Re: Why USB 2.0 is slower on AMD than on Intel
Posted on 2011-06-19, 15:12
Personally I don't see any difference in USB 2.0 speeds between my AM3 (780G) and Core 2 (P965) systems.
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 00:36
I'd like to see some bencmarks of the C3 at 133MHz... like speedsys, 3dbench and Norton Sysinfo 😀
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 00:50
@Ace: Is your C3 unlocked? And what core is your C3? Ezra or Nehemiah?
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 01:25
I'm not entirely sure what core my C3 runs on. I know for a fact it's supposed to use a 10x multiplier, however, the BIOS on my Soyo motherboard locks it at 2x multiplier. I guess this means the CPU's multiplier is unlocked? It's meant to run on a 100MHz FSB, just so you know. I'd like to see some …
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 01:33
Strange that the BIOS locks it at 2x, but otoh it might open the possibility for great underclocking potential if C3 still has a working 2x multiplier 😉
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 01:35
the same goes for my K6-III+, I can't set the multiplicator below 2,0
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 01:54
Well, it looks like my Soyo motherboard's BIOS is full of s***, as SpeedSys reports the CPU running at 667MHz. With cache, SpeedSys ranks the C3 in my computer as equivalent to a 300MHz Pentium II. Without internal cache, SpeedSys ranks the C3 a little lower than a 50MHz 486DX2. By the way, does …
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 02:05
the same goes for my K6-III+, I can't set the multiplicator below 2,0 You can actually, but it'll interpret the 1.5x multi as 3.5x (just like it will interpret 2x as 6x), or atleast it should, just like the MMX chips. Well, it looks like my Soyo motherboard's BIOS is full of s***, as SpeedSys …
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 02:12
My C3 is made for a 100MHz FSB and it has a 10x multiplier. SpeedSys shows the external clock running at 77MHz. Does that mean the motherboard is running with a 77MHz FSB? If so, then all I have to say is WTF. That doesn't seem right at all.
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 02:25
My C3 is made for a 100MHz FSB and it has a 10x multiplier. SpeedSys shows the external clock running at 77MHz. Does that mean the motherboard is running with a 77MHz FSB? If so, then all I have to say is WTF. That doesn't seem right at all. Yup, that definitely falls into the WTF category :P On a …
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 02:36
I did, but came up with absolutely nothing good. I keep seeing things about the Soyo SY-6BA+III and Soyo SY-6BA+IV, but not the plain Soyo SY-6BA+. Unless the one I have is one of those models? I don't even know which one mine is.
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 02:53
Sounds kinda like your board is a SY-6BA+I 🤣
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 03:16
I have a feeling the board I have is either an SY-6BA+III or SY-6BA+IV. Thing is, I don't know what's the difference between the two boards. Hell, I don't even know what BIOS version is on my motherboard. I do think the date on it is from some time in 2000. EDIT: Looks to be neither of the two as …
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 11:22
...Speaking of which, does the 440BX northbridge absolutely need a heatsink? I'm not sure. So far all BX boards I ever saw (which are many dozens) came with a northbridge heatsink, so I'm inclined to believe they are better off with a heatsink. What I found somewhat odd is that Intel's replacement …
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 14:22
Thinking back to the 667MHz clock speed my Cyrix C3 is running at, considering the CPU has a 10x multiplier, the Soyo motherboard I have should be running with a 66MHz FSB. How would I go about unlocking the multiplier of a Cyrix C3? I remember some place saying to use some kind of conductive …
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-20, 21:11
Iirc they (at least the Nehemiahs) had bridges on top of the CPU package similar to the Thunderbirds. I also read in the datasheet (will edit this post to provide link later) the multi could be changed vy software
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-21, 09:38
I had a look at my C3 CPU's last night to check on those bridges. It turned out that 4 CPU's I have, have those bridges: The 866Mhz one has 12 bridges and the 2 1000's and the 1200 have 11. I cross referenced them with the BF pins in the datasheet but couldn't deduct from the differences which …
Re: Pentium II and 486/AMD K-6 builds in progress
Posted on 2011-06-21, 13:02
I wouldn't bother replacing caps on a Slot 1 board, it's easier (and usually cheaper) to simply get another Slot 1 board. The Katmai 550 may not be dead, I've found cleaning the contacts with a paper cloth and some rubbing alcohol turns "dead" Slot 1 CPU's back to life on more then 1 occasion ;) …
Re: Pentium II and 486/AMD K-6 builds in progress
Posted on 2011-06-21, 13:59
I wouldn't bother replacing caps on a Slot 1 board, it's easier (and usually cheaper) to simply get another Slot 1 board. The Katmai 550 may not be dead, I've found cleaning the contacts with a paper cloth and some rubbing alcohol turns "dead" Slot 1 CPU's back to life on more then 1 occasion ;) …
Re: Cyrix C3 and 486/AMD K-6 builds in progress
Posted on 2011-06-21, 15:40
My question to whoever reads this: Does anyone else here have a C3 here which has bridges? If so, could you please list your part and the corresponding bridges here so we can improve the amount of data we can work with? My C3 has those bridges on the underside. I'll remove it from the slotket and …
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