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[Build Log] Project "Overkill" - Quad GeForce Titan's - Page 16

post #151 of 782
Thread Starter 
Went to pick up the GPU today and have some bad news,

Electronics place couldn't get the board hot enough to re-flow.

This is due to Restriction of Hazardous Substances Directive aka RoHS.

In a nutshell, prior to RoHS electronics manufacturers used lead based solder on their boards. Lead based solder has a very low melting point which makes it very easy to ref-low. However the copper/tin hybrid solder that complies with RoHS and is used on 680gtx's has an estimated melting point of 380-420 degree's Celsius.

Their machine can only re flow up to 350 degree's so when they tried to get it re flow it just didn't work.

The tech said he could use a soldering iron, flux and solder braid to remove the pins, but he couldn't guarantee it would work due to the layers of the Nvidia PCB (dual layers means solder in the center of the PCB has to be heated in addition to the surface solder), or that he wouldn't ruin the board.

I think at this point, unless I can find a place with a better re-flow machine in the next few days, I'm going to have to abandon this plan, and go with a PCI-Ex Riser option.

PCI-Ex riser has its own complications and the current design will need to be changed in the following ways

1) Moving from a EATX motherboard tray to an XLATX tray so that I have the extra slot outside the 8 slots for the sound card. (Luckily for me I have spare ones of these sitting around from another project)
2) Because the XLATX tray is higher, will have to move the top radiator to the front as there will not be the clearance available to fit in the top panel. This will also have to include replacing the front panel with 6 x fan cutouts instead of 3 x fan cutouts. I think I also have one of these somewhere (have to find it).
3) Because the front bays will only have 3 x 5.25 inch slots instead of 5 I'll have to move to a cylinder based res that does not use the front bays. This wont be an issue, local supplier has plenty of options.

In some good news, MIPS sent my motherboard block today, should be here Friday or Monday.

I'm aiming to finish off this rig by the end of next week, so there will be lots of updates from today onwards.
post #152 of 782
That's really unlucky that they can't get the top DVI removed hmmsmiley02.gif
At least you have a backup option though! Haha

Wouldn't 300+ degree temps damage the card?
....I'm confused thinking.gif
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post #153 of 782
Thread Starter 
Quote:
Originally Posted by ShineGraphics View Post

That's really unlucky that they can't get the top DVI removed hmmsmiley02.gif
At least you have a backup option though! Haha
Wouldn't 300+ degree temps damage the card?
....I'm confused thinking.gif

Sorry that's my fault I should have been clearer. They heat the whole PCB to raise the surface temperature evenly to prevent cracking and make the solder more pliable, but not to the point it will damage it.

The machine then has an arm that comes down and heats a tiny area around the solder that needs to be re-flowed, and the solder directly.

Its the rods/heating element on the arm that couldn't go above 350C.

The issue is this particular machine was made in 2001 which is before RoHs was widespread.

If they had charged me for any of the attempted work I might have been annoyed that they didn't realize that their machine wasn't up to the task before hand.

Edit : vertical pump stand / res assembled.

I'll probably order a 150mm tube for this later today, 250mm seems a bit much.

I've bought all the hardware (hole marker (punch), drill bits, square level, etc) I need to make holes in the case (4 per feet) which I will start on tonight and take more pics.






Edited by soth - 11/12/12 at 9:20pm
post #154 of 782
Ahhh that makes sense biggrin.gif

Good luck with the rest of the build, will definitely be watching this!
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post #155 of 782
Thread Starter 
So after calling about 6 places today I've given up on the DVI port removal, no one owns a machine that will do it frown.gif

So with that in mind I retrieved my other panels out of storage, I'm the process of transferring the two rads across to the new panel,





I've ordered an Aquacomputer radiator coupler, hopefully it will line up and mean I don't have to plumb tubing between each rad.



I've also ordered the modularity system interconnect plates to go with it.




From a visual check it looks like it will line up well , It's all due to arrive Friday, but I'll have a better idea before then.

So this is the case floor (still has the other front panel attached). I have to fit cabling, psu, the 4 pumps and their assembly, flow meters and the cold cathode power box. You can also see the XL-ATX motherboard tray in these pics.





It might seem like heaps of space but it will be pretty full once done, I'm in the process of measuring out where I will need to drill to attach the vertical stands for the pump.

I finished off the other side of the larger rad panel, wiring will be next, shouldn't be very long before i get this part done, hopefully tomorrow.



Everything is still on track to arrive by Monday latest (including motherboard waterblock - finally) biggrin.gif

More pics later tonight / early tomorrow depending on how late I finish and how tired I am smile.gif

Edit, almost forgot, picked up a pci-ex 1 x riser from jay car for $5 today,



Going to pull it apart and sleeve it, just haven't figured out just how I am going to sleeve it yet (one big piece of sleeve, or multiple pieces smaller sleeve in clumps of 4/8 pins)

I'm also waiting for a new Sound Blaster Z to arrive (review sample that a friend got to keep and doesn't want ), Eta is late this week.



It's still based on the sound core chip already found on the motherboard, but it adds sound core pro (replacement for THX/Ex Surround), has a better SNR of 116 and has Dolby Digital and DTS connect support (I don't use headphones much and route all my audio through spdif to a sony 7.1 system, so DTS connect / Dolby Digital has always been a requirement of mine for a sound card)

I think you can buy these retail in limited quantities at the moment, Creative have a Zx and ZxR coming out soon as well. The Zx is just the same card with a desktop volume and headphone extension. The ZxR has 124SNR and a daughter board that has an additional processor specifically for digital output, no reviews on if its any good or not yet, but if the Z is good I might be tempted to swap to the ZxR

If it ends up not being a very good card, I'll probably buy an Asus Phoebus that has the new Dolby Theater V4 standard (replacement for Dolby Digital Live) or something similar.

Unfortunately I can't use the Auzentech Forte 7.1 as I had planned to as I'm moving to windows 8 (no metro ui!!!! with classic shell) and the Auzentech drivers work with a few hacks but many of the features randomly turn on and off or don't work at all.
Edited by soth - 11/13/12 at 11:59pm
post #156 of 782
This is looking quite splendid smile.gif
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post #157 of 782
Thread Starter 
mmmm soundcard... just arrived more pics later.


post #158 of 782
Quote:
Originally Posted by derickwm View Post

This is looking quite splendid smile.gif

Indeed, build is coming along nicely.
 
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post #159 of 782
Thread Starter 
Not a very exciting update but,

I got the radiator coupler kits,




I have to hand it to fed ex, 3 days to get to Australia from Europe at a very reasonable shipping price is pretty awesome.

I also have the remainder of my lighting components, including uv leds x 20 and lamptron switches for power/reset/hdd and to control all the lighting.





I have a plan for a wiring harness for these, particularly for the on/off switch for the lighting, but I won't be able to get the spade clips until I go to a hardware store tomorrow morning.

This weekends focus is going to be drilling the holes for the pumps, installing the pumps and sleeving up/ connecting the pump wiring,

Once that is complete I'll finish the radiators on the front panel (lets hope that coupling adapter works to bridge them together in a single rad).

To save some space I ordered these 25mm thick adhesive thermal pads to give me greater options as to where flow meters are located in the build.



more updates during the weekend as I work through these tasks smile.gif
post #160 of 782
Thread Starter 
Well today was very disappointing frown.gif

When attempting to attach both 360mm radiators to the front panel using the coupling module, I noticed that there is a gap between each row of 3 x 120mm fans of 25mm

To attach the radiators the gap needs to be 35mm so that the screws line up and can be tightened..

I thought about making new holes with a rivet gun but the metal surround for the fan mount s just not thick enough and would more than likely bend/break

Mountain mods cant increase the gap to 35mm as there's simply no more room on the panel itself.

I'm starting to run out of patience/options. It seems every time Ii try to do something unique on this project it just blows up in my face.

relocating those radiators to an outside panel (such as the top one) wont make any difference as there will still be a 35mm gap between each radiator's screw holes...

I could remove one of the radiators but I really don't think a single 360mm radiator will handle an overclocked cpu, ram, and the plx/sas and sb chips (plx/sas chips run really hot)

Rad's lined up:



Space between each fan hole on the rads



and the space between each fan hole on the panel itself,



I'm goggling around to see if i can find a sheet metal place that will make me a a special panel for the top of the case that will allow me to use either these rad's, or use a second MO-RA 3 on the top of the case.

I've emailed mountain mods to see if they can make one but i suspect they will come back to me and say its a 7 week wait, which I'm not waiting on ...

I'll keep you posted when I know more.
Edited by soth - 11/16/12 at 11:26pm
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