Adding a hd7990 to my CPU loop

[titchyyyy]

Alright guys,

So it's been a while since I set up my first watercooling loop (A basic loop) and I've just acquired a HD7990. The noise of this beast is way too loud for me to deal with and also comes with some low sounding coil whine when playing games at high quality/1440p (It doesn't happen with games that rely more on the CPU like WoW). I was going to send the card back and go with a 780ti but the performance of the 7990 seems to be higher (7990 higher frame rate at 1440p than the 780ti at 1080p in Crysis 3 for example)

Anyway, what more do I need for my loop to be able to add a HD7990 to the mix? I currently use a simple 120mm rad and a pump/reservoir combo (Can't remember the model of the pump or reservoir) which works fine with my i5 2500k @ 4.4ghz (53c full load). Could I just add a 240mm radiator to the top of the case or would I also need an extra pump?

Please remember that the HD7990 sits at 80c~ at full load with the XFX cooler, so it's going to add considerable amounts of heat to the loop.

Thanks for any advice you can give.

 

[Bart_Hunt]

You will have to find out what pump you have.
Each have its limits after all, especially if its older model.
General rule with amount of rads is 1 x 240 per high end component.
You could probably change the liquid to Mayhems Ice Dragon, i heard its best for hot systems.

 

[mjones1]

You will have to find out what pump you have.
Each have its limits after all, especially if its older model.
General rule with amount of rads is 1 x 240 per high end component.
You could probably change the liquid to Mayhems Ice Dragon, i heard its best for hot systems.

The general rule of thumb 240mm per part is a bit silly and overkill, I see far too many builds with a huge amount of radiator space.
Fluids hardly make a difference in temperature, not even 1c so overpriced unless you really want colours.
I would buy a 240mm rad minimum, 360 if possible.

 

[pastymuncher]

Where did this 240mm rad per performance part come from? I have always gone with a decent 120mm per part. Current setup was just because i got the second rad really cheap and wanted to see just how low i could get temps.

What case do you have? You are going to need a good 360mm rad to cool the 7990 and cpu comfortably. A good 120mm and 240mm would also work well. The 7990 blocks start at around £100.