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Corsair 512MB (1x512MB) DDR1 400 MHz (PC 3200) Desktop Memory

3.8 out of 5 stars 16 customer reviews

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  • Corsair Memory is optimized for the Microsoft® Windows® Vista client operating system
  • Lifetime Warranty!
  • 512MB PC3200 400Mhz 184-pin Timing: 2.5-3-3-8
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Technical Details

  • Model Number: VS512MB400
  • Item Package Quantity: 1
  • RAM Memory Technology: DDR1
  • Form Factor: Desktop
  • Memory Storage Capacity: 0.5 GB
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Product Description


Customer Service / Tech support: 1-888-222-4346 opt. 1

Product Information

Product Dimensions 5.5 x 1.6 x 0.4 inches
Item Weight 0.3 ounces
Shipping Weight 0.3 ounces (View shipping rates and policies)
ASIN B000234UQA
Item model number VS512MB400
Customer Reviews
3.8 out of 5 stars 16 customer reviews

3.8 out of 5 stars
Best Sellers Rank #6,499 in Electronics > Computers & Accessories > Computer Components > Memory
Date first available at Amazon.com February 2, 2005

Technical Specification

Warranty [pdf ]

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Customer Reviews

Top Customer Reviews

By Brad on September 12, 2011
Verified Purchase
This is memory, it works like it should and was priced good. Would have like more memory but I wasn't sure if the PC I was putting it in was bad or not. I bought the PC from a Government Auction and it was sold for parts because it didn't work, upon exam I noticed the memory was bad so I bought this and it works fine. I plan on buying better, larger and more expensive RAM but I also plan on keeping this for testing PC's that I get with RAM problems or unknown problems.
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Verified Purchase
Listed Timing: 2.5-3-3-8

Shipped Timing: 3.0-3-3-8

The product shipped actually has CAS3, not CAS2.5 at 200Mhz, its "native" mode (it does support CAS2.5 at 166Mhz in a "fallback" mode). RAM timing is crucial for overall system performance and stability, especially when adding RAM to a system: the system will use lower RAM bus/access speeds in order to achieve stability.

This is the second RAM product I ordered from Amazon in a week's time where the shipped product timing did not match the listed product timing, and is in fact higher/slower. Whether this is the fault of Corsair improperly informing Amazon, or Amazon not qualifying/verifying their RAM remains to be seen, and ultimately it is Amazon's responsibility to address, considering implications of false advertising/deceptive practices.
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As already mentioned by another reviewer, this RAM is NOT CAS 2.5, but CAS 3 (3-3-3-8 according to SPD). Running on my electronics lab computer, an Opteron 185 w/2GB Geil RAM and a Sapphire Radeon 3850 AGP, the RAM worked fine for less than 24 hours before it started causing lockups, requiring a hard reset. Since the RAM that was already in there has relaxed timings compared to this RAM (3-4-4-8), the only excuse for this failure is poor quality control at Corsair.

After the failures, I ran these through a series of Memtest86+ runs, and both failed at their rated timings in less than 20 minutes.

I've purchased Corsair RAM 3 times now. The first RAM is still going strong, but the last two sets were both defective. Corsair will never again see a dollar from me.
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Verified Purchase
Corsair Memory VS512MB400 512MB PC3200 400MHz 184-pin DDR Desktop Memory has been installed and is working properly. The memory arrived as promised from Amazon and installed with no problems. The computer operates more efficiently with the increase in memory size.
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All I have to say about Corsair memory products is they never let you down. I've bought Corsair memory for years and have never received a bad stick of memory nor have I ever had a stick go out on me. To me thats all the proof I need.
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Verified Purchase
I purchased four 512MB Corsair Memory strips to speed up my P.C. Everything went smooth and they perform as expected. The installation was simple and my P.C. now works faster than ever. Thanks to Amazon for the simple yet effecient shopping expeience. Bob
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Verified Purchase
Added two 512MB sticks to a Gateway desktop PC. Plugged it in, the new memory was recognized, no problems. Performance improved significantly going from 512MB to 1.5GB, as expected.
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By Jas on January 21, 2012
Verified Purchase
My PC currently has three Corsair memory sticks installed, and none have failed on me. Very good product! Your PC will thank you with improved performance :-)
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