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Trifire power requirement

post #1 of 41
Thread Starter 
I currently have a R9 295x2 with a 1000w PSU and intel i7-4790k I was wondering if anyone knows if I could put a R9 290x in and do trifire, but I'm not sure if I have a big enough PSU
post #2 of 41

You should have enough power, but do you have the CPU overclocked? How far?

 

Do you also plan to overclock the video cards?

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It's a computer!
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post #3 of 41
yes enough power for trifire. but dont oc your gpu's. oc as max as you can your cpu. thumb.gif
my budget gaming
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post #4 of 41
As a rule I start at 500 watts and then add 200 watts for each extra card I put in. That's just my personal thing, but I think it's a good rule of thumb.
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post #5 of 41
I just fired up BF4 at stock GPU clocks and I am pulling just shy of 1100 Watts at the wall.....CPU is overclocked to 4.4GHZ @1.385V

Hard to see, crappy phone pic, but it says 1096 watts, so not sure what your processor pulls versus mine, but I am thinking you are gonna be really, really close..close enough where I would want a larger PSU maybe.
imagea4aa5.jpg
Edited by the9quad - 5/22/15 at 1:07pm
post #6 of 41

If the 4930K has a similar power consumption to the 3930K, then it's pulling a lot more than the 4790K (which is just a mainstream CPU as well).

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It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #7 of 41
Quote:
Originally Posted by TwoCables View Post

If the 4930K has a similar power consumption to the 3930K, then it's pulling a lot more than the 4790K (which is just a mainstream CPU as well).
\

4930k way less power than a 3930k, 22nm vs 32nm



here is his processor, so not that much different, he would still be pushing really really close if not over 1000watts, i think.

average-power.png
Edited by the9quad - 5/22/15 at 1:20pm
post #8 of 41

But if your PSU is 90% efficient while pulling 1100W from the wall, then your computer is pulling 990W from the PSU which is doable for a very high-end 1000W PSU like that (it can deliver 1000W 24/7 if it's ever needed).

It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 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 DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #9 of 41
So you think he is cool to just roll the dice and pray he never exceeds that 10 watt headroom? His Power supply is 1000 watts remember biggrin.gif


I think he would be wise to get a bigger power supply or just stick with 2 cards, but then again maybe the 295x2 draws less power than 2 290x's.

Either way I know I have 200 or so watts to spare, and I still don't feel comfortable, with only a 1200 watt Power supply. Maybe he would?


Edit- it looks like the 295x2 uses about 50 watts less than two 290x's under load. So he bought himself another 50 watts..plus he prolly has 50-100 watts less with his processor maybe. So he would probably pull close to 1000 watts at the wall, still dang close really.
Edited by the9quad - 5/22/15 at 1:35pm
post #10 of 41
Hey OP, if your psu fries be sure to come back and let us know!
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