RDNA 3 rumours Q3/4 2022

Chuk_Chuk · 19 Sep 2022 at 21:29

Bill Turnip said:
At what power draw is the key point though. A better process should help here, but was there any info on that?

Yeah, Lisa said they were on target to achieve their 50% improvement in performance per Watt

Angilion · 19 Sep 2022 at 21:46

Chuk_Chuk said:
Yeah, Lisa said they were on target to achieve their 50% improvement in performance per Watt

IIRC the stated improvement was up to over 50% improvement in performance per watt. If so, then all that would be required would be for one example. A single 7xxx card at stock giving 50%+ better performance per watt than a single heavily overclocked and overvolted 6xxx card would do. Not even necessarily a single case of the same level of performance at a much lower power draw. 40fps at 120W is a 50% higher performance per watt than 80fps at 360W.

I think there will be an overall improvement in performance per watt, including for comparable performance, but I'd be surprised if it was >50% improvement across the board.

Nexus18 · 19 Sep 2022 at 21:49

Angilion said:
IIRC the stated improvement was up to over 50% improvement in performance per watt. If so, then all that would be required would be for one example. A single 7xxx card at stock giving 50%+ better performance per watt than a single heavily overclocked and overvolted 6xxx card would do. Not even necessarily a single case of the same level of performance at a much lower power draw. 40fps at 120W is a 50% higher performance per watt than 80fps at 360W.

I think there will be an overall improvement in performance per watt, including for comparable performance, but I'd be surprised if it was >50% improvement across the board.

Well said. All these companies will use certain conditions to come up with these figures.

Chuk_Chuk · 19 Sep 2022 at 22:32

Angilion said:
IIRC the stated improvement was up to over 50% improvement in performance per watt. If so, then all that would be required would be for one example. A single 7xxx card at stock giving 50%+ better performance per watt than a single heavily overclocked and overvolted 6xxx card would do. Not even necessarily a single case of the same level of performance at a much lower power draw. 40fps at 120W is a 50% higher performance per watt than 80fps at 360W.

I think there will be an overall improvement in performance per watt, including for comparable performance, but I'd be surprised if it was >50% improvement across the board.

Just went back and checked she said over 50%.

Regarding your example it does not work because voltage curves (?) are not linear so the efficiency of the 360w card would increase as the voltage is reduced. It is widely accepted that you either test at the same wattage or you show the card achieving the same result with half the power.

Yes AMD could pull some shenanigans but they would be slated by everyone if they tried that.

Grim5 · 19 Sep 2022 at 22:39

Nvidia: Yes finally guys! we can do 3ghz on Lovelace like AMD

AMD: hold my 4ghz

https://twitter.com/x/status/1571834170900623360

nomadd · 19 Sep 2022 at 23:02

pete910 said:
To be honest I would'nt give a damn whether it was 4 Mhz or 4 Thz , If it don't perform it don't mean squat!

Er, OK then.

Joxeon · 19 Sep 2022 at 23:34

Chuk_Chuk said:
Just went back and checked she said over 50%.

Regarding your example it does not work because voltage curves (?) are not linear so the efficiency of the 360w card would increase as the voltage is reduced. It is widely accepted that you either test at the same wattage or you show the card achieving the same result with half the power.

Yes AMD could pull some shenanigans but they would be slated by everyone if they tried that.

I wouldn't get too excited just yet, don't forget RDNA2 was 65% performance per watt over RDNA1 according to AMD https://www.amd.com/en/technologies/rdna-2 yet comparing the 150w 5600XT to the 160w 6600XT the performance gain was only around 20% and let's not forget the price increased by 36%.

muon · 19 Sep 2022 at 23:45

It also doesn't work if you cut the number of CUs and up the clock speed to compensate.

The 6800 XT and 6900 XT have the same power consumption at stock.

The Ryzen 5900X and 5950X also have the same power consumption at stock.

philo-sofa · 19 Sep 2022 at 23:47

have they confirmed when release will be yet?

Joxeon · 19 Sep 2022 at 23:52

muon said:
It also doesn't work if you cut the number of CUs and up the clock speed to compensate.

The 6800 XT and 6900 XT have the same power consumption at stock.

The Ryzen 5900X and 5950X also have the same power consumption at stock.

Cutting the CUs and upping clock speed is a great way to increase profits though especially coupled with a price increase

muon · 19 Sep 2022 at 23:56

Joxeon said:
Cutting the CUs and upping clock speed is a great way to increase profits though especially coupled with a price increase

It is a fair thing to do. People don't actually care about power consumption (as much as they make out) as long as they can cool it.

Waste of silicon not to be pushing it into the less efficient range.

Tired9 · 20 Sep 2022 at 00:00

muon said:
It is a fair thing to do. People don't actually care about power consumption (as much as they make out) as long as they can cool it.

Waste of silicon not to be pushing it into the less efficient range.

Uhm, are you well off?
I think most of the UK are certainly worried my dude, well especially those who game for long hours, I don't but some do.

muon · 20 Sep 2022 at 00:02

Tired9 said:
Uhm, are you well off?
I think most of the UK are certainly worried my dude, well especially those who game for long hours, I don't but some do.

50-100W extra for a few hours a day is still nothing when you are dropping £500 on a graphics card.

Even if you somehow gamed 6 hours a day for 200 days a year, at +100W that is only +120 units of electricity.

Tired9 · 20 Sep 2022 at 00:03

muon said:
50-100W extra for a few hours a day is still nothing when you are dropping £500 on a graphics card.

250w max with a MAX OC on a 3070 vs 450+ on a 4070 is massive though.

humbug · 20 Sep 2022 at 00:04

Joxeon said:
I wouldn't get too excited just yet, don't forget RDNA2 was 65% performance per watt over RDNA1 according to AMD https://www.amd.com/en/technologies/rdna-2 yet comparing the 150w 5600XT to the 160w 6600XT the performance gain was only around 20% and let's not forget the price increased by 36%.

5700XT power consumption 219 Watts: performance 100%
6900XT power consumption 299 Watts: performance 201%

Source TPU.

299 / 219 = 1.36, the performance is 2.01. An efficiency difference of 65%.

101% more performance for 36% more power.

muon · 20 Sep 2022 at 00:05

Tired9 said:
250w max with a MAX OC on a 3070 vs 450+ on a 4070 is massive though.

That isn't really performance equivalent is it, if this discussion is about performance per watt.

Max OC anything isn't what AMD (or Nvidia) are selling or advertising.

RTX 4070 is also rumoured to be 285W. Not that outlandish number.

NVIDIA GeForce RTX 4070 Specs

NVIDIA AD104, 2475 MHz, 5888 Cores, 184 TMUs, 64 ROPs, 12288 MB GDDR6X, 1313 MHz, 192 bit

www.techpowerup.com

NVIDIA GeForce RTX 3070 Specs

NVIDIA GA104, 1725 MHz, 5888 Cores, 184 TMUs, 96 ROPs, 8192 MB GDDR6, 1750 MHz, 256 bit

www.techpowerup.com

Twinz · 20 Sep 2022 at 00:08

muon said:
It is a fair thing to do. People don't actually care about power consumption (as much as they make out) as long as they can cool it.

Waste of silicon not to be pushing it into the less efficient range.

It's the damn HEAT. Watts= heat. My sim rig with a 400+w 3080Ti requires a window-mount AC unit just for that room. Sure, I could turn down my central AC to compensate for all the heat dumped into that one room, but then my wife would get frozen out of every other room in the house.

Watts = heat.

muon · 20 Sep 2022 at 00:09

Twinz said:
It's the damn HEAT. Watts= heat. My sim rig with a 400+w 3080Ti requires a window-mount AC unit just for that room. Sure, I could turn down my central AC to compensate for all the heat dumped into that one room, but then my wife would get frozen out of every other room in the house.

Watts = heat.

Yet you bought a 3080 Ti at 350W stock. So did you care?

You could limit it's power if you wanted (it's what miners do to get optimal performance per watt, or people with SFF systems), but you won't do that either I suspect.

Tired9 · 20 Sep 2022 at 00:12

Twinz said:
It's the damn HEAT. Watts= heat. My sim rig with a 400+w 3080Ti requires a window-mount AC unit just for that room. Sure, I could turn down my central AC to compensate for all the heat dumped into that one room, but then my wife would get frozen out of every other room in the house.

Watts = heat.

I recall the 480 with an OC, 350 watts.. FORGET PLAYING IN SUMMER

Tired9 · 20 Sep 2022 at 00:12

My GPU changes my room temp already by 4c at max load and it is only 250w lol