AMD RDNA 4 thread

Troezar · 27 Nov 2023 at 11:58

Phixsator said:
Had a HD5850, solid GPU. Had 2 7950 in crossfire.. that was a mistake specially when I could only pair them with a FX8350(although at 5,1ghz) because my i7 920 died. Room was a bloody furnace and performance was lacking a lot but that wasn't the GPUs fault hehe. Girlfriend always stayed away from my cave due to the heat .

I had two 7970 GHz that nearly gave me heatstroke a few times :cry:

labbby · 27 Nov 2023 at 12:00

i had 2 7990's in crossfire. think i needed a 1500w psu but I didn't need to put the heating on during the winter. :cry:

Apex · 27 Nov 2023 at 12:04

Ah the good old days when the PCMR was widely afflicted by "hot leg".

Phixsator · 27 Nov 2023 at 16:08

Troezar said:
I had two 7970 GHz that nearly gave me heatstroke a few times

That is how you figured out who was the real nerd and who was just a pretender. Real nerds didn't let a bit of heat get in the way of a good bench session!

Troezar · 27 Nov 2023 at 17:49

Phixsator said:
That is how you figured out who was the real nerd and who was just a pretender. Real nerds didn't let a bit of heat get in the way of a good bench session!

You can't fight the physics

Gerard · 27 Nov 2023 at 23:58

labbby said:
i had 2 7990's in crossfire. think i needed a 1500w psu but I didn't need to put the heating on during the winter.

MY 7990 I loved to hate, that card ran like a furnace despite amd's claims that "they cherry picked the best of the low voltage 7970 cores", and they even had a video claiming that the cooler made it run cool and quiet. Mine routinely hit upwards of 95c plus with the fans howling. And that seemed to be the general user experience with those cards, unless you undervolted the crap out of it the card just ran hot.

I often think that the cherry picking of low voltage cores was a short term thing, they didn't have enough and started using any 7970 core they could to build the cards. How do you go from all this "whisper quiet" spiel to the equivalent of a vacuum cleaner in your case?

eeii · 29 Nov 2023 at 12:51

My vega 64 even with aggressive undervolting sounded like a jumbo jet taking off. I still think the QA department had shares in noise cancelling headphone manufacturers.

JediFragger · 29 Nov 2023 at 17:03

The max size this is gonna be is 300mm sq. so I wouldn't be getting your hopes up on performance. The real juicy chips may come in RDNA 3.5 guise, hopefully they've fixed the massive power consumption by then!

Troezar · 30 Nov 2023 at 08:10

JediFragger said:
The max size this is gonna be is 300mm sq. so I wouldn't be getting your hopes up on performance. The real juicy chips may come in RDNA 3.5 guise, hopefully they've fixed the massive power consumption by then!

A lower power faster replacement for a 6950XT would be nice.

JediFragger · 30 Nov 2023 at 08:41

Troezar said:
A lower power faster replacement for a 6950XT would be nice.

I would say that's about the level to expect.

Troezar · 30 Nov 2023 at 08:59

JediFragger said:
I would say that's about the level to expect.

It seems we've hit a point where we have as much rasterization as we can use. May be a period of pushing that performance further down the stack, not too much need for it at the top end and the high end is never the volume seller.

GhostDog1981 · 3 Dec 2023 at 10:30

Troezar said:
It seems we've hit a point where we have as much rasterization as we can use. May be a period of pushing that performance further down the stack, not too much need for it at the top end and the high end is never the volume seller.

So best we can expect is a hyper efficient 7900XTX rebadged as a 8700XT?

humbug · 3 Dec 2023 at 10:53

GhostDog1981 said:
So best we can expect is a hyper efficient 7900XTX rebadged as a 8700XT?

They have done it before, AMD bowed out of the high end a few years ago, the RX 480 / 580.

One cannot sustain 8 different GPU tiers consisting of multiple die sizes and PCB designs with a market share of 15%, and above $500 people default to Nvidia.

CAT-THE-FIFTH · 3 Dec 2023 at 11:37

humbug said:
They have done it before, AMD bowed out of the high end a few years ago, the RX 480 / 580.

One cannot sustain 8 different GPU tiers consisting of multiple die sizes and PCB designs with a market share of 15%, and above $500 people default to Nvidia.

I would rather they concentrate on the mainstream,instead of spreading themselves too thin. Also they simply have more chance of getting mainstream cards into prebuilt laptops,desktops,etc which is what they need to be concentrating on.

humbug · 3 Dec 2023 at 11:40

CAT-THE-FIFTH said:
I would rather they concentrate on the mainstream,instead of spreading themselves too thin.

I agree, AMD were at their best when they didn't try to compete at the high end, its no loss anyway as people default to Nvidia at the high end.

humbug · 3 Dec 2023 at 11:52

You may disagree but i really like the 7800XT, i know its no better than the 6800XT, really. but i think its a very good GPU and well priced at $500.

Its a much better GPU than the 4070, that's for sure... and with AIB coolers they all seem to clock high, gaining 15 to 20% in real terms performance to put them up with the 4070Ti, an £800 GPU.

Great cards....

Zarax · 3 Dec 2023 at 12:18

humbug said:
You may disagree but i really like the 7800XT, i know its no better than the 6800XT, really. but i think its a very good GPU and well priced at $500.

Its a much better GPU than the 4070, that's for sure... and with AIB coolers they all seem to clock high, gaining 15 to 20% in real terms performance to put them up with the 4070Ti, an £800 GPU.

Great cards....

IMHO the RX 7900 GRE is the unsung hero of the crop, you get RX6950XT performance at a much lower TDP.

Apex · 3 Dec 2023 at 13:43

Not settling until I can get 7900XT level performance and specs for under £500. I've a feeling i'm going to be waiting a long while, but I'm not going to budge on that. Like my AM4 system, I'm going to sit on my 6700XT and see what can be done with upscaling tech.

RBImGuy · 3 Dec 2023 at 16:34

humbug said:
They have done it before, AMD bowed out of the high end a few years ago, the RX 480 / 580.

One cannot sustain 8 different GPU tiers consisting of multiple die sizes and PCB designs with a market share of 15%, and above $500 people default to Nvidia.

depends what markets as some amd sells 50%

rdna4 will be interesting though

Freddie1980 · 7 Dec 2023 at 09:19

humbug said:
They have done it before, AMD bowed out of the high end a few years ago, the RX 480 / 580.

One cannot sustain 8 different GPU tiers consisting of multiple die sizes and PCB designs with a market share of 15%, and above $500 people default to Nvidia.

I have an hunch that AMD's market share could see a sizeable jump in market share over the next few months judging by the anecdotal reports coming out of China.

RBImGuy said:
rdna4 will be interesting though

I doubt it. Every AMD GPU launch since 2015 has been underwhelming, sure RDNA has gone a long way to fix AMD's woeful performance per watt issue during the Vega days but performance just hasn't been there and they never push the envelope in terms of how much silicon we get for a £ notes.