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  • Corsair XMS2 DDR2 4GB (2x2GB) PC2-6400 800MHz 240-Pin Dual Channel Desktop Memory (TWIN2X4096-6400C5C)?
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Corsair XMS2 DDR2 4GB (2x2GB) PC2-6400 800MHz 240-Pin Dual Channel Desktop Memory (TWIN2X4096-6400C5C)?

by Corsair
| 12 answered questions

List Price: $85.99
Price: $74.99 & FREE Shipping. Details
You Save: $11.00 (13%)
In Stock.
Ships from and sold by Amazon.com. Gift-wrap available.
  • The XMS brand family is Corsair’s mainstream line of performance memory
  • These modules allow users to experience outstanding memory performance and stability.
  • Two matched 2GB modules for use with AMD and Intel DDR2 systems
  • Latency of 5-5-5-18 for maximum reliability and performance
  • Industry Leading Lifetime Warranty
44 new from $74.99 5 used from $40.00

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Frequently Bought Together

Corsair XMS2 DDR2 4GB (2x2GB) PC2-6400 800MHz 240-Pin Dual Channel Desktop Memory (TWIN2X4096-6400C5C)? + WD Blue 1 TB Desktop Hard Drive: 3.5 Inch, 7200 RPM, SATA 6 Gb/s, 64 MB Cache - WD10EZEX + Windows 7 Home Premium SP1 64bit, System Builder OEM DVD 1 Pack (New Packaging)
Price for all three: $232.98

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  • Buy Used and Save: Buy a Used "Corsair XMS2 DDR2 4GB (2x2GB) PC2-6400 800MHz 240-..." and save 53% off the $85.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.
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Kingston 8 GB DDR2 SDRAM Memory Module 8 GB (2 x 4 GB) 667MHz DDR2 SDRAM KTH-XW667/8G

Customer Rating 4.4 out of 5 stars   (245) 4.3 out of 5 stars   (266) 4.7 out of 5 stars   (413) 1.9 out of 5 stars   (7)
Price $74.99$56.99$53.99$57.50
Shipping FREE ShippingFREE ShippingFREE ShippingFREE Shipping
Sold By Amazon.comAmazon.comNVLOOKWHOLESALE TAG
Total Size 2 Information not provided 4 Information not provided
Number of Packages 1 1 1 1
Memory per Stick 2 GB 2.0 GB 4 GB 8 GB
Number of Pins 240 240 240 240
Memory Clock Speed 800 MHz 800 MHz 800 MHz 667 MHz
Memory Technology DDR2 SDRAM DDR2 DRAM DDR2
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Technical Details

  • Model: TWIN2X4096-6400C5C
  • Item Package Quantity: 1
  • Hardware Platform: Pc
  • RAM Memory Technology: DDR2 SDRAM
  • Form Factor: Desktop
  See more technical details

Product Details

User Guide [115kb PDF]
  • Product Dimensions: 7.4 x 4.8 x 0.3 inches
  • Shipping Weight: 0.3 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B0027P9C9G
  • Item model number: TWIN2X4096-6400C5C
  • Average Customer Review: 4.4 out of 5 stars  See all reviews (245 customer reviews)
  • Date first available at Amazon.com: April 2, 2004

Product Description

Corsair’s mainstream memory solution for the Intel and AMD dual channel DDR2 memory processors and platform. The XMS2 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 new XMS heat spreaders, each module is built using carefully selected RAMs. Simply pop in this 2GB 800MHz CL5 DDR2 memory kit into your system and see the difference in performance. If you are looking for extra performance or reliability in your Intel or AMD DDR2 system, the Corsair 2GB 800MHz DDR2 memory kit offers this solution! Why Choose Corsair? Corsair Memory, is designed and tested to ensure 100% Compatibility with today’s current motherboards. Every stick of RAM is qualified to meet Corsair’s exact specifications. After a rigid tests and inspections, every memory module is then shipped individually in anti-static packaging for protection during transport. The Result: Guaranteed compatibility with your motherboard or your DDR2 PC, and no defective product, giving you quality memory that will keep working and working, providing a faster PC for a greater experience with your Desktop and motherboard! More importantly, Corsair stands behind every module with a Lifetime Warranty. We realize any manufacturer can put a product in a box and hope that it will work, however, at Corsair we Guarantee it will work for a lifetime! Ask The RAM Guy. If you need help installing your memory, don’t fret, at Corsair we understand that the first timers might need some help. So we’ve created a 24/7 online customer support site just for you at our website asktheramguy. Here, you can find other people like yourself that are In the know and can help answer questions you may have about installation or anything RAM related! So if you’re looking to increase the speed of your PC, Buy this Corsair TWIN2X4096-6400C5C!

Customer Questions & Answers

Customer Reviews

Installed easy and works as expected.
Eldon R. Repsher
Of the two sticks in this item, one of them had errors as tested with Memtest and Windows Memory Diagnostic.
someguy123
Peace of mind knowing you have the good stuff.
D. Mantle

Most Helpful Customer Reviews

21 of 23 people found the following review helpful By A. Dent #1 HALL OF FAMETOP 50 REVIEWERVINE VOICE on May 21, 2010
I got the Corsair when I upgraded my 4GB desktop to Vista 64-bit and not only it worked beautifully but it carried well into the 64-bit Windows 7 software upgrade. Installation was quick and uneventful and the computer recognized the new memory immediately. My computer appears to be performing significantly better post-upgrade. I've never had an issue with Corsair memory - I also used Corsair's DD3 to upgrade my laptop's RAM - and I'm likely to continue to consider their products in the future as they appear to be of good quality and performance.

Before ordering, you should make sure that this is EXACTLY what you need. This is DDR2 (two) memory. While DDR3 transfers at twice the data rate of DDR2, they are physically incompatible with DDR2 slots so you can't use the faster DDR3 memory on a DDR2 motherboard. You should also be aware that the amount of recognized available memory depends on the operating system and the way your computer is configured (BIOS) so you may not be able to use the all the memory in your system until you install a 64-bit OS and/or upgrade your BIOS.

My STRONG suggestion (I got burned myself once): don't make assumptions and hope for the best, verify that your specific machine supports this exact type of memory before you buy. Corsair has a site that can help you determine that and your computer manual should list its specs.

To me, it's an easy 5 stars.

Specs:

- Memory clock @ 200 MHz
- I/O bus clock @ 400 MHz
- Peak transfer rate: 6400 MB/s
- Cycle time: 5 ns
- Limited (what does it mean?) lifetime warranty but there is no warranty statement
- Made in Taiwan

________________________________

Note: at the time I bought mine, Corsair was offering a rebate but I can't remember if there was an expiration date.
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33 of 39 people found the following review helpful By jbat on October 10, 2009
Pros: Appears well made; tailors itself to other memory installed; Corsair website helps to find the right memory for your computer

Cons: Rebate; expensive as compared to 6 mos ago - knocks off one star.
Thoughts: Have an AMD 9750 quad with 4 GB memory in slots #1-2 and wanted to go to 8GB. It is important to install compatible memory in the other slots - i.e. slots #3-4 were empty.

I have 64 bit Vista which can "see" 8GB of memory.

I searched through multiple sites to obtain quality memory and was not happy with the confusing results. I searched the Corsair website and they have a "memory search", where you enter your computer model and they give you matched memory that is guaranteed to work with your computer. Then it was easy to find what I needed. The result was the all my memory ran well and I can use all my 8 GB memory.

I don't mean to confuse those who are less technically inclined - the point is that all memory is not the same and to just stick any DDR2 memory into your computer will guarantee an unhappy end user. It is hard to match up the correct DDR2 memory without knowing a lot of hidden details and for most end users it is easier to just go to the memory manufacturer's website to look up compatible memory.

Overall: Very satisfied.

Technical stuff: AMD 9750 quad with 4 GB memory @ 800 MHz 6-6-6-18 timing, 1.8v in slots #1-2. 64 bit Vista OS which runs all 32 bit software I have thrown at it and can run old 16 bit software and DOS games with DosBox! Only a 64 bit OS can use more than about 3 GB memory. This Corsair 2GB x 2, dual channel, paired memory, with timings of 5-5-5-18,1.8v is faster memory than my original installed memory and I was concerned about the timings.
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3 of 3 people found the following review helpful By Friday on January 5, 2011
Verified Purchase
I purchased 2 sets of these and they are working excellent, I'm running windows 7 (64bit) and my Windows experience index rating for ram is 7.2 (out of 7.9) and I just used it straight out of the box so I'm sure with a little tweaking these could do better than 7.2. If you have a ddr2 mother board and still have a decent processor buying these ram would surely add to the overall lifespan of your current pc build.
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2 of 2 people found the following review helpful By Amazon Customer on August 30, 2010
Verified Purchase
I bought this memory to add onto the 2GB of Corsair RAM already in my system (I'm using a 64-bit OS). Works great and is a decent value. I would certainly recommend this memory upgrade to anyone.
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2 of 2 people found the following review helpful By James P. Howard on July 25, 2010
Verified Purchase
Everything worked out of the box. also, package was delivered as stated when it was ordered. Nothing can be added.

Product recommended
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1 of 1 people found the following review helpful By GT Cobra on May 12, 2014
Verified Purchase
My old Core2Duo Quad machine has been serving me reliably for years, and I'm just not ready to put her to the grave just yet. I've already breathed a little more life into her with a Gigabyte Geforce GTX 660 OC and now decided to upgrade my machine from 4 GB RAM to 8 GB. The specs of these sticks were identical to the outgoing sticks I have in my machine, with the exception of twice the memory. Problem is the price was a little high, at $70 for 4 GB it cost me $140 to upgrade. I could have probably just upgraded to 6 GB but I figured I'd go all out before I make the jump to a new machine.

Getting the RAM I noticed the quality of the Corsair sticks. They have a heatsink like my old sticks, but the design changed a little, since my old sticks were also the XMS2 brand. The heatsink was a little less robust looking, but had some sharp silver stripes going across the top. They were also a little less bulky. They snapped into my motherboard quite nicely, although I didn't snap a stick down securly and it failed to get to POST. Oops. Quickly remedied and my computer booted up quickly. Despite doubling the amount of RAM my machine didn't seem any faster, but that was to be expected with the same 800MHz speed and latency timings of 5-5-5-18. A little overclock may help but I'm not looking to do that now. I did notice a slight boost in some games, especially some RAM heavy games such as some RTS games and Max Payne 3. 4 GB is barely the minimum on most games now and the extra RAM certainly is felt.

+Pros:
+Sturdy, solid build quality.
+Heatsink should improve longevity.
+Speed increased noticed in some games.
+Easy to install.

-Cons:
-Very pricy, especially compared to DDR3 RAM.
-No increase in speed during most regular computer operations.
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