Recon801

I'm planning on buying a 3090, I'll explain. If you think I'm making a poor move here please let me know. I am obviously making some assumptions, please recognize that I have been in the tech space for many years and are making these assumptions based on what I have seen in the past. I do not shy from criticism, so please let me know if you think I've missed something.   I currently have sli 980ti, overclocked to 1400mhz (40% OC). While many people claim that "sli is dead" my experience is quite the opposite. Essentially every major game release supports sli. On average I get 60-70% scaling, but I do get 95-100% scaling on some games such as Ark Survival Evolved. While some titles don't support sli, my experience is those are games that are so basic that you wouldn't need the extra performance anyway. For reference, my sli 980ti slightly outperform a single 2080ti.   Now that I've skipped the 10 and 20 series, I am ready to upgrade. I would like to purchase a graphics setup that will last me until the theoretical 50 series at a minimum, but really the 60 series. While the 3080 is a good purchase, I would argue that it's actually a mistake in the long run. In the last 2 years, games have begun to dramatically increase their demand for vram. It is quite common that games use 6-9gb. In 2 years when the 40 series drops the 3080 will probably still keep up, but by the 50 series you will be in need of an upgrade. (i assume most enthusiast are no longer using 1080p, if you are, please do not buy a 3090)   Performance: If 3080= 1 point of performance, we'll say a 3090 is 1.15 (I'm expecting 15%, the 10% leak is questionable at best) At assumed 65% sli scaling, a 2nd 3090 yields total performance of 1.15+0.75 = 1.9 with 24gb of vram   A typical gpu generation yields a performance improvement of 25%. (The 30 series appears to be higher yes, but the 20 series was also lower.) 3080=1.0 performance, 4080=1.25 performance, 5080=1.56, 6080=1.95 performance (with each generation yielding 25% improvement upon the previous)   Video Memory: (I make assumptions here based on past product releases) gtx780=3gb vram, gtx980=4gb vram, gtx1080=8gb vram, rtx2080=8gb vram, rtx3080=10gb vram, rtx4080=16gb vram, rtx5080=16/18gb vram, rtx6080=20/24gb vram   Price: (I make assumptions, given that most cards are AIBs selling at $100-200 above msrp already I think these are within reason.) gtx780=$650, gtx980=$550, gtx1080=$600, rtx2080FE=$700, rtx3080=$700, rtx4080=$700, rtx5080=$800, rtx6080=$800   Comparison at 50series release in 2024/2025: A) 3090 now, with sli upgrade: performance 1.9 with 24gb vram - -Total Cost: $1,900 (Better performance per dollar, still more vram) B) 3080 now, with 5080 upgrade: performance 1.56 with 16-18gb vram - -Total Cost: $1,500   Comparison at 60series release in 2026/2027:
A) 3090 now, with sli upgrade: performance 1.9 with 24gb vram - -Total Cost: $1,900 (Better performance per dollar, more or equal amount of vram)
B) 3080 now, with 4080or5080 upgrade, and then 6080 upgrade: performance 1.95 with 20/24gb vram - -Total Cost: $2,100-2,200 ----A 3080 stands no chance of lasting until the 60series on its own. A single of my 980ti certainly couldn't have lasted this long. I game at 2k, and will likely upgrade to 4k at some point in the next couple of years. sli 3090s could last until 2026, a 3080 could not, and you would need to upgrade in between. This is why Nvidia took sli away on the 3080 and limited the vram to 10gb. They know you will have to upgrade, rather than buying another of the same cards and simply sli when you need a bump in performance.   Anyway these are my thoughts. A mouthful to be sure. Thanks for reading.

Intel stated that quad-channel mode is enabled when "four (or a multiple of four) DIMMs are identical in capacity and speed, and are put in quad-channel slots".
 
In this case, if you want to have 16+32 GB quad channel memory, you need to install the 4x4 kit in slot A1/B1/C1/D1 and the 4x8 kit in slot A2/B2/C2/D2 (vice versa). The different slots are usually color-coded separately so it's easy to distinguish.
 
Keep in mind that memory compatibility differs from board to board, module to module, your mileage may vary. They should be able to operate at an overlapping rated speed by default.

So, if you actually want to clear any issues or glitches we have to do a restart. A shutdown and coming back later wont fix the issue