Anyway I kind of like just improving my computer :). Thanks again.
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