E6600 or E6700 ?

[Nightprowler_77]

I`m about to order a Conroe from shg.no. What would be the best choise for getting highest clockresults on water? :fact:

[CedricFP]

Do the multipliers change between the two revisions?

[Nightprowler_77]

Does the E6700 clock better than de E6600? If so I think it`s worth the extra cash.

[mldj]

I think there is a difference in the multipliers between the E6700 (2,66 GHz = 10X266 Mhz) and the E6600 (2,4 GHz = 9X266 MHz).
Such low numbers (the multipliers) induce significant differences in OC results - this one step means from 266 up to 400 MHz. Of course I would love even a E6400@2,6 GHz (my future choice) :)

edit: up to 400 MHz for the first available Conroe MBs, and 433 MHz for D975XBX rev. 304. Maybe something better in Q3 2006...

[[XC]Atomicpineapple]

Its a tough question. We still dont know the max FSB the new Conroe capable boards will be able to run at. As a result we dont know the maximum theoretical clock speed for each CPU (eg if mobo tops out at 400MHz then E6600 max clock is 400x9=3.6Ghz E6700 is 400x10=4GHz and so on). We also dont know the limits of Conroe on water so we cant predict whether you're going to run out of cooling power or FSB first. Hence finding the optimum match is difficult.

However FCG reckons 4GHz on air is doable, but we've only seen 5GHz on LN2 (to my knowledge), so be conservative and say 3.7-3.8 on air so maybe 4.1-2 on water. Now 4.2/10=420MHZ FSB for the E6700 4.2/9=467MHz FSB for the E6600. Which, looking at those FSBs puts the E6600 beyond the max BIOS settable FSB range on the Bad Axe [(1333/4)*1.3]=433MHz<467 (yes I know clockgen is a different matter but its a pain, not really suitable for a daily rig).

As the E6600 requires an FSB which is too high for the Bad Axe, the only retail Conroe board available right now the E6700 is a logical choice.

[SMa]

I think with those low multipliers, and such a high FSB
a E6700 will certainly oc better and higher

I think the first load of motherboards will have their limit around 450-475MHz

[Waus-mod]

Its the price thats make's you want a 6600 or 6700.. i would take an 6700 due higher mhz and better mp.

But still. some boards will do 600fsb, so even a low mp wouldnt be a problem. But we still have to see what everything will bring.

[BlackX]

http://www.xtremesystems.org/forums/showthread.php?t=101129&page=2 E6700 has only 9x multi? is it just cpu-z misstake?

[jrw]

Why not wait till they actually have them in stock.

I predict its going to be a nigtmare for you when they push back the date for them for the fourth time...

[Durzel]

Its a tough question. We still dont know the max FSB the new Conroe capable boards will be able to run at. As a result we dont know the maximum theoretical clock speed for each CPU (eg if mobo tops out at 400MHz then E6600 max clock is 400x9=3.6Ghz E6700 is 400x10=4GHz and so on). We also dont know the limits of Conroe on water so we cant predict whether you're going to run out of cooling power or FSB first. Hence finding the optimum match is difficult.

However FCG reckons 4GHz on air is doable, but we've only seen 5GHz on LN2 (to my knowledge), so be conservative and say 3.7-3.8 on air so maybe 4.1-2 on water. Now 4.2/10=420MHZ FSB for the E6700 4.2/9=467MHz FSB for the E6600. Which, looking at those FSBs puts the E6600 beyond the max BIOS settable FSB range on the Bad Axe [(1333/4)*1.3]=433MHz<467 (yes I know clockgen is a different matter but its a pain, not really suitable for a daily rig).

As the E6600 requires an FSB which is too high for the Bad Axe, the only retail Conroe board available right now the E6700 is a logical choice.Great post. :)

[automagic]

E6600 = 9x
E6700 = 10x

[mldj]

@BlackX - I think he wanted to go 1:1 with his DDR2 - so he went down with the multiplier to reach higher FSB (he must have pretty good memory). But the E6700 has multiplier 10X

[Shpoon]

I dunno, this is like the Opty 170 vs 175, or 4400 vs 4600....it's the point where the price stops following a nice trend line and shoots up..

If you've got the money, why not go for it? If not, I'm sure the majority of us would be happy with ~4 on our E6600s ;)

[freecableguy]

here's how i have seen it pan out, now this could be due to early A1 vs. B0 stepping revision:
2.13 < 2.4 < 2.66 ~= 2.93

E6700 is the best price/performance (unless you want the unlocked multipliers and a chance for better silicon).

-FCG

[Flannelman]

But the real question is what about those of us on a budget who would like a decent overclocking system but don't want to spend the cash to get a E6600? How is the E6300/6400 going to fair? I'm not going to build till late fall/spring so things will have settled down more but could those chips turn into the new 2.4C? With the low price and the promise of decent Oc's I'd think that would be the way to go for the budget clocker even though they only have 2mbs of L2 it still should be quite fast. Thats just my .02 I'm not going to buy anything till it all settles down more.

[BlackX]

@BlackX - I think he wanted to go 1:1 with his DDR2 - so he went down with the multiplier to reach higher FSB (he must have pretty good memory). But the E6700 has multiplier 10X

Isnt it locked?