Looks like the K6-2+ or K6-III+ chip - intended for mobile use and made at a these speeds: 450/500/500/550MHz. They work on some boards. but need a BIOS
that is capable of accepting them and a board that can supply ideally 2.0v or failing that as close as possible, i.e. 2.2v.
Both the + chips normally need 3.3v I/O voltage and 2.0v core voltage (double-check the core, it will be printed on the chip). They use a 100MHz FSB (front-side-bus), which is the speed at which the chip talks to the chipset: a 550MHz CPU refers to a core frequency of 550MHz, multiplied by 5.5 since we are using a 100MHz FSB.
Keep a note of your DIP switches, on the actual board. Half of them will set the FSB and the other half, the multiplier; sometimes you can use a light to see the settings which may be actually etched on the board along with the board model istelf. IF you can get the model make and number of your board you're neally there.
With the K6-III+ hwoever, you may have a 450MHz model which while good for over-clocking, doesn't like running at 600MHz without some core voltage alterations. This may be the reason for no video and the best thing to do is as suggested just aim for a very safe, default setup. Try and run her at the speed stated on the front of the chip, making sure that your core voltage is nothing higher than 2.2v for safety and that your FSB speed is at 100MHz (a lot of older boards dindn't go below 2.2v and FSB speeds like 112MHz need good PC100 RAM or ideally PC133). Raising a FSB speed beyond 100MHz with integrated video is tricky because of the way the AGP and PCI speeds work - in short, avoid speeds like 124MHz or 133MHz if they're offered.
Also note: You may see that your range of multipliers is limited to 5.5 on the board itself; how come you have a 600MHz unnoficial CPU? Because AMD knew of the 5.5x limitation and got round this with a clever bit of internal hardware in the CPU; set the multiplier to 2x and the CPU will re-map this to 6x.
Sorry about the randomness of this post, I have to dash out. Hope it helps in some small way - I would try and see what make of board you have and what version so that you can get a manual or do some searching. These boards are very cheap these days, so don't give up hope; if you have a working CPU you have a very good one at that!
. AMD CPU Data: http://www.tomshardware.com/20.../amd...ult/page23.html
. Belarc Advisor: http://www.belarc.com/free_download.html
. GPU Comparison for Laptops: <a href="http://www.notebookche