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3820 possibly fried by 2 years of 1.5v

bemaniac

bemaniac

bemaniac

Soldato
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30 Jul 2006
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4090 on 850w = BOOM
My 3820 is exhibiting all the signs of a soon to die chip. Even at stock everything it now reaches 100c with watercooling and new TIM. Oh well.

What would you recommend I swap it for. Budget is about £350ish. Can push to £600ish.
 
There doesn't appear to be much left for x79 platforms on the website, apart from the quad core 4820k..

There was a 3820 on the MM, which seems like your best bet unless you're wanting to change your motherboard & RAM!
 
Figured I'd try go for a 4930k 2nd hand but I'd like to know it overclocks at lower voltages that I used as clearly chips don't last long with that kind of heat and voltage :)

Know of anyone or anywhere these are £350?
 
The chip burning out shouldn't make it run hot. 100 degrees suggests the water-cooling is misbehaving, but doesn't imply that it's degrading.

On the other hand, excessive temperatures would make it look unstable, even when the chip itself is fine.

Should probably rebuild the loop before buying a new chip :)
 
JonJ678 said:
The chip burning out shouldn't make it run hot. 100 degrees suggests the water-cooling is misbehaving, but doesn't imply that it's degrading.

On the other hand, excessive temperatures would make it look unstable, even when the chip itself is fine.

Should probably rebuild the loop before buying a new chip :)
Click to expand...

Good point.

Is your video card water cooled to? If so what are temps for that underload? Also if your cpu is hotish when idle it could be your block needs adjustment.
 
lol chips don't burn out :D

When a chip dies the transistors simply remain stuck open, writing (as a binary example) 1s instead of 0s.

The only way a chip could do the temp thing is if the solder had failed and I can't see that.

What it is likely to be however is your motherboard giving up the ghost. On highly overclocked rigs boards have quite a short life. Usually 1-3 years. I also note you are running a UD3 so I assume X79 UD3? it only has 8 phases so they have to work a lot harder than most, which on X79 are usually 12 phases.
 
Yes I agree with Andy the UD3 was one of the poorest X79 motherboards I came across. Actually most of the Gigabyte range was in my opinion poor on X79 (with the exception of the UP boards). I got a 300Mhz difference in overclock using exactly same components going from Gigabyte to the equivalent Asus board.
 
wam7 said:
Yes I agree with Andy the UD3 was one of the poorest X79 motherboards I came across. Actually most of the Gigabyte range was in my opinion poor on X79 (with the exception of the UP boards). I got a 300Mhz difference in overclock using exactly same components going from Gigabyte to the equivalent Asus board.
Click to expand...

I only bought mine because it was £53 brand new delivered and has a very easy life with an 8 core Xeon @ 2ghz, 0.95v, 60w.
 
Sorry quick question about the gigabyte boards. What is the difference between the UD and UP range?
 
Right well turns out I bought a 4930k. Extra money for a new board is available so having checked the watercooling I will see if the new cpu acts up. if so I will exchange my board.
 
The vrms burning out was due to a high voltage limit set by the BIOS which got corrected if I remember right,the ud means ultra durable components,high end capacitors ect
 
wazza300 said:
The vrms burning out was due to a high voltage limit set by the BIOS which got corrected if I remember right,the ud means ultra durable components,high end capacitors ect
Click to expand...

The UD3 is junk. I would not take my 3970x within a million miles of it.

People laugh and joke and say AMD CPUs use power, but I tell you no AMD needs 12 phases. I shudder to think what my 3970x guzzles down when I clock it to 4.9ghz and beyond.

But the point remains. 1.5v into the CPU means the VRMs have to bust a nut. There are protection circuits in place but these are easily bypassed on X79 because they are an enthusiast board.

My Big Bang Xpower II has 12+2 phases if I remember correctly. Heck, it may have even been 12+4. And I had to disable DrMOS because it was telling me it was going to shut down my PC due to the VRMs running too hot. In the end I disabled it, and I tell you, the little red LED fet warning light has been jammed on ever since.

But I'm not concerned because the board was built to take it, and that reflects in the price. I paid £220 but on launch they were closer to £300.

If you're going to use a cheap board then the old adage goes - "If you're gonna play be prepared to pay".

No 8 phase board can continually pump out 1.5v and god knows how many amps through the VRMs forever without eventually failing.

I wouldn't even mind, but the phase cooling is crap. Look at this pic.



Now look at the top heat sink and look how an entire row of fets have no cooling at all.

Know why? because this board was £150 when all of the good ones cost double that and IMO was only ever made to run quads and certainly not at 1.5v. I give my 3970x 1.47v @ 4.9ghz and would not dare going any higher without slapping a water block over the fets. For my daily clock of 4.7 I need just 1.42 and this is a 12 phase board and that red light is perma jammed on.

So even if it is the CPU (doubt it) and even if the board still works I wouldn't put your 4930k in it dude. I don't mean that horribly, I just mean I would not dare attempt such a feat with this board.

It's a low rent budget board, made for quad core CPUs.
 
I wouldn't be putting above 1.4v into a chip anyway for 24/7,that's just me

The board would cope imo,cheap as it is
 
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