pump/waterblock

drunkenmaster said:
Judging from the GPU temp flow isn't a problem, radiator cooling isn't a problem, only the cpu temps are and even hot IVY's should run significantly cooler.

I would consider, if you have enough room in there and you have access to the back plate, whacking it down to stock, checking temps, then taking off the cpu block, whack on the stock heatsink and checking temps against stock heatsink If its same/worse than stock heatsink.... there is a problem there, most likely with mounting. If its lower with water at stock than the stock heatsink, you could have a bad chip that runs stupid hot, mobo incorrectly setting volts so when overclocking you're simply using way higher voltage than you think you are and that is pushing temps way up.

It would seem, from the gpu working fine, that the problem is mounting somehow. It could be as simple as a dodgy mobo bios misreading temps way to high, seeing as its easy to check(and could even be listed as a fix on a new bios) I'd look into that as it won't take any time at all.

New block, there is a slim chance I guess that where IVY actually sits under the heatspreader could on a block that bows significantly, not be optimised at all for IVY and the contact is mostly over the gpu part of the die rather than CPU. but Ivy is so small I doubt that would be the case. I can't see a new waterblock itself will bring temps down, the best/worst blocks are only a few C apart, though if the mounting simply isn't giving enough pressure for an Ivy, a new block could fix that.


Definitely focus on mounting/cpu fault/mobo reading temp wrong. If that loop can cool a 7970 at load to 50C, it has no flow or cooling capacity problem.
Click to expand...

The measured difference between an EK Supreme and Supreme HF is only about 6C, so I'd say this adds weight to your most excellent diagnosis....
 
i'm using ek supreme lt 2009 i think it was released, really cant see how the mounting would be the problem i've had the block off 3 times re-applied thermal paste, the thumb screws are as tight as my fingers can turn them.. the block doesnt move at all and it seems to be covering the cpu well..


think i got the block in 2009 and been running it in my old system, destilled water and pt nuke.

edit, in windows my vcore is 1.224

http://skinneelabs.com/ek-supreme-supreme-lt/
 
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99ggmv.jpg
 
and that a 4.7 overclock ? i would say you aint far off temp wise tbh got some headroom to try 4.8/4.9 there altho would be good if you was 75 ish for 4.7 what i would expect with my (future) IB build
 
at 4.7, vcore 1.25 temps reach 90c+.

i would be expecting some where in the 70s with watercooling, i'm going to upgrade my loop on thursday anyway, new block and new pump/res and more mayhems blueberry coolant

just hit 85c 1.208vcore 4.6ghz :(
 
this is what i'm looking at, plus my 2 x 240mm rads am i likely to get much better results with this pump/res... only going for it for for easy installation

XSPCX2O 750 Dual 5.25” Bay Reservoir Pump x 1
EK Supreme HF CPU Waterblock - Copper Plexi x 1
Mayhems Pastel - Blueberry Blue Coolant 1L x2
Cooler Master 12cm Sickleflow Blue LED System Case Fan x3
XSPC 7/16" ID [16/11mm] High Flex Hose - Clear x2
Alphacool 120mm x 100mm Velcro Pad x2
OcUK Value PSU Bridging Connector (24 Pin) x1
£182.26
 
It's a personal preference, but I wouldn't got for the XSPC kit. They're ok, but the pumps they use aren;t particularly great. If you used two of them in series however.....
 
The fact that one of your cores shows a max of 77 while the middle 2 show 90 still points me to the heat not being taken uniformly from the chip - again this could be your CPU block not making good contact with the CPU or it COULD be due to the IHS on the chip not making good contact with the package beneath.
 
not tried any air coolers how ever... my bleeding skills are not as good as i first thought just spent the last 4-5 hours bleeding my system.. man theres got to be an easier way then this!! think when i upgrade my loop i'm going to make a t-line.

just about to test some temps hopefully a good improvement
 
whats your thoughts on this res/pump combo

LAI-DDC-1Plus-T-ULTRA - Laing DDC-1+ Ultra Pump 600 L/hr 18W (MCP355) : DDC-1+ T 950l/h

XSPC 5.25" Dual Drive Bay Reservoir for One Laing DDC Pump Multi Fascia
 
the 18w models are superb.

I use one of those in series with a 10W (or is 12w? Can't remember) so give me a really boosted flow (it's a 24/7 folding server, so it also acts as a redundant pump in case one of them fails)
 
right, well thats going to be my new setup with an ek supreme hf, just seems like my pump has no flow what so ever in this loop so hard to bleed it, was fine when i was running cpu loop only with 1 x 240mm rad, added gfx block and another(fatter)240mm rad and it doesnt like it :P
 
If you are going to go for a Dual bay res i would get one like this http://www.overclockers.co.uk/showproduct.php?prodid=WC-061-XS&groupid=962&catid=2133&subcat= (Which takes a D5 pump.)

I cant say anything bad about my D5.. 10x better than my DDC 18w i had that thing and it just made loads of noise and used to hum.. in the end i got annoyed and took it out.

There's not really a limit if you got D5 as they can handle a lot. Where with the DDC 600L/ph they start to get a little weak with 2+ blocks and 2+ rads.

My brother has one he's got 2x 120's, 1 x 240 rad and 1 cpu block and the water coming back on the return is a little weak imo. So to be on the safe side i would go D5 Vario then if its a little powerful you can just turn it down a notch or 2.
 
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