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The good: If you have a compatible* laptop, this processor (M640) is the 2nd fastest you can possibly run. Only the M660 is faster, and even then only by 100mhz - so you're not missing out any noticeable performance vs. the often highest priced M660. The bad: Compatibility can be confusing. The socket these processors use (Socket S1) basically went through 4 generations, you will want to be very sure what "generation" of processors your laptop supports. The "Turion II Ultra" line uses S1g3 (socket S1 gen 3). Just make sure to do some research before blindly buying a given "Socket S1" processor. The ugly: Installation - be sure to find and READ the service guide for your laptop and what you will need to disassemble to upgrade the processor. Unlike a memory or SSD upgrade, most laptops don't have a nice cover or door you pop open and easily slot in your new processor. Expect that you'll probably have to completely tear down your laptop down the the motherboard, which is about as fun as it sounds (it's not). Lastly don't forget to grab some thermal paste! After you spend that quality 2 hours re-assembling your laptop, wondering where those "extra" 2 screws went - the last thing you want is for the laptop to overheat because you forgot the thermal paste!Read full review
Verified purchase: Yes | Condition: New
Processor was part of a series of upgrades/repairs for a 10 yr old Toshiba L505D-LS5007 motherboard with AMD graphics. Comparisons are against a Turion II 520M. Wireless networking and bluetooth were performed by an upgrade to the Qualcomm Atheros (QCA 9377)Wireless AC card (Almost 10 times the speed vs the old 54Mb/S card) for all tests. Ram was upgraded to 8GB of 800 Mhz DDR2 for all comparisons. Hard drive is a Sandisk 1GB SSD Sata 3 ~ 540 MB/Sec transfer max. -------------------------------------------------------------------------------- The advantage of the Turion II Ultra 640M was the slight increase in operational speed (2.6 Mhz) and 4x the CPU cache vs the Turion II M520 (2.2 Mhz). The 640M worked well but I didn't really see that much of an improvement over the Turion II M520 in the orginal system with the Passmark tests under Windows 10 Pro. Under Windows 7 home/32 bit the system is much quicker. The biggest improvement however was a 10+ degree celsius drop in average operating temperature. The 640M did run a degree hotter while under stress to 86C. However the average operating temperature dropped to 63C instead of 76C. This will mean a lot to the processor lifetime and board components. Another thing that I did notice was that response time decreased for the mouse and keyboard on the system after the processor upgrade. No more lag in responding to keystrokes or mouse clicks. Additionally less lag time with video movies occured and the jerky picture disappeared when running under the M640 with 720 dpi graphics. This computer has no FHD support on the built in screen so 720 dpi is its max. Had absolutely no install issues with this processor to the motherboard. Windows 10 however took 2 cold reboots to properly recognize. Upgraded bios recognized processor immediately. The upgrades have made it able sail smoothly across the internet as well as making it much better for retrogaming.Read full review
Verified purchase: Yes | Condition: New
So I decided to get this since the old CPU like this one which is 2.4 GHz M600. I wanted to give my DV7-30079wm laptop (used to be Moms) an upgrade/new CPU since the old one is shot, still works but overheats very easily. When I replaced the CPU, my laptop has been working like new. Processing speed is more quicker, with the SSD installed it helped a lot more. This CPU made a huge difference! If only I had pictures to prove it, of course I forgot while upgrading.
Verified purchase: Yes | Condition: New
Used this to upgrade an old dv7-3128a. Hardest part was tearing apart the laptop. Went in easy an works great so far.
Verified purchase: Yes | Condition: New
nothing unusual. only random reads and writes are accelerated.
Verified purchase: Yes | Condition: New
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