ECC (and parity) memory modules have a chip count divisible by three or five. … Non-ECC (also called non-parity) modules do not have this error-detecting feature. Any chip count not divisible by three or five indicates a non-parity memory module. Using
ECC decreases your computer's performance by about 2 percent
.
What is ECC memory good for?
Error-correcting code memory (ECC memory) is a type of computer data storage that
can detect and correct the most common kinds of internal data corruption
. ECC memory is used in most computers where data corruption cannot be tolerated under any circumstances, such as for scientific or financial computing.
Is ECC memory really necessary?
You need high-end, battery-backed fully hardware RAID with onboard RAM to ensure that you don't lose data due to a power outage, disk failure, or whatever. So no,
you don't really need ECC RAM
in your workstation. The benefit simply will not justify the price.
How can you tell the difference between ECC and non-ECC RAM?
If you are unsure whether you have ECC or non-parity, count the number of small, black, IC chips mounted on one of your existing sticks of memory.
If the number of chips on one side is even, as in 4 or 8, you have non-ECC
. If the number of chips on one side is NOT even, as in 9, you have ECC.
Can I mix ECC and non-ECC RAM?
No, do not mix ECC with non-ECC ever
, not in a server, in a desktop or even, for that matter, in the same storage location for unused sticks.
Why is ECC memory so expensive?
Another obvious difference between ECC RAM and non-ECC RAM is the price. Due to its advanced features, ECC memory
is more expensive than normal RAM
, and is only supported on specialised (and costly) motherboards and high-end server CPUs like Intel's Xeon range.
How do I choose ECC memory?
You can determine if your system has ECC by
simply counting the number of black memory chips on each module
. ECC (and parity) memory modules have a chip count divisible by three or five. This extra chip detects if the data was correctly read or written by the memory module.
Is ECC memory expensive?
ECC memory is generally 10-20% more expensive than non-ECC memory
. Most surprising however, is that ECC memory will slow your system performance down by an estimated 2-3 percent!
Who uses ECC memory?
Almost all server-class computers
use ECC memory, but very few substation computers use ECC memory. Substation computers with 2 GB RAM (random-access memory) can expect to experience one bit flip every other week because of cosmic ray influence on the RAM. These bit flips can cause the computer to crash.
Does Google use ECC RAM?
Jeff Atwood, perhaps the most widely read programming blogger, has a post that makes a case against using ECC memory. …
Google didn't use ECC when they built their servers in
1999. Most RAM errors are hard errors and not soft errors.
What is the full form of ECC?
ECC stands for
Excise Control Code
. It is a PAN based 15 digit alpha numeric registration numbers given to all who is liable to pay excise duty under Central Excise Act.
Is ECC RAM good for gaming?
For most gamers and general home office users,
ECC RAM will not be worth the additional expense
. The occasional memory failure is a nuisance, but won't really cost you anything. … As we mentioned in our i7 vs Xeon post, ECC RAM is only available in workstations powered by Intel Xeon processors.
Does DDR4 have ECC?
The
DDR4 RAM itself does not vary at all
, the memory modules in many cases can be the same in an ECC and a NO-ECC, what changes is if they integrate an extra chip, which is responsible for detecting the errors in one bit of a data string and correct it and in the case of two of these bits, it simply reports the failure …
Is ECC memory slower?
ECC RAM is
slightly slower than non-ECC RAM
. Many memory manufacturers say that ECC RAM will be roughly 2% slower than standard RAM due to the additional time it takes for the system to check for any memory errors.
Where is ECC RAM commonly found?
Error correction code (ECC) memory is a type of RAM memory found
in workstations and servers
. It's valued by professionals and businesses with critical data for its ability to automatically detect and correct memory errors, thus fighting data corruption.
Is ECC RAM better?
At the cost of a little money and performance,
ECC RAM is many times more reliable than non-ECC RAM
. And when high-value data is involved, that increase in reliability is almost always going to be worth the small monetary and performance costs. In fact, anytime it is possible to do so, we would recommend using ECC RAM.
