I have three 4k quality monitors and want to do microsoft flight sim.

tanagon
I have three 4k quality monitors and want to do microsoft flight sim.

Lol, no graphic card today can run MSFS on three 4k monitors at decent frame rate (90+ fps)

3080ti are failed 3090 bin'd cards. but in most benchmarks the cards perform identical going tit for tat. the main difference is the 24g on the 90 vs the 12g on the 80ti. you would be hard pressed to find a game that pushes usage past 8-9. so if they are both available to you, at MSRP the TI is a better cost to performance for your use. I personally have a 3090 but its all I could get back in December. even at 3 4k monitors the game won't use more than 8-9g of vram so you would never get use out what you paid extra for in a 3090.

Other than having the best GPU for gaming currently in existence? Nothing.

I had a engineering simulation software that relied on VRAM to make a mesh. The more VRAM I had, the more accurate my simulation would be. That's what the 3090 is for, people that need that extra 12GB of VRAM.
 
Do you need 12GB extra of VRAM for gaming? As of this moment, absolutely not! And seeing that gaming consoles don't even need more than 12GB of VRAM (remember, the VRAM is shared with the OS running in the background of a console), you probably won't either. 
 
Unless if your well being relies on 12GB of VRAM, it is better for your well being to save money.

MORE RAM MORE POWER BABAY. lol better for workstations

From what I understand, the real benefit to the 3090 is only realized for content creators doing advanced 3D rendering and animation.  That is where the extra VRAM comes in handy.  For games, there's no real reason that 24GB would be necessary for the foreseeable future.  By the time it is necessary for gaming, a much faster and cheaper card will be available.

javelina1
I have a 3090 which I was fortunate to pickup at MSRP.  I use it quite heavily with my Reverb G2, and VR a lot with DCS, IL-2, and MSFS2020.  At times, I've seen the VRAM usage (in DCS) at 12-15GB's, and even at 18GB's+.  I'm quite happy having that extra VRAM head room.  If you can get either card at MSRP, go for it!  But given the choice between a 3080ti & the 3090, I'd take the 3090 based on my particular gaming use case....  For 2D/Pancake mode, the 3080ti is perfect I'm sure.

Pretty much this. If you game in VR (roughly 6K on G2), 3090 seems the best choice given the price difference with 3080Ti. Especially if you’re into seated simulation genre (driving/flight), I can’t understand the passion for 4K when you can have a G2 for less than the cost of a decent 4K monitor.

I watched the video. There is a difference of several fps between 3080ti and 3090. However, for now, it turns out that even 3080ti is high enough specs for me.

Those results are close enough that you can call them the same. 
 
I am on several wait lists for 3080, have been since the first week. I even prepaid for a 3080 at memex in canada. I have now have 2x 3090's. I cancelled the prepaid one, I'm still on the EVGA list for a 3080. 
 
Repeating what everyone already said, you buy the one you can get. Which will probably still end up being a 3090. If we're not talking about paying scalpers.
 
The demand and shortage has gotten worse and worse since day one. 
 

mluthi
I haven't been able to find benchmarks that show the 3090 providing tangible benefits over, say, a 3080 in Photoshop. Don't get me wrong, I'd love another reason to try and justify buying a 3090, just seems very similar to gaming in that the "gains" are slim. Is there an example of Photoshop use where the 3090 really shows off? 

I don't personally use Photoshop but the only reason a person would benefit from the 3090 is if the work they do requires more than 12GB of VRAM. I doubt you'll ever find benchmarks of where a 3090 really shows off vs 3080Ti.
If you run out of video memory when using Photoshop, with 8/12GB of VRAM than the 3090 is better, I guess.
As I said I don't use PS so I don't even know if there are people that are actually working the number of files or size of files that would actually need 24GB. 
 
There are 100% people that do benefit from the 24GB of memory for the type of work they do. 
 
I'm guessing if you're someone that would benefit from the extra VRAM for your job/work then you'd probably already know it. 

javelina1
I have a 3090 which I was fortunate to pickup at MSRP.  I use it quite heavily with my Reverb G2, and VR a lot with DCS, IL-2, and MSFS2020.  At times, I've seen the VRAM usage (in DCS) at 12-15GB's, and even at 18GB's+.  I'm quite happy having that extra VRAM head room.  If you can get either card at MSRP, go for it!  But given the choice between a 3080ti & the 3090, I'd take the 3090 based on my particular gaming use case....  For 2D/Pancake mode, the 3080ti is perfect I'm sure.

How is the graphics quality of that Reverb G2 in DCS and MS2020? I was gifted a Oculus Quest and the VR immersion is amazing but the screen door effect is substantial and the clarity isn't good enough for DCS. 

evga's gpu is great because it's cool and the price is modest

AngryAce

javelina1
I have a 3090 which I was fortunate to pickup at MSRP.  I use it quite heavily with my Reverb G2, and VR a lot with DCS, IL-2, and MSFS2020.  At times, I've seen the VRAM usage (in DCS) at 12-15GB's, and even at 18GB's+.  I'm quite happy having that extra VRAM head room.  If you can get either card at MSRP, go for it!  But given the choice between a 3080ti & the 3090, I'd take the 3090 based on my particular gaming use case....  For 2D/Pancake mode, the 3080ti is perfect I'm sure.

How is the graphics quality of that Reverb G2 in DCS and MS2020? I was gifted a Oculus Quest and the VR immersion is amazing but the screen door effect is substantial and the clarity isn't good enough for DCS. 

no screen door with the G2.  Looks great in DCS.  But with DCS, it'll take as much CPU and GPU you can throw at it.  There's a few threads on DCS for trying to squeeze the VR turnip as much as possible.  with any sim/VR, just lots of tuning and tweaks....      (I saw last week that Walmart was selling the G2 for $399.  awesome price for an HMD of that resolution).

charlesborner
Basically the 3090 wins over the 3080Ti when what you need is NOT "grunt".
It wins when what you need is FRAME BUFFER.
They're MOSTLY even up to 12GB utilization.
Once you rise above that, the extra 12GB of RAM can make a huge difference.

My understanding of frame buffer is it's space used in the VRAM for what the video card is displaying on the monitor. 
I could be wrong but people that would benefit most from the extra VRAM would be people using GPU's for AI/Machine Learning compute tasks. 
I don't think those use the frame buffer. I don't think the GPU sends that info to the display while executing those compute tasks. AFAIK it's more like mining, the cards are working hard but it's not displaying all that data.
 
I could be wrong, I don't use GPU's for those tasks. I am just a gamer. Again I could be totally wrong about that. 
 
If I am wrong, I'd love for someone to correct me. Everyone can learn new things. There really is no such thing as a know it all.