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Getting new nvidia card need help - Page 2

post #11 of 24
Quote:
Originally Posted by Quesoblanco View Post

No.

You can run 670/680 sli on a 550 watt PSU http://www.guru3d.com/articles_pages/geforce_gtx_670_2_and_3way_sli_review,4.html

We decided to move away from Furmark in early 2011 and are now using a game like application which stresses the GPU 100% yet is much more representable of power consumption and heat levels coming from the GPU. We however are not disclosing which application that is as we do not want AMD/ATI/NVIDIA to 'optimize & monitor' our stress test whatsoever, for our objective reasons of course.

Our test system is based on a power hungry Core i7 965 / X58 system. This setup is overclocked to 3.75 GHz. Next to that we have energy saving functions disabled for this motherboard and processor (to ensure consistent benchmark results). On average we are using roughly 50 to 100 Watts more than a standard PC due to higher CPU clock settings, water-cooling, additional cold cathode lights etc.

We'll be calculating the GPU power consumption here, not the total PC power consumption.

Measured power consumption one card

System in IDLE = 140 W
System Wattage with GPU in FULL Stress = 279 W
Difference (GPU load) = 139 W
Add average IDLE wattage ~10 W
Subjective obtained GPU power consumption = ~ 149 Watts

Measured power consumption two cards in SLI x2

System in IDLE = 160W
System Wattage with GPUs in FULL Stress = 433W
Difference (GPU load) = 273W
Add average IDLE wattage ~20W
Subjective obtained GPU power consumption = ~ 293 Watts

Measured power consumption three cards in SLI x3

System in IDLE = 170W
System Wattage with GPUs in FULL Stress = 583W
Difference (GPU load) = 403W
Add average IDLE wattage ~30W
Subjective obtained GPU power consumption = ~ 433 Watts

I had already edited my post asking Shafty to disregard my opinion, but if you're gonna pick apart my post anyways... I don't trust your math. A GTX560Ti pulls a voltage (according to your charts) between that of a 670 and a 680. At a 90-95% CPU load and a 65-70% GPU load, My rig was pulling 475w with a single card. Adding a second card to that would obviously pull more. Sure, he'd probably be alright if he never stressed his computer, but then why buy the hardware?
 
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post #12 of 24
Wasnt trying to pick apart anything. I was saying his system will not pull that much power and I showed u. He can max both and be fine. Ivy bridge is super efficient. Those are not my numbers, they are from guru3d. You have an overclocked i7 nehalem, which takes way more power than i7 ivy bridge. As u can tell by the reviews he will have more than enough room to run any single card gpu or overclocked CPU on that power supply.



The gtx 670 is a super efficient card and only pulls 150~

overclocked 3770k is 250~

Overclocked i7 nehalem 400w~


Gtx 670 power consumption
http://www.anandtech.com/show/5818/nvidia-geforce-gtx-670-review-feat-evga/18
http://www.tomshardware.com/reviews/geforce-gtx-670-review,3200-14.html
http://www.anandtech.com/show/5818/nvidia-geforce-gtx-670-review-feat-evga/17
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_670/26.html


Overclocked 3770k 4.7 1.35v
http://www.legitreviews.com/article/1924/9/
http://www.bit-tech.net/hardware/2012/04/23/intel-core-i7-3770k-review/8

Overclocked i7 nehalem power consumption
http://www.tomshardware.com/reviews/overclock-core-i7,2268-10.html
http://www.bit-tech.net/hardware/2012/04/23/intel-core-i7-3770k-review/8
Edited by Quesoblanco - 2/9/13 at 5:03pm
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post #13 of 24
DP
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post #14 of 24
Quote:
Originally Posted by Shafty View Post

ive been leaning for the 670 just because of my psu but i money isnt the problem and if i can would go 680 for the futureproof but i guess either way 670 or 680 there both badass

Money isn't problem?

680 : MSI Lightning 680

670 : MSI PE, GB Windforce, EVGA FTW
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post #15 of 24
Sorry about that. I didn't realize Ivy scaled power -that- efficiently. SLI on a 500w power supply just sounds alien to me. But I'm running older gear. 250w... just wow. x3
 
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post #16 of 24
Thread Starter 
well with the info provided im going with the 680 i want the best of coarse now its a matter of GB windforce or EVGA signature 2. Those are the 2 ive been interested in due to cooling on them i have the bitfenix case and the motherboard sits flat not vertical so the card will sit upright and i have great ventilation on my side panel for either type of cooling but i would rather not have blower type fan.
post #17 of 24
Flip a coin. The gigabyte will run quieter and cooler though. Both companies have great support. EVGA card is clocked higher but not by much. It's really preference.
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post #18 of 24
Gigabyte 680 will run cooler....
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post #19 of 24
Thread Starter 
thank you for all the help
post #20 of 24
Thread Starter 
I know more ram is better but ive heard that unless you run 3d or triple monitor gaming you really dont need 4gb. I do use 3 monitors but only game on one.
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