Great !
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Great !
mad scientist ish
Very Nice.
http://www.xdevs.com/articles/6600le/12.jpg
jajajajaja
I had a 6800LE that realy kicked sum ass..Quote:
Originally Posted by TiN_EOF
The pipes where all unlockable to 1.16x1.6.
Stock clocks on the thing where 300mhz core 700mhz mem (ddr1)
Mine did, with vcore of 1.35v 460 on the core and 980 on the ram. Thats allmost 1ghz ddr1. Who said 6800's didnt clock well :rolleyes:
OT: Thats some sick modding, its been a while since I was last active here, but those compairisons with Hipro are not weird at all seeing your work.. :O
http://catimba.files.wordpress.com/2...or-pardal3.jpgQuote:
Originally Posted by strange|ife
ROLF
Wow, I've never seen anything like this, very impressive!
wowza!!!
Lol insane and freaky work. Well done.
I wanna see more stuff like this.
So its dead now? Or maybe you have some other 4850 to cut up and use with it ? :D
Интересно :)
complete win! amazing
any update on this?
Hm, about what? :)
Maybe some later with more factory-made DC-DC's mine designs
Great thread :up:
Crazy work :D
That`s totally sickness :up:
Some not-expected continue to this project :-D
Received two video's for repair yesterday, 9800GX2 (one of GPU's not detected) and 7800GTX 256 totally dead, "for parts" :D
First check of 7800GTX..
http://www.xdevs.com/images/frank/hole.jpg
Huge hole in PCB, where one of MOSFET's was on GPU VRM :-D Wow...about 4 layers inside was just broken... Shortcurcuited 12V to GND.
Had to drill hole even bigger, to remove SC :-D
Next step...yeah, took 4870 DC-DC "piece of card" and set up 1.3 Vgpu, 2.2Vmem volts on it. Checked and hooked up, replacing stock power inductors.
http://www.xdevs.com/images/frank/7800f.jpg
Checks....Volts are ok...
Plugging 7800GTX Radeon Edition into test rig..
http://www.xdevs.com/images/frank/7800f2.jpg
Beeeeep-bep-bep-bep.....Damn, no post, no VGA. Volts are just fine, it's not problem with them.
Had some thinking for hour or more...looked thru all the PCB, checked similar 7900GTX dead, no broken parts...
Then remebered, there is quite advanced PWM controller on 7800GTX-es, Primarion PX3535 3-phase. And it has Powergood signal like, to keep GPU in reset during power-on sequencing and stabilisation. Oh ,yeah, finding pinout of this PX3535, here we go...there is open-collector line with similar signal name. There is pull-up resistor to +3.3V just next to necessary pin. Measured voltage on it = yes, it's 0 V (Logic 0) here!. Cutting with knife that pin from signal, and again check...And YES, it's 3.3V now, Logic 1, Now GPU will think , "Power is OK" always :-D
http://www.xdevs.com/images/frank/7800f3.jpg
Putting card to test rig....Beep.....WOW...even forget to connect monitor output :D...Hooking it up and...
http://www.xdevs.com/images/frank/aqua.png
Welcome 7800GTX-256 Radeon power Edition :-D Worked without a single artifact. Will hook chiller cooling on card and change CPU to better, and will hunt some hwboints on it :D
:eek2:
Good luck with it, dude!
verry nice!! i would love to hear more from the results :)
Could you need a broken Gtx285?
:eek2: holly .... .....superb job :up:
those are skills...need them too :D
want to see reapaired 9800GX2 :)
That is something else TiN :up:
Are you related to Hipro by any chance :rofl:
Sebastione
To make franky from GTX285 and Radeon 4870 :-D ? Yes, but I think shipping is too pricey.
I have some plans to make 1kilowatt DC-DC specially for powering videocards :D
Preparing videocard for ocing in RIGHT way :D
http://www.xdevs.com/kb/mods/7800gtx_capmod1.jpg
Cap mod done.
http://www.xdevs.com/kb/mods/7800gtx_capmod2.jpg
Man this is an awesome thread to follow, keep it up :D
Brief report about initial tests
Config
Intel QX9650 C0 Retail
Gigabyte X48-DS5
2x512MB Aeneon DDR2-667 5-7-7 :doh:
Club3D GeForce 7800GTX 256MB + Radeon 4870 DC-DC power :hehe:
160GB with Windows XP 32bit
ENERMAX Revolution85+ 1250W
CPU Cooler: Eneim 1048 + Promodz CPU v2 + Xtremelabs.org Extreme Chiller
GPU Cooler: WILO StarRS 25/4 + Zalman WB5 + Xtremelabs.org Extreme Chiller
I had only 3mm mounting stuff, so needed to drill videocard a little :rofl:
http://www.xdevs.com/images/chiller/7800gtx1.jpg
Installed cooling, checked everything and fire all that stuff up.
http://www.xdevs.com/images/chiller/7800gtx2.jpg
Tuning voltages, VGPU to 1.75V, drams at 2.35V. Cooling down 10 liters of antifrezze with chiller to -20°C.
http://www.xdevs.com/images/chiller/7800gtx3.jpg
After few hours all pipes was frosty. I like frost :yepp: Will insulate later ofcourse
http://www.xdevs.com/images/chiller/7800gtx4.jpg
CPU can do 4.6-4.7 at 1.7V (too much, but no go with lower volts :(( in 3Dmarks. Card got 557/557/557 GPU clocks and ~1470 vmem. I was expecting more :(
http://www.xdevs.com/images/chiller/7800gtx5.jpg
That's not serious, will continue later.
http://www.xdevs.com/images/chiller/7800gtx.png
Damn, you're the man!
Making fixes like that may not me practical in daily use but hell they must be fun when it comes to ocing :D
Btw i dunno it's just my opinion but might get better ocing results if you remove ceramic caps and replace them with ultra low esr RF caps, i mean really low esr caps. Friend of mine tested this idea couple year ago, took P4 board with bulged caps in cpu vrm, replaced them with ultra low esr caps which capacitance is only fraction from original also esr and esl, still that board works like charm :)
Btw no.2 i've one bricked X48 Xtreme from gigabyte, i've plans to turn to adjustable DC-DC powersupply for gpus, @ 1.6V 150A easily =P