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- Oct 6, 2023
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Processor | AMD Ryzen 9 7950X |
---|---|
Motherboard | ASUS ROG Crosshair X670E Hero |
Cooling | NZXT Z73 RGB |
Memory | 64GB G.Skill Trident Z RGB DDR5 6200MT/s CL30 |
Video Card(s) | Zotac NVIDIA RTX 4090 Trinity |
Storage | 2TB Samsung 990 Pro M.2 SSD + 15.36TB Micron 9300 Pro U.2 SSD |
Display(s) | LG C9 UHD 120Hz OLED TV |
Case | Lian Li O11D XL ROG |
Audio Device(s) | Denon AVR + 5.1 Setup |
Power Supply | Corsair HX1000i |
Mouse | Logitech G903 |
Keyboard | ASUS ROG Strix Flare |
Developers can access the full bandwidth at any time. Even on a PC the CPU doesn't need that much bandwidth, thats why CPUs come only with 2x 32bit memory controllers.Well I do work on those kind of memory buses so yes, if a memory bus is shared between several devices, depending on the access cycles there will be some memory controllers (usually it's divided into 32b controllers) that will be fully parked by the CPU while the GPU is working. I guess some game engine might be able to share the usage smoothly but it's definitely not full bandwidth for the GPU all the time.
"Close to/slightly behind the 7800XT in rasterization" Then how do you explain the dev of the PS5 himself said "up to 45% compared to previous gen" and not 75% ??
"You're the one who keeps saying the PS5 GPU is ~RX6700," This is from the numbers given here in the TPU database. Check the links in my original message. Given the actual in game perfs it's seems quite likely even.
Up to 45% is probably because not everything in the graphics pipeline was increased by 67% like they did with the core count, who knows, its anybody's guess until they clarify their testing methodology.
We had two leaks on the PS5 Pro specs which turned out to be correct, they are:-
First leak said the GPU is 33.5TFLOPs which makes the GPU 60CU @ 2.18 GHz, 50 MHz lower than the PS5 <== my guess is that they're unlikely to drop the clockspeed to maintain compatibility with non-patched PS5 games.
Second leak said the GPU actually can boost to 36TFLOPs so that puts the GPU 60CU @ 2.344 GHz <== more likely accurate since the PS5 Pro has a boost mode, if it works like how the boost mode on the PS4 Pro did, it bumps up the GPU clock slightly to boost frames.
7800XT = 60CU @ 2.43 GHz with 19 Gbps VRAM.
PS5Pro = 60CU @ 2.344 GHz with 18 Gbps shared VRAM.
Not much behind the 7800XT, at least on paper.