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About VRMs & Mosfets / Motherboard Safety with 125W+ TDP processors

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post #11 of 1100 (permalink) Old 02-16-2011, 10:24 PM
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Thanks for this! biggrin.gif Now I know 4+1 ain't worth it!


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post #12 of 1100 (permalink) Old 02-16-2011, 10:24 PM
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Haha, I remember you telling me that you were slightly worried about my mobo and my processor. And now I know what TMPIN2 is on my mobo! It got to 106C a while back just after I unlocked the fourth core, before I dropped the voltage. Now it maxes out at maybe 80ish C.

I only see 4 chokes on my mobo - does that make it 3+1?

Quote:
Originally Posted by james_ant go_quote.gif
Well the reason it has to be 8 pin and 6 pin is because they ran out of pins at the factory, so instead of 8 pins you are left with another 6 pin.


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post #13 of 1100 (permalink) Old 02-16-2011, 10:25 PM - Thread Starter
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Yikes, that's definitely a 3+1 phase there. 106C temp - okay, that's really high! Then again it's not unexpected from high TDP processors on the somewhat weak 3+1 VRMs and near-lack of cooling there. Even though Gigabyte usually features good VRM quality, I never ever recommend 125W on 3+1 phase. That one's not a quality one either actually, looks like it uses the third-transistor design and pretty tightly spaced unheatsinked chokes. That must've been really close eek.gif

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post #14 of 1100 (permalink) Old 02-16-2011, 10:27 PM
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Quote:
Originally Posted by xd_1771;12416287 
I was talking about MSI's 890GXM-G65 there (you can CFX on it but I don't recommend it due to small spacing between most dual slot cards) and TA890GXE not supporting Crossfire
890FXE is completely out of the question there tongue.gif

Now, I have some math homework to do... (maybe writing this wasn't so good an idea lachen.gif)

It has 2 16x lanes put cannot crossfire?

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post #15 of 1100 (permalink) Old 02-16-2011, 10:27 PM
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Good read. Thanks for this. Now I know...I'm going to back out of my X4 unlock back to X2. Getting a new computer totally though on 2/23/11 for my b'day so I guess I won't have to worry about this soon.


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post #16 of 1100 (permalink) Old 02-16-2011, 10:27 PM
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Quote:
Originally Posted by xd_1771;12416319 
Yikes, that's definitely a 3+1 phase there. 106C temp - okay, that's really high! Then again it's not unexpected from high TDP processors on the somewhat weak 3+1 VRMs and near-lack of cooling there. Even though Gigabyte usually features good VRM quality, I never ever recommend 125W on 3+1 phase. That one's not a quality one either actually, looks like it uses the third-transistor design and pretty tightly spaced unheatsinked chokes. That must've been really close eek.gif

Oh man, I'd believe it. But like I said, undervolting dropped temps a lot. It's been running fine 24/7 since then, but the CPU mostly idles. I just GPU fold on it now.

Quote:
Originally Posted by james_ant go_quote.gif
Well the reason it has to be 8 pin and 6 pin is because they ran out of pins at the factory, so instead of 8 pins you are left with another 6 pin.


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post #17 of 1100 (permalink) Old 02-16-2011, 10:28 PM - Thread Starter
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Quote:
Originally Posted by Chuckclc;12416335 
It has 2 16x lanes put cannot crossfire?

No, you're fine, I wasn't even talking about TA890FXE there tongue.gif

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post #18 of 1100 (permalink) Old 02-16-2011, 10:29 PM
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I had to steer my comp tech teacher away from a msi board and a 125 watt chip.
I got him to get a 95 watt chip and an asus with an 8+2.

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post #19 of 1100 (permalink) Old 02-16-2011, 10:29 PM
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Quote:
Originally Posted by xd_1771;12416347 
No, you're fine, I wasn't even talking about TA890FXE there tongue.gif

Oh duh, GXE, sorry. Been a long day.

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post #20 of 1100 (permalink) Old 02-16-2011, 10:40 PM
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Im so glad i have expensive taste, got my mobo before this was even widly know, but im sitting pretty with my 8+2. I even go extreme now up to 1.8v etc when doing dry ice runs(my cpu-z voltage detection is wrong BTW, its actually at about 1.785v there).

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