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Considering an upgrade

post #1 of 4
Thread Starter 
Hey guys, I just got my second 7970 and was not expecting my 930@3.8ghz to be this severe of a bottleneck. In metro 2033 bench I was getting as low as 50% gpu usage on each gpu and my overall score only went up about 30% from 1 gpu. Crysis is even worse, hardly changed at all, and bf3 is around 60-70% on each gpu. Maybe a 20-25% improvement.

I tried droppin my cpu from 3.8 to 2.7ghz to see if that was the prob and sure enough metro usage dropped as low as 30%.

Firstly I'd like to know (preferably from first hand experience) if it's normal for a 3.8ghz 930 to give this kind of performance? If I remember right a 2500k is only about 20 or 30% stronger then my cpu. So if my 930 can only manage 50% gpu usage then a 2500k wouldn't be strong enough either. Is there any CPU that can manage a solid 99% in crossfire 7970s?

If so I'd be willing to spend up to 3770k prices but would prefer to go with a 3570k if there's no performance difference in games? Or other options? (how does a 3570/3770k compare to a 2500k?)

I was hoping not to upgrade to another quad core and wait until 6 or 8 cores became common but it seems I may have to upgrade sooner.

Thanks for reading
    
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CPUMotherboardGraphicsGraphics
I7 4790k 4.7ghz Asrock Z97 Extreme4 Gigabyte G1 GTX 970 SLI @ 1590Mhz Gigabyte G1 GTX 970 SLI @ 1590Mhz 
RAMHard DriveHard DriveHard Drive
16gb GSkill Sniper 2200mhz Crucial MX100 256gb Samsung F3 1TB Samsung F3 1TB 
Hard DriveCoolingCoolingCooling
Seagate 3TB EK Supremacy Evo EK Nickel VGA Block x2 w/ Backplates Alphacool UT60 480mm Rad 
CoolingCoolingCoolingOS
Alphacool XT45 480mm Rad Dual D5 Pump w/ Dual Pump Top Gentle Typhoon AP-15s x18 Win 7 64 bit 
MonitorMonitorPowerCase
Qnix QX2710 1440P + 1080P IPS secondary Benq W1070 Projector on 120" Screen Seasonic Platinum 1200w Corsair 900D 
MouseMouse PadAudioAudio
Logitech G9X Mionix Propus 380 ATH AD700 Creative X-Fi Titanium 
Audio
Logitech X-530 
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post #2 of 4
If you are just gaing, I recommend the 3570K if you are buying new.

However IMO a used 2500K for the right price is far better price/performance.

Considering the differences in heat output, I would say the 2500K can generally OC to like performance ( a few hundred mhz above the IB counterpart. ).

better price/performance, if you can snag one at a good price.
post #3 of 4
Thread Starter 
Anyone? I've decided between the 3570k and 3770k. Really I just need to know of the 3770k will prove better at gaming? Need lots of power to drive my 7970s.
    
CPUMotherboardGraphicsGraphics
I7 4790k 4.7ghz Asrock Z97 Extreme4 Gigabyte G1 GTX 970 SLI @ 1590Mhz Gigabyte G1 GTX 970 SLI @ 1590Mhz 
RAMHard DriveHard DriveHard Drive
16gb GSkill Sniper 2200mhz Crucial MX100 256gb Samsung F3 1TB Samsung F3 1TB 
Hard DriveCoolingCoolingCooling
Seagate 3TB EK Supremacy Evo EK Nickel VGA Block x2 w/ Backplates Alphacool UT60 480mm Rad 
CoolingCoolingCoolingOS
Alphacool XT45 480mm Rad Dual D5 Pump w/ Dual Pump Top Gentle Typhoon AP-15s x18 Win 7 64 bit 
MonitorMonitorPowerCase
Qnix QX2710 1440P + 1080P IPS secondary Benq W1070 Projector on 120" Screen Seasonic Platinum 1200w Corsair 900D 
MouseMouse PadAudioAudio
Logitech G9X Mionix Propus 380 ATH AD700 Creative X-Fi Titanium 
Audio
Logitech X-530 
  hide details  
Reply
    
CPUMotherboardGraphicsGraphics
I7 4790k 4.7ghz Asrock Z97 Extreme4 Gigabyte G1 GTX 970 SLI @ 1590Mhz Gigabyte G1 GTX 970 SLI @ 1590Mhz 
RAMHard DriveHard DriveHard Drive
16gb GSkill Sniper 2200mhz Crucial MX100 256gb Samsung F3 1TB Samsung F3 1TB 
Hard DriveCoolingCoolingCooling
Seagate 3TB EK Supremacy Evo EK Nickel VGA Block x2 w/ Backplates Alphacool UT60 480mm Rad 
CoolingCoolingCoolingOS
Alphacool XT45 480mm Rad Dual D5 Pump w/ Dual Pump Top Gentle Typhoon AP-15s x18 Win 7 64 bit 
MonitorMonitorPowerCase
Qnix QX2710 1440P + 1080P IPS secondary Benq W1070 Projector on 120" Screen Seasonic Platinum 1200w Corsair 900D 
MouseMouse PadAudioAudio
Logitech G9X Mionix Propus 380 ATH AD700 Creative X-Fi Titanium 
Audio
Logitech X-530 
  hide details  
Reply
post #4 of 4
3570K will be more than sufficient.
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