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290x crossfire on AX860i?

post #1 of 15
Thread Starter 
I'm probably getting ahead of myself, I don't even have my first 290x yet, but it'll be here some day soon. But I know some day I won't be quite happy with that power and I'll want more, at which point instead of buying a more modern card and getting a 50% increase in power, I'll get another 290x and get a 80 or 90% increase or whatever. I have a corsair AX860i which is a very high quality power supply, I just want to know if it'll make the power supply wear out unnecessarily early. I'm sure it'll be enough power, but the last power supply I had that I was running near capacity burned out after a year or two at that power level. Then again, it was a cheaper antec power supply and capacitor aging means you should probably replace it at least every 4 years anyway.
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post #2 of 15

I don't know Crossfire, but I don't think that you get a 80-90% increase. I'm somewhat certain that it's much less than that.

 

Regardless, you'd have plenty of power. If you have your 3570K overclocked as high as it can go with good air cooling but keep the 290X's at stock, then your power consumption while gaming would never exceed about 750W which is extremely easy for the AX860i.

 

With a PSU like yours, you never have to worry about wearing it out or capacitor aging or any of that other stuff.

It's a computer!
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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 
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It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
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X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 15
Capacitor aging is a myth these days and its not something you need to worry about unless the PSU is already 10 years old or junk which the AX860i is not.
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Seravee
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post #4 of 15
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

I don't know Crossfire, but I don't think that you get a 80-90% increase. I'm somewhat certain that it's much less than that.

Regardless, you'd have plenty of power. If you have your 3570K overclocked as high as it can go with good air cooling but keep the 290X's at stock, then your power consumption while gaming would never exceed about 750W which is extremely easy for the AX860i.

With a PSU like yours, you never have to worry about wearing it out or capacitor aging or any of that other stuff.

I just looked around some scaling benchmarks and in most games it nearly doubles the FPS. Minus a few of course. 4 years ago I wouldn't expect even 75% scaling with SLI, but now crossfire is a bit better and quite efficient. Thanks for the other info though, now I know I can get a lot more performance if I want to try crossfire some day and not have to worry about the power supply.
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Intel i5 3570k 4.6GHz 1.37v ASRock Z77 Extreme6 NITRO R9 Fury 16GB 1866 Kingston HyperX DDR3 
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2TB Seagate Hard drive 640GB Hitachi Hard Drive 480GB Crucial M500 SSD Hyper 212 EVO 
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Name
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CPUMotherboardGraphicsRAM
Intel i5 3570k 4.6GHz 1.37v ASRock Z77 Extreme6 NITRO R9 Fury 16GB 1866 Kingston HyperX DDR3 
Hard DriveHard DriveHard DriveCooling
2TB Seagate Hard drive 640GB Hitachi Hard Drive 480GB Crucial M500 SSD Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 7 Ultimate 64-bit/Zorin OS 49" 4K 240Hz Sony TV Corsair K70 RGB Rapidfire Corsair AX860i 
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Haf X Logitech G400s 
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post #5 of 15
Quote:
Originally Posted by TheHorse View Post


I just looked around some scaling benchmarks and in most games it nearly doubles the FPS. Minus a few of course. 4 years ago I wouldn't expect even 75% scaling with SLI, but now crossfire is a bit better and quite efficient. Thanks for the other info though, now I know I can get a lot more performance if I want to try crossfire some day and not have to worry about the power supply.

 

Wow. That's very good news! I'm glad you looked into that.

 

Do you think you'll ever overclock the cards though?

 

Oh, and is your 3570K overclocked? If not, then will it be?

It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #6 of 15
a stock clocked r9 290x shoudl us earound 290-280w,two of them 580w plus 100w, you would need 680w at least on 12v
post #7 of 15
Thread Starter 
Quote:
Originally Posted by TwoCables View Post

Wow. That's very good news! I'm glad you looked into that.

Do you think you'll ever overclock the cards though? Probably not much if ever.

Oh, and is your 3570K overclocked? If not, then will it be? No and no.
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Intel i5 3570k 4.6GHz 1.37v ASRock Z77 Extreme6 NITRO R9 Fury 16GB 1866 Kingston HyperX DDR3 
Hard DriveHard DriveHard DriveCooling
2TB Seagate Hard drive 640GB Hitachi Hard Drive 480GB Crucial M500 SSD Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 7 Ultimate 64-bit/Zorin OS 49" 4K 240Hz Sony TV Corsair K70 RGB Rapidfire Corsair AX860i 
CaseMouse
Haf X Logitech G400s 
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Name
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570k 4.6GHz 1.37v ASRock Z77 Extreme6 NITRO R9 Fury 16GB 1866 Kingston HyperX DDR3 
Hard DriveHard DriveHard DriveCooling
2TB Seagate Hard drive 640GB Hitachi Hard Drive 480GB Crucial M500 SSD Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 7 Ultimate 64-bit/Zorin OS 49" 4K 240Hz Sony TV Corsair K70 RGB Rapidfire Corsair AX860i 
CaseMouse
Haf X Logitech G400s 
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post #8 of 15

Then your power consumption while gaming will be lower than I estimated before; instead of never exceeding about 750W, I'll say about 650-675W to maybe as high as 700W.

It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #9 of 15
Thread Starter 
Nice to have a low wattage CPU. Don't think I'll be upgrading it anytime soon either, CPUs don't jump in performance each generation like they used to.
Name
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570k 4.6GHz 1.37v ASRock Z77 Extreme6 NITRO R9 Fury 16GB 1866 Kingston HyperX DDR3 
Hard DriveHard DriveHard DriveCooling
2TB Seagate Hard drive 640GB Hitachi Hard Drive 480GB Crucial M500 SSD Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 7 Ultimate 64-bit/Zorin OS 49" 4K 240Hz Sony TV Corsair K70 RGB Rapidfire Corsair AX860i 
CaseMouse
Haf X Logitech G400s 
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Name
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i5 3570k 4.6GHz 1.37v ASRock Z77 Extreme6 NITRO R9 Fury 16GB 1866 Kingston HyperX DDR3 
Hard DriveHard DriveHard DriveCooling
2TB Seagate Hard drive 640GB Hitachi Hard Drive 480GB Crucial M500 SSD Hyper 212 EVO 
OSMonitorKeyboardPower
Windows 7 Ultimate 64-bit/Zorin OS 49" 4K 240Hz Sony TV Corsair K70 RGB Rapidfire Corsair AX860i 
CaseMouse
Haf X Logitech G400s 
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post #10 of 15
Quote:
Originally Posted by TheHorse View Post

Nice to have a low wattage CPU. Don't think I'll be upgrading it anytime soon either, CPUs don't jump in performance each generation like they used to.

 

I thought that Skylake is supposed to be a jump in performance.

It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(18 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 DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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