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OCN's V'mod Squad's, Volt Mod Essentials! - Page 12

post #111 of 1500
I'd at least wait for a digital DMM before the actually testing the volt mod, also I'd suggest that you practice soldering on some other things with a PCB like an old GPU, soundcard etcc
post #112 of 1500
Thread Starter 
Quote:
Originally Posted by Voltage_Drop View Post
Once we verify the resistance with a DMM then you will solder on the appropriate size resistor. And you dont have to solder directly to the uP6201 IC, we can find an alternate mod point located at one of the resistors around that IC which is a lot easier to solder on. I completely agree that the pins are very small and I have never soldered directly to an IC that small, only ones like your uP7701 have I soldered directly to. And you will have to adjust the voltage manually to compensate for the increase in frequency on the core. Dont give up yet, you will thank me later once you see the results and feel the sense of accomplishment from a functional mod along with the HW points

@PizzaMan, I found another IC which is for the 4870 and another data sheet link as well, I am on a roll tonight

Also found another datasheet link and the uP6201 sheet in a page or two back

http://datasheetz.com
Updated this IC and link.

I have my account set to show 100 posts per page. I only have two pages ATM. I didn't seem to find it scrolling.
    
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post #113 of 1500
Sorry about that Pizza, I should have been a little more elaborate. Here is the other data sheet link. And which IC are you missing the uP6201 or were you just inquiring about the data sheet link? Either way here they both are . Let me know if I misunderstood you and I will give you what you need

http://chipmanuals.com/datasheets/history/index.html
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post #114 of 1500
Thread Starter 
You got it. Updated.
    
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post #115 of 1500
Quote:
Originally Posted by Voltage_Drop View Post
Okay here is the data sheet for the Vmem which is the uP7701. To find the right VR size we need for you to measure the resistance of pin#8 ground -> pin #7 FB. Give me a second and I will mark the spots on the IC to make it easier for you. Still trying to locate the uP6201 data sheet which I thought we had but apparently not. Just a sec

Okay here is the measuring points for you to measure the resistance on the IC with a DMM

@PizzaMan found another data sheet site for the list:

http://chipmanuals.com/datasheets/hi...09/2/12_3.html
@VOLTAGE DROP.
Man this wont work...57xx series cards have vDD and vDDQ and therefor its impossible to vmod the MEMORY voltage.I know because i tried and i modded both controllers responsible for the job.(look closely and u ll spot a second identical uP controller nearby the one u try to mod)

The best bet for our friend would be the vGPU mod that is REALLY simple since it is the same as 38xx and 4850 series cards with the uP6201BQ controller.
U can do this by looking and geting help from here as a reference.This is the,almost identical to 5750,4850 cGPU mod.http://www.techpowerup.com/articles/...voltmods/151/2
U must llok for connection beteewn the pin 13 and a spot nearby in order to solder it to the ground.Cmon!Piece of cake if u have a DMM!!!
http://www.techpowerup.com/reviews/S.../back_full.jpg
Edited by theo.gr - 1/6/10 at 10:17am
    
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post #116 of 1500
Quote:
Originally Posted by theo.gr View Post
@VOLTAGE DROP.
Man this wont work...57xx series cards have vDD and vDDQ and therefor its impossible to vmod the MEMORY voltage.I know because i tried and i modded both controllers responsible for the job.(look closely and u ll spot a second identical uP controller nearby the one u try to mod)

The best bet for our friend would be the vGPU mod that is REALLY simple since it is the same as 38xx and 4850 series cards with the uP6201BQ controller.
U can do this by looking and geting help from here as a reference.This is the,almost identical to 5750,4850 cGPU mod.http://www.techpowerup.com/articles/...voltmods/151/2
U must llok for connection beteewn the pin 13 and a spot nearby in order to solder it to the ground.Cmon!Piece of cake if u have a DMM!!!
http://www.techpowerup.com/reviews/S.../back_full.jpg
Okay from the pix provided I did not notice the second IC for the mem so thanks for the advice. As for the GPU mod I had already advised him to look for an alternate mod point at one of the resistors because he was afraid to solder on such a small pinout, which is understandable, I wouldnt solder on something that small either, afraid of bridging pins. Just waiting on the OP to get a DMM to measure the resistance to locate the alternate point because I dont have the card in hand. And yes I already know that it is #13 for FB as I have already modded this IC on my 2600Pro and have the data sheet in hand.
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post #117 of 1500
Quote:
Originally Posted by Voltage_Drop View Post
Okay from the pix provided I did not notice the second IC for the mem so thanks for the advice. As for the GPU mod I had already advised him to look for an alternate mod point at one of the resistors because he was afraid to solder on such a small pinout, which is understandable, I wouldnt solder on something that small either, afraid of bridging pins. Just waiting on the OP to get a DMM to measure the resistance to locate the alternate point because I dont have the card in hand. And yes I already know that it is #13 for FB as I have already modded this IC on my 2600Pro and have the data sheet in hand.
Good!
Actually i find it rather easy to solder on a pinout cos of the clearance around it...I have my own method of temporary insulation!It consists of aluminum sheet our moms use and the soft POS we use to stick posters on the wall!!!!
Combining these too i always succeed on my soldering even if its very tight!
I might post a guide for this thread tomorrow!!!
Anyway good luck to OP!



PSi also noticed after careful observation that 5750 uses 2phases only for vGPU and 2 for memory unlike 5770 that uses 3 vGPU and 3 for memory.
That justifies the uP6201 right?)
    
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post #118 of 1500
hey guys
can sum1 provide me sum link to basic soldering
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post #119 of 1500
Quote:
Originally Posted by p1tbull View Post
hey guys
can sum1 provide me sum link to basic soldering
http://www.xtremesystems.org/forums/...d.php?t=115387
I think u wont find anything better in the whole WEB!!!
Until vmod essentials thread is complete THAT IS!
    
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post #120 of 1500
Thread Starter 
Quote:
Originally Posted by theo.gr View Post
http://www.xtremesystems.org/forums/...d.php?t=115387
I think u wont find anything better in the whole WEB!!!
Until vmod essentials thread is complete THAT IS!

Those links look good enough to add to OP. Thx man



oh, and for the tiny IC soldering...it can be done it you're good with a solder sucker. Just drop a lot of solder and then suck if off really quickly. Takes some practice tho.
    
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