im sure 9900k is better than any 3900x 3950x 3970x in terms of gaming. so getting 3950x is not an upgrade its downgrade to be more precise
I agree with this, unless youre going to be doing activities outside of gaming that require the extra power, i cant see any point in doing an upgrade to any of the Zen 2 Ryzen chips, they all fall roughly 5% behind the intel in gaming. IF you do CPU intensive activites away from gaming then yeah its a no brianer the Ryzen is the better card.
Just a heads up, SLI scaling is terrible, very few games actually take advantage of it in any meaningful way, while some actual do worse with it on. The consensus about SLI, skip it, its not worth the money.
I disagree with this, for SLI (NVlink) supported games ive seen 60% improvements in frame rates, SLI prior to the RTX release was dead no debating that, because of the massive limit on the bandwidth of the bridge, with NVlink coming to standard consumer cards (still refered to SLI in games though) the bandwidth is about 15x (dont quote me on that i just remember 2GB/s vs 35GB/s) hence the ability for SLI is now somewhat pratical, and will no doubt be used by alot more game makers. Not to mention 4k usually sees the best scaling on gaming, its game to game dependent for example Shadow of the tomb raider goes form 61 FPS to 102FPS @4K
With many games, do the research. There's multiple vids and reviews, tweaks and settings optimizes etc showing that Max isn't all it's cracked up to be. There's many occasions where setting certain max on clouds is next to useless visually, you really can't see the difference, but it's a considerable drain on gpu resources compared to medium. It's not uncommon to see a 20-30fps or better increase by lowering certain settings, that you'll not see visually.
Once again this is now, theres been plenty of test of games optimising for SLI getting 60% increases, the amount of reviews that use games that arent formally optismised for SLI is rediculious. And with NVlink most are predicting better and better scaling in games as game makers start to really utilise it for their games.
Essesntially with Nvidia giving us NVlink tech there is a greater possiblity for SLI to function at greater scaling rates, youll never see perfect scaling, so youll never see your value for money, but if youre running two 2080ti cards i doubt thats an issue. This is a massively debated topic, so id suggest forming your own opinion on the worth of SLI, find an updated list of supported and optimisied games and then look for benchmarks in those games. Make sure youre setup will work for a second card, do you have enough spacing so you can leave a gap between the cards so they can cool propely, unless you have a custom loop one card will always run about 10 degrees higher due to limited airflow, so make sure your current card isnt running hot as it is, 1000w is about the minimum for a psu for that setup, overclooking on it could cause issues, i know 1080ti sli systems with lesser cpus were comfortably pulling 900w so be careful with that, but you should be ok with minor OCs.
Heres a website to get you started... Remeber to ONLY look at places testing on a 4K setup thats crucial
https://www.legitreviews.com/nvidia-geforce-rtx-2080-ti-sli-review-with-nvlink_208222
Oh and to answer the original question which has disappeared from this threads direction, no it wont double your useage from the CPU, thats not how SLI works, you might see a slight CPU usage increase, but its 100% not something you even need to think about, hence why this thread has turned into a should you or shouldnt you spend the money on another 2080ti.
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