no, he said:Originally Posted by Ghigo
no, you can only down clock, but if you increase the bclk, you ll get better OC by downclocking the mem ratio.
no, he said:
no, you can only down clock, but if you increase the bclk, you ll get better OC by downclocking the mem ratio.
I tested stability with an i7 920 under Noctua :
and screen to 4200mhz
Now i m testing Retail 965xe under aircooling
Last edited by Pt1t; 11-05-2008 at 02:09 AM.
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@ Pt1t
can you test max stable BCLK (with lower multiplier)?
Thanks
Chris
202mhz on X12 and 920 on air.@ Pt1t
can you test max stable BCLK (with lower multiplier)?
Thanks
Chris
QPI/VTT to 1.45v
IOH to 1.35v
with watercooling i think we can see 920 @ 4ghz stable (Without turbo boost activated)
Last edited by Pt1t; 11-05-2008 at 02:24 AM.
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ok, that is enough for me
btw Coolaler told me that the biggest memory multiplier is 1:7 on retail Core i7-920(940)
lol dude you better read the rules of this board, or i perdcit you go on vacation soon....
anyway... anyone else has the feeling that the 965 is waste of money this time for all none extreme ocers that use cascade or LN2?
If most of the boards can hit 200mhz bclk you get -> 4,0ghz and i think that you need super highend aircooling for that anyways or watter.
Last edited by Hornet331; 11-05-2008 at 03:06 AM.
on GA EX58 extreme and Asus R2E i can get max X6 and X8 ram ratio on 920.ok, that is enough for me
btw Coolaler told me that the biggest memory multiplier is 1:7 on retail Core i7-920(940)
I will test on eclipse as soon i can get it.
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x6 & x8 = 1:3 and 1:4?
do you have retail i7-920? ES are locked!
Does anyone know if we're going to see some cheaper boards before X-mas? Plan on upgrading but spending over €250 for a motherboard seems a bit to much :|
no , only ES 920
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then is 1:4 the highest divider / multi
offc, hamilton became WorldChamp in F1
Btw,the discussion about the FSB vs QPI hasnt been proven yet
i dont say i am right, frankly i dont know, but i havent seen any data contradicting with what i have said
Does anyone know max temperature?
Or max voltage for the CPU yet?
x264 Penryn vs. Nehalem clock-to-clock comparison:
http://i38.tinypic.com/161nvdh.png
Overall speed improvement around 40%
TjMax can be read from each Core i7 processor but when Core Temp 0.99.3 was originally released, I don't know if Intel had released that information yet. If you want to double check you can try using RealTemp 2.83 which I know reads that new information. Don't copy the new .exe into your old directory or it will use your previous TjMax values from your INI file.
From early testing it seems that the Core i7 has more real world temperature head room available. The previous Core 2 Duo based Quads tended to lose Prime stability when well overclocked at about 70C. I've already seen screen shots of Core i7 running Prime stable at 80C and 90C like Pt1t is running in his screen shot above.
If your Core 2 Duo was running Prime stable, temperature was never an issue and it appears for Core i7, it is even less of an issue. By all means, the cooler the better but if Intel didn't think these could run reliably at 100C then they would lower the TjMax and start thermal throttling 10C or 20C sooner to prevent this.
My only concern from the screen shots so far is excessive voltage. We won't know how much is too much until more retail processors start getting used and the "my processor degraded" reports start coming in.
Edit: Thanks to coolaler for showing us what Core i7 thermal throttling looks like.
http://forum.coolaler.com/showpost.p...8&postcount=12
RealTemp will log any thermal throttling episodes and it looks like core0 at 98C and core1 at 100C both hit the throttle. You definitely want to keep it below this level or else your multi will start to cycle down to 12.0 which will kill performance. Core2 and core3 both hit 93C which is still OK. No throttling has occurred on these two cores.
Good news is that it didn't crash.
Last edited by unclewebb; 11-05-2008 at 09:35 AM.
Now that is some nice voltage for 3.8ghz. Decent temps too, what cfm fam did you have on the noctua? Looks like air is ample for these chipsI tested stability with an i7 920 under Noctua :
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Last edited by Chri$ch; 11-05-2008 at 12:54 PM.
it was (on air) all full stable? Or only CPU-Z? What is max OC for work, gaming etc? 3.8Ghz?
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you actually cared to read or look at the screen?
he was running air -> Noctua cooler.
He ran a 920 @ 3,8 ghz with 1.294V primestable for 1:20h...
No one bothers to read anymore, they just want to see numbers or headlines like "Nehalem can't overclock."
he was running air -> Noctua cooler.
He ran a 920 @ 3,8 ghz with 1.294V primestable for 1:20h...
Same thing with previous extreme edition CPU's imo...
They (high/unlocked multi) were not needed to push the CPU's to their max on air/water.
This fan : http://www.matbe.com/images/biblio/a...0000078285.jpgNow that is some nice voltage for 3.8ghz. Decent temps too, what cfm fam did you have on the noctua? Looks like air is ample for these chips
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na there was quite a big difference between a Q9550 and a QX9650.
Q9550 only have a 8,5 multi -> for 4ghz you need a fsb of 470mhz, and not many P35/X38 did that with a quad.
Upon further thought you are right... Dunno what I was thinkingna there was quite a big difference between a Q9550 and a QX9650.
Q9550 only have a 8,5 multi -> for 4ghz you need a fsb of 470mhz, and not many P35/X38 did that with a quad.
a bit off topic but whats the measurement of motherboard mounting holes up to skt 775 are they wider apart if so by how much...thanks
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