AMD Radeon R9 295X2 Owners Thread

up2nogooduk · 6 Feb 2015 at 00:17

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up2nogooduk · 6 Feb 2015 at 00:18

Uncle Petey said:
@up2nogooduk
You'll find that you can go to about 135-140% scaling (assuming your base res is 1080p) with full ultra/4xAA before you may start running into vram issues on the more demanding maps.
200% (4K) is perfectly doable if you disable AA. Looks great either way tbh.
ED: This is assuming Mantle usage. You may see lower usage with DX11.

@Smrtka
Undervolting is basically lowering the voltage of the gpu below stock settings, which means it uses less power and runs cooler as a result.

Will try 200% with no AA Thanks

Would you lose much performance lowering the Voltage?

Cheers

Shiari · 6 Feb 2015 at 00:22

up2nogooduk said:
Will try 200% with no AA Thanks
Would you lose much performance lowering the Voltage?

Cheers

Nope, but you can lose some heat if you can manage to lower the voltage while not crashing. By default the voltage is slightly higher to compensate for small differences between each chip.

Uncle Petey · 6 Feb 2015 at 00:42

up2nogooduk said:
Will try 200% with no AA Thanks

Btw, I just tried ultra/4xAA @200% in DX11 and only saw usage in the mid 3GB range.
However, it was a noticable step down from Mantle smoothery. Not unplayable or anything, just not as nice.

I'd personally rather use mantle with either of the settings I mentioned earlier fwiw.

Smrtka said:
OK, so if my max temps are 68 there is no need to do so is it? I also wonder what are the temps with dual fan setup with the noctura fans... Isn't it very loud?

No, not any real need there.
It's not always a matter of need tbh though. You may just want to get your temps and power draw as low as you can for whatever reason, even if they're not troubling in the first place.

up2nogooduk · 6 Feb 2015 at 01:07

Uncle Petey said:
Btw, I just tried ultra/4xAA @200% in DX11 and only saw usage in the mid 3GB range.
However, it was a noticable step down from Mantle smoothery. Not unplayable or anything, just not as nice.

I'd personally rather use mantle with either of the settings I mentioned earlier fwiw.

No, not any real need there.
It's not always a matter of need tbh though. You may just want to get your temps and power draw as low as you can for whatever reason, even if they're not troubling in the first place.

Just tried ultra/0xAA @200% with V-SYNC, with mantle... looks really good. and very smooth.
That mean no need for a 4K monitor then?

LtMatt · 6 Feb 2015 at 07:09

up2nogooduk said:
What fan control you using Matt.
Are them fans sucking air in or out.

I just up the res on bf4 to 1600p. What a difference. Even with v.sync on it's so smooth.

What a difference 3 GPU's make.

My temps were 65. 66 on the 295x2, and 62 on the Lightning. I'm sure @ 4k it will rise.. that's Sucking air out. Maybe 2 fans sucking air in will be better.

Summer time it will get hot lol.
I haven't took the voltage down tho. Not sure I need to till I use 4k..

Sucking air in. With the 750D I'm not sure it would work at the front as an exhaust because there is a big plastic cover near the front fans. There would be very little room for the heat to escape.

I think the best setup might be to move the top rad to the top rear of the case and move the bottom rad up a slot to the front. Have them both intaking and the H110 as my main exhaust through the roof. This makes most sense with how heat rises, however this may spoil the looks and the pipes would be in different places. I will see how this goes for now, but i may change it later. I'm very happy at the moment though.

Smrtka said:
I've had Afterburner on for the whole day and max temp was 66 C and that was BF4 on ultra 1080p with stock fans,

Matt shouldn't the pipes be on the bottom ? and can you please explain what is that undervolting and what are the benefits ?

The pipes are at the bottom mate, what do you mean? :confused:

JediFragger said:
Niiiiiiiiiiiiice!!!!!!!!!!!!!!!!

Ok -0.090v was not perfect either. I noticed some minor texture corruption and occasional screen flicker, so I'm now running -0.080v and looking good. May try -0.085v just to get temps as low as possible, but if not i think either -0.075v or -0.080v will be golden for lifetime 24/7 at 1018/1250.

Smrtka · 6 Feb 2015 at 09:23

AMDMatt said:
The pipes are at the bottom mate, what do you mean?

From the picture it looks like the pipes on the GPU rad are to the left, I thought they have to be on the bottom...or maybe I'm just blind

LtMatt · 6 Feb 2015 at 09:28

Smrtka said:
From the picture it looks like the pipes on the GPU rad are to the left, I thought they have to be on the bottom...or maybe I'm just blind

Ah ok i see what you mean. Yes they are to the side, i don't think it would be possible to have them any other way because i have two rads next to each other.

Smrtka · 6 Feb 2015 at 10:33

AMDMatt said:
Ah ok i see what you mean. Yes they are to the side, i don't think it would be possible to have them any other way because i have two rads next to each other.

I thought that it needs to be on the bottom for the best performance....that might be the reason for higher temps ?

LtMatt · 6 Feb 2015 at 10:37

Smrtka said:
I thought that it needs to be on the bottom for the best performance....that might be the reason for higher temps ?

I doubt it makes much difference, but I've not tested this personally. Temps are not an issue for me at the moment, but I've not had an extended gaming session yet.

This is with the fans at very low rpm (barely moving) and silent.

Bonjour · 6 Feb 2015 at 10:41

Power limit +50??

LtMatt · 6 Feb 2015 at 10:42

Bonjour said:
Power limit +50??

Yes, no reason not to have it at maximum 24/7.

VincentHanna · 6 Feb 2015 at 11:03

What does the power limit do exactly?

LtMatt · 6 Feb 2015 at 11:05

VincentHanna said:
What does the power limit do exactly?

Allows the card to be overclocked without powertune restricting the core clock limits to maintain the specified stock TDP at 0% power tune. Put it at 50% and forget about it.

Bonjour · 6 Feb 2015 at 11:31

I have mine at +25.

Any reason I should whack it up to +50 with crossfired 290s?

LtMatt · 6 Feb 2015 at 11:32

Bonjour said:
I have mine at +25.

Any reason I should whack it up to +50 with crossfired 290s?

Any reason you shouldn't?

Bonjour · 6 Feb 2015 at 11:37

I don't know. You tell me Mr. AMD man.

LtMatt · 6 Feb 2015 at 11:39

Bonjour said:
I don't know. You tell me Mr. AMD man.

It makes sense to allow the card to draw as much power as it needs in any given scenario. It may never need 50% unless overclocked, but it does not hurt to have it at that setting in my opinion.

Final8y · 6 Feb 2015 at 11:41

up2nogooduk said:
Just tried ultra/0xAA @200% with V-SYNC, with mantle... looks really good. and very smooth.

Damn straight!

Final8y · 6 Feb 2015 at 11:42

AMDMatt said:
Allows the card to be overclocked without powertune restricting the core clock limits to maintain the specified stock TDP at 0% power tune. Put it at 50% and forget about it.

+1
I put it at +50% overclocked or not.