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

post #1 of 46
Thread Starter 
Hi,

I'm about to buying the graphics card for my new PC and can't make my mind up about which one I should get.
First of all, let me state that I'm not considering the red side, because I plan on getting the Asus PG278Q Rog Swift monitor in June and have interest in G-Sync. Next, I only mentioned the Asus DirectCU II and EVGA SC ACX versions because these fit inside my budget and, as far as I know, ASUS and EVGA are the only two companies who offer a warranty period of 3 years on their graphics cards from the date of purchase in Europe, where I reside.

So, I can get the Asus for 635€ and the EVGA SC ACX for 645€. Which one should I get, considering that I'm building a custom WC in the Enthoo Primo for my CPU and should extend the loop to the VGA in the near future?

From the reviews I've seen, the ACX cooler performs better than the DirectCU II, maintaining lower load temps while making less noise. EVGA even wins in power consumption and comes with a higher OC from factory. The problem is that the Asus has a custom PCB and beefed up VRM, so should have better components, resist higher temps and last longer, theoretically at least. At the same time, I'm quite concerned about the VRM temps close to 100ºC reported by Guru in the Asus card review (the card will be on air in the first months).
post #2 of 46

Considering that you will eventually watercool the card, I would go with the DirectCU II for its superior non-reference design.

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 46
Thread Starter 
Thanks for your input.
If I replace the cooler on the ASUS card, will I be voiding the warranty? I know EVGA says explicitly that we can do that, as long as we don't screw up the PCB during installation and there are no leaks that destroy the card. If we put the stock cooler back in place when sending the card to EVGA, there should be no worries. But what about ASUS?
post #4 of 46
Quote:
Originally Posted by Strider49 View Post

Thanks for your input.
If I replace the cooler on the ASUS card, will I be voiding the warranty? I know EVGA says explicitly that we can do that, as long as we don't screw up the PCB during installation and there are no leaks that destroy the card. If we put the stock cooler back in place when sending the card to EVGA, there should be no worries. But what about ASUS?

 

I don't know, so the best that I can recommend of course is just browsing their site or looking on the internets. :)

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #5 of 46
You will void warranty with the asus but evga allows you to take the cooler off.
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Only computer :(
(16 items)
 
  
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i7 2600k Asus Maximus Extreme-z Msi gtx 970 Dominator Platinum 16GB 
Hard DriveHard DriveHard DriveCooling
Adta sp920 Seagate Barracuda 1tb WD 500GB blue Custom loop (Dazmode Darkside Flex kit) 
OSMonitorKeyboardPower
windows 10 Benq XL2411Z Corsair k70 RGB  Seasonic G-550w 
CaseMouseMouse PadAudio
Corsair 760t Steelseries Rival Steel Series QCK Bose Companion  
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post #6 of 46

After having my mits on the Asus ... DCII gets my vote. With the demand in the modding and extreme cooling community the card should hold its resale a bit better too...

 

good pcb layout

very highQ power phases

ready for 'hotwire' and mods

post #7 of 46

Not to mention, the DirectCU II GTX 780 Ti should have a higher overclocking potential, especially when watercooled.

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #8 of 46
Thread Starter 
Quote:
Originally Posted by Tillmander View Post

You will void warranty with the asus but evga allows you to take the cooler off.

It seems so: point 1 from this link --> https://www.asus.com/Graphics_Cards/GTX780TIDC2OC3GD5/HelpDesk_Warranty/
Quote:
Originally Posted by CL3P20 View Post

After having my mits on the Asus ... DCII gets my vote. With the demand in the modding and extreme cooling community the card should hold its resale a bit better too...

good pcb layout
very highQ power phases
ready for 'hotwire' and mods

I guess you're right. Doesn't the last point also apply to the SC ACX?
Quote:
Originally Posted by TwoCables View Post

Not to mention, the DirectCU II GTX 780 Ti should have a higher overclocking potential, especially when watercooled.

The question is voltages are locked on both the Asus and this EVGA card, so I guess the only benefit from water cooling would be much lower temperatures on both GPU and VRM. Am I right? Or are there any custom bios that can overcome this restriction?

I also read some complaints on the ROG forums from guys saying that ASUS restricted voltage raises even more in its card. I don't know if this is true though.
post #9 of 46

something also to consider..

 

each GPU's VID will differ .. this ultimately will change temps, power consumption and cooler efficiency...

these GPU cores are heaters and respond better to cooling than voltage increases, for air\water...your first challenge will be to keep it cool enough to worry about unlocked voltage ranges :)

 

*DCII OVP Disable program and mods are posted on KPC or attached  ASUSGTX780OVReworkSOP.docx 572k .docx file   Disable.zip 36k .zip file  

post #10 of 46
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post

something also to consider..

each GPU's VID will differ .. this ultimately will change temps, power consumption and cooler efficiency...
these GPU cores are heaters and respond better to cooling than voltage increases, for air\water...your first challenge will be to keep it cool enough to worry about unlocked voltage ranges smile.gif

*DCII OVP Disable program and mods are posted on KPC or attached  ASUSGTX780OVReworkSOP.docx 572k .docx file   Disable.zip 36k .zip file  

Didn't know about that. But there should be some sort of tolerance that prevents great variances in voltage, temps or power consumption from occur, right? Then one could ask: "What do you mean by great variances?" smile.gif

I don't really have the skills or the guts to do that kind of thing to a graphics card. What if I screwed all up and voided the warranty consequently? There's so much money involved...

In terms of raw cooling performance, is EVGA's ACX cooler really superior like reviews show? Or are those differences pretty much insignificant in real-life?
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