There is a 1.8 Duron but I don't think there is a PR rating on the chip. AMD Duron 1.8GHz Socket A Processor - OEM Model# DHD1800DLV1C Item # N82E16819104160 Specifications: Manufacturer: AMD Model: DHD1800DLV1C Core: Applebred Operating Frequency: 1.8GHz FSB: 266MHz Cache: L1/64K+64K; L2/64K Voltage: 1.5V Process: 0.13Micron Socket: Socket A Multimedia Instruction: MMX, SSE, 3DNOW!, 3DNOW!+ Packaging: OEM (Processor Only) AMD Athlon XP 2400+ "Thoroughbred" 266 FSB, 256K Cache Processor - Retail Model# AXDA2400BOX Item # N82E16819103336 Specifications: Model: AMD Athlon XP 2400+ Core: Thoroughbred Operating Frequency: 2GHz FSB: 266MHz Cache: L1/64K+64K; L2/256K Voltage: 1.65V Process: 0.13Micron Socket: Socket A Multimedia Instruction: MMX, SSE, 3DNOW!, 3DNOW!+ Packaging: Retail Box (Heatsink and Fan included) As you can see the 2400XP 266FSB chip runs at 2GHz @133 so that can't be what is in your machine. You report 2390MHz. At 100FSB. Maybe someone else can make something of this. Did you by chance purchase a mobile 2400XP 266FSB. These chips are unlocked and maybe that is the problem.

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Name AMD Athlon XP Code Name Barton Specification AMD Duron(tm) Processor Family / Model / Stepping 6 A 0 Extended Family / Model 7 A Package Socket A Technology 0.13 µ Supported Instructions Sets MMX, Extended MMX, 3DNow!, Extended 3DNow!, SSE CPU Clock Speed 2389.8 MHz Clock multiplier x 24.5 Front Side Bus Frequency 97.5 MHz Bus Speed 195.1 MHz L1 Data Cache 64 KBytes, 2-way set associative, 64 Bytes line size L1 Instruction Cache 64 KBytes, 2-way set associative, 64 Bytes line size L2 Cache 64 KBytes, 16-way set associative, 64 Bytes line size L2 Speed 2389.8 MHz (Full) L2 Location On Chip L2 Data Prefetch Logic yes L2 Bus Width 64 bits Mainboard and chipset Motherboard manufacturer ECS Motherboard model K7S5A, BIOS vendor American Megatrends Inc. BIOS revision 07.00T BIOS release date 04/02/01 Chipset SiS SiS735 rev. 1 Southbridge SiS ID8 rev. 0 Sensor chip IT 0 Graphic Interface AGP AGP Status enabled, rev. 2.0 AGP Data Transfert Rate 4x AGP Max Rate 4x AGP Side Band Addressing supported, enabled AGP Aperture Size 64 MBytes Memory DRAM Type SDRAM DRAM Size 512 MBytes CAS# Latency 3.0 clocks RAS# to CAS# 3 clocks RAS# Precharge 4 clocks Cycle Time (TRAS) 6 clocks Bank Cycle Time (TRC) 10 clocks # of memory modules 1 Module 0 SDRAM PC133 - 512 MBytes Software Windows version Microsoft Windows XP Workstation Service Pack 1 (Build 2600) DirectX version 9.0c As you can see the name is Athlon, but the specification name is Duron!, just retested aquamark, and ive lost 5000 points since taking the 2000XP cpu out and puting this 2400XP cpu in. I was going to update my bios, but the manual says the boards compatible with anything up to a 2600. Do you think the cpus faulty? or the mobo? or just incompatability?

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It says your CPU is a Barton, which is NOT officially supported by your motherboard...that would explain the weird readings. I suggest you take the CPU off & examine the model number. There is no 2400+ desktop Barton, so if that number (2400+) is correct, you have a mobile CPU. Asus A7N8X-X 1800+ @8x210mhz 512mb PC3200 Ti4200/8X 128mb WDC 60GB

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You say my mobo doesnt support a barton, would a bios update fix this or not? i bought this chip on ebay: heres the details: AMD XP2400+ 'THORNTON' 266MHz FSB, 256K, L2 CACHE, SOCKET A PROCESSOR Thornton core are in fact Barton core processors but set to run at 266Mhz as opposed to 333MHz and with half the L2 cache removed (256KB as opposed to 512KB) This makes the new thornton processors the most overclockable on the market, as they can be run at 333MHz as they are a Barton core. Also the extra 256KB of L2 cache can be re-enabled by the enthusiast. There are many overclockers running their 2000+ Thorntons as high as 2.2GHz. So these 2400+ will go beyond that. NOTE: Any overclocking invalidates warranty. PART NUMBER AXDC2400DKV3C

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i just flashed my bios, no change though. Well instead of the pc booting up AMD UnknownDuron(tm) 2400, it now says AMD Duron(tm) 2400 instead!!

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Can you set the FSB at 133 now?

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Geez...if you knew it was a Thorton, why the F**k didn't you just say so to begin with? What a waste of time! Good luck...you're gonna need it Asus A7N8X-X 1800+ @8x210mhz 512mb PC3200 Ti4200/8X 128mb WDC 60GB

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Ok what the hell is a thornton?? barton?? thouroughbred?? at no point does any info ive read anywhere say. DONT BUY A THORNTON!! or otherwise. All i know, ive bought a 2400 AMD (NOT INTEL), Athlon (NOT DURON), XP (Not MP!), 266FSB (NOT 333FSB), pretty simple to me. So please enlighten me, what a thornton is?

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You knew that you had a Thorton all along but you waited til the 10 response to say so! That's a waste of my time & everyone else that tried to help... As for your question, "what the hell is a thornton??", you already answered that yourself... "Thornton core are in fact Barton core processors but set to run at 266Mhz as opposed to 333MHz and with half the L2 cache removed (256KB as opposed to 512KB)" Your motherboard does NOT support the Thorton, regardless of the fact it's a 266FSB CPU. It will not run properly & will not be properly identified because the BIOS doesn't contain any info about Thorton core XPs. Either get a CPU that's supported by your board...or get a board that supports a Thorton CPU...or struggle with what you have & continually ask why Asus A7N8X-X 1800+ @8x210mhz 512mb PC3200 Ti4200/8X 128mb WDC 60GB

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quote: You knew that you had a Thorton all along but you waited til the 10 response to say so! Hey after 10 posts, i wasnt even sure i had an Athlon let alone anything else. If it was so important for you to know, why didnt you ask? Even the cpuz report says clearly its a barton! (whatever the hell that is)

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