Sign in with
Sign up | Sign in
Your question
Solved

2x EVGA GTX 780i and heat problems

Last response: in Graphics & Displays
Share
January 27, 2014 6:03:49 PM

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

Best solution

a b K Overclocking
a c 179 à CPUs
January 27, 2014 6:17:36 PM

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/in...
Share
a b K Overclocking
a b à CPUs
January 27, 2014 6:27:13 PM

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"
m
0
l
Related resources
a b K Overclocking
a c 179 à CPUs
January 27, 2014 6:34:22 PM

VSYNC=Input lag (agreed)

however,
VSYNC OFF = screen tearing

That's why I linked the video above that explains this better. There are some games where it's barely noticeable, and others where it's HORRIBLE. Far Cry 3 for me was unplayable with VSYNC OFF.
m
0
l
a b K Overclocking
a b à CPUs
January 27, 2014 6:41:09 PM

"connections" to get 780ti for $150 must be illegal and criminal as it's way below cost. I hope families aren't suffering for your cheap gaming pleasure!!
m
0
l
a b K Overclocking
a b à CPUs
January 27, 2014 6:43:21 PM

photonboy said:
VSYNC=Input lag (agreed)

however,
VSYNC OFF = screen tearing

That's why I linked the video above that explains this better. There are some games where it's barely noticeable, and others where it's HORRIBLE. Far Cry 3 for me was unplayable with VSYNC OFF.


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
m
0
l
a b K Overclocking
a c 179 à CPUs
January 27, 2014 6:57:45 PM

06yfz450ridr said:
photonboy said:
VSYNC=Input lag (agreed)

however,
VSYNC OFF = screen tearing

That's why I linked the video above that explains this better. There are some games where it's barely noticeable, and others where it's HORRIBLE. Far Cry 3 for me was unplayable with VSYNC OFF.


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


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.
m
0
l
a b K Overclocking
a b à CPUs
January 27, 2014 7:01:56 PM

Yeah i think i may actually report this post, because a 780ti for $150 is in no way legal. The only people who get cards for that low price are reviewers. they don't pay, but they don't get to keep the card either
m
0
l
January 27, 2014 7:20:19 PM

CORRECTION: He said $510 each for out of box refurbished.
m
0
l
a b K Overclocking
a b à CPUs
January 28, 2014 9:15:14 AM

Yes, but his initial post before editing said "my family has connections" lol and there was no reference to any other price. But $500 refurbished is a much more legal sounding price....
m
0
l
a b K Overclocking
a b à CPUs
January 28, 2014 9:45:06 AM

Brantyn Gerik said:
Yes, but his initial post before editing said "my family has connections" lol and there was no reference to any other price. But $500 refurbished is a much more legal sounding price....



that sounds much better haha

If only we could really get some for $150
m
0
l
a b K Overclocking
a b à CPUs
January 28, 2014 9:52:07 AM

I'd buy and resell, which is exactly why the 150 price is so not possible legally
m
0
l
!