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Certainly sounds like it might be a heat issue. Arm-chair diagnostics are notoriously unreliable though.
I'm waiting for DDR5 to finally come out for AMD, then it's a new Mobo, CPU, at LEAST 64GB DDR5, and a 1.6kW PSU...
I've got a pile of 8GB DIMMs sitting on a bookshelf. Seeing as most computers only have two slots, they're probably going to rot up there.
Not really, only crap-tiered prebuilds/specialty motherboards have only 2 DIMM slots, the majority of motherboards have at least 4, not including thread ripper motherboards that have at least 8!
You just need to upgrade your motherboard, and other components depending on how ancient your computer might be... If you have a Dell, then you're out of luck as Dell mostly uses proprietary parts, which is why it's such a piece of crap as you cannot upgrade a Dell!
Do you think there's any benefit to getting 3600 mhz over 3200 mhz RAM speed for rendering? I've read that it makes only a very slight difference in performance for gaming, but I haven't found any details about how it might affect rendering. I know that GPU speed and VRAM matters more, just wondering about RAM. Thanks.
I found YT videos that indicate RAM speed makes no difference to 3D rendering because RAM speed is not the bottleneck. These videos are not very exciting, but at least they're informative. Videos are set to start at the point where they talk about rendering, but that appears not to work here, maybe on YT? No, apparently not. I entered times and links without prefixes to the text and you can manually copy/paste the links. That works.
Go to 8:59: youtu.be/vjbNhCHwlBo?t=539
Go to 10:27 youtu.be/uy6dgB24frg?t=627
And why do you need 128 GB of system ram for a 3090 with 24 GB of Vram again?
As I understand it, Daz can occupy up to 4GB system ram per 1GB VRAM. If you have a 24GB card and using all 24GB, you can occupy up to 96 GB system RAM. Thus, at least 96GB. And if you want the RAM to work in multiple channels, you need 128 GB system RAM. To that end, I have 64GB RAM to support a 12GB graphics card.
Hmmm...
I'm guessing the Genesis 8 models eat up a lot of memory?
I didn't bother with that model so maybe that's why I don't have any issues.
It's true that having more RAM is usually better than having faster RAM. The real bottleneck can be in the computer's memory bus that controls how fast the RAM can run (note: If you double the memory bus, you also double the memory bandwidth). So, check your motherboard to see what the maximum memory module speed it's rated for (i.e. DDR4 RAM at 3600MHz vs. DDR4 RAM at 2400MHz, etc.). NOTE: If you match different RAM DIMMs in your computer, the system will clock down to match the slowest memory module, so it's best to buy RAM DIMMs in pairs (i.e. matched sets).
Most current high-end desktop PCs with an Intel Core i9 processor have a maximum memory bandwidth of around 77GB/s. Compare that to the latest Apple M1 Ultra Studio computers that feature 800GB/s memory bandwidth and up to 128GB Unified Memory. That's 10x faster memory bandwidth than a PC. Since Macs running Daz Studio and rendering in iRay have to rely on the CPU and RAM for rendering, the amount of RAM and the speed are a bit more important considerations than on a PC with a dedicated GPU with VRAM for iRay.
It's a rough rule, but the scene in working memory will take about as much memory as the scene in MDL for Iray (they are not bound to be the same as they contain different things) - you need enough RAM for the working scene and the data that is to be sent on to Iray in each GPU. But it is a very rough rule.
I went with the rule. I expect the extra memory may prove useful for other tasks. We shall see!
Mine is rated for DDR4 at 5600 I think, so that isn't a problem.
Now this is a surprise, I just bought my Intel i9-10900 last year and it says it supports two-channel DDR4-2933. It's already outdated? Am I understanding these numbers correctly and it won't matter which of those two I buy as long as they're compatible with the motherboard?
Also, thanks Torquinox for those video links.
What kind of cooling solutions do you have for the CPU & video card? This is my system:
AMD Ryzen Threadripper 3960X 24-core 3.80 GHz (cooling is an Asus Ryujin 360)
128 GB Trident Z Royal
Sabrent Rocket 4.0 2TB NVMe PCIe SSD
Samsung SSD 870 QVO 4 TB SSD
EVGA Kingpin RTX 3090 (Studio Drivers)
Lenovo RTX A6000 (Studio Drivers)
So far I've been strictly using the A6000 to render, and it gets up to 85C. No crashes or anything like that. I haven't tried rendering off of the CPU yet. As I said before, the A6000 gets quite toasty, but the 3090 stays around 45-56C when gaming.
The case is Lian Li O11DXL-X O11 Dynamic XL ROG Certified with the fan setup as follows:
3x 120mm fans as bottom intakes, 3x 120mm fans as side intakes for the Ryujin radiator, 3x 120mm fans for the Kingpin radiator as exhaust out the top of the case, and 1x 120mm fan for rear exhaust. All are Coolermaster except for the Kingpin radiator, which uses the fans that came with it. So far, the only problem I've had with temps is the room getting too warm(seen it as high as 81F while rendering if I don't open the window and use a fan to pull the warm air out the window).
@SnowSultan Your 10th-gen system is a fairly recent configuration, so it should last you a long time. Make sure you take advantage of that dual-channel DDR4 feature your motherboard supports. You should have pairs of matching 2-channel memory slots. Make sure you put matched sets of DDR4 in them (i.e. identical memory sticks).
Here are the Memory Specification for the latest Intel 12th-gen (Alder Lake) i9-12900k:
Max Memory Size (dependent on memory type): 128 GB
Memory Types: Up to DDR5 4800 MT/s
Up to DDR4 3200 MT/s
Max # of Memory Channels: 2
Max Memory Bandwidth: 76.8 GB/s
Source: https://www.intel.com/content/www/us/en/products/sku/134599/intel-core-i912900k-processor-30m-cache-up-to-5-20-ghz/specifications.html
How much more memory bandwidth will DDR5 give me?
RAM manufacturer Micron said it’s seeing a 36 percent increase in bandwidth with a DDR5 module vs. a DDR4 module at the same data transfer rate of 3200 MT/s. A DDR5/4800 module Micron tested would offer an 87 percent increase in performance against a similar DDR4/3200 module.
https://www.pcworld.com/article/395107/what-is-ddr5.html
And this is a little concerning (in regards to Intel's new Gear 4 mode):
Alder Lake Tested With DDR5-6400 Memory, Has Unexpectedly High Latency
Gear 4 is good for extremely high memory speeds, but may be terrible for gaming.
A new Alder Lake benchmark has been posted with a for sale listing, potentially showing Alder Lake running in its new Gear 4 mode. According to @harukaze5719, this latest leak comprised a Core i5-12600K 10-core CPU running the AIDA64 cache & memory test, with a kit of DDR5 memory operating at DDR5-6400. Memory bandwidth was impressive at around 88-90GBps. However, memory latency took a huge hit, running at a sluggish 92.5ns.
Source: https://www.tomshardware.com/news/gear-4-mode-tested-on-alder-lake
I'd go for 128GB or even 256GB, not more, but really, I don't have the organizational skills to build a scene that would take more than 64GB without that scene being an overdetailed, overcluttered & overwrought mess; maybe for a teenage boy's room, a woman's purse, or similar comedy effects.
Glad to help!