Well, we can keep this fairly straightforward...if you have a proprietary computer (ie: Compaq, Gateway, Dell, Hp...etc) this 920 and the 940 are the ONLY quad core chips that can be used in an AM2+ motherboard to upgrade to Phenom II (the discontinued tri core chips can be used too). If you build your own then you may obtain Bios updates to allow AM3 chips to run in A2+ boards and have many superior options (965, 955) to upgrade...most large computer companies want you to buy a new computer rather than simply upgrade and so will not release any Bios updates for upgrading...for example you cannot use an ASUS bios on an ASUS motherboard branded by Compaq. You need to have a Phenom II AM2+ chip and AMD only made two of them in quad core. I opted for the 920 as prices for the 940 are already high, everyone seems to want the ultimate upgrade...for a 45% difference in cost, 2.8 Ghz is almost as good as 3.0 Ghz and this one is more than twice faster than the stock Phenom I X3 my HP box came with that I bought refurbished... Be sure your board can handle 125 watts as these chips can run hotter under full load but the "Cool and Quiet" function will save power in the long run.(Unless you are running high load all the time). You can look at the specifics of these cpus on the AMD website, even though if you are sure about upgrading...you can then make your choice between these 2 discontinued models, go with a cheaper less powerfull 720 tri core Phenom II, or buy a whole new computer...a simple choice to me, as DDR3 is currently only incrementally better than DDR2 and a 925 or 945 run similar speeds just use AM3 and use 95 watts. Buy it while you can as AMD will not make any more of these and you will be stuck with Phenom I (actually not bad cpus really, just compared to Phenom II they are so much slower...)or be forced to buy a whole new AM3 computer... This review was almost longer than I wanted this to be...If prices for purchasing were equal get the 940, but if the supply and demand continue to trend similar then the 920 should be the better deal (if you are really strapped by budget then perhaps a 720)...after all if you were swimming in money, you could buy a new computer every year and give the other away...instead of looking for last years discontinued chips in order to let your computer keep up for a few more years like the rest of us budgeted people do... Enjoy life and the upgrade... RRead full review
When I received my Dell Inspiron M5010 there was something about the system that wasn't quite right. After much checking of system components and reinstalling software,I thought I'd figured that is was a software conflick that was causing the freezes and slow responses.Then after reading several forums decided that it was that the processor/ram combination might be the problem. Then I found this AMD Phenom II 2.8 GHz X920 black edition 4 core notebook processor at a very fair price on EBay from Star Micro Inc. of Fremont CA. It in combination with a ram upgrade to 8 Gig's totally cured the problems. I tried the ram up grade several weeks before,it helped but not enough to cure the bottleneck. The X920 did the job. If you need the power of 2.8 GHz in a 4 core processor,find the site on EBay(or where ever)and buy it. I don't think you can go wrong,of course remember you may void your warranty. By the way the processor is unlocked so if you can get into your bios or you have tweaking software,you can tweak it abit. Overall AMD produces a great processor for the money. Yes,Intel is a little faster with the newer processor's,but when you compare value to proformance,AMD win's. My billfold agrees too.Read full review
Great laptop S1G4 cpu. The four cores at 2.3GHz provides plenty of power. However, its 45w TDP (shows up at slightly over 40w in HW monitor) makes your laptop cores run hot if you don't have adequate cooling. My medium sized laptop's x4 920 ran at ~60'C idle and 85'C load. However, I was able to undervolt by setting idle voltages at .70v to .75v and load volts at .95v to 1.0v.
works without a problem came with huge heat sink and fan....... connected to motherboard and hit the power button took off like a bat out of H##l awsome!!!!!!!
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