[Denny]680i vs 975 mobo, which one is better choice?

[shogo_ca]

nice info, im planning to buy badaxe2 more and more..

[guess2098]

ok, let's compare with 975 and 680i with QX6700
Normally, QX6700 can't do high FSB with those two boards.
for 975, the average FSB for QX6700 is 350~380
and for 680i, averager is between 300 to 333



680i 3.85G 32M





975 3.85G 32M








680i 3.76G 3Dmark06





975 3.78G 3Dmark06





if you check my test very detail everytime, you will see that

1.For 3Dmark06, CPU score and SM3 score are 680i > 975, SM2 is 975 > 680i
2.FSB for 680i is not very important, you see, 29x FSB 680i has better 32M time and even 300 extra cpu score compare with 350FSB 975.......

[dinos22]

those are good comparisons

so are you saying 680i can clock RAM higher and at tighter latencies

[guess2098]

those are good comparisons

so are you saying 680i can clock RAM higher and at tighter latencies

with any FSB
you can do 400/1200, 352/1200, 533/1200, 111/1200, 23423/1200, xxxxx/1200

any kind of FSB you can do DDR2 1200.
but of cuz sometime is not 1200 but close (like 1181, 1192, 1179.. divider issue)

[dinos22]

with any FSB
you can do 400/1200, 352/1200, 533/1200, 111/1200, 23423/1200, xxxxx/1200

any kind of FSB you can do DDR2 1200.
but of cuz sometime is not 1200 but close (like 1181, 1192, 1179.. divider issue)

yeah i'm aware of that

i guess what you're saying is that with 680i you can ALWAYS max out your RAM regardless of FSB which is great heh

can you let us know if there is any difference in clocking RAM between 975 and 680i chipsets anyways

[guess2098]

yeah i'm aware of that

i guess what you're saying is that with 680i you can ALWAYS max out your RAM regardless of FSB which is great heh

can you let us know if there is any difference in clocking RAM between 975 and 680i chipsets anyways

like? sorry i am not quite get it!

i am trying to find the best FSB for 680i now


edit, just found out 1699 and 1700 are the breaking line
FSB 1699 are good and fast 32M but FSB 1700 (425) sux

[dinos22]

like? sorry i am not quite get it!

i am trying to find the best FSB for 680i now

i am asking if you can compare RAM overclocking on 975 vs 680 pls

[guess2098]

i am asking if you can compare RAM overclocking on 975 vs 680 pls

i did, max ram overclock with 2.7v on 975 is 108x CL4-4-3-x
on 680i 2.5v is 1200 CL4-3-3-x

[Dumo]

I got this....Not good 32m though

[guess2098]

I got this....Not good 32m though

actually very bad
the best clocking FSB is 1699, over 1700+ = bad
i wonder what is next max FSB, maybe 1999 or 2299.... but don;t think chipset can take it

[guess2098]

here is the proof that 1699 & 1700 FSB break line

1699FSB (424.7) fast 32M






1700FSB (425) slow 32M






anything above 1700+ are kinda useless now

[guess2098]

here is 1T max overclock vs 2T max overclok on ram in 680i

1T 850 3-3-3 2.5v







2T 1274 5-4-3 2.5v









btw pulling memory and lower latency = useless too...
not even 1sec gain from 1200 4-3-3 to 1274 5-4-3

[sierra_bound]

Nice comparisons. But 1.7v seems like a lot for 3.8GHz. Of course Asus Probe is usually not very accurate.

[guess2098]

Nice comparisons. But 1.7v seems like a lot for 3.8GHz. Of course Asus Probe is usually not very accurate.

well, this CPU does 1.55v 4G 32M
but just lazy to change vcore... hahaha

[dinos22]

looks like the bios needs some work for RAM to be tweaked better