Amd T-bird 200/266 whats the diff?

bigpig

Member
Dec 22, 2000
122
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Im seeing theses 266 t-birds for sale what is the differnce. Is it only for the ddr platforms or what. Havent seen any reviews using them either weather it be the new "a" style mobos or the ddr.

 

esung

Golden Member
Oct 13, 1999
1,063
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New Athlons runs on 266Mhz FSB instead of 200Mhz FSB. which itself improves the performance quite a lot.

 

Noriaki

Lifer
Jun 3, 2000
13,640
1
71
Same difference as a P3 vs P3B

Faster front side bus.

The older TBirds use a 100Mhz DDR (200Mhz effective) FSB, the newer ones use a 133Mhz DDR (266Mhz effective) FSB.

The "266"Mhz FSB TBirds are quite a bit faster at the same clock speed than the "200"Mhz FSB Versions.

But you need a chipset to support it, KT133 doesn't. KT133A does, and any of the DDR-SDRAM chipsets do.
 

bluesky

Golden Member
Nov 13, 2000
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76
Yours is 100mhz, but you could unlock the chip to make it run at 133mhz.
 

UKspace

Banned
Dec 15, 2000
343
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0
If you have not unlocked the CPU and messed with the multipler and FSB it will be running at 200Mhz FSB (DDR)
 

Capn

Platinum Member
Jun 27, 2000
2,716
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Are the new 1.2ghz running at 200 or 266? Let's say I just ordered one, probably a 200 or 266?
 

Judgement

Diamond Member
Feb 8, 2001
3,815
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Unless it specifically said it was running at 266mhz fsb when you orderd it, I would assume it wasn't an athlon-c.

The Athlon-C's are definately more expensive also. Not to mention only a few stores have them, most say they are shipping mid-March.
 

Rand

Lifer
Oct 11, 1999
11,071
1
81
The only difference is FSB, there are 200/100MHz FSB and 266/133MHz FSB T-Birds. The 266/133Mhz FSB T-Birds come in speeds of 1GHz and 1.2GHz currently.
 

BooGoo

Member
Mar 3, 2001
155
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If I unlock the 200/100MHz FSB to make it 266/133MHz FSB what's the difference between the two chip? Is it worthwhile to get the actual 266/133Mhz FSB T-Birds when all I need to do is unlock the older T-Birds?
 

nippyjun

Diamond Member
Oct 10, 1999
8,447
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If it's unlocked then there is no difference except you pay more for the official 266 chip.
 

SiliconVandal

Banned
Nov 17, 2000
786
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0
I would get a 200 T-Bird and a 266 Mobo and set it to 266..you would get some nice overclocking and a lot more bang-for-your-buck, and potentially could get a much faster chip.
 

Skooch

Banned
Jan 21, 2000
192
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0
I just purchased a 1.2GIG OEM 266mhz bus CPU from Newegg for $236 before shipping. They had a few in stock, so I snagged one. Should be here by Friday. That's pretty close to what the 1GIG 200mhz was selling for not long ago. I figure I don't want to mess with possible multiplier unlock problems when the 266 bus processor is selling so cheap.
 

RPatrick

Member
Mar 2, 2001
144
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Is the difference in performance really that much? As far as I have seen, with memory speed being equal, the actual performance gains are less than 10%!?!?!?
 

JorgeElPrimero

Senior member
Feb 13, 2001
240
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I have the Athlon 'c' which has 266 mhz bus and my friend has the EXACT same system except his is running at 200 mhz fsb mine is much faster. I thought there would be a gain but the difference is actually a little amazing.
 

duragezic

Lifer
Oct 11, 1999
11,234
4
81
So if I had a KT133A board and a regular Athlon (not 'C') then I could set the fsb to 133mhz and the multiplier to the correct one to keep the same clock speed? That is if it's unlocked... but do all of them come unlocked or do I need to do the golden bridges thing (which I DON'T want to do!)?