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post #881 of 1497
I have some 1500 and 2200 uf 16v rubycon and nichicon electrolytics, but I have a gut feeling that big caps (or caps in series?!) won't be as helpful as a little quality supplemental capacitance.

Going against the grain with this one. Dunno.

My card benches at 1100 before coldslow hits without any supplemental caps.

Hopefully I can get it well over 1200 with the hipro bios and some caps......haven't done much benching in weeks.

Edit: Done. That was fun. Been weeks since I've soldered anything.


Edited by Patch - 6/25/10 at 12:40am
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post #882 of 1497
They don't look GIGANTIC ENOUGH Can't wait for some results Patch, knock em dead
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post #883 of 1497
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
270uf..? I see the mod thread mentions doubling caps for increased 'uf' capacitance..and they used 2x470' uf caps per phase = 12x total... figured I would just increase capacitance and stick with 1x cap...

*careful with those solid caps..they will hold out for temps but dont filter out ripple the same way an electrolytic cap can...lower ESR maybe but filtering characteristics are different.

I havent tested any other than these yet..time will tell.


*Cant wait to see your benchies paired with your monster 980 ..good times no doubt.
Do you suggest the Polymer or liquid electrolytic caps?

The down side to electrolytic caps are they loose F or stop working when froozen.
    
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post #884 of 1497
Thread Starter 
Finally got around to updating. Updated 480 mods, thx CL




Quote:
Originally Posted by CL3P20 View Post
bulk datasheet upload #1 for me..more to come as I sift through my files..
Attachment 158232

Attachment 158233

Attachment 158234

Attachment 158235
FN9187 pulls up ISL6568 when I clicked your link
DS8105 pulls up RT8105




Quote:
Originally Posted by CL3P20 View Post
Sapphire non-ref V.2 5850 IC- http://pdf1.alldatasheet.com/datashe.../NCP5395T.html

FB is pin 6 from the left on the bottom row as seen in the pic.

Any update on this?
    
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post #885 of 1497
No update from the user on the Sapphire 5850 mod... havent got any response back.

*as for the electrolytic caps.. yes they loose capacitance once frozen.. but that doesnt happen until ~ -40c or so. In most all cases, the caps are far enough away from the core/LN to keep above this temp with relative ease. Only caps directly behind the core will ever have much of a chance to get cold enough to short... I guess if your throwing a lot of LN on it..there is always that possibility though .

I need to do more testing and compare the results..either way, though..all I have is DICE... so I really need an LN bencher to do the ground work.. That is...if they would be up to it..

*Hicookie was the one that recommended the electrolytic caps for 5870 mods...told me that solid cap will "pass" ripple into the circuit much more than electrolytic cap will. Even though, solid caps typically have much lower ESR value...which only becomes an issue for most of these PWM circuits at much higher frequencies.

As i stated though...I only bench DICE..so I have yet to be able to see the effects for myself.
post #886 of 1497
Thread Starter 
Updating some Chil datasheets. Product briefs actually.


    
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post #887 of 1497
I need to do something with my soldering iron...

I need a hand mapping out some read points on this board



When monitoring voltages in windows I'm seeing absolutely 0 overshoot or droop with a fully loaded 5ghz 6 core But I get the feeling it's dirty voltage because it's taking a lot more voltage than on other boards with beefier phase designs. Maybe piggyback some caps in there Out of my depth here, it's a job for the v-mod squad
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post #888 of 1497
vcore appears to be 12-14leg IC near upper left corner of CPU bracket... chipset voltage looks like the IC near the molex connection on the mobo ...and vDIMM is either the pair of 6-8xlegs IC's under the RAM slots..or the single IC on the right of the RAM slots...


..list the numbers for us..lets see what we got.
post #889 of 1497
Guess Imma have to break down the worlds prettiest insulation job

BRB with some numbers.
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post #890 of 1497
bbl..gotta check in at the office for a minute..
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