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Intel Core i3/i5/i7 & LGA-1156 Club & Discussion - Page 34

post #331 of 1646
Quote:
Originally Posted by trippinonprozac View Post
sorry mate, was this aimed at me?
No. I was responding to all the noise about the socket burn issues on the lower end P55 mobos. Sorry for the confusion, I forgot to quote the response.

However...congrats on the real nice OC

Quote:
Originally Posted by dham View Post
Honestly I think they're blowing it out of proportion.
Agreed! I feel the same way.
Edited by drBlahMan - 10/15/09 at 3:53pm
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post #332 of 1646
haha no worries mate.
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post #333 of 1646
oh and thanks!
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post #334 of 1646
Thread Starter 
Quote:
Originally Posted by Mikecdm View Post
I thought that the i7 and i5 were pretty much the same thing with the exception of hyper threading?

I realize that you vcore is higher than mine, that's what makes it more impressive. My load vcore is 1.37v and my temp's maxed out at 67°c while yours maxed at 65°c.
Odd, my maximum temperature maxes out at 71c (1.36v) using my Noctua air cooler, I would have thought that your GTZ will bring down the temperature much more than that... Odd...
     
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post #335 of 1646
I'm picking my processor up today after work, and I should be getting my RAM and motherboard tomorrow, I can't wait to get it all together.
    
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post #336 of 1646
Quote:
Originally Posted by dham View Post
yea the mosfets too. I read it.

Its a couple of guys. Thousands and thousands of people bought these boards and chips.
The few people who experienced it only noticed because they switch CPU's alot, even though the damage was done some of the boards/CPU were still running fine. So the only way you would know is if you removed everything after installing and checked. How many people do you think have double checked? Not many.

Don't get me wrong, Im not trying to scare monger or bash 1156, I just think people should be carefull, especially with that 1156 i5/i7 stability thread..

A few of quotes from raju at XS for those who don't feel like reading the full thread.

Quote:
I should add at this point, if you run 8 thread Linx over 4.4GHz at ambient temps the power draw of some CPU's is very much the same as what I was pulling at near 5.2 @ -100. Only you don't have the luxury of the cooling preventing a serious burnout. So next time one of the stability boys harps on about needing to see 8 hours of Prime etc on 4.3GHz + OC's using the i5 platform , tell him to 'F*** O**!'.
Quote:
VID under load was 1.57V for 5.19GHz. It's the current that matters most, you can pull higher current even with lower VID. If the CPU consumes more than 160w to VCC then consider yourself to be in the red zone for some CPU's/sockets. Load up i5/i7 with Linx at 4.4GHz and it's likely you will pull this much on some CPU's even if VID is under 1.40V. Or if benching, use a clamp meter on EPS 12V, if you see 20 amps+ under load, you best back off unless you don't mind the risk. Other than that, there may be further precautions that I don't know about. It depends what the other guys were running when they burned out their boards/CPU's.
Quote:
The extra pin thickness of some sockets may help a bit, but you still get burned CPU VCC pads even when the pins are fine. Bottom line is you have fewer VCC pads on i5 with current draw like i7 at the same frequency. On boards with thicker socket pins, the CPU pads stand a good chance of more damage than the pins (the thinner pins get hot and bend away from the CPU), so its kinda lose lose either way if you wanna push the platform real hard.
Quote:
The LOTE socket has better pins (the EVGA sockets are better), but you guys don't forget you have 75 less VCC pads on i5. SO just looking at the socket pins shape as the cause is not going to cure this issue. i7 has over 250 VCC pins while i5 seems to have about 175. ALmost same current draw with less pads. I lost one VCC pad even on the LOTE socket (which by the way has the same kind of pins we saw on the i7 sockets). So failing a complete redesign of the pin and contact area (pad size/density/count), there is not too much that can or will be done at this stage.
Quote:
Whichever way you look at it, it's current draw related. 160+w is pushing the socket design quite hard it seems, and yes running Linx you can get to this quite easily over 4.3GHz, so people just need to be a little more cautious, no need to torture the design too much to prove its stable or otherwise.

Both times it has happened to me on two different CPU's (one was a real bad CPU for frequency only 4.8Ghz max), it has been when I have seen full load EPS 12v draw at 20.5 amps (both times different boards). PWM efficiency at these kinds of loads should be 80-85% at a guess, and then you have say 30-40w (guess) going to VTT as well, so 160-180w to VCC.

BTW even on the beefy pin sockets, the the contact point density is pretty much the same and limited by the pad design of the CPU. Real solution here would be just to have more VCC pads.
post #337 of 1646
Quote:
Originally Posted by Chilly View Post
Odd, my maximum temperature maxes out at 71c (1.36v) using my Noctua air cooler, I would have thought that your GTZ will bring down the temperature much more than that... Odd...
I really think that it has to do with the 775 mounting plate. Even though my mb has 775 and 1156 mounting holes, the back plate on the mb prevents the water block's back plate from sitting flush. After tightening down the water block, the gtz's back plate was slightly bowed in and I think that the block might not be making good contact.

Once the 1156 adapter kit is released, I'll buy that and see how things go. Gary said that it should be out some time next week.
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post #338 of 1646
I have successfully purchased my new i5 system and am waiting for it to arrive. I'd like to be apart of the club!

Halifax1 - Intel Core i5-750/MSI P55-CD53
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post #339 of 1646
Quote:
Originally Posted by Mikecdm View Post
I really think that it has to do with the 775 mounting plate. Even though my mb has 775 and 1156 mounting holes, the back plate on the mb prevents the water block's back plate from sitting flush. After tightening down the water block, the gtz's back plate was slightly bowed in and I think that the block might not be making good contact.

Once the 1156 adapter kit is released, I'll buy that and see how things go. Gary said that it should be out some time next week.
Did you not use any plastic washers or w/e were the backplate doesn't come into contact with the board?
post #340 of 1646
Quote:
Originally Posted by GeforceGTS View Post
The few people who experienced it only noticed because they switch CPU's alot, even though the damage was done some of the boards/CPU were still running fine. So the only way you would know is if you removed everything after installing and checked. How many people do you think have double checked? Not many.

Don't get me wrong, Im not trying to scare monger or bash 1156, I just think people should be carefull, especially with that 1156 i5/i7 stability thread..

A few of quotes from raju at XS for those who don't feel like reading the full thread.
Thanks for those quotes. I've already read them though. According to my msi board I'm only pulling 95 watts at 4 ghz on the cpu. I just can't be bothered to worry about this. I'm sorry. If it dies it dies. Guess I'll go back to AMD. I think everybody is worrying to much over 1 or 2 incidents.
    
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