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Standard Desktops use Non-ECC Non-Registered/Unbuffered RAM. SERVERS use ECC Registered RAM.  Lifetime Warranty on All Memory Modules. FREE standard shipping within USA on orders over $30 dollars.  
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HomeMemory > Shop by Type > DDR3 Memory > Long Dimm 240-Pin Memory > ECC Registered > PC3-12800 ECC REG HP > 8GB Single Rank x4 PC3-12800 DDR3-1600MHz ECC Registered CL11 Replacement Memory Module for Select HP Systems - HP Part Number 647899-S21
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8GB Single Rank x4 PC3-12800 DDR3-1600MHz ECC Registered CL11 Replacement Memory Module for Select HP Systems - HP Part Number 647899-S21

8GB Single Rank x4 PC3-12800 DDR3-1600MHz ECC Registered CL11 Replacement Memory Module for Select HP Systems - HP Part Number 647899-S21Enlarge Image
MPN: 647899-S21
Item No. 647899-s21
Weight: 0.2 lbs.
Condition: New
Availability: Usually ships the same business day
Brand: This RAM could be manufactured by Samsung, Hynix, Micron, Elpida, Qimonda or Nanya. Each Memory Module is manufactured to meet or exceed OEM specifications.   IF you ordered ECC REGISTERED RAM and you have a regular standard DESKTOP, then this ECC REGISTERED RAM is NOT compatible with your systems. PLEASE order NON-ECC NON-REGISTERED (UNBUFFERED) RAM.
Price : $75.00
  • Lifetime Warranty!
  • 30 Day Money-Back Guarantee!
Will this work on my computer/server?
Specifications:
Memory Size: 8GB
Memory Speed: 1600MHz DDR3 PC3-12800
Error Checking: ECC
Signal Processing: Registered
Warranty: Lifetime Warranty

This product is compatible with the following systems:

  • HP ProLiant WS460c Gen8
  • HP ProLiant BL420c Gen8
  • HP ProLiant BL460c Gen8
  • HP ProLiant BL660c Gen8
  • HP ProLiant DL160 Gen8
  • HP ProLiant DL360e Gen8
  • HP ProLiant DL360p Gen8
  • HP ProLiant DL380e Gen8
  • HP ProLiant DL380p Gen8
  • HP ProLiant DL560 Gen8
  • HP ProLiant ML350e Gen8
  • HP ProLiant ML350p Gen8
  • HP ProLiant SL230 Gen8
  • HP ProLiant SL250s Gen8

Memory offered now may differ in speed from the original system memory but has been qualified to work in the system.  When mixed, the memory will perform at the lowest speed populated or the highest speed allowed by the system. 
Please contact us: 888-861-0328 if you have any questions about system
compatibility.

Memory Return Policy

  • Return for refund within: 30 days
  • Return for replacement within: lifetime

For a return for credit, this item must be returned to Memory America within30 days of the invoice date for this policy to apply.  For a replacement, we offer a Lifetime warranty and support on all memoryupgrades.  “Return” constitutes receipt of the product by Memory America, and not the mere issuance of an RMA.

The following conditions are not acceptable for return, and will result in the merchandise you have returned to Memory America being returned to you:

  • Modules exhibiting physical damage
  • Modules that are missing the manufacturer label containing model number, part number or serial number
  • Modules that are missing the manufacturer warranty label

Will ecc memory work on a non ecc motherboard?

ECC Memory has an extra chip on the memory that performs Error Checking and Correcting functions. It's really only recommended for machines being used as servers.
For home systems, non-ECC memory is recommended unless you KNOW you need the ECC function. This is because ECC and non-ECC memory can almost always be mixed in the same system with no problems. If you mix these types of memory, the system will run as if all the memory was non-ECC.
Non-ECC memory is also recommended because it runs a little faster than ECC memory since it doesn't need to do the extra error checking. ECC memory is only really beneficial if you're going to be processing massive amounts of data (like a server does) and all data needs to be 100% accurate. Non-ECC is all that's needed for 99% of the computers out there.

What is registered memory?

A memory module that contains registers that hold the data for one clock cycle before it is moved on to the motherboard. This process increases the reliability of high-speed data access. Registered memory modules are typically used only in servers and other mission-critical systems where it is extremely important that the data is properly handled.


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