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Will overclocking a X4 820 to 3.2ghz or 3.4ghz match the performance of a 955,965,ect

post #1 of 11
Thread Starter 
If i overclock an X4 820 to 3.4ghz, will it roughy equal a 965? if i got to 3.6 will it equal a 975? ect. im trying to figure out if i should stick with ocing the 955 or go 820 and put the money into mabey 1600mhz cas 7 ram instead of 1333 cas7...

i am goingto do this on a ASUS M4A79XTD EVO mobo
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post #2 of 11
Pretty much, the 2MB L3 cache difference would be pretty small because most apps don't see difference with L3
1333 CL7 RAM is mainstream in terms of performance but fine, you should try overclocking that kit and see how far it goes first before considering buying a different kit
post #3 of 11
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Quote:
Originally Posted by xd_1771 View Post
Pretty much, the 2MB L3 cache difference would be pretty small because most apps don't see difference with L3
1333 CL7 RAM is mainstream in terms of performance but fine, you should try overclocking that kit and see how far it goes first before considering buying a different kit
ok thanks. how far do you think i could go on that mobo, AS5, and a CM Hyper 212+? just a guess
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post #4 of 11
Knowing C2 revision limits, and that you have your RAM running at 1600Mhz... I'd think around 3.75-3.9Ghz (300 bus clock x 12.5 CPU multiplier) CPU, 2700Mhz northbridge (300 x 9) and 1600Mhz RAM (300 x 5.33) would be feasible. 300 bus clock should be where you ad so that RAM runs at exactly 1600Mhz and northbridge as high as possible. You'll want to work on getting bus clock to 300 first (while lowering multipliers on everything else to keep them at stock) then raise the multipliers to begin the OC-ing.
post #5 of 11
Thread Starter 
Quote:
Originally Posted by xd_1771 View Post
Knowing C2 revision limits, and that you have your RAM running at 1600Mhz... I'd think around 3.75-3.9Ghz (300 bus clock x 12.5 CPU multiplier) CPU, 2700Mhz northbridge (300 x 9) and 1600Mhz RAM (300 x 5.33) would be feasible. 300 bus clock should be where you ad so that RAM runs at exactly 1600Mhz and northbridge as high as possible. You'll want to work on getting bus clock to 300 first (while lowering multipliers on everything else to keep them at stock) then raise the multipliers to begin the OC-ing.
oh ok thanks +1. also just wondering about how much time on OCCT3 is good to determin if its stable?
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post #6 of 11
I'm not too sure actually, I don't usually use OCCT for testing. 1 hour?
post #7 of 11
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Quote:
Originally Posted by xd_1771 View Post
I'm not too sure actually, I don't usually use OCCT for testing. 1 hour?
thats what i hear alot so i thought it would be good but again there are people that do it for days...
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post #8 of 11
Most users I think run it over night, if its still running it should be ok, however there are some users that will do it for 3+ days

I would say its down to preference, good luck on the OC!
    
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post #9 of 11
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Quote:
Originally Posted by TheReciever View Post
Most users I think run it over night, if its still running it should be ok, however there are some users that will do it for 3+ days

I would say its down to preference, good luck on the OC!
thanks!
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post #10 of 11
Thread Starter 
also i decided to go with the 955 just so it will oc better. i didnt
buy the ram YET, so should i oc a cas 7 1333 to 1600 or buy cas9 1600? im thinking i might be able to push cas8 when ocing the 1333. (if im wrong, ive never oced ram b4, dont know much about it)
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