*** The AMD RDNA 4 Rumour Mill ***

[Stanners]

The Dons have been a bit slack on this thread

Have we ,how many posts have you rtm’ed. Each thread gets opposing views and it is a fine balance between deleting and letting it run its course.

 

[tommybhoy]

That's because the 4070 doesn't have the power to sustain a minimum of 60fps pre-FG (DLSS3), so the input latency is considerably higher and the experience is poorer. A minimum of a 4080 is necessary to mitigate this which would then result in a 60fps baseline at 1440p when path tracing, so a post-FG framerate of 90+ and input latency that's actually acceptable but not 100% perfect. Only a 4090 or above is capable of fully acceptable input latency with FG enabled on a path traced game at 1440p - That is of course unless DLSS upscaling is set to Performance. Before dll version 3.7, Performance mode at 1440p would introduce some signs of distance shimmering on specular highlights, this may not be the case any more but I haven't personally checked for this yet.

So if that 4070 can use DLSS Performance with tweaked settings and then get at least 60fps in CP with PT/RR (DLSS 3.5) enabled then the post-FG experience should be mostly excellent. Assuming dll version 3.7 is being used for FG, Upscaling and now RR (3.5) too.

The 4070 is the 1080p RTX solution, 4080@1440p, 4090@@k is the daddy

We've already discussed this somewhere when I pointed that your RTX experience is not representative of 407/ti/80(s) capabilities some time back as other 407/ti/80 users were claiming all sorts of omg FG fps is a gamechanger@1440p/4K and explained why-when it clearly can't in my son and my experience with the 4070*.



*Technically my 4070 can hit PT'ing@ 1440p but it's scene dependant so it isn't consistent enough for a smooth experience when the fps plummet.

 

[tommybhoy]

Have we ,how many posts have you rtm’ed. Each thread gets opposing views and it is a fine balance between deleting and letting it run its course.

Some of us don't bother RTM, but as @eeii and others have pointed out it's the RDNA 4 Rumour Mill, it's turned into another @mrks modded CP Screenshot YT thread.

 

[Calin Banc]

The 4070 is the 1080p RTX solution, 4080@1440p, 4090@@k is the daddy

We've already discussed this somewhere when I pointed that your RTX experience is not representative of 407/ti/80(s) capabilities some time back as other 407/ti/80 users were claiming all sorts of omg FG fps is a gamechanger@1440p/4K and explained why-when it clearly can't in my son and my experience with the 4070*.



*Technically my 4070 can hit PT'ing@ 1440p but it's scene dependant so it isn't consistent enough for a smooth experience when the fps plummet.

It depends what you're used to and what you can tolerate.

 

[queamin]

Latest rumour from where?

From Santa

 

[Grim5]

 

[AthlonXP1800]

AMD Radeon RX 8000 (RDNA4) GPUs rumored to use 18 Gbps GDDR6 memory - VideoCardz.com

Radeon RX 8000 rumors point towards slower GDDR6 memory According to respected hardware leaker Kepler_L2, the RDNA4 generation may be sticking to slower memory. Kepler was among the first to reveal that AMD is scrapping its plans for big Navi4 GPUs, and this information is slowly being...

videocardz.com

RDNA4 GPUs RX 8600 and RX 8700 will not feature GDDR7 but it will use same 18 Gbps GDDR6 memory featured on both RDNA3 GPUs RX 7600 and RX 7700.

Nvidia Blackwell RTX 5000 will be the only one that will use next generation GDDR7 memory.

 

[humbug]

AMD Radeon RX 8000 (RDNA4) GPUs rumored to use 18 Gbps GDDR6 memory - VideoCardz.com

Radeon RX 8000 rumors point towards slower GDDR6 memory According to respected hardware leaker Kepler_L2, the RDNA4 generation may be sticking to slower memory. Kepler was among the first to reveal that AMD is scrapping its plans for big Navi4 GPUs, and this information is slowly being...

videocardz.com

RDNA4 GPUs RX 8600 and RX 8700 will not feature GDDR7 but it will use same 18 Gbps GDDR6 memory featured on both RDNA3 GPUs RX 7600 and RX 7700.

Nvidia Blackwell RTX 5000 will be the only one that will use next generation GDDR7 memory.

18 GB/s? I get sticking with GDDR6 for now but 18 GB/s? up it to 21 if not 23, even the 7800 XT comes with 20 GB/s IC's.

 

[JediFragger]

18 GB/s? I get sticking with GDDR6 for now but 18 GB/s? up it to 21 if not 23, even the 7800 XT comes with 20 GB/s IC's.

They may have increased the size of the infinite cache tbf which would give limited gains in moving to a higher speed vRam. I guess it won't be too long before we find out

 

[Grim5]

that's being the point since rdna3, put budget into cache, and due to extra cache, get savings by using slow vram.

AMD must believe they can achieve the same performance with a lower cost by having cache with cheap memory

 

[CAT-THE-FIFTH]

I do wonder if the PS5 PRO is using Infinity Cache as the memory bandwidth increase is apparently not big compared to the PS5.

 

[humbug]

They may have increased the size of the infinite cache tbf which would give limited gains in moving to a higher speed vRam. I guess it won't be too long before we find out

Yeah but yucky... just put the faster memory IC's on it to give it that extra bit of kick, it might make all the difference.

 

[humbug]

that's being the point since rdna3, put budget into cache, and due to extra cache, get savings by using slow vram.

AMD must believe they can achieve the same performance with a lower cost by having cache with cheap memory

How much are they saving getting slower memory IC's? $1,40 per GPU?

 

[JediFragger]

Yeah but yucky... just put the faster memory IC's on it to give it that extra bit of kick, it might make all the difference.

Yup, AMD cards do gain a fair bit with a mem o/c usually.