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worth upgrading from e6400 to e8400?

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January 30, 2008 2:11:53 PM

i have my e6400 chip overclocked to 2.66ghz, so would i see a significant increase in performance in games like Crysis and Unreal Tournament 3 if i were to upgrade to an e8400?

i'm also using 3 gigs ram, and 8800gt video card.

More about : worth upgrading e6400 e8400

January 30, 2008 2:21:22 PM

Well, firstly, are you sure 2.66GHz is as high as your E6400 will go? Most can do 3.2GHz+ quite easily.

A stock E8400 wouldn't be much faster, but overclocked to 4GHz should see some tangible improvements.

That said, Crysis and UT3 performance still depends largely on the GPU you have. At higher resolutions, CPU speed only has a marginal impact on performance.

What GPU do you currently run?
January 31, 2008 4:51:54 AM

yes!

you need to right mobo to get the 4ghz

i run e6400 and e6420's at 3.4ghz = 425fsb with 1066 ram

drop in the E8400 and run 4.2ghz!

even if you ran your cpu at 3.4ghz you want the E8400 - i have one running at 4.2ghz. its much much faster!

even at 4.25ghz its not much hotter then 6000's at 3.4ghz
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January 31, 2008 9:15:39 AM

xanaty said:
i have my e6400 chip overclocked to 2.66ghz, so would i see a significant increase in performance in games like Crysis and Unreal Tournament 3 if i were to upgrade to an e8400?

i'm also using 3 gigs ram, and 8800gt video card.


Maybe UT3, but not Crysis. Also, just like Epsilon said, you should be able to overclock E6400 to 3.2Ghz with voltage at 1.4V. If you manage to overclock E6400 to 3.2Ghz, you'll actually see more performance than E8400.
January 31, 2008 10:30:00 AM

I would say it's worth it as long as your motherboard and ram are up to the higher fsb speeds. From what Ive seen most will hit 3.6 (400 fsb) with stock volts and heatsink. with a moderate bump in volts and good cooling 4.0 (450 fsb) is quite realistic. Going above that depends on how good of chip you get and how much voltage you are willing to give it.

I have a decent chip and can do 4.05 @ 1.26 vcore and 4.2 @ 1.32 (which is about as high as I feel comfortable with).

Quote:
If you manage to overclock E6400 to 3.2Ghz, you'll actually see more performance than E8400


I really doubt that considering the 2m vs 6m cache and added memory bandwidth of the 8400 along with the other minor tweaks Intel made to the core. Also why would you compare an OCd chip to a stock one. If a person is going to clock one they will most likely clock the other also. Getting the 8400 to 3.6~3.8 is no harder than setting the fsb 400~422 (as long as MB and ram are up to it).

Here is a page from Xbits review of the new Wolfdale chips which shows some of the gaming differences. And remember the 6850 and 8400 are the same clock speed and that the 6400 has half the cache of the 6850.
http://www.xbitlabs.com/articles/cpu/display/intel-wolfdale_7.html
January 31, 2008 10:48:01 AM

not really. the difference is cache mostly.

for gaming, GPU is more important
!