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[Official] AMD R9 295X2 Owners Club - Page 845

post #8441 of 9133
here's one at hardforum:

http://hardforum.com/showthread.php?t=1871056&highlight=295x2
post #8442 of 9133
So this is what I'm experiencing:
Flickering with crossfire + freesync enabled.
This is with 16.1.1 drivers.
For example, when I run World of warcraft, then alt-tab into windows, then run skype, then the desktop starts flickering, especially when I try to move the skype window.

The usage and frequency fluctuation with games, mostly older ones(DX9, DX10)...
Here are two vids showing the fluctuations. Both clock and usage.
#1 World of Warcraft 3.3.5 - https://www.youtube.com/watch?v=klvuk9KeP3c
#2 Crysis 1 - https://www.youtube.com/watch?v=wB4NV0qcqHQ

System spec-
Intel i7 4790K @5.1G
Asus M7 Hero
Corsair Dominator Platinum 4*4GB 2666CL10
Asus Ares III (2*290X)
Superflower Leadex 1200W Platinum
BenQ XL2730Z @1440p/144Hz

AMD Drivers: 16.1.1 Crimson, Windows 10 Pro 64 bit.
post #8443 of 9133
Would a EVGA 750W G2 PSU be cutting it close / work fine with a 295x2 and the following specs below?

ASROCK Z68-PRO3 Motherboard
2500K@4.5ghz + Corsair H60 CPU Cooler
8GB DDR3 RAM
120GB SSD + 4TB HDD
Phantek Enthoo Pro Case (with 2 stock fans installed)
24" 1080p 144hz freesync monitor
post #8444 of 9133
I would refer to the valuable PSU spreadsheet listing available earlier in this TOPIC.

I tried the 295x2 with a 5930K, MSI X99S MPower board, 32GB G.Skill 2666 DDR4, 4 drives, 4 chassis fans, and a BeQuiet Dark Rock TF cooler. The PSU was the Corsair AX860i. It was not able to handle it. Regular crashes as soon as things started to cook in games, or testing. I had tried two MSI R9 290s in Crossfire before that and THEY ALSO DID NOT WORK with only the AX860i PSU. I replaced the 295x2 with a Sapphire Fury Tri-X OC, and moved the 295x2 into a new build with an EVGA 1600 G2, FX8350, ASRock 990FX Fatal1ty with M.2, and 32GB DDR3 RAM. I believe anything under 1000w is cutting it close with this card, and special attention needs to be focused on the 12v rail, to ensure its a SINGLE rail, and has the correct OCP protections. I had attempted to power the card with a Silverstone 1200w unit, but it turned out the 12v rail had been segmented with 4 OCPs, into effectively 4 rails with a maximum of 28 AMPs per OCP.

Check the spreadsheet (I believe it starts on page 490 of this topic) and validate your PSU choice against that. It certainly helped me.

Good luck!!
post #8445 of 9133
Looking at the specs, 62 amps, its a little too close for me. Amd recommends 50 amps for the 2952x2 and you would want at least 20 amps for the rest of your system.

edit: 850w gold/platinum would be the minimum imho, just dont dial up the clocks like crazy. 1000w+, you should be good. Just make sure you read the rails specs. The list I made in the op helps with the majority of units out there.
Edited by wermad - 2/4/16 at 6:52pm
post #8446 of 9133
Quote:
Originally Posted by AvengerNoonZz View Post

Would a EVGA 750W G2 PSU be cutting it close / work fine with a 295x2 and the following specs below?

ASROCK Z68-PRO3 Motherboard
2500K@4.5ghz + Corsair H60 CPU Cooler
8GB DDR3 RAM
120GB SSD + 4TB HDD
Phantek Enthoo Pro Case (with 2 stock fans installed)
24" 1080p 144hz freesync monitor

http://imgur.com/IFUaNiH

mine pulls 790w in and 720out. i think worse case, you remove any OC and you are ok

Asus Z87 deluxe
4770k @ 4.3Ghz - h100i with 2 noctua fans
295x2 with noctua fan (OC +8 GPU, 50%+ Power, 1600Mhz)
16gb ram
500gb 850 evo ssd
240gb 830 ssd
2tb hdd
1tb extrenal hdd
3 noctua case fans
hx850i (platinum rated)
post #8447 of 9133
Thanks all.

I found a used Thermaltake 1200W PSU (W0133RA) which is promised to be in excellent condition and comes with all cables for about $170 AUD / $122 USD so I might get that. Fingers crossed.
post #8448 of 9133
Quote:
Originally Posted by AvengerNoonZz View Post

Thanks all.

I found a used Thermaltake 1200W PSU (W0133RA) which is promised to be in excellent condition and comes with all cables for about $170 AUD / $122 USD so I might get that. Fingers crossed.

Make sure you find out how each connector/plug is assigned to the two rails:

+3.3V@25A, +5V@25A, +12V1@40A, +12V2@85A, -12V@0.8A, +5VSB@6A


As long as your 295x2 is going through the second rail, you're perfectly fine thumb.gif. Usually, the manufacturer provides a wiring diagram to tell you which pin/wire is assigned to what rail.


Here's the lepa g1600 as an example:


Edited by wermad - 2/4/16 at 8:02pm
post #8449 of 9133
What do you guys think of the Cooler Master Silent Pro M2 1000 W Power Supply? It is able to supply 80A on a single 12V rail, so about 50A for the GPU and 30A for the rest of my components?
Edited by AvengerNoonZz - 2/5/16 at 3:04am
post #8450 of 9133
That's fine. Though I have a friend who had issues with that one and even the rma's were bad. If you can, look for a cm v1000 or v1200. These are using better platforms and are fully modular. I had two v1000s and they're great.
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