PIII 1Ghz 100 or 133 FSB

[loontune]

Suggestions please. About to buy a 1Ghz and really want to know if theres any gain in either the 100 or 133 FSB version. Have a be6II v2 so can go to 200FSB and 150 memory. Only thing could hold me back is PCI divider. I forget if this MB has a 1/5 or not. I know I can do 1/3 and 1/4, but dont want to be held back by a too high PCI bus setting by getting a 133 FSB chip. So which chip performs better? Is there better system performance running a higher FSB? Which chip is more likely to go higher?

[[OC]_SR20DE]

Ok.. you mean the AGP divider ratio that is holding you back, not the PCI... I believe u'were refering to AGP anyways.. I could tell... :) yes, you're right that the AGP divider is some bottle-neck there.. A chip with 133mhz fsb will perform considerably better than the 100mhz one and they will perform even better as you overclock that 133mhz one.. because the fsb is much higher. If you could manage to run your board with overclocking from 133mhz bus will get you a lot better performance. Whereas the 100mhz bus would give u more stability but with the poor performance. it's your call.. :)

[AoD]

Depends, you would probably get higher in overclockign with the 100mhz fsb since the fact that the motherboard probably is officially able to hold 133. Therefore no worries about the motherboard and probably no worries with the PCI bus. As for 133 you would be overclocking the motherboard and chipset as well and you may have problems with the PCI bus at extreme bus speeds >=150. Now as much for stock clocking, the 133 is gonna have a 33% better Bus bandwidth speed as you probably already know. But for one thing, I didn't yet see if there was a 100mhz FSB 1gig p3 out there... Anyways if there is, you might get some better wields from it if you are going extreme but for low end overclocking the 133 in my opinion would be a better choice. Myself, I would take the 100fsb if I could just to mount it on my i440bx Soyo :)

Hope that helps a little..

[crunch]

Loontune,
Faced with the same decision, I chose the P3 1Ghz @100 fsb. Placed in an ABIT BE6-2 mb, I'm currently running at 1140 Mhz (114 fsb) air cooled using an Alpha cooler. the Processor refuses to run stable at anything higher using only air cooling. I have had it stable at 1250Mhz (125 fsb) using a 75watt peltier and Alpha cooler combo.
In benchmark testing, my memory speed has slowed down from my previous setup (pIII 700@139fsb). The processor benchmark is higher.
The net results is that the overall performance is about the same as it was with the overclocked pIII 700.
In retrospect, I should have chosen the PIII 1Ghz at 133fsb. The components that I use have proven themselves stable up to 150Mhz with other processors. If a PIII 1GHz @133 would run at 150fsb I would have had a better overall performance upgrade.
NOW to be perfectly honest, I should have purchased a 1.2 or 1.3 T-Bird and said bye bye to Intel. I'm sure that I will when they actually release the Palominos.

[[OC]_SR20DE]

Crunch,
Very nice post. yes... yes... that's what I agree.. give up a little on the number of multiplier and get more on the FSB is the way to go specially for overclocking and benchmarking= better performance. Notice that with the 700Es for example.. they recommend choosing 100mhz bus because they have plenty of room left for overclocking, whereas the 1 ghz processors have already reached close to its current Intel p3 chip maximum clock speed point. i.e. 1.13ghz+/-. So in this case, the 133mhz chip would be a better investment i would say.

I suggest too.. that Loontune should maybe try to aim for 7.5 x 133mhz chip even though the Abit BE6-2 is officially limited by 100mhz bus support, they are good board and well known for overclock. It's just my opinion.. :)

[DocClock aka MadClocker]

If I were to get a 1giger..it would have to be the 133 eb ver, as it would have more bandwidth....and you ain't gonna get much past 150mhz anyway, especialy with a cheap video card...(i'm not saying you have one) What I am saying is that the BE62 is a BX board, and as such it only supports 100mhz (officialy)
and although it can go to 133 and beyond...your agp devider is only 1:1, or 2:3....so you have to have really good fast ram, and a fairly new video card..and have your pci set to 1/4.....Like the other person said, it's your call.
I don't envy you in your desision...that's a toughy...I know, get one of each lol

[loontune]

Based on all your opinions I tried to cancel the 100MHZ FSB order and go with the 133 but it was too late. It's arrived already. Not much diddling with it. It went to 1160 1.90 volts and that's it. It's weird, 117 * 100 = 1170 is not just a little unstable, it crashes during boot. But 1160 is very stable, no crashes. Voltage didnt change that. That's a big response difference in just that little 10MHZ space.

[Phil]

your probabally better off that way really as with the EB(133mhz) chip you would have needed to get over 150mhz which would have stressed your ram, vid card and motherboard chipset a lot more

[Shadow ÒÓ]

loontune (Apr 04, 2001 12:52 p.m.):
Based on all your opinions I tried to cancel the 100MHZ FSB order and go with the 133 but it was too late. It's arrived already. Not much diddling with it. It went to 1160 1.90 volts and that's it. It's weird, 117 * 100 = 1170 is not just a little unstable, it crashes during boot. But 1160 is very stable, no crashes. Voltage didnt change that. That's a big response difference in just that little 10MHZ space.

Burn it in......give it 24 hours or so running prime 95 or something....then try agian. I'll bet it goes higher.

[Phil]

what cooler are you using?

[Bob64]

go with the 100 and clock it to 133. just make sure you have good cooling when you do this.

[Phil]

haha a 1ghz E overclocked on a 133mhz fsb, somebody get the ln2 out, I gather you haven't been at this long, the 1ghz chip will usually reach somewhere around 1.1ghz with good cooling but 1.33ghz would need extreme cooling, I don't even think a pelt would do it

[[OC]_SR20DE]

Bob64 (Apr 04, 2001 06:20 p.m.):
go with the 100 and clock it to 133. just make sure you have good cooling when you do this.

No.. that's pushing it.. 1330mhz is bit 2 HI..

[jeff_harrison_344]

I dont know if some of you know this, but I personally would have bought the 133MHz FSB. Why you ask? That is because pretty much all PIIIs max out at around 1Ghz. SO you would have probably been able to crank her up to maybe like 145, stable, and gett better benches, cuz remember, what would make more a difference, a 100Mhz, or about 30MHz more FSB Speed.

Just my .02 cents!

[[OC]_SR20DE]

Jeff,

That's what I, DocClock aka, and Crunch meant. ;D

[[OC]_SR20DE]

Jeff,

That's what I, DocClock aka, and Crunch meant. :)

[Terry]

I recently got the 100mhz FSB chip. No complaints. It is on a year old Soyo 6BA+4 board that had an early stepping 750 Flipchip an a MSI Master slotket. No way could all my perephs handle the 133mhz FSB of the EB version. Using an Alpha P3125 with Sunon Green Label fans it runs 1150mhz solid as a rock. Had a little trouble at first but clearing the CMOS and setting the BIOS to default got it going. It was worth the upgrade and it does run good.
The downside is I just built a TBird 1.33ghz [AXIA/266mhz FSB] on an Iwill KK266R board. Still playing with it but 1500mhz is no problem. Comparing the Sandra scores shows me why everyone is jumping on the AMD bandwagon... it makes the PIII look pretty anemic in every benchmark... and is noticably faster at doing everything I have tried than the PIII.

[wild_andy_c]

Got to be the 133Mhz version.

It would be a waste to purchase an expensive chip and have it crippled by a 10x multiplier.