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[Official] AMD R9 290X / 290 Owners Club - Page 3985

post #39841 of 43975
Quote:
Originally Posted by serave View Post

from local review sites, efficiency of that PSU tops at 82%-ish

it doesnt have the 80+ rating because it only does 230VAC, anyway i realize i've done goof'd when i sold the i5, might get a new one when my next paycheck arrives

Drop the psu get a 650 gold 80+ one like EVGA PSU SuperNOVA 650 G2 or the 750 ( best on the market atm ) version for a bit more room. If you plan on heavily oc'ing both psu's will be enough, but the 750 will probably bring you a bit more lifetime in general then the 650 then. If you plan on going crossfire in the future, i wouldn't even go below anything lower then 1000w gold rated one.

The 290's are power hungry if not the most power hungry gpu's, my single 290 overclocked will push past 350 watt at times. And a budget psu which feature zero standards will probably not even push a stable 400w forwards. Your psu will have a hard time if it works at all. I hope your psu has protections build into it so it doesn't undervolt / overvolt your hardware on top of it which can make your live a nightmare. I had this happen once to me years back.

My current 1000w psu which i used for 2x 290's is dying and shutting my pc down ( probably my 2x 290's that killed it over time ). Ordered a new psu yesterday as i only have a 970 atm. I could buy a 750 cheapo power supply for 80 euro's, but i bought a 750w for 130 euro's, because the quality of it is just that much better and safer. All kinds of protections, lots of room to play around / silence etc.

One thing i learned never safe money on the psu.
post #39842 of 43975
Quote:
Originally Posted by megax05 View Post

update
I changed my case to the corsair vengeance c70 with stock fan config and cards on stock clocks 1000/1300 and my top card hits 91c on unigen heaven 4.0 and bottom card max @ 71c
I think i will need more fans in this case.
I think 91c for top card + 71c for the lower one is quite high for a tri-x card.
The stock fans are pretty poor in moving air especially when you have multiple gpus. Two exhaust fans on the side panel may help.
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post #39843 of 43975
Quote:
Originally Posted by kizwan View Post

The stock fans are pretty poor in moving air especially when you have multiple gpus. Two exhaust fans on the side panel may help.

What I did is i removed the drive cage and moved the fans to the front of the case and added 1 cheapo 120mm fan to the top of the case as exhaust also set the fans to spin @ 100% they are berly audiable and top card tops 82c @ 1050/1350 and the lower one hits 75c with custom fan curve .
I think its all about the quality of the fans and how much air they can move.

Overall I'm happy with my current results now have to save for set of quality fans and a 4k monitor. smile.gif
Edited by megax05 - 10/15/15 at 2:34am
post #39844 of 43975
I managed to oc up to 1100/1500 with +50mv and +50 power limit and my firestrike result was decent 15855 thats make me ranked 11th within similar system build.
I can live with that smile.gif
post #39845 of 43975
i got my 290 ref. for the price of cheapest 960 i could find here (around 200$) biggrin.gif
bought a used CLC (corsair h70) for 50$ rolleyes.gif
OC'd it to 1145/1525 (+100mV +15% 24/7 stable for gaming) (i know redface.gif its not a good overclocker redface.gif)
max temp i saw was 66
vrms are pasted with TIM +2fans blowing on them and suprisingly cool

super great value considering that 970 is priced about 400$ here rolleyes.gifbiggrin.gif



also scored 14789 (graphics) @ 1200/1620 with tesselation turned off
Edited by AliNT77 - 10/15/15 at 7:48am
post #39846 of 43975
Quote:
Originally Posted by AliNT77 View Post

i got my 290 ref. for the price of cheapest 960 i could find here (around 200$) biggrin.gif
bought a used CLC (corsair h70) for 50$ rolleyes.gif
OC'd it to 1145/1525 (+100mV +15% 24/7 stable for gaming) (i know redface.gif its not a good overclocker redface.gif)
max temp i saw was 66
vrms are pasted with TIM +2fans blowing on them and suprisingly cool

super great value considering that 970 is priced about 400$ here rolleyes.gifbiggrin.gif



also scored 14789 (graphics) @ 1200/1620 with tesselation turned off

Sweet dude. The 290 is such a great value buy and performs superbly if you give it a bit of love and out effort into cooling!
post #39847 of 43975
Quote:
Originally Posted by gatygun View Post

Drop the psu get a 650 gold 80+ one like EVGA PSU SuperNOVA 650 G2 or the 750 ( best on the market atm ) version for a bit more room. If you plan on heavily oc'ing both psu's will be enough, but the 750 will probably bring you a bit more lifetime in general then the 650 then. If you plan on going crossfire in the future, i wouldn't even go below anything lower then 1000w gold rated one.

The 290's are power hungry if not the most power hungry gpu's, my single 290 overclocked will push past 350 watt at times. And a budget psu which feature zero standards will probably not even push a stable 400w forwards. Your psu will have a hard time if it works at all. I hope your psu has protections build into it so it doesn't undervolt / overvolt your hardware on top of it which can make your live a nightmare. I had this happen once to me years back.

My current 1000w psu which i used for 2x 290's is dying and shutting my pc down ( probably my 2x 290's that killed it over time ). Ordered a new psu yesterday as i only have a 970 atm. I could buy a 750 cheapo power supply for 80 euro's, but i bought a 750w for 130 euro's, because the quality of it is just that much better and safer. All kinds of protections, lots of room to play around / silence etc.

One thing i learned never safe money on the psu.

You can safely go less than 1000w for CF 290's. I'm running CF 290's with a new EVGA Supernova 850GS PSU (made by seasonic). I have OC'd my 290's to 1200/1450 for benchmarking, but I mainly run them at stock clocks 24/7 (gives me more than enough performance anyways), so I'm not concerned at all. I could have gone with a cheaper quality 1000w bronze PSU, but decided to go with a top quality 850w gold unit instead (the best I could afford). The quality of the components used and the design of the unit also plays a significant roll in stability/longevity as well.

Besides that, I agree with you 100% - never skimp of the PSU. wink.gif
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post #39848 of 43975
Quote:
Originally Posted by MEC-777 View Post

You can safely go less than 1000w for CF 290's. I'm running CF 290's with a new EVGA Supernova 850GS PSU (made by seasonic). I have OC'd my 290's to 1200/1450 for benchmarking, but I mainly run them at stock clocks 24/7 (gives me more than enough performance anyways), so I'm not concerned at all. I could have gone with a cheaper quality 1000w bronze PSU, but decided to go with a top quality 850w gold unit instead (the best I could afford). The quality of the components used and the design of the unit also plays a significant roll in stability/longevity as well.

Besides that, I agree with you 100% - never skimp of the PSU. wink.gif
really that depends on how much power your cpu is pulling and if you plan to overvolt a lot...either way go quality because failure means headache and money...with Intel cpu probably not as much of an issue but say the 8320 heavily overclocked can run near 250 watt...we know overvolted 290s can push the upper 200s so 850 would be a minimum I would use for crossfire unless I knew they would stay stock...
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post #39849 of 43975
Quote:
Originally Posted by mfknjadagr8 View Post

really that depends on how much power your cpu is pulling and if you plan to overvolt a lot...either way go quality because failure means headache and money...with Intel cpu probably not as much of an issue but say the 8320 heavily overclocked can run near 250 watt...we know overvolted 290s can push the upper 200s so 850 would be a minimum I would use for crossfire unless I knew they would stay stock...

Oh for sure. I'm running an i5-4570, so no overclocking (just a little via baseclock @ 104). But, if I were running an FX 8-core and had it OC'd, I'd definitely agree and go for a 1000w minimum with that combined with 290's in CF. It really depends on the whole system, not just the core components. Every situation/build is a bit different. wink.gif

Indeed, quality is key. thumb.gif
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post #39850 of 43975
How do you guys OC the RAM so high? My card black screens when I hit 1400. The core is at 1100 without an increase in power limit or voltage but the RAM really doesn't like being OC'd.
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