Got a few mods I will need help with

[Neuromancer]

EDIT: Just need help on ordering stuff




List of devices

EVGA 7600GT from OCN (http://www.overclock.net/video/649191-evga-7600gt-dual-dvi-s-video.html)

EVGA 7600GT from eBay (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130367521639&ssPageName=STRK:MEWNX:IT)

I also have a bloodrage coming in a couple weeks probably (e-check clears on Wednesday.. so probably 2 weeks after that since it ships from Canuckistan) So thinking about picking up a asRock x58 extreme in the meantime with a 3GB kit of kingston t1s.

these sticks (http://www.newegg.com/Product/Product.aspx?Item=N82E16820104121)

Asrock is a "gimmie" I can flip it back out for cheap.. and more importantly practice my PCIE modding little tiny baby resistor moving skills. (highly in doubt... adding.. no problem. removing without cooking? problem)

So...


Need any advice you guys can give me.. from cooling to vmodding (this is why I posted here). Should I just pay another member here to mod the stuff for me? I cant afford GPU pots yet.. so I will need a cooling solution (GPU cooler) that is damn near universal.. even if it means modding the hell outta it... not an issue :cool3: Just as long as any heatpipe clears chips that might be directly above the GPU... Or leaves enough clearance I can get a decent ram sink on there.... BIOS modding I will learn elsewhere so not worried about releasing latencies to get these GDDR2 chips loose to get to 600+ MHz.

I am going to have to pick up thermal probes too... thats going to have to wait till I get a debit card reactivated on my PP account though :( Maybe this week? Probably next. As I doubt the suntekstore will allow an instant bank transfer on paypal being located in China and all.


So... what do I need to buy (bulk is okay if its universal...I will probably be doing more in the future) as I would rather learn on cheap stuff

Both modding the cards and modding the asrock extreme (later maybe modding the bloodrage :) ) Thats the real worry. I think you are supposed to use a 15W iron for them itty bittys... but... still dunno how to release both sides without cooking the SMD

TIA

[ocgmj]

If you want to pay for shipping them back and forth I will gladly mod the cards for you no charge for my time. The VR's are only a buck and I have a boat load of them :thumbsup:

[Splave]

OC is the man :)

[ocgmj]

Thanks homie. Check out what's incoming this Thursday. SMD Rework Soldering Station!
1588

[Neuromancer]

Oooo that is nice..

I may take you up on the offer, but I sort of want to learn how to do it myself sending you all my HW all the time would have you

a) too busy to get anyone else's done
b) not teach me anything LOL

I would really rather learn how to do it on a couple of $25 cards, than a more expensive one.

[Neuromancer]

Sent my board out to George for the PCIE mod.

Want to try and tackle the vid cards myself.

I have a couple 7600 series cards, a 7900 series, couple of 7800s inbound and a 9500.
buy a whole bunch of pots so I have them for future mods.. can i order a range of vr's to just cover them all?

What should I order and how much wire :)

molex connectors for read points I suppose would be pretty smart as well. (any shops have all the parts?)

[Kal-EL]

Another v-modder in the works ;)

[Dentlord]

I know I am brand new to modding ... but a great way to get wire is just cut up an old IDE cable ... a few mods worth of small easy to work with wires in one of those suckers ;)

[Neuromancer]

Thanks Dent, I just read that myself. Been pouring over all the guides I can find for the last couple hours :)

I am pretty confident in my sodlering abilities for vmod type of more. But I HATE removing/desoldering. But I have neither a heatgun nor solder wick lol so of course that it makes it difficult.

I should find out if my old job is going under completley... maybe pop up there and grab some supples for cheap. :) Solder stations, those lamp/glasses that clamp to your desk giant ESD mats. That would be freaking sweet. Those dual solder station with adjustable controls are bad ass. Course they are also like $700 bucks :(

One nice thing about vmodding though.. is no using the solder pot!! Woo hoo I hated that.. (big vat of molten solder you dip the pins in then crack it on the bench to prevent shorts. shitty job, full of fumes and tiny little burns from having 700F solder splash on yah).

Pot is used when you are soldering on, like IDE connectors.

[ocgmj]

I put this package together for a well known guy here. ;)

http://www.overclockaholics.com/forums/attachment.php?attachmentid=1852&stc=1&d=1269885619

[ReverendMaynard]

that's a total win pack G, very nice.

[Neuromancer]

I have a 20/40W soldering iron from radio shack. going to head over there tomorrow to order some replacment tips for it (they do not carry them instore apparently)


Will grab some braid, and solder while I am there too.

What is that other stuff? I assume one is a trace pen.

What size VRs should I grab? I assume an assortment...

Thanks for the advice

[ocgmj]

I would grab a flux pen, soldering tools (for holding wire while soldering). VR's = 500ohm,1K,5K,10K,50K,100K. Lite gauge wire i.e. 22-26. May want to also grab a hot glue gun if you don't already have one.

[Splave]

+1 on the glue gun, grab some 20k's too if you can find them, seem alot of vmods require them. I prefer to use the proper vr rather than tuning down a higher value but thats just me :)

Sick package OC Got my little 25 watter with fattie tip rockin lol Flux is key though, not impossible without but improbable.

[Neuromancer]

K OCNs volt mod sticky is very big but missing a lot.

Only want to order a little more than I need so.


7600GT (x2) will need 4 50k resistors for Vgpu and vmem
http://www.xtremesystems.org/forums/showpost.php?p=2406145&postcount=3

Face pointed out there is no OCP mod on the card... is that an issue?

Looking up the 7800GT, 7900GT and 9500GT mods next will post links... as I find them

7800GT vmod
http://www.xtremesystems.org/forums/showpost.php?p=1755916&postcount=210
5k+10k Ohm VR (2 0f each for 2 cards) no mention of OCP


7900GT explanation (http://www.xtremesystems.org/forums/showpost.php?p=1359661&postcount=2)
I would need a 50kohm for hte vGPU up to 1.7v (which should be enough for 600MHz) and a 10kohm for the switching frequency. I do not see vMem yet


9500GT mod (http://www.madshrimps.be/?action=getarticle&number=2&artpage=4015&articID=919)
2 50k ohms

Might have enough fan adapters laying around to cut them up and turn them into read points for the DMM :)

[Splave]

Face pointed out there is no OCP mod on the card... is that an issue?

You might not even run into OCP problems. I know my 8600gt went to 2v on water with no OCP :) If you do OC and I im sure can work it out

[HITandRUN]

You might not even run into OCP problems. I know my 8600gt went to 2v on water with no OCP :) If you do OC and I im sure can work it out

Yeah some cards needed and some not. You will see when you get there and while you running you screen goes black and the multimeter to zero. OCP kicked in and you need a restart to get going again. :thumbsup:

[Dentlord]

I ran into ocp right away on my 8800gt, couldnt even run 1.2v. Did the mod and it went 940 core with 1.4v after that

[Neuromancer]

Still looking for a better 7900GT KO vmod at least something to get me in the ball park from what I read the KO vmem clocks terrible, so upping hte voltage on it to get the clock rates up is probably going to be pretty important.

Will be dicing one of each, and running water for SLI on the 2 7600GT and 2 7800GTs.

[HITandRUN]

Still looking for a better 7900GT KO vmod at least something to get me in the ball park from what I read the KO vmem clocks terrible, so upping hte voltage on it to get the clock rates up is probably going to be pretty important.

Will be dicing one of each, and running water for SLI on the 2 7600GT and 2 7800GTs.

Yeah I have one of them here (http://www.evga.com/products/pdf/256-P2-E567.pdf) and will mod it as well. Which mod are you planning for your card?

[Neuromancer]

I have the N584, which from what I read (I forgot to check when I had the heatsink off a few minutes ago) infinieon chips.

Vgpu and vmem mods are what I was planning on. have not even run the cards at stock yet... when my board gets back (should be here thurs or friday... (thanks OC!!) I will be putting it back under water and playing around with all the cards before I get to modding them :)

Just ordered enough pots for all of them... with a couple extra.

Going to look at quick disconnect stuff for water cooling, so I can water cool the 7600s in SLI and hte 7800s in SLI.. plus I have a WB for the 4890, I want to take for a spin....


Oh that might be a future mod too... OCP for the EAH4890 :) IIRC the leds on the back of the card signified OCP shutoff when I was having problems at 1100 core before. Dunno if keeping the VRMs cooler will help prevent that or not. The FC waterblock I got for it, guy included half an old socketA hestsink to drop on the block over the VRMs said it helped keep temps down :)

[HITandRUN]

Mine has Samsung ram chips so these might OC nice. We'll see when I'm done with the other cards I have.

[Neuromancer]

Got tired of guessing and its only 4 screws... Infineon chips... ends in -14 so assume 1.4ns

Been a long time since I did the math... 2000/1.4 = ~1430 MHZ max stock volts?

[HITandRUN]

Got tired of guessing and its only 4 screws... Infineon chips... ends in -14 so assume 1.4ns

Been a long time since I did the math... 2000/1.4 = ~1430 MHZ max stock volts?

Same on this end just Samsung mem. We'll see.

BTW: Is this the mod you will be using?

http://resources.vr-zone.com/Shamino/79mmod2.jpg

[Neuromancer]

Ugh was hoping to have at least some vmods done by now.. got home Tuesday and had to tear apart my RC car. Got it all back up and running. Got some household chores to do still no GPU put.. :( Thinking I will am going to pass on the 35L fill up this weekend and just save up for the 160L. Babysitting my sister's kids Fri/sat, so going to try and get some DIce in tonight though on CPU.

Will be first time frozen i7 run for me :)

Guessing Fri/sat night after the kids go to bed I can work on vmods.

EDIT: UGh just got the word gotta go get the DIce now if I am going.

BBL

[HITandRUN]

Ugh was hoping to have at least some vmods done by now.. got home Tuesday and had to tear apart my RC car. Got it all back up and running. Got some household chores to do still no GPU put.. :( Thinking I will am going to pass on the 35L fill up this weekend and just save up for the 160L. Babysitting my sister's kids Fri/sat, so going to try and get some DIce in tonight though on CPU.

Will be first time frozen i7 run for me :)

Guessing Fri/sat night after the kids go to bed I can work on vmods.

EDIT: UGh just got the word gotta go get the DIce now if I am going.

BBL

Nice! Looking forward to the numbers. :thumbsup:

[PizzaMan]

Looks like some tasty stuff going on here.

Yea, I know the OCN sticky is missing a lot, but it's more for archive purpasses that a teaching handbook. Nice to have a compiled list of comfirmed mods, so you don't have to search through threads looking for a completed mod.

If you guys like, I could post a copy of the archive here.

[FACE]

Hey man, looks like you DO deliver.... lol.

Post her up! The more info the merrier!

[Neuromancer]

Found saminos OLD guide cached at vr-zone (DLed the pics and copied the text will post it up here if its okay with him)

Only thing it has no read points listed. In fact I cant find ANY read points anywhere for the EVGA N550

Still reasearching...


Okay. one 7600GT is the 7600B rev 2.3 PCB seems seems like its going to be more trouble than its worth. From what I gather it does not look like its going to happen. However, I maybe able to flash it to a KO so get some more speed out of it. (judgment call based on This link (http://forums.vr-zone.com/overclockers-hideout/119227-evga-7600gt-over-voltage-help.html))

Other 7600GT is refernce design though so Shaminos guide will work just fine :)

[Neuromancer]

When vmod guides say "replace resistor with XXX VR" They mean remove the SMD that is on the board and mount the VR? Or just add the VR over top of it? (confused because... electricity follows path of least resistance... so technically adding it on top and lowering resistance should still work yes? This way the VR can be removed later without worrying about trying to remount the SMD....)

[FACE]

I would just slap it over top of it and check it w/ the dmm.... The worst that can happen is it will not work. :thumbsup:

[Neuromancer]

Same on this end just Samsung mem. We'll see.

BTW: Is this the mod you will be using?

http://resources.vr-zone.com/Shamino/79mmod2.jpg

No I have the 584 with infineon chips. Worse mem clocks but longer lasting RAM...thats for the original 7900GT's.

It's similar but OCP is said to be different (although they don't work apparently on the newer cards) the left OCP chip in that image is actually add a 100K in parallel (or pencil mod it to 47K) for switching frequency stability beyond 1.2volts.

http://www.xtremesystems.org/forums/showpost.php?p=1359661&postcount=2 This post explains it.

vMem is the same i think but even with mod not expecting more than 900MHz due to the ICs.


I would just slap it over top of it and check it w/ the dmm.... The worst that can happen is it will not work. :thumbsup:


Thanks will do that...

Curious though these mods are showing 10K 50K 100K variable resistors being added and what I measured on both 7600s and the 7900 the resistance ranges from .44 kOhm to .67kohm without power applied... (would not think it needs power applied for resistance maybe it does though).

[FACE]

Isn't the formula "measured resistance x20?" or something like that?

[Patch]

Curious though these mods are showing 10K 50K 100K variable resistors being added and what I measured on both 7600s and the 7900 the resistance ranges from .44 kOhm to .67kohm without power applied... (would not think it needs power applied for resistance maybe it does though).

Yes, measure resistance without power.

I had a couple EVGA 7600 GT's I tried to mod and bench a few months back, but the memory was super ultra crappy crap. So crappy, that a hefty GPU overclock was completely worthless. I'll see if I can find the mods.

[Neuromancer]

Isn't the formula "measured resistance x20?" or something like that?

If you have it set to 20KOhms yeah I think so... mine is auto ranging though so I thought should be straight up.

Yes, measure resistance without power.

I had a couple EVGA 7600 GT's I tried to mod and bench a few months back, but the memory was super ultra crappy crap. So crappy, that a hefty GPU overclock was completely worthless. I'll see if I can find the mods.

yeah these ones have crap mem too.. DDR2 so not expecting a huge improvement without getting them up to speed. think I had almost NO overclock though with them at default voltages..



Poking around hte back of the N7600B rev 2.3 PCB (vmods I found are for 2.2) Im guessing hte read points are on the front of the card. I found 12v read points a HUGE amount of 5V read points...

The caps by the gpu core read 1.35v except the lowest one reads 1.25v,

Think I should give up on this crad. Not going to get me a lot of boints any way. Just move on to the good 7600gt KO, the 7800gts the 7900gt and the 9500Gt.

I got pictures of everything and when I am all done and everything works I will document them in the threads here.

One thread per card for easier reference.

Just measured the 7600KO and looks like the mod will be good and easy to do. Wish I have not wasted so much time on the rev 2.3 card.

Okay looks like this is going to take a little longer than I had hoped :(

Cant find my molex tool, my razors ARGH. I hate doing shit half-assed whne I do own the correct tool for the job. Going to tear everything apart get organized and start anew in a couple of hours. With a clean and tidy work space (at least until I start modding again).

Sucks trying to cram a living quarters, office, work shop and benching area into one room, but its only for a couple more months.

[PizzaMan]

Got any 2.5-6.3v caps on the card? If so, what are the voltage readings under them? Here, you should find a set for GPU and some for MEM. You can always get a reading from directly behind the GPU and off the back of each individual memory module. Comes in handy when you have +1GB of memory and a drop of ~.05v from one side to the other.

[Neuromancer]

Got any 2.5-6.3v caps on the card? If so, what are the voltage readings under them? Here, you should find a set for GPU and some for MEM. You can always get a reading from directly behind the GPU and off the back of each individual memory module. Comes in handy when you have +1GB of memory and a drop of ~.05v from one side to the other.

I poked around on the back of the card...

the 2.3 is missing a couple of caps vice the 2.2 Read 1.35 on a couple and 1.25 on the other for GPU

Vmem one reads 12v though :s Only thing holding me back on that card is read points.. the ICs are the same.. less CAPS means just less Voltage regualtion I would think...

The fact that one cap reads a full tenth off though well I dunno

Vmods is new to me... imma get my feet wet on cards that are well documented first.. figure out the ICs and stuff as I go.. figure that is the best bet and maybe as I progress I can figure out future vmods...

Any help you can give is totally appreciated though :)


EDIT: and yes was only a couple thumbscrew twists to take the HS off and the 3 CAPS by the GPU are marked 2.5 volts... other says 04v same size

(ther are 5 small on the 2.2 second from top is missing on on hte big cans to the left the bottom is missing.. ) the two missing cans

big and little can for vmem is present will start a thread on it tomorrow.. if you are interested...

[PizzaMan]

If you post some pics of the front/back of the card while the cooler is removed, it would be easier to see what you're talking about.

[Neuromancer]

Will do man. I took the snaps already , just have not uploaded them. Thought I posted the link to the 2.2 earlier but maybe i had not... I do realize I was not specific as to what I was talking about to, I forgot to say I would add the info later ;) Did not realize you were still online :)

Gimmie a few minutes to finish my sammich and I will up load and post.

[Neuromancer]

http://i167.photobucket.com/albums/u153/cyber42punk/Overclockaholics/th_vmod005.jpg (http://s167.photobucket.com/albums/u153/cyber42punk/Overclockaholics/?action=view&current=vmod005.jpg)http://i167.photobucket.com/albums/u153/cyber42punk/Overclockaholics/th_vmod006.jpg (http://s167.photobucket.com/albums/u153/cyber42punk/Overclockaholics/?action=view&current=vmod006.jpg)
http://i167.photobucket.com/albums/u153/cyber42punk/Overclockaholics/th_vmod003.jpg (http://s167.photobucket.com/albums/u153/cyber42punk/Overclockaholics/?action=view&current=vmod003.jpg)http://i167.photobucket.com/albums/u153/cyber42punk/Overclockaholics/th_vmod004.jpg (http://s167.photobucket.com/albums/u153/cyber42punk/Overclockaholics/?action=view&current=vmod004.jpg)


CAp hides it in first pic but its N7600B REV 2.3

[PizzaMan]

You are going to need to remove the big sticker to get to your GPU measure points. I've marked the memory measure points in the corner of the card.

http://i170.photobucket.com/albums/u262/PizzaManWill/5-7-20102-33-19PM.jpg

[Neuromancer]

I already checked them (those are the leads from the Caps.

Top one you circled reads 12v other I forget... (it might have been accurate)

The ones behind the sticker read. from bottom up... 1.25 1.35 1.35 and 5V (not sure about this one might have also been 1.35) the big cans on the board read 12v.

that is where I thought to read as well since they are supplying the voltage to the core/mem

[PizzaMan]

1.25v and 1.35v are your GPU readings. The 1.35v is likely your input phase. The legs on the 2.5v caps are the ones you want to measure.

[Neuromancer]

1.25 like low clock mode or something? I should get a chance to meter the mem again tonight.


I knew this gigabyte motherboard was good for something. Powering up video cards for voltage readings :)

[PizzaMan]

You should be able to tell in EVGA precision is it's downclocking or not. If it's not downclocking it's likely the card's vdroop that is the difference between idle and load voltages.