IIRC, back in the days, a Celeron 300A @450 was very close to be on par with a PII 450, cribbled off course by the size of the cache, but most was won back by the full-speed on-die cache. But again - that was @100 MHz FSB, so ..

Sounds kind of like the voltage regulator for Vcore is defective ..? You are probably right. A closer inspection revealed this lil' bugger: https://i.imgur.com/jG0Rilam.jpg Sure looks like its had a hot moment, or several. Anyone know how I would go about measuring this ? Beautiful, they actually …

Sounds kind of like the voltage regulator for Vcore is defective ..?

2.5x40 would be the choice then? Isn't that a good compromise between performance and bus compatibility?

Yeah, that's one of the most pointless Overdrive (the 169 pin one has some use), I have one ... I have no clue why it exists, it's just a 486DX2 66 I think the point is that it has a heatsink mounted to it. Regular DX2-66 CPUs came without a heatsink, putting the responsibility for proper cooling …

Cyrix200+ wrote: Biggest issue I think would be the contents of the two GAL chips and PCB costs. A friend of mine has PCBs produced in China. I think he pays in the area of $15 including shipping for 10 PCBs in 100x100 mm, so the cost of PCB is not necessarily extreme ..

Yeah, looks like "tulip" sockets, like the pins in these: https://www.google.com/url?sa=i&source=images … 554297438945669

I see other sources agree with you all, that it in fact is an LX chipset on the 686LX3 .. 😀

Well, for as much as the board's name, it makes perfectly sense it being an LX chipset :lol: I was just soooo certain that data on Gigabyte's own website would be the least inaccurate place to find data. But I'll stand corrected, all though being an EX chipset, which is actually a newer version of …

TheMLGladiator wrote: H3nrik V! wrote: And as far as I can see, it is the "EX" chipset .. What makes you say that? I'm finding that the 686LX3 is an LX board. Specifications on Gigabyte's website: https://www.gigabyte.com/Motherboard/GA-686LX3#sp

TheMLGladiator wrote: SSTV2 wrote: GA-686LX3 supports 100 MHz FSB. It does, but the system crashes when trying to do anything (like install win98). And as far as I can see, it is the "EX" chipset ..

TheMLGladiator wrote: It does appear to be that way. 100 MHz FSB causes complete system instability, so I guess I'm stuck at 266 MHz 😢 Using an EX chipset, which is 66 MHz, it's impressive that the board event has 75, 83 and 100 MHz settings on the clockgenerator ..

So, how is the used 486SXL performance-wise in comparison to a "clean" 386 cpu? Do you want the SXL compared against the AMD DX40 or Intel i386DX? I can give Doom a quick run. I ran DOOM and Landmark v2 with an SXL-33 and i386DX-33 on the same system. In Doom, the SXL scored 9.79 fps and the i386 …

After resisting for a loooong time, only being a passive reader, I had to register now - this is way too interesting not to be a part of :lol: So, how is the used 486SXL performance-wise in comparison to a "clean" 386 cpu? Would the difference between fpus maybe be greater if the cpu was less …