Which matched Celeron pair can reach 100FSB easier?

CZroe

Lifer
Jun 24, 2001
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I've changed my mind about overclocking this system so now I'm thinking about trying to reach at least 100FSB on my system for several reasons:
PCI/AGP clock divider can set the clock speed at 33PCI & 66AGP (As it should be)
Fully utilize the PC100 memory w/o overclocking it (No need to invite more instability)
I am *NOT* simply trying to achieve the highest clock! I would simply up the FSB to whatever the 466 could handle if that were true.

I have 2 matched 466Mhz PPGA Celeys (CPU Multi. 7x) in my dual CPU setup (Abit BP6 Dual Celeron Mobo)
I have 2 matched spare 366Mhz Celeys (CPU Multi. 5.5x) loose.

If I up the FSB on the 466's to 100Mhz, I force the processor to 700Mhz, which is WELL beyond the PPGA core's capabilities, right?
If I do the same on the 366's, I get 550Mhz Much more manageble/possible with a good cooler am I right?

So should I scrap the 466's for the 366's w/ excelent cooling? It just seems that they scale better to me.
I think I'll have better luck w/ the 366's because I've never heard of a 466 non-FC-PGA Celeron reaching 700 without something serious, so what do you guys think?

Sure, if I'm not overclocking anything, the Celeron 466's are what will stay in.

I'm planning on getting Retail Intel FC-PGA heatsinks (If they'll fit, the 933-1000Mhz HSFs are pretty big!).
 

Sukhoi

Elite Member
Dec 5, 1999
15,350
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106
Why get retail heatsinks? Why not Global Win or Alpha or something built for overclocking? And are you sure a FC-PGA heatsink is even going to fit on a PPGA processor?

Go with the 366 MHz Celerons if you want to get up to 100 MHz FSB. You won't be seeing 700 MHz with a standard Celeron without peltiers and even that is doubtful.
 

AndyHui

Administrator Emeritus<br>Elite Member<br>AT FAQ M
Oct 9, 1999
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You will NOT be able to run the PPGA Celeron 466s at 700MHz. There is NO WAY the .25 micron Mendocino core will reach that speed.

Many 366s did make it to 550MHz...that is pretty much the limit of what the .25 micron Mendocino core will do.

If your 366s cannot do 550MHz, I suggest you go with the 466s and bring them up to 525MHz (7 x 75). This should be achievable without too much effort.

FC-PGA heatsinks are not really appropriate for the PPGA processors, as the CPUs are of a different height.
 

MadRat

Lifer
Oct 14, 1999
11,999
307
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The old c466 core topped out under 560mHz on average. You may squeeze out a 83fsb, but definitely not 100fsb.

Don't get to the PPGA celerons for 100fsb when the lowly c566 is below $40 mail-order. Plus the FCPGA ones have SSE, which makes a difference in newer games.
 

CZroe

Lifer
Jun 24, 2001
24,195
857
126
Sukhoi: Yeah, I pretty much knew it wouldn't reach that. Oh yeah, &amp; the Intel HSFs are VERY nice from THIS line (933Mhz+ FC-PGA)), but you're right, I don't think they'll fit (See my OTHER POST.

AndyHui: Thnx for the info, that's what I was looking to learn in my other posts today! :)

MadRat: FC-PGA Celeys don't work in the Abit BP6 dual Celey board :( There is an adapter &amp; BIOS upgrade to get SINGLE ones to work, but not dual (Despite all the rumors).

All:
If pulling 550Mhz out of the 366 Celeron is so close to the limit, then what kinda cooling should I use to EXPECT to reach it w/ no problem? I hope I don't have to go the water-cooling route but I will someday if it takes that :)
 

MadRat

Lifer
Oct 14, 1999
11,999
307
126
Slaps forehead. Well in that case try the c366's. If 100fsb is not good then try 90/95fsb. A matched pair at 95fsb is still better than a pair of c466's at 66fsb. Its pretty much a draw in the c466@75fsb versus the c366@90fsb.
 

CZroe

Lifer
Jun 24, 2001
24,195
857
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Yeah, and whatever is closer to 100FSB means a more stale PCI/AGP bus so the 366 would win in that scenario (Remember, I'm not going for &quot;higest clock speed&quot;) :)
 

EdipisReks

Platinum Member
Sep 30, 2000
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i would go with the 366's. 550 is a nice clock speed, and just about any 366 that you will get should do 5.5x100 with just a little more voltage.

--jacob
 

MorpheusMan

Member
Jul 5, 2001
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Go with the 366s. Allmost all of them will do 550mhz with a 100mhz bus. Very few 466s have been able to run past 525. Even if you got them to 583 you'd be using a bus speed of 83mhz.

I wouldn't worry too much about using the retail heatsinks that came with the Celerons. The 366s I've used didn't seem to get that hot, even with a 100mhs FSB. Use whatever you've got first, and watch the temperature. Unless they heat up don't worry about it.
 

CZroe

Lifer
Jun 24, 2001
24,195
857
126
Well, I currently don't have any Retail HSFs... That's why I was interested in the REALLY large FCPGA heatsinks (Smaller ones were included in FCPGAs less than 933Mhz, &amp; they might be the only ones that'll fit in a BP6 :(). If I have to buy an &quot;extreme overclocker's heatsink,&quot; then what can I buy that's some-what small &amp; doesn't overlap the socket by far?

PS: Thnx for answering my question ppl :p
366 it is then... (Only thing is I have to get one of them back from the friend that WAS borrowing one of the 466's :))