Need some urgent help regarding FSB compatability

noodle · 22nd Mar 2006, 07:47 PM

Need a bit of help.

I was lucky enough to be able to find and buy a new OEM Athlon XP 2600+; on ordering I requested the older 266 FSB version. A package arrived with the said processor but on checking the AMD part number it identified the CPU as an Athlon XP2600+ 333 FSB Barton Model 10. Now here’s my question.

The intended mother board has a combined FSB of 200 or 266 (yes it’s an old board), now I’m pretty sure that the processor will not work on the board, but the company concerned advised me that there technical team is pretty confident that it will work on my board.

Not being that techie my basic understanding of processors suggests that the FSB of the board most match the processor FSB

So will a Socket A processor with FSB of 333 work on a Socket A board that has a FSB of 200/266. Something tells me that it won’t and I should return it to them forth with. Any help would be appreciated.

If the CPU will work what would the effects be?

Thanks for listening

Adrian Wong · 22nd Mar 2006, 08:08 PM

Hi, you should have no trouble running the 333MHz FSB Athlon XP on a motherboard that supports only 266MHz or 200MHz FSBs.

However, the processor will run slower, since its clock speed is derived from the FSB.

noodle · 22nd Mar 2006, 08:32 PM

Thanks for the advice.

So my next question is how much slower would the processor be. Would the installed Athlon XP 2600+ 333 FSB Barton model 10 be significantly slower or equal to the Athlon XP 2600+ 266 FSB Thoroughbred Model 8 (which was the processor i was expecting to receive).

So if the processor is running slower then it's design, can it be overclocked to recover the lost performance. Would some one be kind enough to post a link to any guides or forum entries. Haven't got the time to search as i'm writing this from work

once again thanks

Chai · 22nd Mar 2006, 08:58 PM

It's difficult to overclock back, which is why 333MHz motherboard existed in the first place.

Multiplier is most likely to be locked, so you can gain back by increasing the multiplier.

Adrian Wong · 22nd Mar 2006, 09:13 PM

Yeah, it's difficult to overclock it back to the original clock speed, unless its multiplier is not locked.

Plus, overclocking the processor depends on the motherboard being able to support a higher FSB. But that's not what your motherboard supports, right?

22nd Mar 2006, 07:47 PM	#1 (permalink)
noodle Newbie Join Date: 25 Feb 2006 Location: UK Posts: 23 Reputation: 13 Rep Power: 0	Need some urgent help regarding FSB compatability Need a bit of help. I was lucky enough to be able to find and buy a new OEM Athlon XP 2600+; on ordering I requested the older 266 FSB version. A package arrived with the said processor but on checking the AMD part number it identified the CPU as an Athlon XP2600+ 333 FSB Barton Model 10. Now here’s my question. The intended mother board has a combined FSB of 200 or 266 (yes it’s an old board), now I’m pretty sure that the processor will not work on the board, but the company concerned advised me that there technical team is pretty confident that it will work on my board. Not being that techie my basic understanding of processors suggests that the FSB of the board most match the processor FSB So will a Socket A processor with FSB of 333 work on a Socket A board that has a FSB of 200/266. Something tells me that it won’t and I should return it to them forth with. Any help would be appreciated. If the CPU will work what would the effects be? Thanks for listening __________________ Brevis esse latoro obscurus fio

22nd Mar 2006, 08:08 PM	#2 (permalink)
Adrian Wong Da Boss Join Date: 10 Oct 2002 Location: In front of my BenQ Joybook 7000 notebook! Posts: 29,939 Reputation: 2958 Rep Power: 65	Hi, you should have no trouble running the 333MHz FSB Athlon XP on a motherboard that supports only 266MHz or 200MHz FSBs. However, the processor will run slower, since its clock speed is derived from the FSB. __________________ Dr. Adrian Wong Tech ARP \| Blog @ Tech ARP \| The Free Trade Zone DYKT : The only offshore account I have is at the sand bank? Keep Tech ARP free! Visit our sponsors! We need PROGRAMMERS and TECHNICAL WRITERS! Contact us if you are a hot shot programmer or technical writer! My items for sale : 50x SD Card \| Memory Stick PRO \| Cyclone Energy Saver \| Seiko SS watch \| Tiger/Carlsberg beer jugs \| Travel Speakers \| Motorola V600 \| Nokia N90 SOLD! \| New Lowepro Mini Trekker AW Other items for sale @ the FTZ : Zalman CNPS9500 LED @ $20 \| Zalman CNPS7700 Cu @ $20 \| Zalman CNPS7000 Cu @ $20 \| Swarovski bracelet watches \| Dell 17" LCD \| Hi-Fi speakers \| English DIVX movies \| HP LaserJet toners! \| Office chairs

22nd Mar 2006, 08:32 PM	#3 (permalink)
noodle Newbie Join Date: 25 Feb 2006 Location: UK Posts: 23 Reputation: 13 Rep Power: 0	Thanks for the advice. So my next question is how much slower would the processor be. Would the installed Athlon XP 2600+ 333 FSB Barton model 10 be significantly slower or equal to the Athlon XP 2600+ 266 FSB Thoroughbred Model 8 (which was the processor i was expecting to receive). So if the processor is running slower then it's design, can it be overclocked to recover the lost performance. Would some one be kind enough to post a link to any guides or forum entries. Haven't got the time to search as i'm writing this from work once again thanks __________________ Brevis esse latoro obscurus fio

22nd Mar 2006, 08:58 PM	#4 (permalink)
Chai Administrator Join Date: 6 Oct 2002 Location: Maranello Posts: 26,662 Reputation: 3984 Rep Power: 72	It's difficult to overclock back, which is why 333MHz motherboard existed in the first place. Multiplier is most likely to be locked, so you can gain back by increasing the multiplier. __________________ Chai (Contributor & Forum Admin) http://www.techarp.com/

22nd Mar 2006, 09:13 PM	#5 (permalink)
Adrian Wong Da Boss Join Date: 10 Oct 2002 Location: In front of my BenQ Joybook 7000 notebook! Posts: 29,939 Reputation: 2958 Rep Power: 65	Yeah, it's difficult to overclock it back to the original clock speed, unless its multiplier is not locked. Plus, overclocking the processor depends on the motherboard being able to support a higher FSB. But that's not what your motherboard supports, right? __________________ Dr. Adrian Wong Tech ARP \| Blog @ Tech ARP \| The Free Trade Zone DYKT : The only offshore account I have is at the sand bank? Keep Tech ARP free! Visit our sponsors! We need PROGRAMMERS and TECHNICAL WRITERS! Contact us if you are a hot shot programmer or technical writer! My items for sale : 50x SD Card \| Memory Stick PRO \| Cyclone Energy Saver \| Seiko SS watch \| Tiger/Carlsberg beer jugs \| Travel Speakers \| Motorola V600 \| Nokia N90 SOLD! \| New Lowepro Mini Trekker AW Other items for sale @ the FTZ : Zalman CNPS9500 LED @ $20 \| Zalman CNPS7700 Cu @ $20 \| Zalman CNPS7000 Cu @ $20 \| Swarovski bracelet watches \| Dell 17" LCD \| Hi-Fi speakers \| English DIVX movies \| HP LaserJet toners! \| Office chairs

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