Hmm, have avoided looking at pricing/availability since I bought mine.
The price looks about the same but only seem to have 5800x in stock, others on order with estimated shipping dates from over a week out, up to 8 March
Performance update my side: I've been messing with PBO settings & even Curve Optimiser more.
While absolute max speeds can be got with tweaking the 3 values to just above 100%, what I've seen quoted elsewhere & in practice feels best is just setting Auto OC profile with the PPT bumped from 76W default (for 5600X) to still quite low 85 or 95W, TDC/EDC on stock 60A & 90A respectively + boost limit set to 200Mhz max.
You get a good bit of extra all-core clock & it'll hit the 4850 single core limit reliably with minimal effort & minimal out-of-specness.
Curve Optimiser: its definitely good but seems to be tricky to find truly stable setting.
From various posts I've seen & my own experience instability seems to mostly come during low power usage eg while idle overnight unless you've set something silly like -25 all core.
eg With current beta AGESA v1.1.9.0 BIOS for my board -20 all core seemed like it was stable for over a day of various tests then my normal usage including overnight idle but then I fired up Passmark & it crashed part way through the tests, not on one of the CPU ones.
-15 all core I haven't managed to get to crash over a few days before/after the period with -20.
It does make a decent difference, some tests (eg CPU-Z Bench) hit over 4800Mhz all core on -20 vs ~4500 without, -15 gives more like 4650.
Without Curve Optimiser you see voltage occasionally hit or pass 1.5v to hit that 4850Mhz limit, with -15 CO it does it on about 1.4v.
Performance gain on this beta firmware eg Cinebench r23
Stock settings except XMP profile set in bios gives 1529/10706 (single/multicore)
Auto OC 200Mhz, 95/60/90 gives 1566/11462
add in -15 curve optimiser gives 1597/11686
-20 was 1578/11814
With -10 curve optimiser & Auto OC 200MHz, 115/65/125 I get 1590/11811
Arguably overall probably not a massive noticeable difference in real usage but I think not too bad for what boils down to turning on a couple of options & setting a couple of values.
Might even save power overall with curve optimiser also dropping voltage all along the curve & my usage including plenty of largly idle time.
I love how with my recent 5600XT & this new 5600X I can just sit on desktop with a couple of browsers open (way too many tabs), watching Youtube & faffing around on forums/news, with the GPU doing about 50Mhz, 25w & fan off while my CPU cores are idling down mostly in the low half of triple digit Mhz, some sleep time & ~40W package power