Overclock.net › Forums › Graphics Cards › Graphics Cards - General › 5870 cfx to gtx 580?
New Posts  All Forums:Forum Nav:

5870 cfx to gtx 580? - Page 2

post #11 of 51
I did the same. Sold both my 5870s for 1 580. Overall it's nice to have a simple GPU solution. Although I do miss the performance when I need it like in high demanding games. Overall, you can probably sell both the 5870s and just need to add a little bit more for the 580, which should be more simple but with some performance lose.

Btw, Nvidia drivers arn't all that great either. I've gotten more trouble from Nvidia then ATI/AMD.
post #12 of 51
Quote:
Originally Posted by antuk15 View Post
Major downgrade, that's my opinion.

And there's no such thing as bad drivers, just bad installs from bad people who don't know how to upgrade drivers properly.
I LOL'ED when i read this. ATI is known for poor drivers and from someone with a long history with ATI cards and also knows how to wipe and reinstall drivers I can say that statement couldn't be more wrong.

NVIDIA is having problems with the 5xx series drivers but ATI still haven't fixed the 5xxx series drivers so I would steer clear of ATI until they get their act together.
Edited by Suprcynic - 1/3/11 at 11:15am
    
CPUMotherboardGraphicsRAM
2600k Gigabyte Z68 MSI N480GTX 16 GB Patriot 1600 
Hard DriveOptical DriveOSMonitor
1.5TB Hitachi - 120GB Crucial C300 SSD LG Win7Ultimate a couple 
KeyboardPowerCaseMouse
Saitek Eclipse II Thermaltake 750 Thermaltake A60 Armor microsoft 3000 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
2600k Gigabyte Z68 MSI N480GTX 16 GB Patriot 1600 
Hard DriveOptical DriveOSMonitor
1.5TB Hitachi - 120GB Crucial C300 SSD LG Win7Ultimate a couple 
KeyboardPowerCaseMouse
Saitek Eclipse II Thermaltake 750 Thermaltake A60 Armor microsoft 3000 
  hide details  
Reply
post #13 of 51
Thread Starter 
Quote:
Originally Posted by Suprcynic View Post
I LOL'ED when i read this. ATI is known for poor drivers and from someone with a long history with ATI cards and also knows how to wipe and reinstall drivers I can say that statement couldn't be more wrong.

NVIDIA is having problems with the 5xx series drivers but ATI still haven't fixed the 5xxx series drivers so I would steer clear of ATI until they get their act together.
ATi drivers work fine with single GPUs but when you go multi thing start to go downhill and fast
 
Benching
(17 items)
 
 
CPUMotherboardGraphicsRAM
[i7 5960X @ 4.8GHz] [Rampage V Extreme] [Titan 1400MHz (1500MHz bench)] [Various] 
Hard DriveCoolingCoolingCooling
[250GB 840EVO +2x SpinpointF3 1TB RAID0] [LD PC-V2 SS Phase Change] [XSPC X2O 750 pump/res] [Monsta 360 full copper + EK XT 360 + XT 240] 
MonitorPowerCaseAudio
[Crossover 27Q LED-P 1440p+ASUS 1200p+LG 1080p] [Corsair AX1200] [Dimastech Easy v3.0] [Sennheiser HD558s] 
CPUCPUMotherboardGraphics
FX 8320, FX 8350, Phenom II x2 555BE i7 3930K, i7 860, i7 4770K, 68x Celeron D CVF, commando, 2x RIVE, Z87X-OC Asus 4870x2, Sapphire 4870 
GraphicsGraphicsGraphicsGraphics
2x 5870, 5850, 5830, 5770 2x 3870x2, 3870 GTX Titan, GTX 480, GTX 590 GTX 285, GTX 260, 4x 9800GT, 8800GTX 
RAMHard DriveCoolingCooling
4x4GB vengeance, 2x4GB predatorX, 2x1GB OCZ DDR2 Intel X25-M 80GB LD PC-V2 SS Phase Change OCN Marksman 
CoolingCoolingOSPower
2x old tek slims (GPU) Various watercooling stuff win7, winxp AX1200 
Case
test bench / cardboard box 
  hide details  
Reply
 
Benching
(17 items)
 
 
CPUMotherboardGraphicsRAM
[i7 5960X @ 4.8GHz] [Rampage V Extreme] [Titan 1400MHz (1500MHz bench)] [Various] 
Hard DriveCoolingCoolingCooling
[250GB 840EVO +2x SpinpointF3 1TB RAID0] [LD PC-V2 SS Phase Change] [XSPC X2O 750 pump/res] [Monsta 360 full copper + EK XT 360 + XT 240] 
MonitorPowerCaseAudio
[Crossover 27Q LED-P 1440p+ASUS 1200p+LG 1080p] [Corsair AX1200] [Dimastech Easy v3.0] [Sennheiser HD558s] 
CPUCPUMotherboardGraphics
FX 8320, FX 8350, Phenom II x2 555BE i7 3930K, i7 860, i7 4770K, 68x Celeron D CVF, commando, 2x RIVE, Z87X-OC Asus 4870x2, Sapphire 4870 
GraphicsGraphicsGraphicsGraphics
2x 5870, 5850, 5830, 5770 2x 3870x2, 3870 GTX Titan, GTX 480, GTX 590 GTX 285, GTX 260, 4x 9800GT, 8800GTX 
RAMHard DriveCoolingCooling
4x4GB vengeance, 2x4GB predatorX, 2x1GB OCZ DDR2 Intel X25-M 80GB LD PC-V2 SS Phase Change OCN Marksman 
CoolingCoolingOSPower
2x old tek slims (GPU) Various watercooling stuff win7, winxp AX1200 
Case
test bench / cardboard box 
  hide details  
Reply
post #14 of 51
Major upgrade for 2 reasons.

1: It is a single GPU, can be run in windowed or full screen mode and this means you do not have any of the woes associated with CFX.

2. The stock cooler is great(I don't use it because I prefer no noise) and is capable of OCing very well(I was able to OC both of my 580s to 952Mhz on Air with ease and not going above 80c with 85% fan speed).
Mixed Bag
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 6950X 4600Mhz ASUS Rampage V Edition 10 1080 Ti FE HyperX 12-13-13 @2400Mhz 
Hard DriveCoolingOSMonitor
Samsung 850 EVO Corsair H100i GTX Windows 10 x64 ASUS ROG PG279Q Black 27" 
KeyboardPowerCaseMouse
Corsair K95 RGB EVGA SuperNOVA 1000 P2 Corsair Air 540 Corsair RGB 
Mouse Pad
Some naked Anime with a plump butt 
  hide details  
Reply
Mixed Bag
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 6950X 4600Mhz ASUS Rampage V Edition 10 1080 Ti FE HyperX 12-13-13 @2400Mhz 
Hard DriveCoolingOSMonitor
Samsung 850 EVO Corsair H100i GTX Windows 10 x64 ASUS ROG PG279Q Black 27" 
KeyboardPowerCaseMouse
Corsair K95 RGB EVGA SuperNOVA 1000 P2 Corsair Air 540 Corsair RGB 
Mouse Pad
Some naked Anime with a plump butt 
  hide details  
Reply
post #15 of 51
Thread Starter 
Quote:
Originally Posted by tconroy135 View Post
Major upgrade for 2 reasons.

1: It is a single GPU, can be run in windowed or full screen mode and this means you do not have any of the woes associated with CFX.

2. The stock cooler is great(I don't use it because I prefer no noise) and is capable of OCing very well(I was able to OC both of my 580s to 952Mhz on Air with ease and not going above 80c with 85% fan speed).
yeah both of those are valid reasons.

I'm still thinking about the performance decrease though... I'm thinking it's not something I'd notice but then I get the "what if" thought

oh and rep for opinions
 
Benching
(17 items)
 
 
CPUMotherboardGraphicsRAM
[i7 5960X @ 4.8GHz] [Rampage V Extreme] [Titan 1400MHz (1500MHz bench)] [Various] 
Hard DriveCoolingCoolingCooling
[250GB 840EVO +2x SpinpointF3 1TB RAID0] [LD PC-V2 SS Phase Change] [XSPC X2O 750 pump/res] [Monsta 360 full copper + EK XT 360 + XT 240] 
MonitorPowerCaseAudio
[Crossover 27Q LED-P 1440p+ASUS 1200p+LG 1080p] [Corsair AX1200] [Dimastech Easy v3.0] [Sennheiser HD558s] 
CPUCPUMotherboardGraphics
FX 8320, FX 8350, Phenom II x2 555BE i7 3930K, i7 860, i7 4770K, 68x Celeron D CVF, commando, 2x RIVE, Z87X-OC Asus 4870x2, Sapphire 4870 
GraphicsGraphicsGraphicsGraphics
2x 5870, 5850, 5830, 5770 2x 3870x2, 3870 GTX Titan, GTX 480, GTX 590 GTX 285, GTX 260, 4x 9800GT, 8800GTX 
RAMHard DriveCoolingCooling
4x4GB vengeance, 2x4GB predatorX, 2x1GB OCZ DDR2 Intel X25-M 80GB LD PC-V2 SS Phase Change OCN Marksman 
CoolingCoolingOSPower
2x old tek slims (GPU) Various watercooling stuff win7, winxp AX1200 
Case
test bench / cardboard box 
  hide details  
Reply
 
Benching
(17 items)
 
 
CPUMotherboardGraphicsRAM
[i7 5960X @ 4.8GHz] [Rampage V Extreme] [Titan 1400MHz (1500MHz bench)] [Various] 
Hard DriveCoolingCoolingCooling
[250GB 840EVO +2x SpinpointF3 1TB RAID0] [LD PC-V2 SS Phase Change] [XSPC X2O 750 pump/res] [Monsta 360 full copper + EK XT 360 + XT 240] 
MonitorPowerCaseAudio
[Crossover 27Q LED-P 1440p+ASUS 1200p+LG 1080p] [Corsair AX1200] [Dimastech Easy v3.0] [Sennheiser HD558s] 
CPUCPUMotherboardGraphics
FX 8320, FX 8350, Phenom II x2 555BE i7 3930K, i7 860, i7 4770K, 68x Celeron D CVF, commando, 2x RIVE, Z87X-OC Asus 4870x2, Sapphire 4870 
GraphicsGraphicsGraphicsGraphics
2x 5870, 5850, 5830, 5770 2x 3870x2, 3870 GTX Titan, GTX 480, GTX 590 GTX 285, GTX 260, 4x 9800GT, 8800GTX 
RAMHard DriveCoolingCooling
4x4GB vengeance, 2x4GB predatorX, 2x1GB OCZ DDR2 Intel X25-M 80GB LD PC-V2 SS Phase Change OCN Marksman 
CoolingCoolingOSPower
2x old tek slims (GPU) Various watercooling stuff win7, winxp AX1200 
Case
test bench / cardboard box 
  hide details  
Reply
post #16 of 51
Quote:
Originally Posted by antuk15 View Post
Major downgrade, that's my opinion.

And there's no such thing as bad drivers, just bad installs from bad people who don't know how to upgrade drivers properly.
Downgrade? I disagree. I went from paired 5870's to paired 6870's to a single GTX580 and frankly, I am quite a bit happier.

My maximum FPS obviously has taken a hit but in some titles my minimum FPS has increased.

More importantly, no lag or micro-stutter. It is very obvious once you go back to a fast single card.

Nvidia is no different; I had paired GTX470's that gave me even greater issues.

I'm frankly done with multi-gpu's for the near future.
Murder Box II
(18 items)
 
Home PC
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel 6800K Asus X99-A II Zotac 1080Ti AMP Extreme Edition G. Skill Trident Z - 32GB/ 3200Hz/CL14/Quad  
Hard DriveCoolingOSMonitor
Sandisk Extreme Pro 480GB Corsair H100i V2 - w/ML120 Pro Fans Windows 10 Home 64 Bit Acer Z35P 1440P G-Sync 
KeyboardPowerCaseMouse
Steelseries Merc  EVGA Supernova G2 1000W Corsair 450D Mionix Naos 8200 
Mouse PadAudioAudioOther
Inwin Batmat Aluminum Sound Blaster Z Logitech Z906 - 5.1 Maxnomic Commander S-III Gaming Chair 
CPUMotherboardGraphicsRAM
Intel G3440 Asus B85M-E/CSM EVGA GTX 950 Patriot Viper 3 - 2x8GB 1600hz 
Hard DriveOptical DriveCoolingOS
Samsung EVO 850 - 500GB + 4TB/3TB x 2/2TB WD Green LG CH12LS28 Bluray Scythe Big Shuriken 2 w/Corsair SP120 Fan Windows 10 64 Bit 
MonitorKeyboardPowerCase
Samsung 75" TV.... GooBang Doo MX3 Corsair CX430 V2 NMEDIAPC HTPC 6000B w/ Pro LCD Module 
Mouse
GooBang Doo MX3 
  hide details  
Reply
Murder Box II
(18 items)
 
Home PC
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel 6800K Asus X99-A II Zotac 1080Ti AMP Extreme Edition G. Skill Trident Z - 32GB/ 3200Hz/CL14/Quad  
Hard DriveCoolingOSMonitor
Sandisk Extreme Pro 480GB Corsair H100i V2 - w/ML120 Pro Fans Windows 10 Home 64 Bit Acer Z35P 1440P G-Sync 
KeyboardPowerCaseMouse
Steelseries Merc  EVGA Supernova G2 1000W Corsair 450D Mionix Naos 8200 
Mouse PadAudioAudioOther
Inwin Batmat Aluminum Sound Blaster Z Logitech Z906 - 5.1 Maxnomic Commander S-III Gaming Chair 
CPUMotherboardGraphicsRAM
Intel G3440 Asus B85M-E/CSM EVGA GTX 950 Patriot Viper 3 - 2x8GB 1600hz 
Hard DriveOptical DriveCoolingOS
Samsung EVO 850 - 500GB + 4TB/3TB x 2/2TB WD Green LG CH12LS28 Bluray Scythe Big Shuriken 2 w/Corsair SP120 Fan Windows 10 64 Bit 
MonitorKeyboardPowerCase
Samsung 75" TV.... GooBang Doo MX3 Corsair CX430 V2 NMEDIAPC HTPC 6000B w/ Pro LCD Module 
Mouse
GooBang Doo MX3 
  hide details  
Reply
post #17 of 51
Thread Starter 
Quote:
Originally Posted by Robilar View Post
snip
Thanks for the input

yeah I was thinking of getting maybe a 6950 or a 6870 cfx setup since the 5000 series has had so much problems with cfx. But when I thought about it I came to the conclusion that I'd just face the same issues.

And this is why I want to change to a single card even though it may be less beefy, less issues = better gaming experience.
 
Benching
(17 items)
 
 
CPUMotherboardGraphicsRAM
[i7 5960X @ 4.8GHz] [Rampage V Extreme] [Titan 1400MHz (1500MHz bench)] [Various] 
Hard DriveCoolingCoolingCooling
[250GB 840EVO +2x SpinpointF3 1TB RAID0] [LD PC-V2 SS Phase Change] [XSPC X2O 750 pump/res] [Monsta 360 full copper + EK XT 360 + XT 240] 
MonitorPowerCaseAudio
[Crossover 27Q LED-P 1440p+ASUS 1200p+LG 1080p] [Corsair AX1200] [Dimastech Easy v3.0] [Sennheiser HD558s] 
CPUCPUMotherboardGraphics
FX 8320, FX 8350, Phenom II x2 555BE i7 3930K, i7 860, i7 4770K, 68x Celeron D CVF, commando, 2x RIVE, Z87X-OC Asus 4870x2, Sapphire 4870 
GraphicsGraphicsGraphicsGraphics
2x 5870, 5850, 5830, 5770 2x 3870x2, 3870 GTX Titan, GTX 480, GTX 590 GTX 285, GTX 260, 4x 9800GT, 8800GTX 
RAMHard DriveCoolingCooling
4x4GB vengeance, 2x4GB predatorX, 2x1GB OCZ DDR2 Intel X25-M 80GB LD PC-V2 SS Phase Change OCN Marksman 
CoolingCoolingOSPower
2x old tek slims (GPU) Various watercooling stuff win7, winxp AX1200 
Case
test bench / cardboard box 
  hide details  
Reply
 
Benching
(17 items)
 
 
CPUMotherboardGraphicsRAM
[i7 5960X @ 4.8GHz] [Rampage V Extreme] [Titan 1400MHz (1500MHz bench)] [Various] 
Hard DriveCoolingCoolingCooling
[250GB 840EVO +2x SpinpointF3 1TB RAID0] [LD PC-V2 SS Phase Change] [XSPC X2O 750 pump/res] [Monsta 360 full copper + EK XT 360 + XT 240] 
MonitorPowerCaseAudio
[Crossover 27Q LED-P 1440p+ASUS 1200p+LG 1080p] [Corsair AX1200] [Dimastech Easy v3.0] [Sennheiser HD558s] 
CPUCPUMotherboardGraphics
FX 8320, FX 8350, Phenom II x2 555BE i7 3930K, i7 860, i7 4770K, 68x Celeron D CVF, commando, 2x RIVE, Z87X-OC Asus 4870x2, Sapphire 4870 
GraphicsGraphicsGraphicsGraphics
2x 5870, 5850, 5830, 5770 2x 3870x2, 3870 GTX Titan, GTX 480, GTX 590 GTX 285, GTX 260, 4x 9800GT, 8800GTX 
RAMHard DriveCoolingCooling
4x4GB vengeance, 2x4GB predatorX, 2x1GB OCZ DDR2 Intel X25-M 80GB LD PC-V2 SS Phase Change OCN Marksman 
CoolingCoolingOSPower
2x old tek slims (GPU) Various watercooling stuff win7, winxp AX1200 
Case
test bench / cardboard box 
  hide details  
Reply
post #18 of 51
Quote:
Originally Posted by Robilar View Post
Downgrade? I disagree. I went from paired 5870's to paired 6870's to a single GTX580 and frankly, I am quite a bit happier.

My maximum FPS obviously has taken a hit but in some titles my minimum FPS has increased.

More importantly, no lag or micro-stutter. It is very obvious once you go back to a fast single card.

Nvidia is no different; I had paired GTX470's that gave me even greater issues.

I'm frankly done with multi-gpu's for the near future.
GTX580 is not that great. My HD 6970s beats it in min fps. Also the reason GTX580 can hold its own against dual cards it because only Crysis and Metro need 2 GPUs to get good fps so getting 60fps with GTX580 and 90fps with 2 xHD 5870 is no difference to the eye. GTX580 is too much for 500$. Get a HD 6950 or a GTX 570 is you dont want dual GPUs. GTX580 will give you 10-15% at best over these GPUs for a lot more $.
Ishimura
(21 items)
 
Silent Knight
(13 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AMD Radeon R9 16GB DDR3-2400MHz  
Hard DriveHard DriveCoolingCooling
SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
CoolingOSMonitorKeyboard
4x GentleTyphoon AP-15 Windows 10 Pro 64-Bit Philips Brilliance BDM4065UC 4K Razer BlackWidow Chroma  
PowerCaseMouseMouse Pad
eVGA SuperNOVA 750 G3 Define Nano S Logitech G502 Proteus Core PECHAM Gaming Mouse Pad XX-Large 
AudioAudioAudioAudio
Audioengine D1 DAC Mackie CR Series CR3 Audio-Technica ATH-M50 Sennheiser HD 598 
Audio
Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
CoolingCoolingOSPower
EK-FC7970 XSPC RS360 Windows 10 Pro 64-Bit Corsair TX750 
Case
NZXT Switch 810  
  hide details  
Reply
Ishimura
(21 items)
 
Silent Knight
(13 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX eVGA GTX 1080 Ti Hybrid AMD Radeon R9 16GB DDR3-2400MHz  
Hard DriveHard DriveCoolingCooling
SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX eVGA Hybrid Water Cooler  
CoolingOSMonitorKeyboard
4x GentleTyphoon AP-15 Windows 10 Pro 64-Bit Philips Brilliance BDM4065UC 4K Razer BlackWidow Chroma  
PowerCaseMouseMouse Pad
eVGA SuperNOVA 750 G3 Define Nano S Logitech G502 Proteus Core PECHAM Gaming Mouse Pad XX-Large 
AudioAudioAudioAudio
Audioengine D1 DAC Mackie CR Series CR3 Audio-Technica ATH-M50 Sennheiser HD 598 
Audio
Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
CoolingCoolingOSPower
EK-FC7970 XSPC RS360 Windows 10 Pro 64-Bit Corsair TX750 
Case
NZXT Switch 810  
  hide details  
Reply
post #19 of 51
Quote:
Originally Posted by antuk15 View Post
With the reviews I've seen there's nothing 'slight' about it....

5870 CF >>> 5970 >>> GTX580
5970 isn't that much faster than a GTX 580 so going to a GTX 580 isn't a "Major downgrade."

Look here, and notice that the GTX 580 beats the 5970 in a few games while being only a little slower in others. This by no means justifies the saying "Major downgrade."

With that said, you will enjoy a higher minimum frame rate and better driver support that comes with single-GPU cards.
Po' Pimpin'
(11 items)
 
  
CPUMotherboardRAMHard Drive
i5 2500k @ stock Biostar TZ68K+ [A3] 4GB  Sandforce 1222 64GB SSD 
Optical DriveCoolingOSMonitor
LG 22x DVD-+RW  Stock Windows 7 x64 Acer S211HL 1080p 
PowerCaseMouse
600w Diablotek Linkworld Electronic Inland 
  hide details  
Reply
Po' Pimpin'
(11 items)
 
  
CPUMotherboardRAMHard Drive
i5 2500k @ stock Biostar TZ68K+ [A3] 4GB  Sandforce 1222 64GB SSD 
Optical DriveCoolingOSMonitor
LG 22x DVD-+RW  Stock Windows 7 x64 Acer S211HL 1080p 
PowerCaseMouse
600w Diablotek Linkworld Electronic Inland 
  hide details  
Reply
post #20 of 51
I have both a 5970 and a GTX570 and I can say the 570 comes close to a stock 5970 in most things.

I put the 5970 in my kids machine, that's how much I love this 570 card
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Xeon E5-1680 V2  R4BE  TITAN X (Pascal)   2666 Dominator Platinum CL10 
Hard DriveCoolingCoolingOS
750 NVMe 1.2TB EK HF/rx360/rx120 EK FC/GTs/mcp655 Windows 10 Pro  
MonitorPowerCaseAudio
BL3200PT 1600 T2 800d Pro Audio 2.1 + DragonFly Red 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Graphics Cards - General
Overclock.net › Forums › Graphics Cards › Graphics Cards - General › 5870 cfx to gtx 580?