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About VRMs & Mosfets / Motherboard Safety with 125W+ TDP processors - Page 36

post #351 of 1100
Thread Starter 
Quote:
Originally Posted by konspiracy View Post
Why did you put Bad quality vrms?
And what does 2 transistors mean?
It depends on their board. Most of their newer, higher end ones are good... older ones, not really. 2 transistors is the type of MOSFET design. MOSFETs usually have two transistors - high side and low side - and one or two drivers/transistors to run everything. Since there's only one transistor and no high side/low side, this is much worse for power delivery than even a 3 transistor design, which in turn (for high TDP) would be worse than a modern low RDS (on) 2 transistor/driver design. This is a detail I didn't add to the article, I want this to be short enough for everyone to understand but long enough to provide the necessary details.

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post #352 of 1100
This is a thread that should be bumped everyday

Mine was a EVGA SLI LE with digital 6 phase but with the PSU lacking OCP/OVP, it burst into flames when upgrading to a 970 and overclocking.

Using an H50 instead of the stock Intel cooler also brought up the temps of the VRMs since it removed the CPU fan. So I would suggest some type of fan for that area.
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post #353 of 1100
I don't think that has anything to do with the VRMS

More of a PSU problem
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post #354 of 1100
Thread Starter 
I saw that lately I recently added it to the horror stories list. I don't see too many Intel VRM failures around. That would be more of a 5+1 phase I believe rather than 6 phase, or perhaps a 4+2. I've recently addressed the fan/VRM thing by adding a new section to this article.
post #355 of 1100
Great information on this thread , but i personally feel the original post should be a little more neutral in tone.Right now it kind of seems to imply that MSI makes bad boards.

It is very much possible that a whole lot of MSI owners never post on forums.

Do you know one more thing that hits a mobo? Rust. I dont know about the America and Europe,but i stay near a marshland , and ASUS boards last the longest .The amount of sulphur in the air eats away the metal.

Right now iam on Gigabyte so ill report feedback after a few years when it fails. .One thing very important i understood from this thread is that the stock cooler cools down the mosfets by blowing down air.I used to reduce fan speed thinking it only cools the proc but now iam going to let the fan blow at whatever speed the mobo thinks is right.CPU fan speed is regulated by the mobo am i correct ?

In conclusion,this thread just reaffirms the fact that heat , dust ,poor voltage regulation are the key reasons for electronic failure.My second highest rated component which fails is the graphics card.Its like a mobo as far as manufacturing is concerned.Processor,ram , VRM's and other similar components.

Is it possible to make a similar thread on the graphics card also ? My card failed recently.That will be great.
Edited by indus - 3/4/11 at 10:38pm
post #356 of 1100
Alright, so I took a look at the AMD motherboard phase list, and saw that my motherboard was not recommended for any overclocking at all. 125W was the recommended TDP, but my C2 Phenom II X4 is rated at 140W, and I HAVE tried overvolting and overclocking in the past, getting voltage up to 1.52 at one point. So far, I haven't seen anything grim or dangerous with my attempts, even when trying to stability test on a hot summer day (high ambient).

Have I been just lucky so far? Should I replace a component?

Hoping to hear good news or advice; I just bought a new hard drive for installing my benching/stability test OS just hours ago, and I don't want to end up regretting trying to get back into OC'ing.
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post #357 of 1100
Toransu, you just have to understand that the chances of your board frying up are more likely than most. That certainly doesn't mean that 1 out of every 2 of your motherboards will take part in a horror story, but just be aware of the risks your taking in OC'ing your CPU - they're a bit bigger than most.
 
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post #358 of 1100
Quote:
Originally Posted by Toransu View Post
Alright, so I took a look at the AMD motherboard phase list, and saw that my motherboard was not recommended for any overclocking at all. 125W was the recommended TDP, but my C2 Phenom II X4 is rated at 140W, and I HAVE tried overvolting and overclocking in the past, getting voltage up to 1.52 at one point. So far, I haven't seen anything grim or dangerous with my attempts, even when trying to stability test on a hot summer day (high ambient).

Have I been just lucky so far? Should I replace a component?

Hoping to hear good news or advice; I just bought a new hard drive for installing my benching/stability test OS just hours ago, and I don't want to end up regretting trying to get back into OC'ing.
you *can* overclock, it is just highly not recommended
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post #359 of 1100
Very informative, well done. +1
post #360 of 1100
Quote:
Originally Posted by Toransu View Post
Alright, so I took a look at the AMD motherboard phase list, and saw that my motherboard was not recommended for any overclocking at all. 125W was the recommended TDP, but my C2 Phenom II X4 is rated at 140W, and I HAVE tried overvolting and overclocking in the past, getting voltage up to 1.52 at one point. So far, I haven't seen anything grim or dangerous with my attempts, even when trying to stability test on a hot summer day (high ambient).

Have I been just lucky so far? Should I replace a component?

Hoping to hear good news or advice; I just bought a new hard drive for installing my benching/stability test OS just hours ago, and I don't want to end up regretting trying to get back into OC'ing.
It depends is the best answer. I myself am part of the horror story list now, so I know that it's real, but I still believe that it depends on your particular board and your particular usage.

For example I had a MSI 870-G45, cheapy board, and I tossed an unlocked x2 overclocked by > 1GHz and overvolted into it. I ran Prime95, I ran BFBC2, SCII, Crysis 2 (lots of 2s), I ran Prime95 + Furmark, and it never gave me any trouble. But then I ran LinX and it died within minutes.

So some people die without OCing, some people OC and never feel a thing. But as has been said, if something does happen at least you've been warned of the risks.
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