Hi, i need help with 2 cpus, am about to sell one and want your advice of which of them is better to keep: here's te report of cpu-z: (note that cpu1 was tested in a pcchips mobo with 128ram and cpu2 in a foxconn 400m with 256ram) ------CPU1------ CPU(s) Number of CPUs 1 Name AMD Athlon XP-M Code Name Thoroughbred Specification mobile AMD Athlon(tm) XP-M 1400+ Family / Model / Stepping 6 8 1 Extended Family / Model 7 8 Package Socket A Core Stepping B0 Technology 0.13 um Supported Instructions Sets MMX, Extended MMX, 3DNow!, Extended 3DNow!, SSE CPU Clock Speed 1340.9 MHz Clock multiplier x 9.0 Front Side Bus Frequency 149.0 MHz Bus Speed 298.0 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 256 KBytes, 16-way set associative, 64 Bytes line size L2 Speed 1340.9 MHz (Full) L2 Location On Chip L2 Data Prefetch Logic yes L2 Bus Width 64 bits Mainboard and chipset Motherboard manufacturer ECS Motherboard model M825VXX, 3.1 BIOS vendor American Megatrends Inc. BIOS revision 07.00T BIOS release date 04/02/01 Chipset VIA P4M266/KM266 (VT8375) rev. 00 Southbridge VIA VT8235 rev. 00 Sensor chip ITE IT8705 Graphic Interface AGP AGP Status enabled, rev. 2.0 AGP Data Transfer Rate 4x AGP Max Rate 4x AGP Side Band Addressing not supported, not enabled Memory DRAM Type DDR-SDRAM DRAM Size 128 MBytes DRAM Frequency 149.0 MHz FSB:DRAM 1:1 DRAM Interleave none CAS# Latency 2.5 clocks RAS# to CAS# 3 clocks RAS# Precharge 3 clocks Cycle Time (TRAS) 6 clocks # of memory modules 1 Module 0 DDR PC2700 - 128 MBytes -----CPU2----- CPU(s) Number of CPUs 1 Name AMD Athlon Code Name Thunderbird Specification AMD Athlon(tm) processor Family / Model / Stepping 6 4 4 Extended Family / Model 7 4 Package Socket A Core Stepping A9 Technology 0.18 um Supported Instructions Sets MMX, Extended MMX, 3DNow!, Extended 3DNow! CPU Clock Speed 1329.5 MHz Clock multiplier x 10.0 Front Side Bus Frequency 132.9 MHz Bus Speed 265.9 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 256 KBytes, 16-way set associative, 64 Bytes line size L2 Speed 1329.5 MHz (Full) L2 Location On Chip L2 Data Prefetch Logic no L2 Bus Width 64 bits Mainboard and chipset Motherboard manufacturer Motherboard model KM400-8235, BIOS vendor Phoenix Technologies, LTD BIOS revision 6.00 PG BIOS release date 04/08/2004 Chipset VIA KM400 rev. 00 Southbridge VIA VT8235 rev. 00 Sensor chip Winbond 3C02 Graphic Interface AGP AGP Status enabled, rev. 2.0 AGP Data Transfer Rate 4x AGP Max Rate 4x AGP Side Band Addressing supported, enabled Memory DRAM Type DDR-SDRAM DRAM Size 256 MBytes DRAM Frequency 166.3 MHz FSB:DRAM FSB + 33 MHz DRAM Interleave 4-way CAS# Latency 2.5 clocks RAS# to CAS# 5 clocks RAS# Precharge 3 clocks Cycle Time (TRAS) 7 clocks # of memory modules 1 Module 0 SpecTek Incorporated DDR PC2700 - 256 MBytes --------- thats it, the idea is to change the processor of cpu1 to mobo2 foxconn, cause the integrated video is a lot better, i want to know which of this two cpus is better and why... pls, of course i'll keep the 256mb module in the foxconn mobo but... which processor? is your decision. and if you can explain me why the cpu1 is working at multiplier x9 and cpu2 at multiplier x10 (will because the memory module???) thanks i advance. Mobo: Intel 865PERL Chipset: Intel® 865PE CPU: Intel P4 Northwood 3.0 GHZ / 800mhz FSB RAM: 512MB DDR-SDRAM / 400 Mhz Video: nVidia GEFORCE4 MX 128MB Audio: SoundMax 3D Audio

CPU #1 is the better of the two. It's a mobile CPU designed for use in laptops & is based on the Thoroughbred core. Because it's an XP-M (M= mobile), it runs at lower default voltage & the CPU multiplier is 100% unlocked. That means it's an excellent overclocker provided you have the right board. Just make sure the Foxconn board you install it in supports multiplier, FSB, & voltage adjustments...otherwise, the multiplier will default to the lowest the board supports & you'll be screwed. The 2nd CPU is an Athlon "classic" based on the older Thunderbird core. The CPU multiplier is most likely locked at 10x & cannot be changed. Your 1st system is setup with the CPU:DRAM ratio at 1:1 (150MHz:150MHz) - that's how it should be. Actually the CPU is overclocked...you do realize that, right? Your 2nd system has the CPU:DRAM ratio at "FSB + 33MHz"...in other words, 133MHz:166MHz. That configuration is NOT optimal.

hi jam, this is the second time you help me in something like this. am terrible sorry but today i take off the coolers of the two processors and realize the packages are COMPLETELY DIFFERENT, the cpu2 is a normal socket a but cpu1 is a (i think) a 754 package (really dont know but looks very small, like a P4 processor), nothing i can do since the cpu1 is tightly solded to the mobo, even the 128ram is solded too, there´s no sockets at all... it must be one of the old combos came out some years ago. Sorry for the waste of time. But you're talking about fsb+33mhz, well dont know so much at the respect but this is a default configuration of the bios, since the battery is dead, (f1 at startup) these settings are loaded by default, why this setting is not optimal? what can I do, because i definitively will keep the cpu2 with 256mb and foxconn mobo, the other will do a trip to the trash can. Pls tell me more about fsb+33. Thanks in advance PD. the cpu2 works overclocked til 1450mhz, but the system becomes unstable and the famous error IRQ NOT LESS OR EQUAL appears very often. so I dont like do overclock in this system in particular, the others... no problem. Mobo: Intel 865PERL Chipset: Intel® 865PE CPU: Intel P4 Northwood 3.0 GHZ / 800mhz FSB RAM: 512MB DDR-SDRAM / 400 Mhz Video: nVidia GEFORCE4 MX 128MB Audio: SoundMax 3D Audio

The 1st thing you need to do is replace the CMOS battery in the Foxconn motherboard so that you don't have to keep changing the BIOS settings. Either that, or if you never shut it down, the BIOS settings will stay as set. The XP-M is looks different that the other CPU because it's a mobile CPU plus it has a different core. Does it look similar to this one? (read the note on the bottom about the socket type) http://www.cpu-world.com/Images/upl... Here's some info about the board/CPU combo: http://forums.pcpitstop.com/lofiver... Why would you trash it? It's still a good setup for a Win98 machine or possibly Linux? As for the overclocking problems with the Foxconn setup, it's because you're not overclocking it correctly. And the reason the RAM is currently running at "FSB + 33MHz" is because you're running BIOS defaults instead of manually configuring the settings for best performance.

yep jam, that is the chip, small he? about the trashing, was a joke :) i'll try the setting for overclocking this machine correctly, but you did'nt tell me why is better the 1:1 ratio :) am learning a lot with you... thanks Mobo: Intel 865PERL Chipset: Intel® 865PE CPU: Intel P4 Northwood 3.0 GHZ / 800mhz FSB RAM: 512MB DDR-SDRAM / 400 Mhz Video: nVidia GEFORCE4 MX 128MB Audio: SoundMax 3D Audio

"you did'nt tell me why is better the 1:1 ratio" Try these dumb analogies on for size: CPU freq higher than memory freq: You & a friend are gonna go somewhere & he'll be driving. You're really psyched about going & can't wait to leave, but he's dragging his a$$. You get pi$$ed... Memory freq higher than CPU freq: You & a friend are gonna go somewhere & you'll be driving. He's really psyched about going & can't wait to leave, but you're dragging your a$$. He gets pi$$ed... CPU & Memory run at same freq (1:1 ratio): You & a friend are gonna go somewhere & you're gonna share the driving. You're both equally psyched about going & can't wait to leave. Everything's cool, no probs whatsoever, you have a great time together!