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850W rated PSU, good for how close to 850?

hax0rmort
Level 11
I have a pretty decent 850. it's the AX series by Corsair which is their Professional, I think their top tier.

My question is, since I have these two new r9 290x's, how close to the 850 mark should I be okay at? When I'm using a single card in a non crossfire supported game, i'm around 600W on my Belkin Watt monitor. that is with cpu almost maxed on all cores and 99-100% of GPU use.

Throw in that 2nd card, i'm afraid to see what happens. I ran Battlefield 4 earlier, but even on Ultra it doesnt max out the cards (NICE 🙂 so eventually a game will come along that will and i'm afraid i might need to get a 1000W. thoughts?

extra info: I have a FX-9370, it does suck a bit more watts than a 8350 or below. I am overclocked to 4816MHz. Multiplier only.

Please advise...
-hax0rmort


MOBO - ASUS ROG Crosshair V Formula-Z
CPU - AMD FX-9370
RAM - AMD Radeon R9 Gamer Series 16GB (2 x 8GB) 2400 MHz
SSD1 - Samsung 840 EVO 250GB // Boot
SSD2 - Samsung 840 EVO 250GB // Game
GPU1 - ASUS Radeon R9 290X
GPU2 - ASUS Radeon R9 290X
COOLER - Corsair H100i AIO Liquid Cooler
PSU - Corsair RM Series 1000W Gold PSU
AUDIO - Creative Sound Blaster Z
CASE - NZXT H440 Red/Black
KEYBOARD - Corsair K95 RGB
MOUSE - SteelSeries Sensei
HEADSET - Logitech G430
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11 REPLIES 11

Zka17
Level 16
850W for two 290X and an FX-9370 won't be enough... specially if you will try to push the graphics cards too...

Zka17 wrote:
850W for two 290X and an FX-9370 won't be enough... specially if you will try to push the graphics cards too...


thanks for your quick response. I've been researching all night and am looking at the Corsair RM1000. It's a gaming PSU with a single 12v rail, (which i already have btw) 1000 would be plenty right?

I guess you're right. I'm playing World of Tanks right now, it's jusing a single core out of eight, and one GPU @ 60 percent, my watt meter is at ~600. there's NO way 850 could be enough with all three items maxed. I guess I didn't want to believe it 😞

1000W do right?
-hax0rmort


MOBO - ASUS ROG Crosshair V Formula-Z
CPU - AMD FX-9370
RAM - AMD Radeon R9 Gamer Series 16GB (2 x 8GB) 2400 MHz
SSD1 - Samsung 840 EVO 250GB // Boot
SSD2 - Samsung 840 EVO 250GB // Game
GPU1 - ASUS Radeon R9 290X
GPU2 - ASUS Radeon R9 290X
COOLER - Corsair H100i AIO Liquid Cooler
PSU - Corsair RM Series 1000W Gold PSU
AUDIO - Creative Sound Blaster Z
CASE - NZXT H440 Red/Black
KEYBOARD - Corsair K95 RGB
MOUSE - SteelSeries Sensei
HEADSET - Logitech G430

hax0rmort
Level 11
i take that back, the lack of corsair advertising a single 12 volt rail for the rm1000 probably means it has 4 of them 😞
-hax0rmort


MOBO - ASUS ROG Crosshair V Formula-Z
CPU - AMD FX-9370
RAM - AMD Radeon R9 Gamer Series 16GB (2 x 8GB) 2400 MHz
SSD1 - Samsung 840 EVO 250GB // Boot
SSD2 - Samsung 840 EVO 250GB // Game
GPU1 - ASUS Radeon R9 290X
GPU2 - ASUS Radeon R9 290X
COOLER - Corsair H100i AIO Liquid Cooler
PSU - Corsair RM Series 1000W Gold PSU
AUDIO - Creative Sound Blaster Z
CASE - NZXT H440 Red/Black
KEYBOARD - Corsair K95 RGB
MOUSE - SteelSeries Sensei
HEADSET - Logitech G430

Arne_Saknussemm
Level 40

Arne Saknussemm wrote:
It has a single 12v rail with 83.3A on it 🙂


THANK YOU THANK YOU! I just pulled the trigger on it because of your quote. got it for $129.99 with V.me and coupons!
-hax0rmort


MOBO - ASUS ROG Crosshair V Formula-Z
CPU - AMD FX-9370
RAM - AMD Radeon R9 Gamer Series 16GB (2 x 8GB) 2400 MHz
SSD1 - Samsung 840 EVO 250GB // Boot
SSD2 - Samsung 840 EVO 250GB // Game
GPU1 - ASUS Radeon R9 290X
GPU2 - ASUS Radeon R9 290X
COOLER - Corsair H100i AIO Liquid Cooler
PSU - Corsair RM Series 1000W Gold PSU
AUDIO - Creative Sound Blaster Z
CASE - NZXT H440 Red/Black
KEYBOARD - Corsair K95 RGB
MOUSE - SteelSeries Sensei
HEADSET - Logitech G430

Arne_Saknussemm
Level 40
Nice! 😄 should give you the headroom you need to use that fine rig to the max...

hax0rmort
Level 11
Arne,

Got it today! RM1000 installed, yay! Right now idle with my Belkin Watt monitor i'm at 225W. Playing a single threaded CPU and single GPU game I get about 525-550. I haven't tested out battlefield 4 yet, with both GPUs and CPUs cooking. Will do soon. Thanks, 850 wouldn't have done it. Needed to hear it from someone else 🙂
-hax0rmort


MOBO - ASUS ROG Crosshair V Formula-Z
CPU - AMD FX-9370
RAM - AMD Radeon R9 Gamer Series 16GB (2 x 8GB) 2400 MHz
SSD1 - Samsung 840 EVO 250GB // Boot
SSD2 - Samsung 840 EVO 250GB // Game
GPU1 - ASUS Radeon R9 290X
GPU2 - ASUS Radeon R9 290X
COOLER - Corsair H100i AIO Liquid Cooler
PSU - Corsair RM Series 1000W Gold PSU
AUDIO - Creative Sound Blaster Z
CASE - NZXT H440 Red/Black
KEYBOARD - Corsair K95 RGB
MOUSE - SteelSeries Sensei
HEADSET - Logitech G430

Arne_Saknussemm
Level 40
:DYeah, that's more like it...good headroom. Let us know the dual GPU pull when you fire up BF4....multiplayer is heavy on all CPU cores and all GPUs...

hax0rmort
Level 11
ouch! using FurMark with CPU burner enabled 860Watts......... wow...... I'm glad I didn't try this 2 days ago.

These cards are so awesome, even BF4 doesn't max them out on Ultra. I'm VERY pleased with these Asus cards and this power supply 😄
-hax0rmort


MOBO - ASUS ROG Crosshair V Formula-Z
CPU - AMD FX-9370
RAM - AMD Radeon R9 Gamer Series 16GB (2 x 8GB) 2400 MHz
SSD1 - Samsung 840 EVO 250GB // Boot
SSD2 - Samsung 840 EVO 250GB // Game
GPU1 - ASUS Radeon R9 290X
GPU2 - ASUS Radeon R9 290X
COOLER - Corsair H100i AIO Liquid Cooler
PSU - Corsair RM Series 1000W Gold PSU
AUDIO - Creative Sound Blaster Z
CASE - NZXT H440 Red/Black
KEYBOARD - Corsair K95 RGB
MOUSE - SteelSeries Sensei
HEADSET - Logitech G430