Overclocking fun on the X850XT PE - Page 3

=ACID RAIN= · 05-10-2006, 07:09 AM

Me of course, but since the points were so small, I watched it melt on just enough to stick and then hot glued the connection so I wouldn't risk damaging anything. I guess I'll tin the wire a little heavier next time and make sure the connection is good and solid. Just gotta make sure I have no bleeding on the sides, don't want to short anything

rhino56 · 05-10-2006, 08:15 AM

yeah the newer cards keep getting smaller and smaller to do the mods.

=ACID RAIN= · 05-10-2006, 08:37 PM

Ok, update!

Got the mod back together and it's solid now, but since the contact points are so fragile, I have to be careful. Also, the voltage regulators are ALL burning up! Jesus! So I have to do some more work on cooling the regulators before I go higher. I've also got a ~0.10v droop going on under load, which can partially be attributed to the raging heat coming from the regulators and sensor chip. Man I've never seen a card get so hot! Even the PCB in some spots is too hot to hold

I got 7801 though! 670/651 on 1.75v (1.65v under load)
http://service.futuremark.com/compare?3dm05=2008172

I've dropped it back down to 650/650 right now, and 1.65v.

rhino56 · 05-11-2006, 04:21 AM

i cant see it because i think the orb is down right now but did it make on the first search page?

thats a nice score really

i cant wait to start benching again.

=ACID RAIN= · 05-12-2006, 01:50 PM

I've got a new CPU now so this should help a little too

I had a plan on how to get the vmem done but it didn't work out. I was going to put a 10k VR inline with a 10k normal resistor to achieve 20k for the mod, but for some reason it takes too long to load the voltage through the two resistors. It's about a 1/2 second lag time, which I wasn't anticipating. I thought about using it anyway, but the rest of the card initializes too quickly, so I don't feel safe loading up the card while the memory waits for voltage. On top of that, what does the sensor chip do if the voltage value is zero? Too many questions, so that was a no-go.

Anyone have some 20k variable resistors? I need two. Radio shack is too f*&%$#%# stupid to carry them

Mark620 · 05-12-2006, 08:38 PM

Quote:

Originally Posted by =ACID RAIN=

Radio shack is too f*&%$#%# stupid to carry them

Radio Shack - Uggggg

rhino56 · 05-12-2006, 11:42 PM

Quote:

Originally Posted by =ACID RAIN=

I've got a new CPU now so this should help a little too

I had a plan on how to get the vmem done but it didn't work out. I was going to put a 10k VR inline with a 10k normal resistor to achieve 20k for the mod, but for some reason it takes too long to load the voltage through the two resistors. It's about a 1/2 second lag time, which I wasn't anticipating. I thought about using it anyway, but the rest of the card initializes too quickly, so I don't feel safe loading up the card while the memory waits for voltage. On top of that, what does the sensor chip do if the voltage value is zero? Too many questions, so that was a no-go.

Anyone have some 20k variable resistors? I need two. Radio shack is too f*&%$#%# stupid to carry them

i may have some, ill check and see. i see you are running the cpu tests, no need to. are you tweaking the os much?

=ACID RAIN= · 05-13-2006, 12:13 AM

I'm just tweaking the CPU to a daily overclock speed. I think I've found it, since prime is still going strong now after a couple of hours at 2900. The real tweaks will be the drivers and the card itself.

Now that I've got one less core to deal with, the CPU is much cooler and so is the air the fans blow out into the case (only 100 watts now, man). I bought two rheostats that I'm going to hook the fans to so I can manually crank them when benching and then drop them back down after I'm done

. Once I get the VDD and VDQ mods done on the x850, then I can get serious about going for the first page!

rhino56 · 05-13-2006, 12:41 AM

i dont have any 20K but i do have some 50K which should work fine, pm me your addy and ill send them out to you.

what OS are you using?

=ACID RAIN= · 05-13-2006, 11:23 AM

I'm on xp pro

PM sent, thanks!

05-10-2006, 07:09 AM	#21 (permalink)
=ACID RAIN= Chief Warrant Officer Join Date: Jan 2006 Location: TX Posts: 1,225	Me of course, but since the points were so small, I watched it melt on just enough to stick and then hot glued the connection so I wouldn't risk damaging anything. I guess I'll tin the wire a little heavier next time and make sure the connection is good and solid. Just gotta make sure I have no bleeding on the sides, don't want to short anything __________________ Personal Site: http://www.goinglimp.com COD2 Clan: http://www.arsr-clan.com

05-10-2006, 08:37 PM	#23 (permalink)
=ACID RAIN= Chief Warrant Officer Join Date: Jan 2006 Location: TX Posts: 1,225	Ok, update! Got the mod back together and it's solid now, but since the contact points are so fragile, I have to be careful. Also, the voltage regulators are ALL burning up! Jesus! So I have to do some more work on cooling the regulators before I go higher. I've also got a ~0.10v droop going on under load, which can partially be attributed to the raging heat coming from the regulators and sensor chip. Man I've never seen a card get so hot! Even the PCB in some spots is too hot to hold I got 7801 though! 670/651 on 1.75v (1.65v under load) http://service.futuremark.com/compare?3dm05=2008172 I've dropped it back down to 650/650 right now, and 1.65v. __________________ Personal Site: http://www.goinglimp.com COD2 Clan: http://www.arsr-clan.com

05-12-2006, 01:50 PM	#25 (permalink)
=ACID RAIN= Chief Warrant Officer Join Date: Jan 2006 Location: TX Posts: 1,225	I've got a new CPU now so this should help a little too I had a plan on how to get the vmem done but it didn't work out. I was going to put a 10k VR inline with a 10k normal resistor to achieve 20k for the mod, but for some reason it takes too long to load the voltage through the two resistors. It's about a 1/2 second lag time, which I wasn't anticipating. I thought about using it anyway, but the rest of the card initializes too quickly, so I don't feel safe loading up the card while the memory waits for voltage. On top of that, what does the sensor chip do if the voltage value is zero? Too many questions, so that was a no-go. Anyone have some 20k variable resistors? I need two. Radio shack is too f*&%$#%# stupid to carry them __________________ Personal Site: http://www.goinglimp.com COD2 Clan: http://www.arsr-clan.com

05-13-2006, 12:13 AM	#28 (permalink)
=ACID RAIN= Chief Warrant Officer Join Date: Jan 2006 Location: TX Posts: 1,225	I'm just tweaking the CPU to a daily overclock speed. I think I've found it, since prime is still going strong now after a couple of hours at 2900. The real tweaks will be the drivers and the card itself. Now that I've got one less core to deal with, the CPU is much cooler and so is the air the fans blow out into the case (only 100 watts now, man). I bought two rheostats that I'm going to hook the fans to so I can manually crank them when benching and then drop them back down after I'm done . Once I get the VDD and VDQ mods done on the x850, then I can get serious about going for the first page! __________________ Personal Site: http://www.goinglimp.com COD2 Clan: http://www.arsr-clan.com

05-13-2006, 11:23 AM	#30 (permalink)
=ACID RAIN= Chief Warrant Officer Join Date: Jan 2006 Location: TX Posts: 1,225	I'm on xp pro PM sent, thanks! __________________ Personal Site: http://www.goinglimp.com COD2 Clan: http://www.arsr-clan.com

05-10-2006, 08:15 AM	#22 (permalink)
rhino56 Administrator General Join Date: Feb 2006 Posts: 6,813	yeah the newer cards keep getting smaller and smaller to do the mods.

05-11-2006, 04:21 AM	#24 (permalink)
rhino56 Administrator General Join Date: Feb 2006 Posts: 6,813	i cant see it because i think the orb is down right now but did it make on the first search page? thats a nice score really i cant wait to start benching again.

05-13-2006, 12:41 AM	#29 (permalink)
rhino56 Administrator General Join Date: Feb 2006 Posts: 6,813	i dont have any 20K but i do have some 50K which should work fine, pm me your addy and ill send them out to you. what OS are you using?