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  • AMD Phenom II X4 840 Edition Deneb 3.2 GHz 4x512 KB L2 Cache Socket AM3 95W Quad-Core Processor - Retail HDX840WFGMBOX (Black)
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AMD Phenom II X4 840 Edition Deneb 3.2 GHz 4x512 KB L2 Cache Socket AM3 95W Quad-Core Processor - Retail HDX840WFGMBOX (Black)

by AMD
| 9 answered questions

Available from these sellers.
  • Multi-Core: Quad-core
  • Operating Frequency: 3.2GHz
  • Socket: AM3;
  • Power: 95W, Cache: 2MB
  • 3.2 ghz; 2MB Cache
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Technical Details

  • Brand Name: AMD
  • Model: HDX840WFGMBOX
  • Processor Count: 4
  • Warranty: Manufacturer Limited Warranty period: 3 years Link: http://support.amd.com/us/warranty/Pages/Processorinabox3YearLimited.aspx

Product Details

  • Product Dimensions: 3 x 5 x 4.5 inches
  • Shipping Weight: 8.8 ounces
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B004LRO9B4
  • Item model number: HDX840WFGMBOX
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (29 customer reviews)
  • Date first available at Amazon.com: January 31, 2011

Product Description

Product Description

AMD Phenom II X4 840, 95W, AM3, 2MB Cache, 3200MHz

From the Manufacturer

AMD Phenom II X4 840, 95W, AM3, 2MB Cache, 3200MHz

Customer Reviews

4.7 out of 5 stars
5 star
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4 star
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See all 29 customer reviews
Good bang for the buck.
David L. Cutler
Since I'm not a big time gamer, this system works just fine for me, although some tweaking may make it better.
Philip M. Holdsworth
While it has no L3 Cache, it does come stock at 3.2ghz, which alone makes this a great deal.
Dustin M.

Most Helpful Customer Reviews

37 of 37 people found the following review helpful By Brian R. TOP 500 REVIEWERVINE VOICE on March 11, 2011
I just used this processor in a build for my father-in-law. As I researched processors, this one stood out for the price/performance ratio. If you're looking to build a computer with a reasonable budget and performance that will fit average needs for the next several years, this is the processor to get. Stepping down to a dual core will only save you $15-25, and stepping up to other quad cores or 6-cores will cost you a premium compared to the performance gain (which you probably won't even notice for most home-user tasks).

While benchmarks don't tell everything, they can at least give you a general idea of where a processor rates compared to others on the market. Compared to others in the $85-$110 range, this one seemed to stand out because:
*It's a Phenom II AM3 socket vs. an Athlon2 or a Phenom II Dual core
*It's Quad Core vs. Dual core
*It's lower wattage than comparable Quad-cores in this price range
*To step down to a dual core didn't really save all that much money.

While this isn't the "Black Edition", I don't plan to overclock it, so that wasn't a factor for me. I built myself a computer a couple years ago using a AMD HDZ940XCGIBOX Phenom II X4 940 Black Edition 3.0GHz Cache 8MB AM2+ 125W Processor - Retail and have never even bothered with it. I did use a dual core in a build for my wife's grandma, and this is a perfectly fine option if you're trying to shave every dollar off the cost. In fact, saving $25 on a processor and using it toward more RAM might be a better choice if you're just using email and surfing the occasional webpage like she does.
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7 of 7 people found the following review helpful By Joekerr1 on May 20, 2011
Verified Purchase
I had my son set up on an older nForce Abit board with a Phenom 9850 Quad-core (125watt). The CPU was always running hot and just never seemed to run right.
I ended up using this CPU with a nForce MSI NF750-G55. This CPU is only 95 watts so it runs cool and quiet. There is no L3 Cache, but at 3.2 Ghz, it doesn't seem to make a difference
compared to the older 9850 at 2.5 Ghz. The lack of L3 cache shows it is basically a faster Athlon X4, but they still call it a Phenom. Its been up for several weeks with zero problems.
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5 of 6 people found the following review helpful By bob on May 8, 2011
Verified Purchase
It is a great CPU for the price. Two things though.....it is actually an Athlon processor with a great publicist (has Propus core making it a very close relative of the Athlon II 650....not the rest of the phen II clan). The other thing is....No L3 cache. It shows a bit, but not enough to make it important, unless you are a hard core gamer. (L3's main function is to cut down on bottlenecks/delays between ram and cpu. The idea is that the L1 cache is smaller and has quick instruction sets ready to guide the execution of cpu requests to the ram. It leaves a frame of the request open at the edge of the cpu, empty. When the data (datum)gets there from the ram it slides it into the frame and is directed to the target in the core (or executed). These instruction sets build the frame. If the CPU can't find the instructions in L1 it looks to the slightly larger, slightly slower L2......and then for larger more complex instruction sets it looks to the........whoops, no L3 present. What is also notable here is that in many cases the L3 is shared by multi cores. This allows for a more cohesive movement of larger pieces of data that can be broken down and sent through multiple paths...then reassembled)

However, for the price this is one hell of a cpu. Strongly recommend.

{There is a lot more to the whole cache deal. The thing is...when there is a cache 'miss', or the address/index/tag cache line cannot be found to read/write/overwrite into (what I loosely referred to as 'the frame') latency occurs, and it doesn't matter if it is a data set or instruction set. With the speeds of the newer cores....cache is extremely important as it has to be much faster than the ram to keep up with the core.
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3 of 3 people found the following review helpful By David L. Cutler on May 4, 2011
Verified Purchase
Needed something that would fit the limitations of my motherboard AM2+ 95W. This fit the bill and has worked flawlessly. It comes with OEM fan which I did not use, preferring my much more robust aftermarket cooling. Good bang for the buck.
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1 of 1 people found the following review helpful By David Stanley on December 13, 2011
Verified Purchase
I really needed to update my aging dual core inside an HTPC box with a 350 watt PSU and energy hungry video card. I wanted a lower voltage Phenom II x4 and this one filled the bill. I was able to keep the DDR2 memory and mother board. (I know selling the CPU short but it held the price down.) This CPU is no i7 but it sure does the trick for watching DVD's streaming video and the other things I use an HTPC for. If this sounds like you this is a great buy.
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1 of 1 people found the following review helpful By kvetch on December 11, 2011
I don't have much more to add to the fine things that everyone has been saying. I'm running the Phenom II x4 840 with an Asus M5a97 EVO board, and 8 gigs of Kingston KHX 1600 ram (2 x 4). Thing is, I got the processor at MicroCenter for $60, and afterward they sent me a set of coupons for 10% off on a box, power supply, video card, and memory. So if it was a good deal at $114/119, it's even better at half that price.
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