Thursday, August 3rd 2023
PowerColor AMD Radeon RX 7800 XT Pictured, Confirmed Based on "Navi 32"
PowerColor inadvertently released the first pictures of its AMD Radeon RX 7800 XT Red Devil graphics card. These pictures confirm that the RX 7800 XT is based on a maxed out version of the "Navi 32" GPU, and not the compact "Navi 31" powering the limited edition RX 7900 GRE. The "Navi 32" is a chiplet-based GPU, just like the "Navi 31," albeit smaller. Its 5 nm GCD (graphics compute die) physically features 60 RDNA3 compute units, which work out to 3,840 stream processors, 120 AI accelerators, 60 Ray accelerators, 192 TMUs, and possibly 128 ROPs. This GCD is surrounded by four 6 nm MCDs (memory cache dies), which each has a 16 MB segment of the GPU's 64 MB Infinity Cache memory, and make up its 256-bit GDDR6 memory interface.
The specs sheet put out by PowerColor confirms that the RX 7800 XT maxes out the "Navi 32," enabling all 60 CUs, and the chip's full 256-bit memory interface, to drive 16 GB of memory. The RX 7800 XT uses 18 Gbps memory speed, and hence has 576 GB/s of memory bandwidth at its disposal. The PowerColor RX 7800 XT Red Devil has dual-BIOS, and assuming the "standard/silent" BIOS runs the card at AMD reference clock speeds, we're looking at Game clocks of 2210 MHz, and 2565 MHz boost. The Red Devil draws power from a dual 8-pin PCIe power connector set up (375 W max); the cooler is visibly smaller than the one on the company's RX 7900 series Red Devil cards. A 16+2 phase VRM powers the card. With pictures of the card out, we expect a global product launch within the next 30 days.
Source:
VideoCardz
The specs sheet put out by PowerColor confirms that the RX 7800 XT maxes out the "Navi 32," enabling all 60 CUs, and the chip's full 256-bit memory interface, to drive 16 GB of memory. The RX 7800 XT uses 18 Gbps memory speed, and hence has 576 GB/s of memory bandwidth at its disposal. The PowerColor RX 7800 XT Red Devil has dual-BIOS, and assuming the "standard/silent" BIOS runs the card at AMD reference clock speeds, we're looking at Game clocks of 2210 MHz, and 2565 MHz boost. The Red Devil draws power from a dual 8-pin PCIe power connector set up (375 W max); the cooler is visibly smaller than the one on the company's RX 7900 series Red Devil cards. A 16+2 phase VRM powers the card. With pictures of the card out, we expect a global product launch within the next 30 days.
91 Comments on PowerColor AMD Radeon RX 7800 XT Pictured, Confirmed Based on "Navi 32"
Looks like it's going to perform worse than a 6800XT IMO. It's only clocked 9% faster than the 6800XT, but the 6800XT has 20% more shaders AND twice the InfinityCache. Given the lack of cache on the 7800XT I doubt the change to 18Gbps GDDR6 will be anything other than a downgrade, too. We've seen from the RX7600 that in terms of architecture, the move to RDNA3 yields very little IPC. Realistically, all RDNA3 means for performance is that you get an improved media engine with a hardware AV1 encoder...
Most likely it sits between the 6800 and 6800XT in terms of performance, and any efficiency advantage gained from using TSMC5 is wasted on higher clocks and the higher idle power draw of running five seperate dies and an interconnecting substrate.
It's going to be competing with the 4070, but it won't be as fast as the 4070, it won't have the raytracing performance of the 4070, it won't have the efficiency of the 4070, and it won't have CUDA application support of the 4070. The only reason it'll look good at all is because the 4060 Ti 16GB is a disgrace at $500.
Is this a mid range killer sale? Of course not, but its certainly competitive 'enough'. And still a lot better than anything that's a green x70 - even the x70ti carries a mere 504GB/s on 12GB, but is more expensive.
edit: if you didn't notice, I love outer space stuff... lmao
Considering AMD's recent past of bad pricing, I think they'll ask €550 for this and at that price it's a bad product IMO.
The industry shipped 42 percent fewer discrete GPUs than a year prior.
Demand for graphics cards significantly increased during the pandemic as some people spent more time at home playing games, whereas others tried to mine Ethereum to get some cash. But it looks like now that the world has re-opened and Ethereum mining on GPUs is dead, demand for desktop discrete GPUs has dropped dramatically. In fact, shipments of discrete graphics cards hit a ~20-year low in Q3 2022, according to data from Jon Peddie Research.
www.tomshardware.com/news/sales-of-desktop-graphics-cards-hit-20-year-low
Even Nvidia used same memory chips on 4070 as 4090. This will be barely faster than 6800xt
See, the problem is, these promos and sales to further compound the world's lowest prices for tech in America don't really apply anywhere else, you can be guaranteed that prices abroad will at the very least exceed US dollar MSRP valueCost. 4070 and 4090 carry over the 3090 Ti's 21 Gbps memory, the 4080 is the only card which adopts the fastest 24 Gbps ICs right now.
AMD is just saving pennies here with slower memory
GPUs are not the only thing where companies are desperate to hold onto those COVID profits. Something has GOT to give, and that will either be the corporations or the consumers. Time will tell who wins.
Given the fact 100% of Navi 31 is not faster than 50ish % of Ada we might assume 64% of Navi 31 is not faster than 35ish % of Ada and guess what? That's exactly where 4060... excuse me, "4070" has landed. 7800 XT needs BOTH a faster die and a faster VRAM. +11% VRAM b/w is undoubtedly good but it won't make a difference as it's still gonna be a very mediocre product, probably majorly overpriced as well.
But yeah, I hope that the pricing is moderate or they will have some cheaper SKUs at least. Nothing serious to complain about my current 6700 XT, but as I play at 4K, more horsepower would be nice..
To make matters worse, at 2 to 4% over the 6650 XT, the fully enabled Navi 33 silicon, otherwise RX 7600 XT, performed so bad, they actually released it as the RX 7600 in an attempt to compare it to its cut-down predecessor (the 6600), and still had to issue a flurry of last-minute price cuts to result in a GPU which is still a poor performer offering poor value for the price asked.
It's sad to say but, AMD just isn't at a great spot right now. Their product stack is a complete mess, and market realities may not allow them to undercut prices at the given SKU levels without actually damaging their brand, even if the hardware BoM could fit in a lower target (it cannot).