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buy second card or ?

post #1 of 10
Thread Starter 
Hello guys,

currently i have single AMD Radeon HD 7970 OC 3 GB GDDR5 card.

If i get one more (used) and do cross-fire how much % (performance) i am getting? (not even sure if this is correct way of asking this - i never did crossfire before)

or.. should i sell mine and upgrade to R8 or R9 card?

Thanks!
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D I S
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post #2 of 10
I think generally speaking you're looking at aboouuttt an 80% increase in performance as a general rule as long as the games you play are optimised for crossfire.
First though, what PSU are you running at the moment?
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64GB Crucial M4 x2 RAID0 500GB Seagate Barracuda 2TB Samsung Spinpoint EK Supremacy Plexi CSQ CPU Block 
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post #3 of 10
Thread Starter 
I have a Corsair AX1200 PSU.

It can handle crossfire easily, i am sure.

I know its a overkill for the current setup, but, i got it very, very, very cheap.
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D I S
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2 x Intel 520 180GB RAID0 1 TB WD 1 TB WD Corsair H100i 
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post #4 of 10
Ah cool, you're fine then.
Well it's up to you really, you can probably get a used 7970 pretty cheap these days so it might be worth it for you.
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64GB Crucial M4 x2 RAID0 500GB Seagate Barracuda 2TB Samsung Spinpoint EK Supremacy Plexi CSQ CPU Block 
CoolingCoolingCoolingCooling
EK FC-670GTX Plexi CSQ GPU Block x2 EK XT240 EK X3 250 Res Laing D5 Vario 
CoolingOSMonitorKeyboard
EK D5 Pump Top Plexi Windows 7 Ultimate 64bit 24" BenQ XL2420T CM Quickfire TK MX Browns 
PowerCaseMouseMouse Pad
Seasonic G Series 600W CM storm trooper Saitek R.A.T 5 Razer Goliathus Control Edition 
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Beyerdynamic DT990 Pro Schiit Modi/Magni Razer Naga Molten Edition 
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STORMTIDE
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Intel i5 3570k 4.5GHz @1.272v MSI Z77A-GD55 EVGA GTX780Ti ACX 8GB Corsair Vengance LP 
Hard DriveHard DriveHard DriveCooling
64GB Crucial M4 x2 RAID0 500GB Seagate Barracuda 2TB Samsung Spinpoint EK Supremacy Plexi CSQ CPU Block 
CoolingCoolingCoolingCooling
EK FC-670GTX Plexi CSQ GPU Block x2 EK XT240 EK X3 250 Res Laing D5 Vario 
CoolingOSMonitorKeyboard
EK D5 Pump Top Plexi Windows 7 Ultimate 64bit 24" BenQ XL2420T CM Quickfire TK MX Browns 
PowerCaseMouseMouse Pad
Seasonic G Series 600W CM storm trooper Saitek R.A.T 5 Razer Goliathus Control Edition 
AudioAudioOther
Beyerdynamic DT990 Pro Schiit Modi/Magni Razer Naga Molten Edition 
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post #5 of 10
Thread Starter 
smile.gif Thanks for your time.

Ill do some more re-search, reading, and decide.

thanks again!
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D I S
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2 x Intel 520 180GB RAID0 1 TB WD 1 TB WD Corsair H100i 
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post #6 of 10
No problem at all smile.gif
I'm sure there's enough information out there for you to make a well thought out decision!
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64GB Crucial M4 x2 RAID0 500GB Seagate Barracuda 2TB Samsung Spinpoint EK Supremacy Plexi CSQ CPU Block 
CoolingCoolingCoolingCooling
EK FC-670GTX Plexi CSQ GPU Block x2 EK XT240 EK X3 250 Res Laing D5 Vario 
CoolingOSMonitorKeyboard
EK D5 Pump Top Plexi Windows 7 Ultimate 64bit 24" BenQ XL2420T CM Quickfire TK MX Browns 
PowerCaseMouseMouse Pad
Seasonic G Series 600W CM storm trooper Saitek R.A.T 5 Razer Goliathus Control Edition 
AudioAudioOther
Beyerdynamic DT990 Pro Schiit Modi/Magni Razer Naga Molten Edition 
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i5 3317U 640M 4GB DDR3 128gb crucial m4 
OSMouse
Windows 8 Pro 64bit Razer Naga Molten 
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STORMTIDE
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CPUMotherboardGraphicsRAM
Intel i5 3570k 4.5GHz @1.272v MSI Z77A-GD55 EVGA GTX780Ti ACX 8GB Corsair Vengance LP 
Hard DriveHard DriveHard DriveCooling
64GB Crucial M4 x2 RAID0 500GB Seagate Barracuda 2TB Samsung Spinpoint EK Supremacy Plexi CSQ CPU Block 
CoolingCoolingCoolingCooling
EK FC-670GTX Plexi CSQ GPU Block x2 EK XT240 EK X3 250 Res Laing D5 Vario 
CoolingOSMonitorKeyboard
EK D5 Pump Top Plexi Windows 7 Ultimate 64bit 24" BenQ XL2420T CM Quickfire TK MX Browns 
PowerCaseMouseMouse Pad
Seasonic G Series 600W CM storm trooper Saitek R.A.T 5 Razer Goliathus Control Edition 
AudioAudioOther
Beyerdynamic DT990 Pro Schiit Modi/Magni Razer Naga Molten Edition 
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i5 3317U 640M 4GB DDR3 128gb crucial m4 
OSMouse
Windows 8 Pro 64bit Razer Naga Molten 
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post #7 of 10
Thread Starter 
What would be the best place to look for the exact same card?

I bought this one from newegg in 2012, in history i found this:
SAPPHIRE Radeon HD 7970 OC 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card (11197-01-40G)

I am located in Canada.

Also, what would be the fair price for used card (like this) at this time?

Thanks!
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D I S
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i7 3930K Asus Rampage IV Extreme MSI GTX 780 TI GAMING 3G Corsair 16GB 7CL 
Hard DriveHard DriveOptical DriveCooling
2 x Intel 520 180GB RAID0 1 TB WD 1 TB WD Corsair H100i 
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post #8 of 10
Try Ebay or look on marketplace on here, Hardocp, Anadtech etc
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WD 320 GB OCZ vertex 3 64GB Samsung 840 Pro 128GB Seagate 250 GB  
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RAMRAMRAMHard Drive
Corsair  Corsair  g.skill sniper gaming series 16gb 2400mhz ddr3 WD 1 TB  
Hard DriveHard DriveHard DriveHard Drive
WD 320 GB OCZ vertex 3 64GB Samsung 840 Pro 128GB Seagate 250 GB  
Hard DriveOptical DriveCoolingOS
Crucial MX300 525 GB Samsung SH-S223L Cooler Master Glacer 240l Windows 8.1 Pro N 64 bit 
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Windows 10 Pro 64 bit AOC 2462w Lenovo L2261wA Razer Lycosa 
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post #9 of 10
Thread Starter 
Thank you for responding!

What would be the fair price, do you have any idea?

Thanks a lot.
D I S
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i7 3930K Asus Rampage IV Extreme MSI GTX 780 TI GAMING 3G Corsair 16GB 7CL 
Hard DriveHard DriveOptical DriveCooling
2 x Intel 520 180GB RAID0 1 TB WD 1 TB WD Corsair H100i 
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Windows 8 64bit Acer G24 Swich 810 Cyborg M.M.O. 7 
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D I S
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CPUMotherboardGraphicsRAM
i7 3930K Asus Rampage IV Extreme MSI GTX 780 TI GAMING 3G Corsair 16GB 7CL 
Hard DriveHard DriveOptical DriveCooling
2 x Intel 520 180GB RAID0 1 TB WD 1 TB WD Corsair H100i 
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Windows 8 64bit Acer G24 Swich 810 Cyborg M.M.O. 7 
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post #10 of 10
$300 to $350 ish would be my guess
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AMD FX 8350 SABERTOOTH 990FX R2.0 MSI R9 290X Lightning MSI R9 290X Lightning 
RAMRAMRAMHard Drive
Corsair  Corsair  g.skill sniper gaming series 16gb 2400mhz ddr3 WD 1 TB  
Hard DriveHard DriveHard DriveHard Drive
WD 320 GB OCZ vertex 3 64GB Samsung 840 Pro 128GB Seagate 250 GB  
Hard DriveOptical DriveCoolingOS
Crucial MX300 525 GB Samsung SH-S223L Cooler Master Glacer 240l Windows 8.1 Pro N 64 bit 
OSMonitorMonitorKeyboard
Windows 10 Pro 64 bit AOC 2462w Lenovo L2261wA Razer Lycosa 
PowerCaseMouseAudio
Antec HCG 750 Rosewill Future corsair vengeance m65 Turtle Beach Montego DDL 
Other
Altec Lansing ADA 995 
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Reply
FX Klasse
(25 items)
 
  
CPUMotherboardGraphicsGraphics
AMD FX 8350 SABERTOOTH 990FX R2.0 MSI R9 290X Lightning MSI R9 290X Lightning 
RAMRAMRAMHard Drive
Corsair  Corsair  g.skill sniper gaming series 16gb 2400mhz ddr3 WD 1 TB  
Hard DriveHard DriveHard DriveHard Drive
WD 320 GB OCZ vertex 3 64GB Samsung 840 Pro 128GB Seagate 250 GB  
Hard DriveOptical DriveCoolingOS
Crucial MX300 525 GB Samsung SH-S223L Cooler Master Glacer 240l Windows 8.1 Pro N 64 bit 
OSMonitorMonitorKeyboard
Windows 10 Pro 64 bit AOC 2462w Lenovo L2261wA Razer Lycosa 
PowerCaseMouseAudio
Antec HCG 750 Rosewill Future corsair vengeance m65 Turtle Beach Montego DDL 
Other
Altec Lansing ADA 995 
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Reply
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