Not enough power?

[Eric1987]

So apparently from benchmarks a 1080 isn't faster than 2x290x's when crossfire is working as it should? I got more FPS in both scenarios than this benchmark.

http://www.guru3d.com/articles_pages/geforce_gtx_1080_overclocking_guide_with_afterburner_4_3,3.html

I got 112 FPS and 91 FPS.

 

[boozzer]

that should be normal isn't it?

 

[Eric1987]

that should be normal isn't it?

That's what I am asking. Looks like I'll skip this round.

 

[ShintaiDK]

Its also ~500W vs ~180W for that matter. And you depend on CF to work as you say.

 

[Eric1987]

Its also ~500W vs ~180W for that matter. And you depend on CF to work as you say.

So it's true though? I thought the 980 ti was around twice as fast.

 

[ShintaiDK]

So it's true though? I thought the 980 ti was around twice as fast.

The 1080 is roughly 70% faster than the 980. In VR its over twice as fast.

 

[RussianSensation]

So it's true though? I thought the 980 ti was around twice as fast.

When CF works, 980Ti/1080 is not a worthwhile upgrade. If you mine ether for the next 12 months, it will be enough for almost 2 free Vega/Big Pascal GPUs after you sell each of your cards for $100.
https://www.cryptocompare.com/mining/sapphire/radeon-r9-295x2-ethereum-mining/

 

[Eric1987]

Should I do that until a GPU comes around thats better?

 

[tential]

I think replacing the gpus with p10 isn't bad. Pulls down power usage immensely. That's the only thing I'd be concerned.

 

[ShintaiDK]

I think replacing the gpus with p10 isn't bad. Pulls down power usage immensely. That's the only thing I'd be concerned.

That makes no sense. A 1080 is a much better buy then.

 

[guskline]

When CF works, 980Ti/1080 is not a worthwhile upgrade. If you mine ether for the next 12 months, it will be enough for almost 2 free Vega/Big Pascal GPUs after you sell each of your cards for $100.
https://www.cryptocompare.com/mining/sapphire/radeon-r9-295x2-ethereum-mining/

With all due repect to my good friend RS I humbly disagree unless mining is your forte.

As you can see I have an EVGA GTX 980TI SC in my one rig and 2 R9 290s (I know not 290x but close enough) in my other rig.

My 980TI SC is at 1102 vcore vs stock of 1000 but my 290s are also slightly OC'd at 1000 vs stock of 947.

In Firestrike the graphics scores of the 2 R9 290s exceed the 980TI SC but not by much. Reg 23, 199 vs 18503;Extreme 10,166 vs 8561 and ultra 5018 vs 4233.

In actual gameplay the single 980TI SC is smoother, has more Vram and works on every game at higher texture settings unlike CF or SLI that needs a profile.

SO 980TI is a sidegrade in synthetic benchmark power but works with all games. The GTX1080 has 8G of faster Vram, VR support, much better thermals and is faster than the 980TI.

Frankly, the more I read, the more I am tempted to replace both 290s with a single solid GTX 1080 under water.

The wait for Vega seems way too long.

 

[Shmee]

1080 Ti or Vega would be the true upgrade as for a single card solution. Or get 2 of them

 

[IllogicalGlory]

So it's true though? I thought the 980 ti was around twice as fast.

An aftermarket one with an overclock is getting close.

If you factor in the 10.6% performance increase from overclocking, it's 81% faster. In games, the 1080 should win nearly every time. I could see it being behind only in perhaps Tomb Raider.

 

[guskline]

1080 Ti or Vega would be the true upgrade as for a single card solution. Or get 2 of them

Shmee I guess my point is unless you want to wait until 2017 (sometime?) who knows, a single GTX 1080 should replace 2 R9 290s in CF with nearly equal performance, significantly less power draw, twice the vram and faster vram and all the other bells and whistles.

 

[Eric1987]

1080 Ti or Vega would be the true upgrade as for a single card solution. Or get 2 of them

I think I might wait and do that mining or something. I am tired of dealing with multi gpu.

 

[tential]

With all due repect to my good friend RS I humbly disagree unless mining is your forte.

As you can see I have an EVGA GTX 980TI SC in my one rig and 2 R9 290s (I know not 290x but close enough) in my other rig.

My 980TI SC is at 1102 vcore vs stock of 1000 but my 290s are also slightly OC'd at 1000 vs stock of 947.

In Firestrike the graphics scores of the 2 R9 290s exceed the 980TI SC but not by much. Reg 23, 199 vs 18503;Extreme 10,166 vs 8561 and ultra 5018 vs 4233.

In actual gameplay the single 980TI SC is smoother, has more Vram and works on every game at higher texture settings unlike CF or SLI that needs a profile.

SO 980TI is a sidegrade in synthetic benchmark power but works with all games. The GTX1080 has 8G of faster Vram, VR support, much better thermals and is faster than the 980TI.

Frankly, the more I read, the more I am tempted to replace both 290s with a single solid GTX 1080 under water.

The wait for Vega seems way too long.

This thread is based on the assumption that CF works just like stated in the OP.

So if it's working, the R9 290s do very very well and are strong cards. I personally haven't played many games in which there was not a working CF profile. I can't think of any actually. If you're a person who plays a lot of gameworks games, or day 1 games, or just more obscure games then sure...

But the OP is saying SPECIFICALLY in situations where CF works, and in that case, I would NOT get a GTX 1080. I would get P10 crossfire, because we're talking about situations where CF works, and CF is very strong.

 

[ShintaiDK]

But the OP is saying SPECIFICALLY in situations where CF works, and in that case, I would NOT get a GTX 1080. I would get P10 crossfire, because we're talking about situations where CF works, and CF is very strong.

Replacing Hawaii with Polaris makes little sense. And if power usage is the concern, go 1080.

 

[tential]

Replacing Hawaii with Polaris makes little sense. And if power usage is the concern, go 1080.

We're talking about situations where CF works....
If Crossfire R9 290s is faster than GTX 1080 in CF, then P10 is faster than an R9 290, so it will also be faster. And Cheaper.