Overclocking K6-3+ 550 ?

January 6, 2010 at 18:51:22
Specs: Windows, n/a
Hi guys,

From what i can tell, people seem to agree that the AMD k6-3+ 550mhz is a good OCer... So i'd like to buy a board for mine and take it as far as i can :)

What's the best OCing/Highest FSB board for doing this?

For photos of my chip, please visit my blog:
www.benganley.com


Thanks :)

Regards, Ben


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#1
January 6, 2010 at 19:06:58
Your biggest issue will be the pci/agp bus when you pass 112 on the front side bus. 672 would be your best bet(112 x 6). what OS due you plan on using as your overclock will be rather pointless with modern software

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#2
January 6, 2010 at 19:22:00
The max safe FSB for any of the old super 7 boards was 112MHz. Anything higher than that puts the PCI, AGP & IDE too far out of spec. So with the default multiplier of 5.5x, the best you can hope for is 616MHz. If you use the "2x as 6x" trick, the best you could do would be 672MHz. I highly doubt you'll be able to pull it off but plan on overvolting the hell out of it.

Look for a board based on the VIA MVP3 chipset. Two of the best from back in the late 90's were the VA-503+ (AT board) or the FIC PA-2013 (ATX board).

http://www.anandtech.com/mb/showdoc...

http://www.anandtech.com/mb/showdoc...

http://www.tomshardware.com/reviews...


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#3
January 7, 2010 at 07:04:14
Thanks guys. Hey weren't some super 7 boards dual channel? I swear i read that somewhere, though they're rare. Could the cpu even take advantage of added memory bandwidth?

I've been looking at the 2MB L2 edition of the PA-2013 ;)

I think i'll wait around for mattwhiz to have some input since he seems to be the resident Socket 7 lover :)

Regards, Ben


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Related Solutions

#4
January 7, 2010 at 09:45:01
"Hey weren't some super 7 boards dual channel?"

If I'm not mistaken, some boards based on the Aladdin 7 chipset supported dual channel. What is it that you're trying to do...just play around/experiment? Obviously there are better board/CPU combos available.

Something to watch for is the IDE transfer rate...*most* (not all) of these old boards only support ATA-33. ATA-66 wasn't a standard til the late 90's. So what you may gain by overclocking will be offset by the slow data rate of ATA-33. Of course, you could always add a controller card.

http://www.tomshardware.com/forum/1...


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#5
January 7, 2010 at 10:50:44
Well, I learned something new today. I guess the original nForce was behind the times!

"Could the cpu even take advantage of added memory bandwidth?"

I don't think the K6-3 and its on-chip L2 would benefit from having dual-channel memory, but the extra bandwidth would probably give the K6-2 and Pentium processors a nice boost.

Socket 939|Dual-Core Opteron 185 @ 3.2GHz|A8N32-SLI Deluxe|4GB CL2 PC3200|SLI 8800GTS|1TB|PCIe X-Fi Titanium Pro|Win7 Ultimate x64


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#6
January 7, 2010 at 22:14:21
There he is, Jackbomb! The awesome old school tweaker guy =D

Yeah i thought this would be a bit like using ddr boards with a Tualatin, the system simply couldn't make use of the added bandwidth without raising the fsb.

@Jam: Yeah this is just fun experimentation =) the controller card is a good idea =)

Where is Mattwhiz? I'm sure he would have some input here...

Regards, Ben


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#7
April 1, 2010 at 02:26:28
Hi, I own a K6-III+ 450@633Mhz ROCK SOLID!!!, If U want to get the best OC experience don't look for a mobo with big L2 cache on board because when U pass the 100Mhz FSB suarly the on board L2 freezes!
It's known that the best OC experience with K6-III+ are with L2 cache on board DISABLED in the bios, don't forget this.
The maximum OC is 130FSBx2 (internally 6) that results in 780-800 total speed.
The best mainboard to do this is in my opinion the Gigabyte GA-5 AX rev.5 with ALi AladdinV AGP2X chipset.
U can get one on ebay, I own this board and to stabilized it there are some simply mods to do.
Don't get nuts for a L2 onboard, the K6-III has 256Kb L2 built in, the mobo cash is used like an L3 cache but it freezes in high overclocking experiences.
For a ROCK SOLID OC U have to nake your cpu, with a cutter, slowly, get away the aluminium cap, so U can place a copper heatskin directly on die. Use silver compound between heatskin and cpu die.


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