lycanwrath,
Pencil the resistor marked as "R711", it's located near the PCIe power connector on the backside in your pic.
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lycanwrath,
Pencil the resistor marked as "R711", it's located near the PCIe power connector on the backside in your pic.
Cool, cool, cool, will try that :)Quote:
Originally Posted by largon
Will this be for vpgu?
And also what are the points I need to use to measure the effective voltage?
That's vMEM. For some reason, which is now beoynd me, I assumed you were talking about vMEM pencil mod specifically...
Anyways, to even tell if vGPU pencil mod is possible I'd need a macro photo of the large'ish black rectangular chip labeled "L6713A" and it's immediate surroundings (area-of-interest greyed out in attached pic with the measuring points).
Attachment 92388
I'm looking for a V-mod for the Sapphire 4870 512MB and also the v-gpu points.
http://i228.photobucket.com/albums/e...l/DSC03467.jpg
http://i228.photobucket.com/albums/e...l/DSC03470.jpg
Any Idea?
Thanks!
mpc, do a macro-pic from that marked area: http://ceemic.pri.ee/hardware/sapphire_hd4870.jpg
Seems the same layout and possibly the same IC also: http://ceemic.pri.ee/hardware/hd4870/hd4870_02.jpg
So there applies this guide: http://forums.techpowerup.com/showthread.php?t=65199
Soldering point is other side PCB, beneath the IC.
http://ceemic.pri.ee/hardware/hd4870/hd4870mod_01.jpg (the black wire in the left leads to Vgpu measure point)
That's a plain-jane reference HD4870 albeit the blue color.
+1 that's a reference design so the standard techpowerup 4870 vmod guide will work for you :)Quote:
Originally Posted by largon
Thanks guys. I hope my card will run good under LN2 :D
Awhile back sapphire started releasing their 4870s with the new cooler (black one on top)...is this the exact same reference design?
http://www.sapphiretech.com/en/produ...5specimage.jpg
Just rip that Stock-Cooler off und you will see :D
I will once it comes
I have the Visiontek version of this card, 512mb though, it's definitely not ref design. I bought the right ohm pots just to find out when they got here i didn't have a reference design 4870 :( - anyone know of any guides for my card?Quote:
Originally Posted by gurusan
It is this one: http://www.newegg.com/Product/Produc...82E16814129113
The PCB appears to be like that 1gb Sapphire but it's not 1gb.
You need to post pics, so they we be able to find out where the vmod is.
Ok after I spent a lot more time researching it, it winds up being the non-reference as the Palit/Gainward, however I cannot find a volt mod for that either. I may be able to get pictures, I don't have a camera though, gotta wait for a friend to come over for those =(
For people that have done it, how much does the 4870 vMEM pencil mod help?
Thanks. :)
Hey, see posts 1317 to 1323. :)Quote:
Originally Posted by ziggo0
Hmmm, that makes a lot of sense now, sadly I only have 50k pots :(Quote:
Originally Posted by DemonEyez
Hi guys,I have a Gigabyte HD4850 512MB,this one,and I am looking for a pencil mod
Here's the back of the card:
http://img266.imageshack.us/img266/4959/pict0031hw8.jpg
I need a safe 24/7 pencil mod:yepp:
DuncanOc, please do a closeup macro pic from the PWM area in the front of the card. Also from that 20pin IC (on the right of the green sticker in Your picture).
hi, i need hard mod this cardQuote:
Originally Posted by ceemic
Either of you need to take a sharp macro pic of this area:
Attachment 92773
And post it here.
That's a Winbond chip. And Winbond doesn't make any PWM controllers.Quote:
Originally Posted by ceemic
;)
largon, tnx, I couldn't see the markings.
Yes, You pointed out the right place :up:
That chip next to the green sticker at the back of the card,in my card is the Gamer HUD chip.With that,I can overclock and overvolt(very little) the memory from a software called Gigabyte GAMER HUD.
The pic that I posted before is not mine.The only difference is that chip.
That chip in the front,its called NCP5392 and I found this pdf http://www.bdtic.com/DataSheet/ON/NCP5392.pdf
Sadly I dont have a digital cam,nor a multimeter at this time.
Sorry for my bad english:)
DuncanOc, measure resistance between pin17 and GND ;)
ceemic resistance pin17 and GND = 7,21 kiloOhm