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Topic Title: Sempron equivalencies
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Created On: 02/15/2005 08:11 AM
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 02/15/2005 08:11 AM
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thelawnet
Junior Member

Posts: 1
Joined: 02/15/2005

Hi. I am looking at building a new Sempron-based system, and I am a little confused about Athlon XP & Sempron differences...

Firstly, are Semprons tbred or barton or both, and how can I tell the difference?

I guess barton is better and will overclock more. I am looking at a Gigabyte GA-7NF-RZ, which is a budget nforce2 400 motherboard, and cheap pc3200 RAM. I will put the FSB at 200MHZ (this motherboard won't let me do much more than that).

Here are the Semprons with multipliers

2300+ 9.5x, stock 1.583GHz oced to 200MHz fsb =1.9GHz
2400+ 10x, stock 1.667GHz @200MHz 2GHz
2500+ 10.5x, stock 1.75GHz @200MHz 2.1GHz
2600+ 11x, stock 1.833GHz @200MHz 2.2GHz

The tbred Athlon XP 2400+ clocks in at 2GHz, but with 133MHz fsb (rather than 200MHz), while the 2800+ is 166MHz fsb, and 2.166GHz. I'm not sure how much difference the 33MHz fsb makes at the same clock speed, but I guess that means that a
2500+ at 10.5x200 = Athlon XP 2800+ speed? i.e. about the same as P4 2.8
then 2400@10x200 = roughly XP 2700+
and 2300+ oced = roughly XP2600+

it's difficult to really compare, basically overclocked sempron should perform similarly to tbred (same cache), but how much effect does the FSB increae have?

And are my overclocking assumptions reasonable on my motherboard, using cheapest possible pc3200... And will dual channel (two memory sticks) work on that motherboard?
 02/15/2005 08:41 AM
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koolaidwa
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Posts: 9068
Joined: 04/06/2004

welcome to the forums

a barton core is a tbred core with xtra cache

sempron 3000+ is the only sempron that uses the barton core with all 512 cache enabled

here is what i got

2500+ 166fsb sempron

2400+ AXP 133fsb

2400+ 200x100 (200fsb) sempron

the sempron beats the axp by a lot, higher fsb with a lower multi helps big differnace

i would get the 2400+ and oc it to 2ghz using the 200fsb trick

tyhats probly ur best bet, what will u be using the machine for tho?

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