Stains inside GPU blocks?

Scotspaul

Scotspaul

Scotspaul

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22 Oct 2010
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587
So I finally got my third card installed yesterday, really pleased its finally finished - I just havent had time recently.

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Whilst I had the first two cards out to fit the third, I noticed there is some staining inside the block at what I presume is the area where the GPU sits?

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They have only been fitted for about a month, they can't need cleaning already can they? :eek:
 
Man that is bad shouldn't be doing
I havn't git a clue maybe more info might help people like what fluid are u using also are all the blocks copper In the loop.
Also what are the temps like on that it must be able to keep a room warm ;)
 
Well I have to say i'm pretty ****ed off if it is plasticiser.

After the state my CPU got in I replaced all the original XSPC tubing with Primochill Advanced, and replaced the original Mayhems X1 black with fresh.
I obviously flushed the system with DI also.

:mad:
 
Why do you have so many connections on each card? It looks to me that your flow could completely bypass the top and middle cards via path of least resistance. Could your fluid be stagnating in those blocks, with very little flow?
 
Agreed with String, whats going on with the connections between each card?

You need to cap off the connections marked with an X. This will force the water through each card as it was intended.
Ole8fMd.png


I imagine the only card getting semi-decent temps would be the bottom one in your current configuration?
 
String said:
Why do you have so many connections on each card? It looks to me that your flow could completely bypass the top and middle cards via path of least resistance. Could your fluid be stagnating in those blocks, with very little flow?
Click to expand...

It's called parallel, it splits the flow evenly between all three cards as opposed to flowing through them sequentially (in series).

It won't be an issue.


CreAtiv3 said:
Agreed with String, whats going on with the connections between each card?
Click to expand...

Guys, I'm not trying to be a jerk but this is water cooling 101 stuff...
 
String said:
Why do you have so many connections on each card? It looks to me that your flow could completely bypass the top and middle cards via path of least resistance. Could your fluid be stagnating in those blocks, with very little flow?
Click to expand...

As stated by ubersonic, they are connected in parallel. Temps are within 2 deg C of each other at approx 50 C when gaming

When I had two in the loop, again in parallel, they were around the 40 mark, again within a couple C of each other.

Running parallel means i 'should' get the highest flow rate I can through the CPU block. (I think :p)
 
Scotspaul said:
Running parallel means i 'should' get the highest flow rate I can through the CPU block. (I think :p)
Click to expand...
What pumps are you using as running in parallel requires a higher pressure loop.

I wonder if there wasn't enough pressure to clean the blocks when you flushed it so thats just the original Mayhems X1 black fluid left behind
 
CreAtiv3 said:
What pumps are you using as running in parallel requires a higher pressure loop.

I wonder if there wasn't enough pressure to clean the blocks when you flushed it so thats just the original Mayhems X1 black fluid left behind
Click to expand...

Nope, it is the other way round, parallel reduces the pressure so you need high flow pumps

String said:
I understand what a parallel circuit is. There's nothing forcing the water through those 2 cards, only a series circuit will do that.
Click to expand...

The three identical blocks present the same restriction so flow will be equal through all 3 at one third the flow of the non-parallel section of the loop, gpu blocks dont need high flow, as demonstrated by his temps (i run the exact same setup and get 40C load temps on tri titans)

As uber says, this is basic stuff


If temps are fine then it is probably just some light staining from the Mayhems black you had in before, I would keep an eye on temps but if they dont deteriorate then dont worry about it, if they do then just strip them down and clean them
 
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andybird123 said:
...As uber says, this is basic stuff
Click to expand...

I'm sure it is, and with experience only in series loops I'm more than happy to concede the point.

It just doesn't look right to me, but it's pointless hijacking the thread with what I'm sure will be basic questions. Plus, I'm pretty sure I won't ever be using a parallel loop.
 
OK, a little more background info -

My Pump is a D5, it's in an XSPC Bay res. I had it set at 2.5 with 2 gpu's in the loop, its set at 5.0 currently now I have 3, but I was planning on throttling it back in a few days once it's had time to get rid of any bubbles in the loop.
Would about 3 be OK still or do I need to run it a bit quicker still now I have 3 blocks?

As far as the staining on the blocks, they were not in the loop when I had the original XSPC tubing. All i had at the time was the kit for a CPU, so pump/res, 280 rad and raystorm CPU block. When the temps started to creep up, I read up about it, then opened up the block to find loads of gunk. I then flushed the system before replacing the fluid and the tubing.
My concern is that the tubing was what was widely recommended as being free from the leeching plasticiser problem (It's Primochill advanced).

I guess i just sit tight and see what happens then?
 
If it helps, I am running an EK supremacy, two EK 670/760/970 blocks, a VRM mobo block, a chipset mobo block and two large radiators powered by a pair of D5's in series set to 2. Obviously I have a pair but I also have more blocks.
 
Simple wayu to figure out what it is. Drain your loop, take a piece of your tubing that you have been using for a while, let it dry and then cut it open(in half). If you see a white powder like substance or anything you can srape out easily with your finger nails then you got Plasticizes in your tubing.

Plasticizers can happen overnight when Loop Temps are to high. Now correct me if I am wrong, but I see a 120 and 240 rad in your case correct? In my opinion you should have 480 mininum.

If the color(it looks black to me) is a dark green or somewhat green, then it can also be patina(I highly doubt it is but even so)
 
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