Sign in with
Sign up | Sign in
Your question

HD7950 Best 3D Route

Last response: in Graphics & Displays
Share
a b U Graphics card
September 23, 2012 2:26:46 PM

Hi Guys,

I've got three monitors in a landscape setup, I'm selling the middle one (BenQ G2420HDBL) in order to get a 3D one. Please note I only intend on playing 3D with one monitor and not in Eyefinity 3D.

After quite a bit of reading into passive vs active 3D, I'd like to clear a few things up. With active 3D will my frame rate be halved no matter what? Ie, if I'm playing BF3 at 68fps will I only get 34fps when using 3D? If so, I'd definitely prefer a passive 3D solution as I am uber sensitive to frame rates and only like playing above 50fps for smoothness.

If this is the case, what is the best passive 3D monitor to go for, considering I like to play at over 50fps?

Thanks,
Tristan

More about : hd7950 route

a b U Graphics card
September 23, 2012 2:50:06 PM

Seem's you'd need one hell of a PC to get 60fps 3D then :/  Anybody know any good passive 3D screens? I heard I'll need to use dual link DVI or I'll be limited at 24or 30hz
a b U Graphics card
September 23, 2012 2:53:30 PM

Can you list all your specs?
Related resources
a b U Graphics card
September 23, 2012 2:55:01 PM

Yep:

CPU - i5 2500K @ 4.0GHz
GPU - Sapphire HD7950 1200/1400
PSU - OCZ 1010w
Mobo - Gigabyte Z68X-UD5
RAM - 8GB (4x2GB) HyperX 1333MHz

:) 
a c 216 U Graphics card
a c 128 C Monitor
September 23, 2012 3:39:07 PM

tjcoops said:
Seem's you'd need one hell of a PC to get 60fps 3D then :/  Anybody know any good passive 3D screens? I heard I'll need to use dual link DVI or I'll be limited at 24or 30hz


It doesn't quite half your FPS, but it does come close. You can turn down settings so that you keep higher FPS, which is what I did at first, until I got a 680 sli setup.

Passive systems have a different drawback. Passive systems will half your resolution. Every other horizontal line will be missing for one eye or the other. You end up with a 1920x590 resolution and you can see the gaps between the lines a little bit or at least that is what some reviews say.
September 23, 2012 4:34:38 PM

My personal experience with 3D is that it doesn't quite half your FPS, but it does come close. However, you can turn down other settings without really noticing, this will gain you a lot of FPS especially with 3D and also you can basically lose AA with no loss at all. Also BF3 supports native HD3D my experience on Dirt 3 with HD3D is that it works legendarily good!! There's just a slightly weird thing. When you activate it or deactivate it in game your FPS will drop to 15 FPS and you won't ever change it no matter what you do. But its an easy fix just exit and restart the game and then you're golden! no issues whatsoever.
a b U Graphics card
September 23, 2012 6:05:33 PM

Does anyone have personal expereince witht he detail loss with passive 3D systems?

So if I turned down my graphics settings to say Medium, what frame rate could I expect from an active 3D solution with my single HD7950 on BF3

Thanks a lot!
a b U Graphics card
September 23, 2012 6:15:37 PM

Unless I am mistaken, passive also reduces your frame rates. The performance hit with active and passive is the same.

I have a passive 3D TV, and I can barely notice the solution loss, but that's because I am sitting on the couch when viewing it. If it we a passive monitor and you were only a foot or two away, I'm sure it would be a bit more noticeable, but I haven't seen it in person so not sure.

With a 7950, playing BF3 at medium settings should give you 50-60 frames most of the time when laying in 3D mode. I run a 680 and play in 3D, and am able to keep most settings on high, with a few turned down to medium/low, and I am at 50-60fps most of the time. But it all depends on what map. Some of the bigger 64player maps will yield lower fps.
a b U Graphics card
September 23, 2012 6:25:59 PM

I thought passive would result in the same as 2D performance because youve got half resolution for each eye, effectively making one full res scene. That sounds awesome about your active 3D results, my 7950 is heavily overclocked, and I'll be doing some more soon so I can get near/ on par with a stock 680 so I should get nice performance! :D 

So any recommendations on cheap active 3D monitors and glasses?

Thanks
a c 216 U Graphics card
a c 128 C Monitor
September 23, 2012 6:45:40 PM

tjcoops said:
I thought passive would result in the same as 2D performance because youve got half resolution for each eye, effectively making one full res scene. That sounds awesome about your active 3D results, my 7950 is heavily overclocked, and I'll be doing some more soon so I can get near/ on par with a stock 680 so I should get nice performance! :D 

So any recommendations on cheap active 3D monitors and glasses?

Thanks


I imagine this is only true on CPU bound games.
a b U Graphics card
September 24, 2012 8:34:28 PM

The more I read into this the more confused I get! :p 

According to threads and articles I've read, AMD's 3D system works through HDMI and so at 1080p only 24Hz is possible. 60Hz is possible at 720p but that's hardly any good.

Anyone confirm or disprove this? hopefully the articles I've read are just woefully out of date and AMD has improved this :p 

Thanks,
Tristan
a c 216 U Graphics card
a c 128 C Monitor
September 24, 2012 8:40:17 PM

tjcoops said:
The more I read into this the more confused I get! :p 

According to threads and articles I've read, AMD's 3D system works through HDMI and so at 1080p only 24Hz is possible. 60Hz is possible at 720p but that's hardly any good.

Anyone confirm or disprove this? hopefully the articles I've read are just woefully out of date and AMD has improved this :p 

Thanks,
Tristan


That used to be the case, but now they support Displayport 1.2, which allows for 1080p.
a b U Graphics card
September 24, 2012 8:45:53 PM

Brilliant! Would this also apply for me as I use a Mini-DP port which is converted to dual link DVI for the monitor?
a c 216 U Graphics card
a c 128 C Monitor
September 24, 2012 8:49:04 PM

tjcoops said:
Brilliant! Would this also apply for me as I use a Mini-DP port which is converted to dual link DVI for the monitor?


No, you can't do that. The converter will lose the signal needed to sync the 3D system, but you can use a mini-dp to DP connection. There is also at least one monitor that uses dual link DVI that supports AMD. I think it's the Samsung 700 something or other.
a b U Graphics card
September 25, 2012 9:43:42 AM

How come the Samsung one supports DVI 3D? Sorry for the questions! I found a good deal on the BenQ XL2410T (£130) and I was wondering whether I could get HD3D working with that. It's inputs are DVI or VGA.
a c 216 U Graphics card
a c 128 C Monitor
September 25, 2012 1:28:41 PM

tjcoops said:
How come the Samsung one supports DVI 3D? Sorry for the questions! I found a good deal on the BenQ XL2410T (£130) and I was wondering whether I could get HD3D working with that. It's inputs are DVI or VGA.


For the AMD system to work, it must be a monitor designed for HD3D, that BenQ isn't. It is designed to work with Nvidia, which has a slightly different system.

Why does it matter if it's DL-DVI? Your video card supports both connection types. Just by the monitor that works with your computer. Almost all Samsung 3D monitors are designed to work with AMD, that should help you find one for your card.
September 25, 2012 3:18:59 PM

I have a Samsung s27a950 and it works great with HD3D over DVI....
a b U Graphics card
September 25, 2012 9:58:50 PM

Bit out of my price range. Is it possible to get a monitor such as the BenQ XL2410T and overide the EDID to make it compatible with HD3D?
a c 216 U Graphics card
a c 128 C Monitor
September 25, 2012 10:02:54 PM

tjcoops said:
Bit out of my price range. Is it possible to get a monitor such as the BenQ XL2410T and overide the EDID to make it compatible with HD3D?

Just so you are aware, the BenQ XL2410T will require an extra $150 to use, as it doesn't come with the emitter or glasses. It also does not work with AMD anyways.
a b U Graphics card
September 25, 2012 10:35:20 PM

Thanks for your help. This has been the most confusing journey in my tech life by far! I think I'll get either a B-grade Samsung 23" (₤199) or an LG 23" cinema 3D (₤165) unless theree is something else I should consider?
a c 216 U Graphics card
a c 128 C Monitor
September 25, 2012 10:44:45 PM

Cinema displays are passive, just so you are aware. That means that you don't get 120hz and lower rez 3D, but it doesn't have crosstalk issues.

I don't know which Samsung you are referring to. That seems pretty cheap, make sure it has all you need.
a b U Graphics card
September 26, 2012 6:45:29 AM

I'm happy with passive or active, both seem to have a fair share of trade offs which make either a good choice personally. Sorry for not being more specific, it's the S23A700D that is £199, but B-Grade, so I contacted the company to see whether it includes the glasses because otherwise the brand new one at £239 would be a better option.

I've heard conflicting stories, some people say that the Passive LG D2342P-PN actually produces a better 3D effect than the active samsung S23A700D, plus you don't have the heavier hardware, batteries, etc. But I don't know what to think about that.
a c 216 U Graphics card
a c 128 C Monitor
September 26, 2012 1:34:08 PM

I don't know how the b-grade will affect quality. Since you are on such a tight budget, perhaps the passive system will be best for you, but I have not used them myself to give my experience.
a b U Graphics card
September 26, 2012 2:26:54 PM

Thanks a lot for your help and patience with my questions. I'll update the forum with my decision and results when I get one of the monitors.
a b U Graphics card
September 26, 2012 10:37:38 PM

Went for a B-Stock S23A700D I saw for £199, and if it's not right I can send it back within 2 weeks :) 
a c 216 U Graphics card
a c 128 C Monitor
September 26, 2012 11:00:32 PM

tjcoops said:
Went for a B-Stock S23A700D I saw for £199, and if it's not right I can send it back within 2 weeks :) 


As long as you can send it back, that sounds good. I do suggest making sure to lower settings enough to get to over 50 FPS. Active shutter systems can be very uncomfortable with low FPS.
a b U Graphics card
September 30, 2012 9:15:38 AM

The S23A700D came with everything I needed, just having to get a dual link DVI cable. I also bought an LG2343P yesterday as I couldn't be happy without knowing which tech I should go for. Currently making that decision, but text in passive 3D is terrible!
a c 216 U Graphics card
a c 128 C Monitor
September 30, 2012 2:51:57 PM

tjcoops said:
The S23A700D came with everything I needed, just having to get a dual link DVI cable. I also bought an LG2343P yesterday as I couldn't be happy without knowing which tech I should go for. Currently making that decision, but text in passive 3D is terrible!


That's what I've heard. It's because the resolution is 1920x590. Those missing horizontal lines are hard on text.
!