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3+1 Phase on DICE! 1.7v+ of awesome! Do NOT try this at home!

post #1 of 42
Thread Starter 
this is what you really want to see right here biggrin.gif

pi32m1341281.png

dscn5945n.jpg

dscn5947x.jpg

dscn5949t.jpg

dscn5954z.jpg

kept it to two cores cause the other two I unlocked suck at high speeds. This board is a capable overclocker for sure, but I would have liked to see a little more complicated BIOS, as it was quite constricting as I was trying to tune the memory/IMC for pi runs.


OLD OP:
Quote:
Gigabyte wins. you say 4+1 is crap now look at what this little sucker can do:

whoneedsspensivemobo.png

This board has amazed me from the time that I opened the box about 5 hours ago. I got an X2 560 with it as well, which it unlocked & overclocked with ease. Even though it features only an SB7120 south bridge, gigabyte have included core unlocking in the BIOS, which is not a standard feature of the SB710. this is great stuff for such a cheapie.

It then continued to push it to 4Ghz with ease and crank the IMC up to 2750Mhz without much issue. (although NB multi's above 13 were broken)

YES, the gigabyte GA-MA78LMT-S2 featuring a beefy (tongue.gif) 3+1 phase VRM setup. this was plenty to handle the quad at 4Ghz+

For $49.99 after MIR on newegg, this board is great for any cheaper system that requires a little bit of Overclockin! cool.gif

Edited by wumpus - 4/23/11 at 12:59am
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post #2 of 42
It's not that they can't overclock, it's that they can't handle the higher voltages required for this overclocks 24/7 and can lead to VRM failure.

I run 1.4v through a 3+1 and have for months without any issues so I don't know how serious it really is.
    
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post #3 of 42
Thread Starter 
Quote:
Originally Posted by Peroxide;13226143 
It's not that they can't overclock, it's that they can't handle the higher voltages required for this overclocks 24/7 and can lead to VRM failure.

I run 1.4v through a 3+1 and have for months without any issues so I don't know how serious it really is.

then again you are only on a dual core....

1.45 on a quad is substantially more power
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post #4 of 42
...looking at a board's phase number is simplistic, not always 4>3 because they can be quite different, so you may be right saying 3>4. If you have 3 phases that can take 50W/phase while the 4-phase boards have max 25W/phase then 3ph@150W>4ph@100W

My guess is while the example above is possible, I don't really believe you can find such high quality VRM in low-end boards. So I'm not so sure you've got such a good board; not saying that it's a bad board, but you should watch out the VRM temps. You can recognise higher-wattage phases by the higher power consumption of the board at low loads; all VRM have lower efficiency at very low loads (say below minW=x%*maxpower), and having higher max power they also have higher minW.
Edited by dragosmp - 4/22/11 at 2:08am
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post #5 of 42
Thread Starter 
Quote:
Originally Posted by dragosmp;13226250 
...looking at a board's phase number is simplistic, not always 4>3 because they can be quite different, so you may be right saying 3>4. If you have 3 phases that can take 50W/phase while the 4-phase boards have max 25W/phase then 3ph@150W>4ph@100W

My guess is while the example above is possible, I don't really believe you can find such high quality VRM in low-end boards. So I'm not so sure you've got such a good board; not saying that it's a bad board, but you should watch out the VRM temps. You can recognise higher-wattage phases by the higher power consumption of the board at low loads; all VRM have lower efficiency at very low loads (say below minW=x%*maxpower), and having higher max power they also have higher minW.

well there are 3 fets per phase and I had only a fan on them, and they were perfectly fine. Even if I didn't most VRM's are alright even at very high temperatures. The failures that all the 4+1 naysayers are whining about are usually current based, in which the user draws too much power through the VRM and it explodes, which is quite a different issue than that of heat. but you have to admit for 50 bucks its pretty awesome
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post #6 of 42
It is not that it sucks. It is the quality of the mosfet that sucks. The more phase power you have the less heat on the mosfet. Meaning the longer the mobo will last when oc.
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post #7 of 42
Thread Starter 
Quote:
Originally Posted by dixson01974;13227439 
It is not that it sucks. It is the quality of the mosfet that sucks. The more phase power you have the less heat on the mosfet. Meaning the longer the mobo will last when oc.

you cant say "it" doesn't suck then say the mosfets suck when they are part of the motherboard.

and honestly heat is absolutely not an issue with proper airflow....
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post #8 of 42
Great bargin for performance! Nice job!
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post #9 of 42
I done this on a big bad scary MSI board with 4+1 phase.

6dzsY.jpg
L2jHq.jpg
r32Es.jpg

Also run this system 24/7 at 4.3ghz. No problems so far.
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post #10 of 42
And your point is?

Touch one of the VRM's during a stress test and notice how you have no fingerprint left.
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