Upgrade 667MHz FSB CPU Tags: CPUs BIOS Processors Last response: June 7, 2010 2:12 PM in CPUs Share ensefik June 4, 2010 7:42:45 PM Hello, I wish to upgrade the processor on my Toshiba P205-S6347 which has a Santa Rosa GM965 chip-set with a T5450 cpu running at 1.66GHz 667MHz FSB I am not sure if because of the T5450 cpu, my laptop's FSB has been scaled down from 800MHz to 667MHz , and if so, by using a 800MHz cpu and BIOS changes, the FSB can resume at 800MHz. I have read that the motherboard FSB might be upgradeable via the BIOS so that I can look for 800 MHz FSB CPUs >= 2.40GHz. Does anyone have any experience of doing something like this? More about : upgrade 667mhz fsb cpu das_stig a c 103 à CPUs June 4, 2010 8:56:26 PM Even if you could upgrade the cpu, you would probably cause serious heat issues as the design of the cooling is for specific speed/family of cpu's and anything else is taking a risk. If you do plan to do it, make sure cpu runs at 1.66Ghz to keep temps in spec and you'll have to swap your memory to get the full benefit of a fsb increase. ensefik June 7, 2010 2:12:21 PM das_stig said:Even if you could upgrade the cpu, you would probably cause serious heat issues as the design of the cooling is for specific speed/family of cpu's and anything else is taking a risk. If you do plan to do it, make sure cpu runs at 1.66Ghz to keep temps in spec and you'll have to swap your memory to get the full benefit of a fsb increase. Good point about the running temperature, though a lot of the 800MHz FSB intel chips are at 45nm and run cooler than the 65nm 667FSB chips of lower GHz range. I am still wondering about the FSB changing from 667->800 via the BIOS, does anyone have any experience here with laptops Can't find your answer ? Ask ! Publish Related resources Solved1600 RAM showing max bandwidth in CPU-ID as 667mhz? Forum 667mhz RAM with 800mhz FSB? Forum 800MHz FSB with 667MHz DDR2 SDRAM? Forum Big difference between 800MHz FSB and 667MHz? Forum P3 667Mhz 133FSB on a P2B Forum SolvedCPU-Z reports that a DDR3 1333 Memory is capable of going upto 667Mhz! Forum Upgrade cpu - fsb issue Forum E5200 CPU Upgrade For My Dell Dimension 5100 (800Mhz FSB) Forum Help CPU upgrade question P4 socket 478 400 FSB 1.6 to 2.6 ? Forum CPU Upgrade Vectra 6/xxx Series 8 100MHz FSB - Jumper Sett.. Forum Solved1066fsb CPU in a 800 system? Forum SolvedCPU GHz / FSB Speed / Cache Forum Is it worth upgrading a P2 400 MHz CPU with 100MHz FSB PC? Forum Questions about Mobo/cpu/ram FSB's Upgrading system? Forum Motherboards and CPU Upgradeability (1333 FSB useful?) Forum SolvedBest 800MHZ FSB DUAL/QUAD CORE CPU Forum SolvedNew build - Bus speed & FSB in CPU-Z Forum SolvedCan 800FSB CPU WORK ON 533FSB MOBO? Forum SolvedFSB questions cpu and motherboard Forum SolvedComputer won't boot/POST (No bios displays) with CPU FSB 533 and RAM DDR3-1333? Forum More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !