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Posted
On 10/30/2021 at 12:46 PM, Pappen said:

On a flat screen with settings from OP, Powercolor Radeon RX 6900 XT RED DEVIL 16GB@stock

Avrage: 69 Min: 48 Max: 87

Nice, nice!

Great to see a comparison. I wasn't sure if I should get a 6900xt if chances permit. Looks like I'll be opting for the 3080ti since the difference is massive; that is, if I can get it somewhere for less than 2k. When they dropped, they were available for 1.5k, then they only went up, which sucks.

  • Like 1

dcsdashie-hb-ed.jpg

 

Posted (edited)

I just received the 3080 i ordered a year ago. I've been using a 6900xt in the mean time and been very happy with it. 

I'm gonna test the 3080 over the weekend and will only keep one. I have found it took a while to tune the amd and small changes coildnoften make a big difference. Force dx11 in my case needs to be on. Don't use rage mode, just run the GPU stock. I get smooth experience with steady fps in the 60s and frame times under 15. Settings all high. No msaa but 4 x anstisopotric.

There is occasional stutters but I see my GPU is rarely using more than 11gb of its RAM. The only thing I'd like to be able to do is use msaa and get rid of the jagged edges in my g2. As soon as I add msaa the fps falls apart and drops significantly. 

My g2 and 6900xt don't like motion vector. However steamvr motion smoothing works well. 

Edited by TED
Posted

Any results from the testing of 3080 versus the 6900XT?

I'm looking for a new card myself, and the only option right now is AMD.

Have seen different results on AMD vs Nvidia. One better for AMD and one worse. But only 2 tests so far. So very small sample.

Posted

I've now been using the 3080 for a few days and I'm still not 100% decided which I will keep. Both are excellent and can produce great results with the right settings and a bit of tweaking. Both have their strengths and weaknesses. I definitely prefer the amd software. 

It seems the 3080 has a slight edge in vr as I seem to be able to easily use msaa and mv. The 6900XT does not seem to like msaa and it causes very high hit on frame times. However the 6900 seems more stable and I get less unexpected stutters. For some reason every now and again the 3080 just loses it and I have to do a full restart. However when it's all working the 3080 looks better in vr. I feel this is a result of the vram speed as opposed to total ram size. The 3080 is always close to 98-99% but the amd was almost always only using about 11gb of its 16gb.

For me msaa is a bit of a must with the g2 so I'm leaning slightly toward the 3080 but it's occasional instability where the vram gets maxed has me still a little unsure. 

Posted
6 hours ago, TED said:

I've now been using the 3080 for a few days and I'm still not 100% decided which I will keep. Both are excellent and can produce great results with the right settings and a bit of tweaking. Both have their strengths and weaknesses. I definitely prefer the amd software. 

It seems the 3080 has a slight edge in vr as I seem to be able to easily use msaa and mv. The 6900XT does not seem to like msaa and it causes very high hit on frame times. However the 6900 seems more stable and I get less unexpected stutters. For some reason every now and again the 3080 just loses it and I have to do a full restart. However when it's all working the 3080 looks better in vr. I feel this is a result of the vram speed as opposed to total ram size. The 3080 is always close to 98-99% but the amd was almost always only using about 11gb of its 16gb.

For me msaa is a bit of a must with the g2 so I'm leaning slightly toward the 3080 but it's occasional instability where the vram gets maxed has me still a little unsure. 

Interesting. What brand and model of 3080 you got? I had a MSI RTX 3080 Ventus 3X OC and it used to crash frequently until i lowered Memory 100 MHz and Core 50 MHz. After that, rock solid and I noticed no visible performance loss.

Cheers

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Posted
4 hours ago, jonass1 said:

Interesting. What brand and model of 3080 you got? I had a MSI RTX 3080 Ventus 3X OC and it used to crash frequently until i lowered Memory 100 MHz and Core 50 MHz. After that, rock solid and I noticed no visible performance loss.

Cheers

I also have the msi 3080 ventus 3x OC PLUS. How did you adjust the frequency? Through BIOS? I might have to try that. I wouldn’t say I experience regular crashes but enough to wonder what’s causing it. I’m not sure my amd has ever crashed. 

Posted (edited)

Just keep in mind that all forms of reprojections work absolutely terrible on 6900xt compared to Nvidia. Also if you are MSFS guy avoid 6900xt.

Edited by VitS
Posted
10 hours ago, VitS said:

Just keep in mind that all forms of reprojections work absolutely terrible on 6900xt compared to Nvidia. Also if you are MSFS guy avoid 6900xt.

 

Perhaps an overstatement ? Nothing wrong with Oculus' ASW , or Steam motion smoothing with my GPU . 

9700k @ stock , Aorus Pro Z390 wifi , 32gb 3200 mhz CL16 , 1tb EVO 970 , MSI RX 6800XT Gaming X TRIO , Seasonic Prime 850w Gold , Coolermaster H500m , Noctua NH-D15S , CH Pro throttle and T50CM2/WarBrD base on Foxxmounts , CH pedals , Reverb G2v2

Posted (edited)
5 hours ago, Svsmokey said:

Perhaps an overstatement ? Nothing wrong with Oculus' ASW , or Steam motion smoothing with my GPU . 

I agree. My 6900xt works great with motion vector and motion smoothing. Only msaa in mp it doesn't like. 

My 3080 manages msaa without too much problem though. The 6900XT is a beast and I'm still a big fan. Still testing and comparing and there's certainly some advantages with the amd. If only I could use msaa reliably it would be case closed. 

Edited by TED
Posted
On 11/26/2021 at 12:54 AM, TED said:

I also have the msi 3080 ventus 3x OC PLUS. How did you adjust the frequency? Through BIOS? I might have to try that. I wouldn’t say I experience regular crashes but enough to wonder what’s causing it. I’m not sure my amd has ever crashed. 

I used MSI Afterburner to tweak the frequencies: https://www.msi.com/Landing/afterburner/graphics-cards

Cheers

  • Like 1

Core i9 12900KF | ASUS ROG STRIX Z690-F GAMING WIFI | EVGA RTX 3090 FTW3 Ultra | 64GB DDR5 5200MHz | 3 x Samsung 980 Pro 1TB | MSI MAG 322CQR 32´ | VKB Gunfighter Mk.III MCG Pro | Thrustmaster Hotas Warthog Throttle | Thrusmaster T-Pendular Rudder | HP Reverb G2 | TrackIR 5 | Windows 11

  • 2 weeks later...
Posted

I just tried the track file in 4k in pancake mode with the settings mentioned by dureiken and my results are:

Min: 54, Max 117, Avg: 82.7

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9800X3D, RTX 4090, 96GB DDR 5, MSI Tomahawk 870E, Crucial 2TB x 2, TM WARTHOG COMBO + PENDULAR RUDDER PEDALS, THE AMAZING PIMAX 8K X, Sony 5.1 Spks+SubW | DCS, A-10C_II, AH-64D, F-14/15E/16/18, F-86F, AV-8B, M-2000C, SA342, Huey, Spitfire, FC3.

Posted

... and 72.7 average FPS in VR (with the dureiken setting as well) at native resolution of my PIMAX 5k super (2560*1440).  My 6900XT is a ASUS TUF Gaming.  Slightly OC'ed at 2800 MHz.

Weird that we get such different results.  Seems that depending on the HMD, you can get better performance with the AMD card. 

------------------------------------------------------------------------------------------------------------------------------------------------------------

9800X3D, RTX 4090, 96GB DDR 5, MSI Tomahawk 870E, Crucial 2TB x 2, TM WARTHOG COMBO + PENDULAR RUDDER PEDALS, THE AMAZING PIMAX 8K X, Sony 5.1 Spks+SubW | DCS, A-10C_II, AH-64D, F-14/15E/16/18, F-86F, AV-8B, M-2000C, SA342, Huey, Spitfire, FC3.

Posted

if only the common slobs like me could get one that's actually in stock...

Derek "BoxxMann" Speare

derekspearedesigns.com 25,000+ Gaming Enthusiasts Trust DSD Components to Perform!

i7-11700k 4.9g | RTX3080ti (finally!)| 64gb Ram | 2TB NVME PCIE4| Reverb G1 | CH Pro Throt/Fighterstick Pro | 4 DSD Boxes

Falcon XT/AT/3.0/4.0 | LB2 | DCS | LOMAC

Been Flight Simming Since 1988!

Useful VR settings and tips for DCS HERE

Posted

I’ve been testing the 3080 for a couple of weeks now and will go back to the 6900xt.

the 3080 is mostly very good but it has a few glitches and this is frustrating. Especially in mp when it get more populated the vram doesn’t seem to keep up. Stutters, occasional crashes and FPS drops. I never experienced this on the 6900xt. That being said when working as it should the image is possibly better in vr in the 3080, so I need to go back to tweaking the 6900xt and see what I get. 

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