AMD Navi 23 ‘NVIDIA Killer’ GPU Rumored to Support Hardware Ray Tracing, Coming Next Year

gpuerrilla · 17 Oct 2020 at 20:43

Howling said:
Good job AMD have some engineers to do some engineering I suppose?

KentMan said:
hes a software engineer, not an armchair one like a few regular posters here.

*Belly laughs*

Mr Oblong · 17 Oct 2020 at 20:44

Grim5 said:
only by a little bit - from what I've seen with RTX turning RT on at 4k requires an extra 500-1000mb of vram

That extra gig will make the difference between being above or below 10GB in a number of titles, I suspect.

Nablaoperator · 17 Oct 2020 at 20:51

4K8KW10 said:
0% more power, 120% higher performance?

Nablaoperator said:
Doesnt look right...
https://mobile.twitter.com/patrickschur_/status/1317527480866144257

rDNA2 target 1.6x per w of rDNA1 (official target 1.5)
rDNA1 params: 225w, 1755 MHz, 40 CU
rDNA2 params: 255w, 2400 MHz, 60 - 65 CU (80 to 90 % scaling)

That makes some sense.. this would be the lowest navi21 sku

Edit: this assumes tgp (nvidia specific term) is tbp (amd specific). Both mean power consumed by the whole graphic card

Mr Oblong · 17 Oct 2020 at 20:54

Nablaoperator said:
I don't think anyone's targeting 4k rtx on 3080 for sustained periods..

I beg to differ. 4K is where the card is strongest.

Nablaoperator · 17 Oct 2020 at 20:59

Mr Oblong said:
I beg to differ. 4K is where the card is strongest.

Not with rtx on... I like my 144hz

Hedge · 17 Oct 2020 at 21:02

Nablaoperator said:
Not with rtx on... I like my 144hz

Everyone liked their 144hz until they suddenly fell into the 3080 hype and now 60hz is all fine and dandy.

Unless its a console. Then lower framerates than 120 are unacceptable lol.

gpuerrilla · 17 Oct 2020 at 21:04

Hedge said:
Everyone liked their 144hz until they suddenly fell into the 3080 hype and now 60hz is all fine and dandy.

Unless its a console. Then lower framerates than 120 are unacceptable lol.

Yep. Funny how the narrative sways.

EastCoastHandle · 17 Oct 2020 at 21:05

Mr Oblong · 17 Oct 2020 at 21:07

Nablaoperator said:
Not with rtx on... I like my 144hz

That's fair, but I meant the delta to the 2080 is biggest at high resolutions. I will be gaming on 1440p 144hz or 4K OLED (up to 120hz) depending on the title.

Mr Oblong · 17 Oct 2020 at 21:08

Hedge said:
Everyone liked their 144hz until they suddenly fell into the 3080 hype and now 60hz is all fine and dandy.

Unless its a console. Then lower framerates than 120 are unacceptable lol.

For me it varies totally by game.

Hedge · 17 Oct 2020 at 21:12

Mr Oblong said:
For me it varies totally by game.

I'm happy enough to play anything over 30 if consistent for something like Final Fantasy 7. 60 + for most action games then higher better for Fps. But im quite happy if it's not jumping about.

Ive always been quite content though. I just find it funny seeing how the narrative shifts when 120fps+ is no longer possible.

Everyone was like omg a ps4 can only do 30fps. Puke puke! Now they have control doing 30fps with rtx on and they are pulling their plonkers.

five8five · 17 Oct 2020 at 21:13

Nablaoperator said:
255w is tough to swallow.. humbug should be out with his calculators any time now

It's not TBP though so there's a fair bit to add on.

Nablaoperator · 17 Oct 2020 at 21:15

five8five said:
It's not TBP though so there's a fair bit to add on.

Seems the guy got that data from an AIB, it's tbp .. so have changed my interpretation

Nablaoperator said:
rDNA2 target 1.6x per w of rDNA1 (official target 1.5)
rDNA1 params: 225w, 1755 MHz, 40 CU
rDNA2 params: 255w, 2400 MHz, 60 - 65 CU (80 to 90 % scaling)

That makes some sense.. this would be the lowest navi21 sku

Wrinkly · 17 Oct 2020 at 21:23

jonneymendoza said:
How? the 3080 is 350w!!!

3080 320 TDP, NAVI? 255W TGP.

No claims yet on NAVI's TDP, but it should be lower than the 3080 as it's using much slower but also less power hungry GDDR6 vs the 3080's GDDR6X. It will also be intersting to compare power usage on pure raster performance vs RT as the 3080 has dedicated RT hardware vs NAVI's shared design. I wish the 3080 was less power hungry as there is nothing worse than a sweaty gaming experience.

Nablaoperator · 17 Oct 2020 at 21:28

Wrinkly said:
3080 320 TDP, NAVI? 255W TGP.

Tgp is the same as tbp and higher than tdp..Unless you are implying something else

PrincessFrosty · 17 Oct 2020 at 21:43

EastCoastHandle said:

Wrinkly · 17 Oct 2020 at 21:45

Nablaoperator said:
Tgp is the same as tbp and higher than tdp..Unless you are implying something else

Faster to google TDP vs TGP...

TDP is a general term that can mean many things. For chips, it is typically the thermal design point for chip-only thermal requirements. TGP, or Total Graphics Power, is a more specific term for the power that a power supply should provide to the graphics subsystem, an add-in-card in most cases.
www.nvidia.com › GeForce › technologies › frameview
GeForce GPU Power Primer - Nvidia

Nablaoperator · 17 Oct 2020 at 21:48

Wrinkly said:
Faster to google TDP vs TGP...

So do you think the chip will be drawing more power than the graphics subsystem?

That 255w includes everything on board

I am lost.. are you in agreement with me?

Mr Oblong · 17 Oct 2020 at 21:50

Hedge said:
I'm happy enough to play anything over 30 if consistent for something like Final Fantasy 7. 60 + for most action games then higher better for Fps. But im quite happy if it's not jumping about.

Ive always been quite content though. I just find it funny seeing how the narrative shifts when 120fps+ is no longer possible.

Everyone was like omg a ps4 can only do 30fps. Puke puke! Now they have control doing 30fps with rtx on and they are pulling their plonkers.

Ha, there will always be hypocrites of course.

But VRR is another variable that can make lower refresh more tolerable.

Mr Oblong · 17 Oct 2020 at 21:50

PrincessFrosty said:

Haha yes, this is it.