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[Official] ASUS Crosshair V Formula (990FX) club - Page 49

Poll Results: Seperate Lists

 
  • 34% (35)
    Should I leave the list combined for both the CHVF and CHVF-Z
  • 65% (67)
    Seperate the lists
102 Total Votes  
post #481 of 9900
Quote:
Originally Posted by Tweeky View Post
go underneath the MB
Oh they're all running underneath the MB heh. The problem is where to go from there. I'll post pics when I'm finished.
Quote:
Originally Posted by Bear907 View Post

I too am at a loss on routing that molex to the board. I see little choice but to run it off the same side as the 24pin, but I don't like having a cable across the board like that. I've never had a board that had a molex in that spot for multi gpus
I'm thinking I will just run it under the mobo tray and route the cable out under and back in through an empty pci-e shield.
post #482 of 9900
that molex cable is only needed to either power more gpus, or u can use it for a fan somewhere.. its not actually needed for a 2 card configuration, im not using it. and i dont plan on it. IMO that's the only downfall to this board is that connector.... asus really could have planned that better IMO
post #483 of 9900
Quote:
Originally Posted by Chuckclc View Post
Whats the difference between the formula and extreme? I noticed the CHIV extreme came out, extremely late. And was extremely expensive. What warrants the price increase over the formula version?
The crosshair iv extreme had the Lucid chip that would allow SLI to run with out a hack
The new boards with the 990fx chipset has the capability to run SLI on it own there for the need for a extreme board is less likely
    
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post #484 of 9900
Quote:
Originally Posted by dustin88 View Post
that molex cable is only needed to either power more gpus, or u can use it for a fan somewhere.. its not actually needed for a 2 card configuration, im not using it. and i dont plan on it. IMO that's the only downfall to this board is that connector.... asus really could have planned that better IMO
I ran a direct line from the PSU to that connector and went along the rear of the board against the rear of the case. Unfortunately all PSU four pin cables have multiple plugs on them so one lays on the rear of the board. I used that card slot for the power switch for my cold cathode lighting as the space is partially blocked. I spaced the cable slightly away from the case so it runs under the edge of the dual GPU cards I am using.

Since I am using two 6970 GPU I am using the power connector we are talking about. The only reason not to put the connector somewhere else on the board for easier access is high current draw. It may have created noise or the copper on the PC Board is not capable of easily carrying the current load. As I mentioned previously, a dual ATI 6970 Crossfire X setup can draw roughly 470 watts. At 12 VDC that is 39 amps! That is why there are so many power input connectors on the board. In anticipation for Bulldozer and using multiple high power GPUs I used a 1200 watt PSU.

Asus states the using high power GPUs and not using the extra cable can cause the computer to become erratic. Basically a power brown out as the GPUs increase current draw from the normal connectors that power the CPU. Thus, there are redundant power sources to balance the current draw.

I have a lot of photos of this new build and when I get a few extra minutes I will post some of them.
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post #485 of 9900
Quote:
Connect the 4-pin EZ_PLUG power plugs to ensure sufficient power supply when you install multiple graphics cards.
Quote:
Originally Posted by dustin88 View Post
that molex cable is only needed to either power more gpus, or u can use it for a fan somewhere.. its not actually needed for a 2 card configuration, im not using it. and i dont plan on it. IMO that's the only downfall to this board is that connector.... asus really could have planned that better IMO
It might not be necessary but... Well my 6950's run at 1.3v and I'll most likely oc my 9800gt once I get it in so the molex is a plus. Also.. I'd assume it's a power feed not draw so hooking up a fan wouldn't get you anywhere. Considering the 8 fan headers scattered about the mobo.
post #486 of 9900
very true. but for my card setup and even my future plans with the 7 series, i wont ever need that molex connector. so it will just sit there and look shiny

EDIT: so, when i finally get a 6 series or 7 series cards, its suggesting to runa 4 pin from the PSU to the molex in the motherboard.. jsut making sureim reading all of this properly
Edited by Narokuu - 6/18/11 at 12:56pm
post #487 of 9900
Quote:
Originally Posted by jjceo View Post
I ran a direct line from the PSU to that connector and went along the rear of the board against the rear of the case. Unfortunately all PSU four pin cables have multiple plugs on them so one lays on the rear of the board. I used that card slot for the power switch for my cold cathode lighting as the space is partially blocked. I spaced the cable slightly away from the case so it runs under the edge of the dual GPU cards I am using.

Since I am using two 6970 GPU I am using the power connector we are talking about. The only reason not to put the connector somewhere else on the board for easier access is high current draw. It may have created noise or the copper on the PC Board is not capable of easily carrying the current load. As I mentioned previously, a dual ATI 6970 Crossfire X setup can draw roughly 470 watts. At 12 VDC that is 39 amps! That is why there are so many power input connectors on the board. In anticipation for Bulldozer and using multiple high power GPUs I used a 1200 watt PSU.

Asus states the using high power GPUs and not using the extra cable can cause the computer to become erratic. Basically a power brown out as the GPUs increase current draw from the normal connectors that power the CPU. Thus, there are redundant power sources to balance the current draw.

I have a lot of photos of this new build and when I get a few extra minutes I will post some of them.
Your 6970's gets almost all of their power from the connectors that are plug into the video cards
The power need from the motherboard is minimal and the motherboard should be able to handle 1 or 2 video cards without any trouble
If you have 3 or more video cards then you will need the additional connector
    
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post #488 of 9900
[QUOTE=Tweeky;13919764]Your 6970's gets almost all of their power from the connectors that are plug into the video cards
The power need from the motherboard is minimal and the motherboard should be able to handle 1 or 2 video cards without any trouble

---------------------------------------
Page 2-25 of the manual:

Connect the 4-pin EZ_PLUG power plugs to ensure sufficient power supply when you install multiple Graphics cards.

Use of a PSU with a higher power output is recommended when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate. Refer to the appendix for the certified 500W powersupply or above.
-----------------------------------------
Multiple to me means more than two. Since every level of card consumes different power, following the instructions may not be a bad idea.
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post #489 of 9900
Quote:
Originally Posted by Tweeky View Post
http://valid.canardpc.com/show_oc.php?id=1873376
Quote:
Originally Posted by Kmon View Post
http://valid.canardpc.com/show_oc.php?id=1873309
Quote:
Originally Posted by Aesir View Post
http://valid.canardpc.com/show_oc.php?id=1873404
UPDATED! Thanks!
post #490 of 9900
[quote=jjceo;13919989]
Quote:
Originally Posted by Tweeky View Post
Your 6970's gets almost all of their power from the connectors that are plug into the video cards
The power need from the motherboard is minimal and the motherboard should be able to handle 1 or 2 video cards without any trouble

---------------------------------------
Page 2-25 of the manual:

Connect the 4-pin EZ_PLUG power plugs to ensure sufficient power supply when you install multiple Graphics cards.

Use of a PSU with a higher power output is recommended when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate. Refer to the appendix for the certified 500W powersupply or above.
-----------------------------------------
Multiple to me means more than two. Since every level of card consumes different power, following the instructions may not be a bad idea.
If you feel it’s best to use 4-pin EZ_PLUG you may
Edited by Tweeky - 6/18/11 at 5:29pm
    
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