Cooling help

robmac65

robmac65

robmac65

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1 Jul 2014
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60
Sorry about all the questions i seem to be asking, i'm new to this

Ok here is what i have so far

Your basket
Product Name Qty Price Line Total
EK Water Blocks EK-FC7990 SE - Acetal EK Water Blocks EK-FC7990 SE - Acetal £60.00
(£50.00) £60.00
(£50.00)
XSPC X2O 750 Dual Bayres/Pump (Black) V4 XSPC X2O 750 Dual Bayres/Pump (Black) V4 £59.98
(£49.98) £59.98
(£49.98)
Hardware Labs Black ICE Radiator GT Stealth 120 Hardware Labs Black ICE Radiator GT Stealth 120 £27.49
(£22.91) £27.49
(£22.91)
Bitspower G1/4" Black Sparkle Compression Fitting For ID 8MM OD 10MM Tube Bitspower G1/4" Black Sparkle Compression Fitting For ID 8MM OD 10MM Tube £2.99
(£2.49) £23.92
(£19.92)

Some 8/10 tubing and a phobya uc2 cpu block with a generic 240mm rad at the top but the fins are wide apart on that, but i,m still not getting that gpu to go lower then 75c under stress (boinc), what do i need to do now, that ek waterblock has gone down from when i bought it £40.

Will changing that rad to one of these Hardware Labs Black ICE Radiator GT Stealth 240 or the Hardware Labs Black ICE Radiator GT Xtreme 240 be better?

I have 2 x corsair sp120 performance on the 240 and 2 x sp120 quiets on the 120.


jpg images

Pic was before i put the 2nd quiet on the 120.
 
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Res to the cpu? will that be better?

I am going res>240 rad>cpu block>120 rad>gpu>res

Yes its a bit bit of tube from 120 to gpu i couldnt stop it kinking with less.

Thinking about it there will be more cooling the way you suggest doh!
 
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Ok thanks, i have re routed it now and took that big loop bit out.

Now res>cpu block>120 rad>gpu block>240 rad>res.


free upload

Have bled it all and with boinc running its hitting 66c and 60c on the gpu using de ionised water and biocide.with a bit of dye, but will those black ice gt240 stealth or gt extreme 240 be better than the oc cool one.

The mess of wires is my new fan controller which i will route out the back tomorrow so it looks better.
 
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Are both of the rads warm to the touch? My guess would be that you're at the limit of what your rad space can cool. Most people recommend 120mm per component plus an extra 120, so since a 7990 is basically two 7970s that would make a recommended space of 480mm.

Since you have 360 total space and they're slim rads too, that looks about right to me. Thicker rads would improve the performance by a few degrees or so, but you're mostly limited by the mounts in your case.
 
Thanks for the reply.

The top one is warmer to touch than the bottom but the top is cooling the gpu down and the back is cooling the cpu down and obviously the top will be as its having to cool down much warmer water.

So will i be better off putting another 120 rad at the bottom of the case then with push/pull.

And if i change out the top 240 to a black ice gt extreme 240 or do i need not bother with the top one at all, actually the gt 240 stealth has more surface area and that should be better.
 
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If you have the space for it, more radiator area will trump pretty much anything else you can do in terms of cooling performance.

The loop order doesn't matter since the water will reach an equilibrium temperature throughout the loop anyway.
 
Is your Cpu and Gpu OC'ed?, if it is depending on the OC 75 isn't bad

Also the that bay res 750 IS not great for your kind of setup, they are only normally good for cpu only loops with one rad.

YOUR graphic card is a huge heat generator, and in total you have 360 mm rad space for CPU and GFX.

I would be using min 480 total rad space for that setup (maybe its just me) but I always use 240 rads worth of space for each major heat source as a rule of thumb.


Just out of curiosity which corsair case it that?
 
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The case is a Carbide 500r.

The heat temperatures are idle 10c for Cpu and 35/34 or 35/0 (or it reports that under ulps) for the Gpu, and load 40c Cpu (all cores) and Gpu 75/65.

I am definitely thinking about adding a 2nd 120mm rad to either the bottom of the case or taking out the front fans and sticking a 240 rad there instead.

Will i need to change the pump on the reservoir to a stronger one or just see if it can handle it 1st.
 
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Just looked at the pump spec and it looks good to me, 750 liters per hour or 164 gallons per hour (2.7 gallons a minute) , seems strong enough to me???
 
Its the head pressure to push through all the blocks/rads, you have if you don't have enough pressure, the flow rate suffers and it doesn't shift heat so well. id get a D5 or one of the ddc's 4.0(I think they are are called).

When I bought one of the those 750 pump kits for my first build I asked the the guys would it be sufficient and they all said no, hence why I have a seprate d5 with top and a tube res now so when I add to it I know ill have enough pump for the job.

If you can fit a 240 rad in the front id do that rather than another 120 in the bottom


D5 without top (the top can increase performance even more)

Maximum Flow: 1200 lph (12V)
Maximum Head Delivery: 3.7m (12V)


Your pump

Maximum Flow: 750 lph
Maximum Head Delivery: 1.8m
 
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Re done the thing and ghettoized the base of the case by drilling shed loads of holes in it for ventilation

free image uploading


image upload no limit

res>gpu>top rad>cpu>bottom rad>res

Temps have dropped on the gpu under full load from 65c/75c to 58c/61c, i have no idea of why before there was such a big difference in the gpu cores temperatures as there is now only 3c, must have been air trapped or something or the flow was tosh, but i'm happy now.

Thanks for suggesting getting shot of the 120mm for a 240mm one it did the trick oh and a re route!
 
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