I have both a 12900K and a 12900KS in two Asus boards , a K in an Asus hero and the KS in an extreme board.
The K variant has an SP number of 82 , the KS has an SP number of 92, with 100 on the P cores, it’s clearly a better binned sample.
When I first plugged in the KS to the extreme board running the 702 bios it read an SP of 200!, then 96 on the first boot, then after a bios update to 1403 it dropped to 92 who knows why….
But it does run really well and peaks at 5.7Ghz regularly, usually sitting at between 5.3 and 5.5ghz constantly - on an AIO !
The KS will do also do 5.3GHz on all 8 cores stable and the strangest thing is that it never goes over 80 Degrees C, I’d heard these KS CPU’s are supposed to run really hot and I’m only using an NZXT Z63 280mm AIO. - it just doesn’t get hot at all, in fact I assumed I’d have to buy a better cooling solution but the Z63 more than copes really comfortably. I’m amazed and I’ve benched it hard as well.
As regards seeing a huge difference with a KS over a K variant then clearly you won’t really, it is a small increase and this is simply a halo product, nothing more it’s a “nice to have“ your not going to notice any fps increase gaming, you will notice it pulls a few more watts.
But if you like playing around overclocking for example as I do then the KS is certainly worth buying, simply because it’s a way better binned cpu to do it with.
if money is the issue for you then go with the K variant, you may get lucky and get a decent sample in the silicon lottery but I’m guessing most of the best binned chips are used for the KS now.
overall I’m happy with it, but I still also have my old 9900KS as well and having a wonderful example of the latest and best is a nice thing to have.
I also run a 3090 strix GPU and I can say I wasn’t at all tempted by the 3090ti like I was the KS over the K
for me the issue with the 3090ti is the insane power draw, I can tell you after several hours gaming I often end up sitting in my pants gaming as the room gets so very hot, so there is no way I’d ever go for the 3090ti gpu, unless they vastly improve the power draw I genuinely believe my next build will be an AMD build.
With European governments frankly taking the total piss with the price of electricity as well this has to be a consideration for all of us and Nvidia need to consider this very carefully moving forward or these draconian governments will legislate and do what they do best - ruin it for everyone.
As with any halo product there is a premium to pay and if 150usd is an issue for you - clearly don’t buy one - but don’t whine and get salty because others choose to do so.
It’s the very best cpu there is currently and like all top end kit, you pay for that halo badge
This clearly is a cpu made for those who want the very best , it isn’t “value” and if your whining about a days wages to pay for a cpu you’ll use for the next few years then clearly the 12600k or 12700k or an AMD 5800X 3D is the one for you and not the 12900KS, so leave it to us enthusiasts
That said I do love seeing the salty, mocking and clearly bitter comments about it , they do make me chuckle, I don’t understand how a cpu can upset you that much, just don’t buy it and move on