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One thing is certain: there will be a lot more heat to deal with, so it might also mean having a refridgerated chassis.
Fortunately I highly doubt it will get that far. Biggest block will be typical home circuits, in the US anyways. You won't be able to have some 1500-2000 watt beast going without someone turning something else on and popping the breaker.
You can undervolt this 4090ti and save a massive amount of power. Plus you would also save over $2000 versus the A6000.
That's all the A series really does anyway. They are undervolted compared to gaming cards, and have support for specific features (which Iray doesn't need).
Proving this point, the 3090ti was undervolted to 300 Watts (down from 450) and it only lost about 10% performance. So it was still a beast. Which BTW the A series also happens to be slower than gaming versions, too.
https://www.techspot.com/news/94153-rtx-3090-ti-set-300w-rtx-3080-ti.html
Maybe this card could handle a render wilth all Daz's collect the set Zodiac Warrior figures wearing their armour.
As far as saving for it, I'd need a new PC as well, This card has more RAM than I can put on my PC's motherboard. You'd need at least 96GBytes, but some people say you need three times as much as the VRAM, 144 GBytes. Do they even make motherboards that can take that much? The prospect of me ever having enough money for this was pretty remote even before energy and food prices started going through the roof in Britain.
...3090s have been dropping in price, finding some for under the original MSRP.
go to the play it forward thread
go to the pay it forward thread and hit up Agitated Riot
https://www.daz3d.com/forums/discussion/comment/7686331/#Comment_7686331
RAM is indeed another factor. I have written about this a few times, but Iray compresses nearly all textures by default. This is why you have a gap between RAM and VRAM used. The default settings are actually quite aggressive, more than most people realize. By default EVERY texture over 1024 pixels is compressed by Iray before it reaches the GPU. So...basically every texture on a modern Genesis, hair and outfit is compressed. Mesh data is NOT compressed. So the exact amount of RAM versus VRAM can vary wildly based on how your scene is created, along with the compression setting. You could for example have a lot of mesh geometry but few textures, or the opposite with lots of large textures but little geometry. Then the compression setting is the biggest factor in VRAM use.
If by chance you change the compression so that textures do not get compressed at all, you will find that your VRAM almost mirrors your RAM. I tried this just the other day for fun. I was at 20GB of RAM and 18GB of VRAM (I have a 3090), and that difference comes down to Windows using RAM to run itself. But I have also created scenes that used 50GB of RAM while using 11GB of VRAM. That's a 5x difference!
Windows Home caps at 128GB currently. Windows Pro caps at 2TB of RAM. So to truly make the best use of a GPU with 48GB of VRAM, you will likely need a Pro edition of Windows to go beyond 128GB.
Most DDR4 motherboards tend to cap at 128GB. New DDR5 motherboards can go up to 512GB. Of course server grade stuff can go higher, but so does the cost. So you would want a DDR5 motherboard, and you would want to verify that board can indeed handle the memory you desire to use.
DDR5 is still pretty new and as such it is still at a premium over DDR4. However this will change with time as DDR5 catches on. Prices for DDR5 have already dropped a lot over the past year. It is for the best, because the brand new Ryzen 7000 series chips are DDR5 only, so you will need DDR5 for these new CPUs when they release later this month. However the Ryzen 7000 CPUs all have a max 128GB RAM capacity, so it looks like you still need a server chip to go beyond 128.
And yes, 3090 prices are dropping fast. They will keep doing so. After all, if the 4070 is just as fast, the 3090 instantly loses value on that alone. The 4070 will have either 10 or 12GB of VRAM, which is enough for gaming tasks, and possibly some of you. The 4070 is likely a $500 to $600 card, so the 3090 has to be comparable to that price. Its 24GB will be its only redeeming feature, and while there are people who want that (like us,) there are way more gamers than us. So the 3090 could drop down to as low as $600 in the next few months on ebay, and even brand new prices will drop well below $1000. There was a EVGA 3090 for $960 this past weekend.
That is what I would watch out for. If the 4090 is beyond you, the 3090 will get you 24GB for much less.
...I'm looking at an LGA2011-V3 server board that can support up to 256GB but it's slightly older tech though has 8 DDR4 DIMMs and supports PCIe 4,0, which in turn will support the 30xx series.
Still running on 7 Pro here which caps at 192GB and has a minimal WDDM footprint on VRAM.
Yea, he hasn't done that yet. I checked he still has it and is getting his new card tomorrow.
I have a Quadro P6000 with 24 gigs and 256 gigs of ram. That should do me for a little while ;). Ain't in no hurry. LOL
3090 and 128 GB here. It works fine. The other day I had quite a few intensive programs open and only utilized 64 GB. Occasionally this might go up but I never ran out of system ram. I have however maxed out the 24 GB memory of the 3090 in Daz which then falls back to CPU usage. I am really interested in the rumored Titan RTX with 48 GB. For now I'll use Scene Optimizer or just render with the CPU if needed.