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  • Corsair XMS3 12GB (3x4GB)  DDR3 1333 MHz (PC3 10666) Desktop Memory (CMX12GX3M3A1333C9)
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Corsair XMS3 12GB (3x4GB) DDR3 1333 MHz (PC3 10666) Desktop Memory (CMX12GX3M3A1333C9)

by Corsair

List Price: $165.99
Price: $139.99 & FREE Shipping. Details
You Save: $26.00 (16%)
Only 10 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
12 GB
  • Three matched 4GB modules for use in high performance for the Intel Core i7 Triple Channel systems
  • Voltage: 1.5V
  • Speed: 1333MHz
  • Timing: 9-9-9-24
  • Density: 12GB (3x4GB Module)
  • Intel XMP (Extreme Memory Profile) support
  • Limited Lifetime Warranty
  • Pin Out: 240 Pin
10 new from $139.99

Frequently Bought Together

Corsair XMS3 12GB (3x4GB)  DDR3 1333 MHz (PC3 10666) Desktop Memory (CMX12GX3M3A1333C9) + Samsung Electronics 840 EVO-Series 250GB 2.5-Inch SATA III Single Unit Version Internal Solid State Drive MZ-7TE250BW + Silverstone Tek 3.5-Inch to 2 X 2.5-Inch Hard Drive HDD SSD Bay Converter, Silver (SDP08)
Price for all three: $276.97

Buy the selected items together



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This item: Corsair XMS3 12GB (3x4GB) DDR3 1333 MHz (PC3 10666) Desktop Memory (CMX12GX3M3A1333C9)

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Customer Rating 4.5 out of 5 stars   (389) 4.7 out of 5 stars   (428) 4.7 out of 5 stars   (60) 4.7 out of 5 stars   (58)
Price $139.99$165.97$84.99$143.47
Shipping FREE Shipping$27.00FREE ShippingFREE Shipping
Sold By Amazon.comGiino-USAmazon.comAmazon.com
Total Size  This is the total capacity of the RAM in the package. Most users will find 4 GB to be sufficient, though you will want more if you plan to play a lot of 3D games or do video and audio editing. 12 GB Information not provided 8 12 GB
Number of Packages  The number of individual packages included in the product. Bulk products may contain more than one. 1 1 1 1
Memory per Stick  This is the memory capacity of each stick in the package. 12 GB 4 GB 8 GB 12 GB
Number of Pins  The number of pins dictates which kind of slots in which the RAM sticks can be mounted. You will want to make sure that the RAM you buy has the number of pins that your motherboard is designed to accept. 240 240 240 240
Memory Clock Speed  This is the speed at which data can be written to and read from the RAM. Higher clock speeds allow for faster access to data, meaning less wait time. 1333 MHz 1600 MHz 1600 MHz 1600 MHz
Memory Technology  RAM comes in two main types: SO-DIMM, used in laptops and small computer systems; and DIMM, used in desktop PCs. Both primarily use DDR technology, which comes in three types: DDR, DDR 2, and DDR 3. You will want to make sure to buy RAM matching the type your motherboard will accept. DDR3 SDRAM DDR3 SDRAM DDR3 SDRAM DDR3 SDRAM
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Technical Details

Size: 12 GB
  • Model: CMX12GX3M3A1333C9
  • Item Package Quantity: 1
  • RAM Memory Technology: DDR3 SDRAM
  • Form Factor: Desktop
  • Memory Storage Capacity: 12 GB
  See more technical details

Product Details

Size: 12 GB
  • Product Dimensions: 7 x 4 x 0.5 inches ; 5.6 ounces
  • Shipping Weight: 5.6 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B004F9FKNY
  • Item model number: CMX12GX3M3A1333C9
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (389 customer reviews)
  • Date first available at Amazon.com: January 14, 2011
  •  Would you like to update product info, give feedback on images, or tell us about a lower price? .


Product Description

Size: 12 GB

Corsair’s mainstream memory solution 12GB (3x4GB) 1333MHz 9-9-9-24 for Intel Core i7 triple channel memory processors. The XMS3 family is Corsair’s mainstream line of performance DDR3 memory. These modules allow users to experience outstanding memory performance and stability. Available in Corsair’s XMS heat spreaders, each module is built using carefully selected RAMs.

Customer Questions & Answers

Customer Reviews

Once the ram sticks were removed I never got the blue screen again.
S. Leach
In my opinion that's all it is you cant really get Faster ram that will make your PC awesome it just does it job.
dylan
It was easy to install, recognized by the BIOS immediately and works like a charm.
Patrick J

Most Helpful Customer Reviews

31 of 33 people found the following review helpful By Tech Friendly on November 19, 2010
Size Name: 8 GB Verified Purchase
This is the best deal on the web. Fast & Stable, overclockable to 1600Mhz, and Corsair tech support is helpful and knowledgeable. Best ram purchase I've made in nearly 10 years. At $125.99 from one of these seller, I brought 2 boxes of these ram sticks to future proof my system for the price of 8GB of RAM anywhere else.

My system: AMD X6 Thuban Black edition overclocked to 4.2GHz
Asus Crosshair IV Mobo
Asus 5870 V2 overclocked to 1000 MHz core clock ASUS Radeon HD5870 1 GB GDDR5 PCI-Express Graphics Card EAH5870/G/2DIS/1GD5/V2
Corsair 16 GB Ram overclocked to 1600MHz
10.5 Terabytes of Hard Drive space
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21 of 21 people found the following review helpful By DMJ on February 17, 2011
Size Name: 8 GB Verified Purchase
Hi, I got this ram for a Core i7 875K rig. Works perfectly @ 1333 9-9-9-24 speeds. Remember you have to enable XMP or else it will default to 1066 Mhz speeds. I can't wait to buy another 8GB!
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18 of 20 people found the following review helpful By Amazon Customer TOP 1000 REVIEWERVINE VOICE on April 11, 2011
Size Name: 8 GB Verified Purchase
There are lots of good reviews on this product, I just wanted to add that it works on my MSI 790GX-G65 and an AMD Phenom II 965 Black Edition. I'm using it with 4GB of Corsair (same model but less capacity), for a total of 12 Gb. No problems - just install and let it rip! I am not overclocking anything, and the CPU cooling is stock.

EDIT: I am now using this with an ASUS Sabertooth 990 FX motherboard and AMD Phenom II X6 1100T, and it works fine.
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9 of 9 people found the following review helpful By Dave on September 20, 2011
Size Name: 12 GB Verified Purchase
My Dell 9100 had 6 x 2GB memory which I chose to upgrade to 6 x 4 GB, admittedly overkill, but I deal with large graphics files, often open contemporaneously in Photoshop CS5 and when edited, frequently, in 16 bit color, reach over 1 GB in size. Also, I often work with Illustrator open at the same time, so memory resources can be challenged. With large amounts of RAM, less is relegated to the much slower virtual memory on the hard disk.

When I installed the two 3 x 4 GB kits, the computer booted normally and worked well in all respects, both cold and hot; however, interestingly, the memory(as a whole) did not pass the Windows 7 Memory Diagnostics test. I'm not sure what this means since usually faulty memory causes crashes or will not even allow the machine to boot. I did not try the "memory dance" to isolate which sticks were perhaps suboptimal, but rather I decided to return the whole order as defective and request a replacement. I have to congratulate Amazon for facilitating the exchange, mailing out the replacement memory within one business day with no shipping charge, and accepting the return their prepaid shipping via UPS to them.

The replacement memory also functioned perfectly normally, and passed the diagnostics as well, so I suspect there was probably some minor defect in one or more of the initial modules which might have more likely led to failure down the line, but I do not know that for certain.

Corsair is a first line brand of memory so that customers should not feel that this ridiculously low price is indicative of "bargain basement" type of hardware. Any batch of RAM can have an occasional bad module, and is no reason to demote the value of the product.
Read more ›
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9 of 9 people found the following review helpful By Donkeychong on March 23, 2011
Size Name: 8 GB Verified Purchase
Well packaged. Both my chips worked. Feels solid. Love the metal covering heat sinks. Great price. Make sure you fit them well into your motherboard. I ran into a issue. Windows recognized all 8Gbs, but said only 4Gbs usable. The problem was because I didn't fit one chip all the way into my motherboard.
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7 of 7 people found the following review helpful By D.R. Maddock on September 12, 2010
Size Name: 8 GB Verified Purchase
The sticks are a little fat, so they take up some space, but they should go in with no problem. They're supper fast. It brought my rig up to 12GB of ram and I have yet to notice lag in any game.
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9 of 10 people found the following review helpful By 1rareAsian on January 10, 2011
Size Name: 8 GB Verified Purchase
I purchased in 2 weeks before the price dropped $20 but the quality of these are good. No errors or issues in my Mac Pro yet.
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6 of 6 people found the following review helpful By Kindle Customer on November 3, 2010
Size Name: 8 GB Verified Purchase
They worked fine right out of the box. Windows 7 Ultimate x64 with Core i3 540 gives them a 7.0 rating if it means anything to anyone. Quality ddr3 ram for a very good price.
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