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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 282

post #2811 of 38701
Quote:
Originally Posted by Hexa View Post

I'm sure my 750 watt PSU could run 1 7970 but could it run 2? It's not a pos one either it's a Corsair Prof series.

Corsair PSUs are brilliant and pretty conservatively rated. You can easily run two 7970s on a 750w Corsair PSU

Those "recommended" ratings take into account some people buy pretty bad PSUs.
post #2812 of 38701
Well I have done a lot of testing and with both of my msi 7970's @ 1240/1700, my peak draw was 696W. That's with my i5 750 @ 4.2 and the rest of my sig rig below. Overall these cards are super efficient for the performance given!
post #2813 of 38701
i have a problem with asus gpu tweak: i can set the gpu clock up to 1820mhz but i cant tweak the voltage, there is some hidden options to allow the voltage tweak? (i tried to go in advanced mode, but i cant see the voltage menu)
Edited by RickardKarstark - 1/31/12 at 8:34am
post #2814 of 38701
Quote:
Originally Posted by tsm106 View Post

How are your cards plugged into your psu? HX1000 is two 500 watt psus so you have to make sure they are both not on the same half.

How would I be able to tell? I have the the 2 non modular ones plugged to the top card and then the blue cables modular ones plugged to the bottom one. The card that fails is the one with the dedicated cables.

I'm going to try overclocking it without crossfire to see if it's stable then. If it is, it's a crossfire issue
     
CPUMotherboardGraphicsGraphics
Core i7 2600K Asus Maximus IV Extreme AMD Radeon 7970 AMD Radeon 7970 
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16gb Gskill 1866mhz Vertex 3 240gb. 1TB Seagate 7200. 160gb WD 7200. LG 24x DVD XSPC Raystorm, MCP655, Frozen-Q Tvirus, RS360mm... 
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CPUMotherboardGraphicsGraphics
Core i7 2600K Asus Maximus IV Extreme AMD Radeon 7970 AMD Radeon 7970 
RAMHard DriveOptical DriveCooling
16gb Gskill 1866mhz Vertex 3 240gb. 1TB Seagate 7200. 160gb WD 7200. LG 24x DVD XSPC Raystorm, MCP655, Frozen-Q Tvirus, RS360mm... 
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Windows 7 24'' 1080p by Asus Razer Blackwidow Ultimate Corsair 1000watt HX Modular 
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post #2815 of 38701
Trying swapping cables( one modular, one non-modular for each card).
    
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post #2816 of 38701
Quote:
Originally Posted by Balsagna View Post

How would I be able to tell? I have the the 2 non modular ones plugged to the top card and then the blue cables modular ones plugged to the bottom one. The card that fails is the one with the dedicated cables.
I'm going to try overclocking it without crossfire to see if it's stable then. If it is, it's a crossfire issue

Here's the diagram of the rails. Which rail do you have the blue cables plugged into V1 or V2? You should be using V1.

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post #2817 of 38701
Quote:
Originally Posted by tsm106 View Post


Here's the diagram of the rails. Which rail do you have the blue cables plugged into V1 or V2? You should be using V1.
320


How awesome. This club is great! cheers.gif

+ Rep

 

CM ATCS 840
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Intel i5 2500K @ 4.5GHz Asus P8P67 Sapphire HD 7970  G-Skill 4x2GB 12800 DDR3 1600Mhz 
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5 x Seagate Barracuda Sata III 2TB 2 x Samsung 1TB 1 x Seagate 1TB Samsung Slim SeS064 External USB DVD Writer 
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CM ATCS 840
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CPUMotherboardGraphicsRAM
Intel i5 2500K @ 4.5GHz Asus P8P67 Sapphire HD 7970  G-Skill 4x2GB 12800 DDR3 1600Mhz 
Hard DriveHard DriveHard DriveOptical Drive
5 x Seagate Barracuda Sata III 2TB 2 x Samsung 1TB 1 x Seagate 1TB Samsung Slim SeS064 External USB DVD Writer 
CoolingCoolingCoolingCooling
Corsair H100 Liquid Cooler 1 x BitFenix Spectre Pro 230mm 5 x BitFenix Spectre Pro 120mm 2 x Lamptron FC5v2 LCD 4x30W Fan Controller 
OSMonitorMonitorKeyboard
Windows 7 Home Premium 64-bit Benq 24" G2420HD LCD DVI Benq 20" FP202W LCD DVI Logitech K620 Wireless 
PowerCaseMouseAudio
Antec Truepower New 650W TP-650 Coolermaster ATCS 840 Black Aluminium Full Tower Logitech Wireless Auzentech X-Meridian 2G 
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post #2818 of 38701
I'm thinking v2 but I'm not 100% sure. I will check when I get home.

I got the cards stable at 1125/1575. I just had to pump a small amount of voltage to the dud card. I wonder how much I need to pump to get to my 1200/1600

That said at the clocks I mentioned I got 91fps in heaven and 15.5k in 3dmark11.

That performance fine?
     
CPUMotherboardGraphicsGraphics
Core i7 2600K Asus Maximus IV Extreme AMD Radeon 7970 AMD Radeon 7970 
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16gb Gskill 1866mhz Vertex 3 240gb. 1TB Seagate 7200. 160gb WD 7200. LG 24x DVD XSPC Raystorm, MCP655, Frozen-Q Tvirus, RS360mm... 
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CPUMotherboardGraphicsGraphics
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16gb Gskill 1866mhz Vertex 3 240gb. 1TB Seagate 7200. 160gb WD 7200. LG 24x DVD XSPC Raystorm, MCP655, Frozen-Q Tvirus, RS360mm... 
OSMonitorKeyboardPower
Windows 7 24'' 1080p by Asus Razer Blackwidow Ultimate Corsair 1000watt HX Modular 
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post #2819 of 38701

So I'm almost ready to pull the trigger:

 

Option 1. Sapphire Ref card $719

Option 2. XFX Black for $700 (bargain here)

Option 3. Gigabyte O/C $769

 

Really appreciate any last minute advice!

 

Thank you


Edited by chillgreg - 1/31/12 at 11:37am
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CPUMotherboardGraphicsRAM
Intel i5 2500K @ 4.5GHz Asus P8P67 Sapphire HD 7970  G-Skill 4x2GB 12800 DDR3 1600Mhz 
Hard DriveHard DriveHard DriveOptical Drive
5 x Seagate Barracuda Sata III 2TB 2 x Samsung 1TB 1 x Seagate 1TB Samsung Slim SeS064 External USB DVD Writer 
CoolingCoolingCoolingCooling
Corsair H100 Liquid Cooler 1 x BitFenix Spectre Pro 230mm 5 x BitFenix Spectre Pro 120mm 2 x Lamptron FC5v2 LCD 4x30W Fan Controller 
OSMonitorMonitorKeyboard
Windows 7 Home Premium 64-bit Benq 24" G2420HD LCD DVI Benq 20" FP202W LCD DVI Logitech K620 Wireless 
PowerCaseMouseAudio
Antec Truepower New 650W TP-650 Coolermaster ATCS 840 Black Aluminium Full Tower Logitech Wireless Auzentech X-Meridian 2G 
AudioOther
Logitech Z5500 Brain - on backorder 
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CM ATCS 840
(23 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 2500K @ 4.5GHz Asus P8P67 Sapphire HD 7970  G-Skill 4x2GB 12800 DDR3 1600Mhz 
Hard DriveHard DriveHard DriveOptical Drive
5 x Seagate Barracuda Sata III 2TB 2 x Samsung 1TB 1 x Seagate 1TB Samsung Slim SeS064 External USB DVD Writer 
CoolingCoolingCoolingCooling
Corsair H100 Liquid Cooler 1 x BitFenix Spectre Pro 230mm 5 x BitFenix Spectre Pro 120mm 2 x Lamptron FC5v2 LCD 4x30W Fan Controller 
OSMonitorMonitorKeyboard
Windows 7 Home Premium 64-bit Benq 24" G2420HD LCD DVI Benq 20" FP202W LCD DVI Logitech K620 Wireless 
PowerCaseMouseAudio
Antec Truepower New 650W TP-650 Coolermaster ATCS 840 Black Aluminium Full Tower Logitech Wireless Auzentech X-Meridian 2G 
AudioOther
Logitech Z5500 Brain - on backorder 
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post #2820 of 38701
Hiya all .Pridefull owner of an 3Dclub ref 7970.
First of all i would like to ask how to update the BIOS ,i just run the .exe file ?
And second of all ,i m experiencing a couple of probs...Even though my card its pretty cool and running smooth,i have 3 crashes( in game freezes to be exact ) ,at lotro online speciffically.
Drivers problem or faulty Gpu ?
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