For the low, low price of $285 🤣.

Anyway, here are pics from the listing:

As it is from China, I wonder if it is just has a remarked/replaced IHS or if it is the real deal.

Maybe they just built it in very few numbers.. never even seen a K6-3+ myself from real.. I only have the K6-2+ 550Mhz and it wasn't easy too. Still I ran a 4.x kernel based linux onto it and it even worked the ondemand multiplier for the clock going automatically down to 200Mhz I think to remember. With a well supported Radeon card, all the accelerations enabled and a SSD plus a PCI Sata card, it was slow but usable.

50 units sold this year in a group buy on CPU-World for 60 euro each. I suspect you'll start seeing these CPUs appear on eBay at a substantial markup.

At this rate, I really wonder how rare did the K6-2 + have become. Most of the K6-2s I've had were standard 500MHz part, and only recently I've had the pleasure of owning a plus variant.

386SX wrote on 2016-12-11, 13:53:

feipoa wrote:

I am not sure. Perhaps an extraordinary cherry pick of the K6-III-450 series, or one of their last production runs with superior wafers and all the production issues worked out?

Well, considering how hot the original K6-3 400 ran in my tests at 2,4v to be stable... well.. some really lucky production I'd say. 😁
Probably I'd say that it was the + core version.

You had very bad luck with yours. I have my K6-3 400 AHX from week 13 of 1999, running at 450MHz with the same stock 2.4vcore. I have applied MX4 paste in all the heatsink. with thin, perfect contact. Prime 95 FFT stable

This one

download/file.php?id=125168&mode=view
download/file.php?id=125172&mode=view

See my posts for how I over-clocked K6-III+450 CPU to 500mhz and 550mhz using stock 2.0v Settings.
Works fine and runs very stable.

AMD K6-III+@500mhz
AMD K6-lll+@500mhz., Voodoo 3000 (desktop)

AMD K6-III+@550mhz.
AMD K6-III+@550mhz., Voodoo-3 / 3DFX / MMX / 3D Now (tower)

"Brand new" AMD-K6-III+/400ATZs can be bought from ebay for 88$/80€. That cpu can be overlocked easily to 500-550.

550 for sure. With some luck @600 or higher.

I've got this 500, I don't know if it's real, I've never tried to run it.

PcBytes wrote on 2021-12-07, 18:51:

At this rate, I really wonder how rare did the K6-2 + have become. Most of the K6-2s I've had were standard 500MHz part, and only recently I've had the pleasure of owning a plus variant.

the k6 2+ 570 isn’t even remotely rare. There is a guy on ebay that has thousands of them.

feipoa wrote on 2021-12-07, 18:10:

50 units sold this year in a group buy on CPU-World for 60 euro each. I suspect you'll start seeing these CPUs appear on eBay at a substantial markup.

Crap, wish I was able to snag one 🙁 (another)

I paid $35 each for my NEW K6-III+@450 a few years ago. Prices have sure gone up.

In the late 90s and early 2000s, I remember the K6-2 being pretty popular, but I did not know a single person that owned a II+/III/III+ in a desktop system. I get the feeling they were more popular in laptops (but I didn't know anyone that had one of those either). Back then I wanted a K6 III as an upgrade, but I remember them being expensive enough not to be worth the trouble. I think they were pretty hard for AMD to produce in volume, so it kept prices high.

It's actually kind of surprising how many K6 II+ chips you can find on eBay considering they weren't really that popular when new. I suspect AMD must have had stockpiles of them that went unsold, kind of like the NIB POD83s that used to flood eBay.

I had an AMD K6-2 build around 1997 that was always crashing. I must have had wrong components , ram, or jumper setting. But it never worked right.
So I ended up switching back to Intel CPUs and Never looked back.
But I do remember the AMD K6-III CPU being released. I remember sending AMD an email and asking them for a computer case badge and they sent me some.

Intel486dx33 wrote on 2021-12-08, 03:46:

I had an AMD K6-2 build around 1997 that was always crashing. I must have had wrong components , ram, or jumper setting. But it never worked right.
So I ended up switching back to Intel CPUs and Never looked back.

My experience was pretty similar. But, I think your K6-2 couldn't have been from 1997. Those came out the following year.
Other than the original chips running a little hot, there was nothing really wrong with them. The real problem was the crappy chipsets that supported it. I went through THREE bloody boards trying to find a decent one...only to go back to 430TX.
In my opinion the K6+ chips made better upgrade chips for old intel boards than being sold on newer platforms. Too bad basically nobody back then used them as such.

I bought my K63+-500 from eBay for EUR 15 from a seller with hundreds three years ago. Of course, even then they sold out pretty quickly at that price. CPU is legit, and happily works at 600MHz and beyond, although it requires significant extra voltage to be stable at higher clocks. That's on a 1.04 rev Asus P5A btw, that itself is stable up to 133MHz. Got very lucky there 😉

Anonymous Coward wrote on 2021-12-08, 07:48:

In my opinion the K6+ chips made better upgrade chips for old intel boards than being sold on newer platforms. Too bad basically nobody back then used them as such.

Well, we have to remember that, for most users, it was actually not possible to use the "plus" chips. 😀 There were only a handful of boards that supported them at the time.
Sure, now we have a lot of boards that officially or unofficially support them, but in the year 2000 when these chips would've made sense, this was not the case.
And by 2001, many people (including myself) had already upgraded to much more powerful platforms.

Only a handful of boards, most of them expensive, and the CPUs themselves were hard to come by and expensive too. I recall only time I saw one priced at a level that I considered reasonable was in late 2001. At that time I was looking for an affordable upgrade to my P3-700E, and could get a Duron 900 + K7S5A for the same price as the K63+-450 and a P5A. That was a pretty easy decision.

dionb wrote on 2021-12-08, 09:01:

At that time I was looking for an affordable upgrade to my P3-700E, and could get a Duron 900 + K7S5A for the same price as the K63+-450 and a P5A. That was a pretty easy decision.

Oh, yeah, I totally understand. 😁
At the end of 2001 I also upgraded from a K6-2 500 MHz to a Thunderbird 1.33 GHz. To this day, I consider this upgrade as the biggest jump in performance that I've ever seen (and probably will ever see).

dionb wrote on 2021-12-08, 08:25:

I bought my K63+-500 from eBay for EUR 15 from a seller with hundreds three years ago. Of course, even then they sold out pretty quickly at that price. CPU is legit, and happily works at 600MHz and beyond, although it requires significant extra voltage to be stable at higher clocks. That's on a 1.04 rev Asus P5A btw, that itself is stable up to 133MHz. Got very lucky there 😉

So 4.5x133? Sounds pretty nice 😀

These cpus aren't multiplier locked. Usually you run them at 100 base clock (95 or 105 is quite ok too) with multi up to 6X.