Alright guys so I recently got 2x 7990s and have setup a water cooling loop and am testing them out. I am consistently hitting 90 degrees celsius when my cards are only running at 75%. I have one 240 rad in the front and one 280 rad up top. Is this not enough surface area to dissipate the heat or am i doing something wrong? Just wanted to see if anyone else had had luck water cooling 2x 7990s and see what their setup was. Thanks.
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2x 7990 water cooling not enough
- Thread starter joel1618
- Start date
You do not have enough radiator, correct. You are trying to dissipate ~750W of heat 2x375W).
I assume you have fans on the radiator. It should help if they are running at 100%, but is NOT a solution to your problem.
Which radiators do you have and what fans on them? What does your loop consist of and what is in it besides the GPUs?
I assume you have fans on the radiator. It should help if they are running at 100%, but is NOT a solution to your problem.
Which radiators do you have and what fans on them? What does your loop consist of and what is in it besides the GPUs?
- Thread Starter
- #5
Thanks yes this is what I figured. Here is as much info as I have.
:::::::
Everythings copper.
All fans are running at full speed.
The 240mm rad is a koolance 30fpi radiator
The 280mm is a Black Ice GT Stealth
The blocks are EKWB Acetol.
The res/pump is a Koolance RP-985
Yea I kind of figured I didn't have enough rad. Oh well not going to deal with it. Gaming is no issue I use probably 20% of the processing power of the cards but when doing a stress test they reach 100+ degrees celsius if run at 100%.
:::::::
Everythings copper.
All fans are running at full speed.
The 240mm rad is a koolance 30fpi radiator
The 280mm is a Black Ice GT Stealth
The blocks are EKWB Acetol.
The res/pump is a Koolance RP-985
Yea I kind of figured I didn't have enough rad. Oh well not going to deal with it. Gaming is no issue I use probably 20% of the processing power of the cards but when doing a stress test they reach 100+ degrees celsius if run at 100%.
- Joined
- Jun 28, 2012
Definitely isn't, it normally would take the 240 for a CPU with a decent OC and the 280 would handle a single GPU, just for rough math.
No way you're taking 750W with that.
Needs another 240 rad and some real fans.
- Joined
- Sep 15, 2007
- Location
- Small town Emlenton, PA
Put some 38mm 3000 rpms on there some good deltas.
- Joined
- Jun 28, 2012
Probably not if he's using 20% of the cards in games. I'm guessing 1080p, maybe 1440p.
So you have $1600+ in GPUs when a $250 GPU (7870/760) would be PLENTY? Dear lord man, what are you thinking?!!!!!
What is the rest of your system (CPU, Mobo, Power Supply).
- Joined
- Jun 28, 2012
You can mine with a single 7970 also. You won't ever make back that $1200 difference by mining.
You mine with 5870's and things along those lines. "bang for your buck" cards I hear yield the best margins.Well, Im not a miner, but I don't think anyone would pay $1600 to mine as they are power hungry beasts which mostly negates profits from doing so (unless you are not paying for the power you are using of course). Also, doesnt mining roast those cards as I believe that is GPU intensive too!
EDIT: apparently they are decent for mining.. my apologies.
EDIT: apparently they are decent for mining.. my apologies.
- Thread Starter
- #20
My thought process was I can have a super nice gaming computer and it'll pay for itself in about a year and a half. yea I don't pay for electricity. I'm not looking to make any kind of profit or anything really just for fun. I'll make about 2k a year. But in process i've learned a ton about water cooling that I didn't know before so that's a plus as well!
