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Buy a Used "AMD Athlon II X3 450 95W Processor (ADX450WFGMBOX)" and save 43% off the $91.55 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee".
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Processor Series 
This is the name the manufacturer gives to a series of CPUs using the same technology. You will want to make sure your chosen CPU matches the type your motherboard is designed to accept.
Athlon II X3 Triple-Core 450
FX-Series Six-Core FX-6300
AMD Sempron
Athlon II X4 Quad-Core 640
Processor Speed 
Processor speed indicates how quickly the CPU can perform calculations. Higher speeds allow for faster calculations, meaning less wait time.
2.8 GHz
3.5 GHz
2.5 GHz
2.6 GHz
Number of Cores 
Many modern CPUs have multiple cores. The number of cores is the number of processors that make up the CPU. Having more cores allows the CPU to perform more calculations at once, meaning less wait time.
3
6
1
4
CPU Socket Type 
The socket type is the kind of connection used to mount the CPU to the motherboard. Intel and AMD each make their own types of sockets. You will want to make sure your new CPU socket type matches that of your chosen motherboard.
These little chips run very fast with tuning. Most are unlockable to 4 cores and they run fairly cool. Maxed out they are still quite a bit cooler than the PII X4's.
These little chips make great cpu's for all-around use and budget gaming too. Be aware though the stock heatsink is crap. Try a nice inexpensive TX3 with this and you have a great low cost combo.
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Replaced my Phenom X4 processor with the AMD Athlon II X3. This processor fit my socket AM2+ with no issues. The computer runs very fast now. I even upgraded my video card and can now run the newer high graphic games with no performance issues. Best part, this processor is CHEAP! Well worth the buy.
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All i have to say is wow. i am impressed. This processor runs super fast. destroys everything i throw at it. With certain motherboards you can unlock the forth core (which i did) and it becomes a phenom II x4 B45 processor. This processor performs better than the i3-2100,and it rates a 7.3/7.9 on the windows 7 rater. This little chip is great for gaming or business.Do not hesitate to buy this! you will not be disappointed!
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Perfect processor for a cheap gaming home-built pc. Comes with a cpu fan, 3 cores for triple the power and if your able to configure it you can unlock its hidden fourth core and turn this baby into a quad core processor.
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This is not the latest and greatest processor out there but it kicks the crap out of my old Athlon 64 single core. People have put the heat sync and fan down but I don't see any cooling issues on mine. Granted I haven't tried heavy duty gaming to really push it yet, but in watching HD videos, surfing the web, mixing audio/video the highest temp mine has reached is 46 degrees Celsius. That said, there are better coolers you can get, I'm sure.
I have also not overclocked this but can verify I was able to unlock the 4th core. I only did that temporarily because it did not unlock the Level 3 cache as well. It's not a true Phenom II on unlock without that. The extra core could also be unstable and because I am getting the speed I need now I don't need that extra core right now anyway. Maybe down the line I will look into doing it.
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First off I'd like to state that mine unlocked to a Phenom II X4 B50 without L3 and is such a Propus chip, so for all intents and purposed you can consider this an Athlon II X4. I paired this with an HD7850 for a mid range gaming build and performs excellently, playing every game I throw at it. In day to day usage it is very snappy and with 8GB of RAM I have only frozen of slowed this CPU down about 4 times in 10 months I've been using it, which is something I haven't been able to say for my Parents Pentium E5300 and my old Athlon II X2 270 which was clocked a tad higher at 3.4GHz. If you find the various Athlon II X3s (445,450,455) you choose the cheapest one as you con raise the clock speed quite easily, and since the voltages are the same temps should not increase. This is why I chose the 450 over the 455 as it was around 8-10 dollars cheaper. All in all, a great CPU for the money.
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Bought this to be able to play Minecraft atleast on Normal render distance and it did its job averaging 40+ FPS. Initially, I had a Radeon HD 5750 with a single core crap CPU and I tried playing Minecraft, but only averaged 10 FPS but when I plugged this baby in, WOW! Everythig was smooth and clear. but not enough to play it on FAR. For some reason it just doesnt want to go above 20 FPS but who cares, Normal is good enough for someone whos had to play on Tiny for 2 years.
Overall, I'm super happy with this super fast CPU. Not once has it ever gone above 75% usage on any core.
The reason why I gave it a 4 star is because of the fan and the heat sink. The heat sink is tiny and the fan, o boy, the fan. The fan seems to be grinding againsts something because it makes some sort of noise and it doesn't fast enough. I checked out the speed and only averages less than 1000 rpm's and get the CPU HOT!!!. I've had several occasions where I'd play some games and the whole computer shutting down because it just got too hot. So for now, I stopped playing games so it doesn't stress out the CPU. So what I'm doing is having to buy thermal paste and reuse my old fan for the CPU which does around 2000 rpm's and cools it down to a relatively low temperature.
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