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 667mhz RAM with 800mhz FSB? Forum Solved1600 RAM showing max bandwidth in CPU-ID as 667mhz? 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 SolvedMobo FSB and CPU FSB. Do they need to match? 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 More resources Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !