Topic Title: Two x R9-270 and big fps drops
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Created On: 07/27/2014 06:10 PM
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 07/27/2014 06:10 PM
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Pickwolf
Peon

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I have a system with an FX-8350 cpu and two R9-270s and Ive been playing @60 fps and within 10mins the fps will drop to around 12/15 fps then after 10 secs it will go back up to 60fps. This happens on most games

 07/27/2014 06:42 PM
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Practikill
Grinding Levels

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Perhaps there is something running in the background eating up the CPU or GPU from time to time.

Look for anything running that you don't need, and kill it.



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Asus P5Q-SE+ / Core2 Duo E7400 2.8GHZ / 4GB DDR2 / HD6870 1GB / Sound Blaster X-Fi XtremeGamer / Ultra 650watt PSU / Windows 7 X64

 07/27/2014 07:14 PM
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Earnhardt
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Originally posted by: Pickwolf I have a system with an FX-8350 cpu and two R9-270s and Ive been playing @60 fps and within 10mins the fps will drop to around 12/15 fps then after 10 secs it will go back up to 60fps. This happens on most games

 

Are you expecting people to guess or were you planning on letting people know what your system specs are?

http://forums.amd.com/game/messageview.cfm?catid=454&threadid=160419&enterthread=y



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AMD Phenom II 1100t @4.0Ghz /Asus sabertooth 990fx/2x Gigabyte 3G 7950's in crossfire/500G samsung 840 ssd/16G G-Skill Ripjaw 1600/2-samsung 24" monitors 1920X1200/Corsair AX1200W psu/W7 pro 64,G19 keyboard,Roccat kone pure mouse,Cooler master HAF932,Corsair H100i water cooler,Zalman ram cooler.Sound Blaster X-Fi Titanium Fatal1ty Champion Series,Logitech Z5500 speakers,Roccat Kave 5.1 headset.

 07/27/2014 07:38 PM
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Pickwolf
Peon

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Windows 7 64bit

asrock 990fx extreme3

X2 GTX R9 270 2GB GDDR5 GPU

12RAM

FX-8350 4.00 GHz

PS 600w



Edited: 07/28/2014 at 06:51 AM by Pickwolf
 07/27/2014 08:00 PM
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Pickwolf
Peon

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I just tried that and it still does that

 07/27/2014 10:06 PM
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zipsi
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Some say that a single generic "600w" psu just isn't enough to drive two r9 270's. If that 600 watt psu is from a high quality manufacturer like Corsair, Seasonic or Enermax, things should be theoretically fine. Otherwise, a 650-700w psu is needed. So the bottom line is, to avoid catastrophic failure, the gpu's turn down their clocks to consume less power so such an event wouldn't occur. A thing you could try is, disconnect one gpu entirely (for less power consumption) and see if it gives you stable framerates. If the issue still occurs, the problem lies somewhere else.



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Intel I7 3770K @ 4.5ghz, Cooler Master Hyper 212 Evo, Gigabyte Z77X-UD3H, Gigabyte HD7970 ghz edition, 4x4gb Kingston HyperX Beast 2133mhz, Seasonic Platinum 860, Samsung 840 Pro 256gb, OCZ Vertex 4 128gb, WD Black 1TB, WD Green 3TB+1.5TB, ASUS Xonar Essence ST, ASUS VE278Q, Windows 3.11
 07/27/2014 10:39 PM
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Pickwolf
Peon

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I just tried it and it still drop to 15

 07/27/2014 10:44 PM
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black_zion
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Two 270s will eat 300w, 125w for the processor, everything else can easily eat 75w, so unless you have at least 42A on the +12V rail (total watts rating is meaningless, continuous, not peak, +12v amperage supply is everything), that's your problem. Many piece of crap, cheaply made, overpriced (Rocketfish especially) power supplies derive much of their "total watts" rating from 5v and 3.3v rails.

42A is the bare minimum you need, ideally you should have 84A for optimal efficiency but 63A is enough for a good cushion.

Hard to believe Crossfire is working properly with x16/x4, that could be your issue as well.

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AMD FX-8350 w/ Corsair H105, ASUS Sabertooth 990FX Gen3/R2, 8GiB G.SKILL DDR3-2133, XFX HD 7970, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, Corsair C70, HP ZR2440w, Win 7 Ultimate x64

Edited: 07/27/2014 at 10:51 PM by black_zion
 07/27/2014 11:50 PM
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Earnhardt
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How are you running an 8350 AM3+ CPU in a FM2 socket mobo?

"Support for Socket FM2 100W processors"

http://www.asrock.com/mb/AMD/FM2A85X%20Extreme6/?cat=CPU



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AMD Phenom II 1100t @4.0Ghz /Asus sabertooth 990fx/2x Gigabyte 3G 7950's in crossfire/500G samsung 840 ssd/16G G-Skill Ripjaw 1600/2-samsung 24" monitors 1920X1200/Corsair AX1200W psu/W7 pro 64,G19 keyboard,Roccat kone pure mouse,Cooler master HAF932,Corsair H100i water cooler,Zalman ram cooler.Sound Blaster X-Fi Titanium Fatal1ty Champion Series,Logitech Z5500 speakers,Roccat Kave 5.1 headset.

 07/28/2014 06:14 AM
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Pickwolf
Peon

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sorry its an asrock 990fx extreme3

 07/28/2014 06:50 AM
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Pickwolf
Peon

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These are the outputs from my power supply

  • Model: CX600
  • AC Input: 100-240V
  • Input Current: 10-5A
  • Frequency: 47~63Hz
  • Max Load Max Output: +3.3V 120W 25A, +5V 25A 130W, +12V 46A 552W, -12V 9.6W 0.8A, +5Vsb 15W 3A
  • Total Power: 600W
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