Wee beastie

Biffa · 18 Mar 2010 at 09:19

Bitspower make the shortest 90deg fitting I think. Have ordered a couple last night. They are not rotating ones however. I've got the rotating one and the knurled section makes it too high.

After this it's new case time. Anything out there cheaper than a 800/700D but with the same featureset?

verbal · 18 Mar 2010 at 12:28

It depends on a couple of things. Does the bottom card sit in slot 6 or slot 7 at the back of the case?

Most cases have 7 slots and then a gap of of 2cm between the bottom edge of slot 7 and the floor of the case. So IMO if your card sits in slot 6 almost any case with the PSU at the top will do. If it sits in slot 7 how tall are the fittings?

If you do have to go for a new case how about a Cooler Master 840 for £150
http://www.overclockers.co.uk/showproduct.php?prodid=CA-159-CM

You can put the PSU at the top leaving loads of room below the bottom card.

If I was going to spend £210 I'd rather have a P80 Armoursuit or an X500 (both Lian Li). I'm not a fan of the Corsair 800D.

Biffa · 18 Mar 2010 at 12:50

My current case will take the PSU at the top or the bottom, problem is I have a whopping great Thermochill in there now

So we need a case that can take a minimum 120.3 in the top and a 120.1 at the back and probably a separate compartment for the PSU at the bottom.

edgedemon · 22 Mar 2010 at 20:34

Biffa - saw this comment on another forum for running a folding rig with multiple gpu's

So you will basically have 8 GPUs in that system? I think you are going to bump into some BIOS problems trying to get that many GPUs into a single system. The BIOS has to assign memory mapped I/O address space to each one, and you will hit the 32bit limit very quickly with that setup.

Read up on the Atlas Folder, to see what hoops they had to jump through to get a lot of GPUs running in the same system. Basically they had to get a specially coded BIOS and then do some Linux kernel hacking to get it working.

:confused:

Biffa · 22 Mar 2010 at 21:25

Thats for more than 4

edgedemon · 22 Mar 2010 at 22:29

the 8 gpu's in the quote refer to 4 dual gpu cards...

Biffa · 22 Mar 2010 at 22:48

No it doesnt, well what I mean is the Asus may have had some troubles but I think most of them were worked out with a recent normal bios, but thats one of the reasons I steered clear of the P6T7

Stan_Lite · 22 Mar 2010 at 23:35

CPC/Bit-Tech built (and still run, afaik) an 8 GPU rig with 4 GTX295s with no trouble at all. All they had to do was tweak affinities.

Biffa · 23 Mar 2010 at 02:09

Yeah I just think there are some mobos that struggle, and some that BURST INTO FLAMES!

Biffa · 23 Mar 2010 at 03:55

LATEST UPDATE

Been fiddling tonight and managed to get everything to fit together on the rig. So started laying out the tubing to see where the best runs are.

edgedemon · 23 Mar 2010 at 06:56

what case did you go for in the end?

Marine Iguana · 23 Mar 2010 at 07:13

Very nice

Biffa · 23 Mar 2010 at 09:01

Kept same case. Just different lower block on the fourth card and some creative use of fittings. Still not 100% happy with it. Just threw it together I'm what looked most logical last night.

vertica · 23 Mar 2010 at 10:31

mmm foldytastic indeed!
Isn't half the fun of building getting to the stage where you go oh #@%* how do i sort this out?

I still reckon your underestimating its potential though! The cards (at stock) should do somewhere around 65k ppd. OC'd (very easy to do and stable under water, but depends if this is feasible in the 'proffesional' location) they should hit ~80k combined. Plus the i7, although i imagine 8gpu clients will have quite a large cpu footprint + the business tasks on the cpu.

verbal · 23 Mar 2010 at 16:05

I like it. What size tubing is that? I think it's a good choice. I don't like the wide tubing a lot of people use (which is 0.5" I guess).

Biffa · 23 Mar 2010 at 19:20

It's 8/10mm same as I always use

Biffa · 25 Mar 2010 at 18:02

Leak tested the CPU loop last night. Left it running overnight after jury rigging the PSU to just run the pump.

No leaks so far.

Plan on putting a cheapo NVidia card in tonight and installing OS and drives etc, maybe run a couple of bigadv WU's on the i7 920 to see how far I can push the overclock and see what the temps are like.

Will upload some pics tonight.

SiriusB · 25 Mar 2010 at 20:16

You should get yourself a massive tank you can fill with water, and a tap marked Hot Water on the front of the case and fill in the blanks!

Any one fancy a GPU-powered brew? :eek:

Biffa · 25 Mar 2010 at 22:38

Bugger that I'm just going to heat the bath!

TheTross · 25 Mar 2010 at 22:41

Biffa said:
Bugger that I'm just going to heat the bath!

Don't you know that water and electricity don't mix?

/looks at thread again

Oh. Never mind.

Wee beastie

Man of Honour