Yeah, I really only noticed a couple of people killed their cards too. Maybe I missed some. However, I do agree that modding without a DMM is a very bad idea. Worse yet, soldering if you do not know how to do it. ;)
Printable View
Yeah, I really only noticed a couple of people killed their cards too. Maybe I missed some. However, I do agree that modding without a DMM is a very bad idea. Worse yet, soldering if you do not know how to do it. ;)
Anyone who RMA's a card they screwed while modding needs a long vacationQuote:
Originally Posted by largon
It is clearly stated in the forum rules and these things need to be enforced, Grow a pair and admit you pooched your card not Best-Buy.
The rules since no-one reads them:
10. Theft, Fraudulent activities & RMA's
The management of this Forum does not condone theft, trading in stolen property, fraudulent return of merchandise, or the aiding and abetting of those who do. Any such discussions regarding stolen property or fraudulent returns will be dealt with swiftly, and the offending member risks complete loss of membership privileges in our Forums.
on a lighter note, I just upped my 24/7 clock to 1.38v 880/1150mhz :) Anything past 880mhz requires a lot more voltage.
300mhz 1.08v idle as well. :D
gurusan,
I haven't followed this thread actively so I couldn't tell if there was a mass-extinction going on but I was dumbfounded to find the last 20-30 posts had a toll of several cards... I truly hope those proverbial cases were isolated and the same trend hasn't been going on from the beginning.
If you do a volt mod or bios mod, you void the warranty. To RMA an item that you yourself destroyed is fraud. It's your own business if you want to do this. XtremeSystems does not condone discussion of fraudulent RMAs. No more discussion please.
i have a DMM now but i dont know where to set the DMM. i have an option to choose from 200ohms, 2k, 20k, 200k, 2m, 20m ohms.
please help me where to set that & in which part of the card need to measure the resistance of vgpu and the memory.
http://img519.imageshack.us/img519/1190/overviewgs0.jpg
http://img185.imageshack.us/img185/6...cilvmemzh1.jpg
http://img503.imageshack.us/img503/9...2lh9er5tw6.jpg
i tried measuring the vmems measure point with my DMM but the result is not matching the range shown in the image above.
the result is random & far from the voltage resistance in image above :(
please mark where's the right measure point & the right DMM settings.
sorry for a noob question :(
btw:
i'm using Wheeler WDM-3547 DMM.
please help! :D
thanks in advance
Uh-oh...
I can't even figure out what you're trying to measure?
Voltage or the resistance of the mod points?
so i got a hold of another 4850 to pencil mod (AND NO I DID NOT BLOW MY FIRST ONE, I SOLD IT TO MY COUSIN - STILL RUNNING STRONG 900/1225 1.41 VGPU, 2.07 VMEM), this time i couldn't get the resistor to read under .8 for vgpu, and i kept scratching the top of it so eventually it wouldn't go under .90, then i penciled the pcb b/t the points shown on the pencil mod diagram and got that from stock 5.06 resistance down to 3.40.
so w/ the resistor at 1.0 and the resistance b/t the points at 3.4 i decided to boot up the comp, vgpu was at 2.05. (that was my mistake, but card is still ok).
shut it off immediately and had 1.0 on the resistor, then had 4.5 b/t the points, vgpu is 1.47 under load, haven't tested out ocing the 4850 yet since i am trying to get this 3110 cpu to hit 3.9 stable but i think i got a crappy one.
2.97 vmem? !?
Hi guys,
can anyone post the photo of 4870's v-core measurement point?
Thanks
Is getting a cheap DMM a bad choice? like... if I get a cheap one will it be like "meh, 1.25vgpu sounds about right" when it really is 1.5?
DJSUB, can you post a picture of your DMM plz :P I think you have to set it to 20.
I am using a cheap DMM and it works fine. Just get a cheap digital multimeter from Radioshack or something drizzt
Get a Nimipa 1400 and u should be fine...
k, ashame the one I had didn't work right... lol so much for "top quality"
lol, sorry guru, it was really late last night, should be 2.07 vmem.Quote:
Originally Posted by gurusan
ah ok that makes more sense
is there a vgpu / vmem modification for r700, if so, what clocks are expected?
One of my two cards wouldnt go lower than .9 too, must have spent 2 hours trying, the other one went straight down to .5 with just a few rubs.Quote:
Originally Posted by zbomb5610
I had to use silver paint to get the first card upto 1.4vgpu.
All's well on the visiontek 4870 front. Flashed to asus & e8500.
http://service.futuremark.com/compare?3dm06=7761786
does anyone could tell me whats the voltage convertion of 3.58k vgpu & 3.81k vmem?
how to convert the resistance value to real voltage?
also want to ask whats the voltage of 3.40k
sorry for a noob question.
vGPU 3.58Ω = ~1.65v
vGPU 3.4kΩ = ~1.75v
vMEM 3.81Ω = ~2.10v
ok thanks bro! :)Quote:
Originally Posted by largon
btw : how did you get the real voltage in dmm? is there a settings to get the real voltage?
thanks
Err...
I didn't measure anything to get those values. I calculated them based on the resistance a non-modded card referenced to the values you posted.
For example:
"vGPU 3.58Ω = ~1.65v"
Stock resistance between the mod points is 5.13kΩ, stock voltage is ~1.16v.
New voltage after resistance is lowered to 3.58Ω is:
original_voltage * (original_Ω / new_Ω)
->
1.16v * (5.13Ω / 3.58Ω) = 1.66v
*cough* ~1.65v :P *cough*
thanks bro for the big help! :D :up:
Nobody can help me? :(Quote:
Originally Posted by kur¡