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Which 780 Ti should I get? Asus DirectCU II OC or EVGA SC with ACX cooler? - Page 5

post #41 of 46
Quote:
Originally Posted by Thready View Post

I never accused you of ANY of this stuff. You seem rather intelligent since you know what you want with your graphics card. I assumed you were using your own money. I don't even know how old you are and I am not assuming your parents are paying for anything. But just remember that if you mess with the voltages, and it breaks, and the manufacturer sees that the voltages were changed, then you can forget about an RMA. It happened to my best friend with his motherboard. His motherboard got too hot from the overclock and they refused the RMA. Just make sure you stay within the safe operating temperature. That's all. You probably know more about overclocking than I do. However I do know about dealing with shady manufacturers because they think an expensive part they gave me was broken from "abuse." And I would think twice before doing any of this to such an expensive graphics card.

I'm pretty sure eVGA doesn't work that way. They are the most liberal with their RMA policy out of every manufacturer, and it is this level of service that warrants the enthusiastic recommendations they receive from their customers.

Also -- the 780 Ti is an EXTREMELY robust card even in the reference design. The level of quality cannot be overstated, and thanks to hardware-level voltage limitations it would be exceptionally difficult to break one while it's inside your case.
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post #42 of 46
Quote:
Originally Posted by friend'scatdied View Post

I'm pretty sure eVGA doesn't work that way. They are the most liberal with their RMA policy out of every manufacturer, and it is this level of service that warrants the enthusiastic recommendations they receive from their customers.

Also -- the 780 Ti is an EXTREMELY robust card even in the reference design. The level of quality cannot be overstated, and thanks to hardware-level voltage limitations it would be exceptionally difficult to break one while it's inside your case.

Well as long as there are limits. My dad remembers when overclocking got started when he was into computers and it was very easy to have your motherboard turn into dust because of it.
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post #43 of 46
If it is going under water, you might want to consider the EVGA classified. It is only ~$40 more than the ASUS model. It might not be completely unlocked like the Kingpin, but you can still overvolt it to some idiotic levels with the classified tool.

Also, EVGA really doesn't care what you do to the card as long as you don't return it completely smashed to pieces. Heck, they even package thermal tape with some of their cards for the people who want to use aftermarket coolers.
post #44 of 46
Thread Starter 
Well, Classified costs 699€, SC ACX costs 645€ and Asus DirectCU II now costs 639€. I'll have to carefully weigh all the options. I thought this Classified was voltage locked as all the other cards, excluding the K|NGP|N.
post #45 of 46
The classified card is 100% voltage unlocked via software such as the classified overvoltage tool which takes all of 2 seconds to download.

the asus dcu2 card is 100% voltage unlocked via hardmods when using a soldering iron to short some laid out spots on the card if you wish to access voltages that way.


If you arent afraid to hardmod, the asus card is as good as it gets except for the kingpin cards, but this is where prices comes into play.


If you are strictly air cooling then the asus dcu2 has a slight edge over the classified from what ive seen, temp wise that is.

Overclocking wise the classified is better in general because most people are scared to hardmod, so....yeah.
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post #46 of 46
Quote:
Originally Posted by Strider49 View Post

Thanks for your feedback! thumb.gif Well, I really wanted to put the card under water in the future to hit those temps you are reporting and assist in the cooling of the GPU and hot VRMs, but that's not a good thing. I don't wanna mess things up and end up voiding the warranty.

On the other hand, a friend told me that I should not worry about those hot VRM temps reported by Guru (pretty much what you said in your last post, Two Cables), and that ASUS has an immaculate track record over the last few years regarding graphics cards coolers.

Btw, 1.000V?

I initially was a little worried about taking the air cooler off because of the warranty so I used Valley to stress the card at stock speeds on air first. I then did a moderate overclock on the stock cooler and bios to make sure the card was at least functioning. I chose the ASUS reference card because I was confident in the inherent quality of the brand. Having satisfied myself that the card was good, I removed and set aside the air cooler. The EK water cooler and backplate were easy to install and I would rate my skill at changing coolers as "confident but not expert". I just followed EK's instructions, used ArctiClean to clean everything down and got to it.

Once I verified the card under water, I searched the forums here for a new bios since, as you know, the card is voltage locked. The flashing was simple and unlocked the voltage and power target as well as altering the boost state.

I started overclocking very cautiously using the ASUS GPUTweak tool in small increments. I raised the clock 13MHz on the stock voltage at a time (because the OC guide advised multiples of 13) and ran Valley until artefacts appeared. I raised the voltage from 0.950 to 0.975 and did it again. I got to a clock of about 1248 before artefacts crept back. At that point I put the clock back to stock and raised the memory +50 at a time until I got to 7800. Memory has less of an effect on your performance than the core so I just stopped at that point. Temperatures on the GPU in my cooling setup (DC5, 140.2 60mm and 140.2 30mm with a 4770K in the same loop) was a stable 40C. At that point I raised the voltage to 1.000 and increased the clock by 13s till I got artefacts at 1313 then backed down one to 1300. The temp was now 46C.

I dare say I could increase voltage more but with the ramping up in temps I think I am getting to the point where the card is near the OC ceiling.

ASUS cards are well made. Providing you take your OC routine slowly, the card will protect itself when you go too far and you can back off. If the worst happens, reset to stock and reflash the default BIOS and refit the air cooler. At the very worse you would have to attempt an RMA but you chose ASUS because you had confidence in the brand.

One alternative is to source a card that has been set up with a watercooler at Retail. There is a UK vendor that charges you a fee for supplying the card pre-fitted with an EK block and backplate with a warranty from them. I can't list the shop here of course but they won't be the only one.
Edited by DanielCoffey - 4/8/14 at 11:58pm
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