2x EVGA GTX 780i and heat problems

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Alec5442

Alec5442

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Jan 26, 2014
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Will two GTX 780ti's create alot heat? i believe i can get them for around $150 (Most likey around $500 off of ebay). the numbers might be mixed up so i will update the price when i find out.
My build will consist of
HAf X case
i7 4770k haswell CPU
H100i CPU cooler
ASUS MAXIMUS VI HERO Mobo
CORSAIR Dominator Platinum 16GB
SAMSUNG 840 EVO 500gb SSD
Western Digital 3TB HDD
EVGA SuperNOVA 1000 G2 80 PLUS GOLD Certified 1000W psu
ASUS MX239H Silver / Black 23" 5ms (GTG) HDMI Widescreen LED Backlight LCD Monitor x2.
Thanks
 
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photonboy
You may wish to avoid wording things the way you did as it doesn't sound legal. I'll ASSUME it is and answer your question though.

1) If you overclock the CPU, it is the CPU itself which will generate more heat, however you have a liquid cooler to exhaust that. The graphics cards might put out a little more heat if they were bottlenecked by the CPU, but this isn't going to make much difference.

2) There is a lot of heat generated by the cards. You need only look at the POWER drawn which is the same thing basically. That's why they have fans and heatsinks to cool them, and you require case fans to exhaust the heat.

Overclocking the GPU's is possible, and you should just look up GUIDES online if you wish as it's too much to answer...
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photonboy

photonboy

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Jun 20, 2006
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You may wish to avoid wording things the way you did as it doesn't sound legal. I'll ASSUME it is and answer your question though.

1) If you overclock the CPU, it is the CPU itself which will generate more heat, however you have a liquid cooler to exhaust that. The graphics cards might put out a little more heat if they were bottlenecked by the CPU, but this isn't going to make much difference.

2) There is a lot of heat generated by the cards. You need only look at the POWER drawn which is the same thing basically. That's why they have fans and heatsinks to cool them, and you require case fans to exhaust the heat.

Overclocking the GPU's is possible, and you should just look up GUIDES online if you wish as it's too much to answer right here. I suggest you don't overclock those cards unless you really need to otherwise they just run a lot noisier and may become unstable.

Why NOT overclock?
Your screens can only refresh at a maximum of 75Hz, though you'd likely be at 60Hz. Thus it can only update 60x per second. Thus, if your system can output more than 60FPS (monitor game with FRAPS) there's no point in getting more performance.

It's actually slightly more complicated than this as you can get a little less LAG by running at a higher frame rate (less sluggishness) however many people use VSYNC to avoid screen tearing anyway which then locks your frame rate at 60FPS. When using VSYNC ON at 60FPS, the ability to generate a higher FPS is pointless.

Other:
You may wish to investigate NVidia G-SYNC monitors in the future as well: http://international.download.nvidia.com/geforce-com/international/videos/NVIDIA_GSYNC_Product_Video.mp4
 
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06yfz450ridr

06yfz450ridr

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Nov 28, 2012
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those two cards are over kill for 1080p if thats what you are playing on, as stated above if your monitor s refresh is 60hz and you are running 100+ it really isnt needed but it will be smoother.

I wouldnt run vsync ever, vsync = input lag.

yourt monitor is capable of 75hz but for you setup I recommend at least 1440p for a better experience.

grab one 1440p and a decent 1080p for the same price and over clock your 1440p to 96- 120hz. i run mine at 96 hz and its awesome

or grab 3 decent 1080p monitors for gaming, 2 is only good for having like temp monitoring on etc

plus if you can grab me a legit 780ti for that price sign me up haha unless they "fell off a truck"
 
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06yfz450ridr

06yfz450ridr

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my 60hz monitor I would run over 100fps with no tearing but on my 1440p at 60hz it would tear like crazy for some reason.

it all depends on your refresh rate, esp with that powerful of a setup easily going over 60fps
 
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photonboy

photonboy

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Jun 20, 2006
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You always get screen tearing with VSYNC OFF, it's just a matter of whether it's obvious to you or not. If the screen image doesn't change you can't tell for example, or if the tearing is hidden near the top or bottom.

If you run at 180FPS on a 60Hz screen you'll actually have pieces from either THREE or FOUR different frames that the GPU has output. Anyway, I'm done.
 
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06yfz450ridr

06yfz450ridr

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that sounds much better haha

If only we could really get some for $150
 
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