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Vmod for Zotac Zbox HD-ND22

post #1 of 10
8/13/11 at 4:54am
Thread Starter 
Zotac Zbox HD-ND22










There is no option to adjust the voltage of the CPU and GPU





Now we begin to mod the voltage.

MCP7A and Intel Celeron SU2300 Chip.




RT8152 PIN datasheet


CPU V mods


CPU voltage measurements


CPU volt measurements---before volt mods


CPU volt measurements---after volt mods


Pin datasheet


FB Voltage


GPU V MODS


VGPU measurements.


GPU OverClock


Unknow PWM controller for RAM


NB2


chinese version
http://bbs.pceva.com.cn/redirect.php...&goto=lastpost
Edited by ICZ88 - 8/14/11 at 10:44pm
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post #2 of 10
8/13/11 at 7:02am
o.O what is the board's specs? and where is it from lol should be good to watch and see how it all comes out in the end good luck bud
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post #3 of 10
8/14/11 at 10:10am
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@ the OP- on your NB mod pic.. I see power coming into the IC... but dont see any mosfets in-line after the IC.. It may just be rectifying its input voltage of +3.3v or whatever.. down to the 1.05v you are seeing..


What kind of frequency gains are you getting out of these mods?
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post #4 of 10
8/14/11 at 7:09pm
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
@ the OP- on your NB mod pic.. I see power coming into the IC... but dont see any mosfets in-line after the IC.. It may just be rectifying its input voltage of +3.3v or whatever.. down to the 1.05v you are seeing..


What kind of frequency gains are you getting out of these mods?
you may be right.

default frequency
CPU @1.2G @1V GPU @450/1100 @1.05V

before mods
CPU @1.6G @1V GPU @500/1150 @1.05V

after mods
CPU @1.86G@1.05V GPU @700/1800 @1.35V

I found the power supply IC 'RT8152D' too weak to provide so much power to CPU. when the CPU voltage over 1.1V the system will become unstable. so I adjust CPU voltage to 1.05V.
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post #5 of 10
8/14/11 at 10:49pm
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
@ the OP- on your NB mod pic.. I see power coming into the IC... but dont see any mosfets in-line after the IC.. It may just be rectifying its input voltage of +3.3v or whatever.. down to the 1.05v you are seeing..


What kind of frequency gains are you getting out of these mods?
I found the unknow IC is RAM PWM controller.... voltage output is 1.5V
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post #6 of 10
8/15/11 at 5:28am
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Quote:
Originally Posted by ICZ88 View Post
you may be right.

default frequency
CPU @1.2G @1V GPU @450/1100 @1.05V

before mods
CPU @1.6G @1V GPU @500/1150 @1.05V

after mods
CPU @1.86G@1.05V GPU @700/1800 @1.35V

I found the power supply IC 'RT8152D' too weak to provide so much power to CPU. when the CPU voltage over 1.1V the system will become unstable. so I adjust CPU voltage to 1.05V.
Maybe some extra capacitance or some higher rated inductors would help beef up the supply Have you thought of adding larger 16v caps for the input phases ? A proper capping might just have enough in it to hold that .05 of vcore your looking for.
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post #7 of 10
9/27/11 at 10:07am
ICZ88 you are one brave tech, bravo!

is the CPU on a socket? I like the ZBOX form factor but the CPU is too slow for games

An SU9600 should work, maybe even a T9600

any thoughts?

thx!

-edit-

btw I was able to OC the CPU to 1.6 and the GPU as well, which should help with games

thx for the info!
Edited by qwerty2000 - 9/27/11 at 12:21pm
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post #8 of 10
10/13/11 at 1:58am
Thread Starter 
Quote:
Originally Posted by qwerty2000 View Post
ICZ88 you are one brave tech, bravo!

is the CPU on a socket? I like the ZBOX form factor but the CPU is too slow for games

An SU9600 should work, maybe even a T9600

any thoughts?

thx!

-edit-

btw I was able to OC the CPU to 1.6 and the GPU as well, which should help with games

thx for the info!
CPU soldered onto the motherboard. It's very difficult to swap it.

I think OC GPU will more helpful.
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post #9 of 10
3/5/12 at 12:26am
Hi ICZ88,
I'm new on the forum and I have the same ND22 you were working on.
I found your posts but I can not see the pictures anymore.
Do you have a way to make them available again?

Thank you!
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post #10 of 10
10/20/12 at 8:23pm
Pedrocalima, have you been able to overclock you Zbox?
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