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Q6600 vs E8400 for SLI

post #1 of 7
Thread Starter 
I have 2 GTX 460s in SLI and was wondering which cpu I should use to bottleneck it less. I don't think I need to upgrade to the i5/i7 yet since everything is running fine but I'm planning on doing some tests with the H70 and CM 212+ with noctua and gentle typhoon fans to see which one gives better temps. While I'm switching the coolers around, I thought I might change the cpu to something that will bottleneck less or increase performance some more.

My Q6600 can only go up to 3.1 ghz at 1.4 volts. I tried to up the vcore to 1.5 and bump up the fsb but it's not stable at 3.2. The temps are fine (around 60 load). I tried to increase the voltage for the northbridge and the southbridge but it still wouldn't be stable at 3.2. The ram is unlinked and the timings are increased above their stated speed.

My E8400 went to 4.1 on my old EP35 DS3L at 1.32 vcore but I haven't tried it on the 750i board yet. I'm pretty sure I can get it to 4.3 or so with more voltage.

The things I do most on the computer is a little photoshop and gaming (Black Ops etc). Thanks for any help.
Edited by Launcherstrike - 2/6/11 at 2:17pm
:]
(13 items)
 
  
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Q6600 @ 3.1GHz EVGA 750i FTW GTX 460 SLI 1GB Crucial Ballistix 2x2gb 
Hard DriveOptical DriveOSMonitor
Hitatchi 1TB Samsung Windows 7 64bit Asus VW222U 22" 
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:]
(13 items)
 
  
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Q6600 @ 3.1GHz EVGA 750i FTW GTX 460 SLI 1GB Crucial Ballistix 2x2gb 
Hard DriveOptical DriveOSMonitor
Hitatchi 1TB Samsung Windows 7 64bit Asus VW222U 22" 
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Corsair HX750 Lancool K62B 
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post #2 of 7
Both cpus at stock speeds will definitely cause a big bottleneck. The q6600 is a bit old and needs to be at ~3.5ghz or more to lessen the bottleneck, but it could still be there. The e8400 is quite a bit faster than the q6600 processor in games that support only dual core, but for games that support 4 cores well, the q6600 will do a better job at that, usually. The e8400 has higher clock for clock, but is still a dual core. Even if you got it to 4.5ghz, there would still be a bottleneck for 460 sli. Also, more games are requiring quad cores to run well, and quad cores will run applications like Photoshop better than dual cores.

Since you play newer games, and do photoshop, i would try to get more of an overclock with the q6600 and keep that. If you can afford the money, i would get an i5 or i7 though. You would have no bottleneck, and would be a very nice upgrade from your current processor, and would get all your moneys worth since your performance from your 460s would not be held back in games.
My System
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e8400 underclocked @ 1.91ghz evga 780i sli sli 9800gtx+ 4gb corsair ram 800mhz 
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seagate 500gb hp w2207h silverstone op750 antec 900 
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My System
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e8400 underclocked @ 1.91ghz evga 780i sli sli 9800gtx+ 4gb corsair ram 800mhz 
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seagate 500gb hp w2207h silverstone op750 antec 900 
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post #3 of 7
Thread Starter 
I'd like another opinion before switching out the coolers. Thanks for the reply but I'm really tempted to switch it to the E8400.
:]
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.1GHz EVGA 750i FTW GTX 460 SLI 1GB Crucial Ballistix 2x2gb 
Hard DriveOptical DriveOSMonitor
Hitatchi 1TB Samsung Windows 7 64bit Asus VW222U 22" 
PowerCase
Corsair HX750 Lancool K62B 
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:]
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.1GHz EVGA 750i FTW GTX 460 SLI 1GB Crucial Ballistix 2x2gb 
Hard DriveOptical DriveOSMonitor
Hitatchi 1TB Samsung Windows 7 64bit Asus VW222U 22" 
PowerCase
Corsair HX750 Lancool K62B 
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post #4 of 7
why not getting an 9550 or 9650 and put it to 4+ghz ?!.. 9650 should be bout 280 €in a regular online shop.

another idea is to get a qx9650 with free multiplier directly from singapore/wherever it is over ebay for something more than 300 €.. it has 12mb cache and you could oc it with a lil bit luck to 4.5+ ghz
post #5 of 7
Quote:
Originally Posted by smex View Post
why not getting an 9550 or 9650 and put it to 4+ghz ?!.. 9650 should be bout 280 €in a regular online shop.

another idea is to get a qx9650 with free multiplier directly from singapore/wherever it is over ebay for something more than 300 €.. it has 12mb cache and you could oc it with a lil bit luck to 4.5+ ghz
wow.... if he does not want to upgrade to a i5 or i7 why would be pay 300$ for a out of date cpu?/./....
post #6 of 7
i was only thinking about the cpu/gpu relation. i think the e8400 with more than 4ghz would be a good solution too, but it still will b-neck the e8400 due it´s cache compared to 2mb cache. the e8400 is about 150$, so i thought the tolerance to 300 would be fine, to get a cpu that is really fitting to the 480 sli sys.

but ok opinions and demandings can be different
post #7 of 7
Q6600 becuase i have one!!! justkidding

I notice more and more games use more cores and i belive for the things you do utilizing more cores is better
Flowa's Rig
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Q6600 OC'd @ 3.4 ASUS P5E LGA 775 Intel X38 EVGA Gtx 570 CORSAIR 4GB 
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Vrapter 300Gb Cheap Samsung 25 dollar one Vista 64 bit ultimate 2X Dell 23" 1920 x 1080 
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Flowa's Rig
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Q6600 OC'd @ 3.4 ASUS P5E LGA 775 Intel X38 EVGA Gtx 570 CORSAIR 4GB 
Hard DriveOptical DriveOSMonitor
Vrapter 300Gb Cheap Samsung 25 dollar one Vista 64 bit ultimate 2X Dell 23" 1920 x 1080 
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RAZER Lycosa PC Power & Cooling PPCS750QBL Silencer 750W Quad B 800D RAZER Deathadder 
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Cheap 5 dollar Mouse Pad 
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