I have been looking into buying a new computer and am really trying to learn as much as I can about computers before i go out and completly upgrade my current computer (k62-350). I was looking at prices for amd xp 1600+ cpu's at pricewatch.com and I saw quite a bit of difference in price between OEM cpu's and cpu's that weren't OEM (i guess is what they are if nothing is listed about OEM). So my question is bascially what is OEM? Is the only difference between OEM and something that is not OEM the warranty on the product, or is an OEM product a refurbished item? My last question is what does RAID mean, since i don't know i doubt that means i'll be doing that to my computer I'm about to buy but just would like to know. Thank you in advance for the help.
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First Time Poster Newbie Question
- Thread starter Pikkon
- Start date
OEM means "Original Equipment Manufacturer", basically you get the CPU in a little box with nothing but the CPU in it, no HSF, no paste, etc.
Supposedly warranty is different too, but thats a US thing so I dont know much about that.
The other "version" is retail which comes in a much nicer box, along with a HSF.
RAID means "Redundant Array of "Inexpensive/Independant Disks", I believe Inexpensive was the original term, while it seems Independant is used these days, independant makes more sense anyways.
Basically you use several disks as one, either in a mirror for redundancy(RAID1), where if one disk fails, the logical disk will still be intact.
There's also RAID0, where you use two disks as one bigger disk, you gain some performance by using this setup, but if one disk fails, all the data is gone.
And then there's RAID5 which requires 3 disks or more, and where you lose some space, but at least one disk can fail and still leave the arrayn intact.
Thats a short explaination, search google if you want more.
Supposedly warranty is different too, but thats a US thing so I dont know much about that.
The other "version" is retail which comes in a much nicer box, along with a HSF.
RAID means "Redundant Array of "Inexpensive/Independant Disks", I believe Inexpensive was the original term, while it seems Independant is used these days, independant makes more sense anyways.
Basically you use several disks as one, either in a mirror for redundancy(RAID1), where if one disk fails, the logical disk will still be intact.
There's also RAID0, where you use two disks as one bigger disk, you gain some performance by using this setup, but if one disk fails, all the data is gone.
And then there's RAID5 which requires 3 disks or more, and where you lose some space, but at least one disk can fail and still leave the arrayn intact.
Thats a short explaination, search google if you want more.
gregor7777
Platinum Member
Welcome to AT Pikkon. My advice to you would be to make sure and not skimp out on a nice case and power supply. These are essential and I PROMISE you you'll be angry with a cheap case. Cut fingers, thin metal, and cramped conditions result with cheapo cases.
A nice power supply will be your best friend through many upgrades if you go good the first time.
Good luck.
A nice power supply will be your best friend through many upgrades if you go good the first time.
Good luck.
Most OEM processors come with a warranty from the place you buy it from so really the major difference between retail and OEM is the heatsink, thermal paste and the pretty little box, and of course the length of the warranty may or may not be different depending on where you buy it from.
As far as raid goes, since your new it really does not strike me as something you need to be doing until you learn a bit more about working on computers. I'm not saying not to try it just to learn more about how computers work before you do.
BTW, good luck.
As far as raid goes, since your new it really does not strike me as something you need to be doing until you learn a bit more about working on computers. I'm not saying not to try it just to learn more about how computers work before you do.
BTW, good luck.
RAID Level 0
RAID Level 0 is not redundant, hence does not truly fit the "RAID" acronym. In Level 0, data is split across drives, resulting in higher data throughput. Since no redundant information is stored, performance is very good, but the failure of any disk in the array results in all data loss. This level is commonly referred to as striping.
RAID Level 1
RAID Level 1 is commonly referred to as mirroring with 2 hard drives. It provides redundancy by duplicating all data from one drive on another drive. The performance of a Level 1 array is slightly better than a single drive, but if either drive fails, no data is lost. This is a good entry-level redundant system, since only two drives are required. However, since one drive is used to store a duplicate of the data, the cost per megabyte is high.
RAID Level 2
RAID Level 2, which uses Hamming error correction codes, is intended for use with drives which do not have built-in error detection. All SCSI drives support built-in error detection, so this level is of little use when using SCSI drives.
RAID Level 3
RAID Level 3 stripes data at a byte level across several drives, with parity stored on one drive. It is otherwise similar to level 4. Byte-level striping requires hardware support for efficient use.
RAID Level 4
RAID Level 4 stripes data at a block level across several drives, with parity stored on one drive. The parity information allows recovery from the failure of any single drive. The performance of a level 4 array is very good for reads (the same as level 0). Writes, however, require that parity data be updated each time. This slows small random writes, in particular, though large writes or sequential writes are fairly fast. Because only one drive in the array stores redundant data, the cost per megabyte of a level 4 array can be fairly low.
RAID Level 5
This level is commonly referred to as striping with distributed parity. RAID Level 5 is similar to level 4, but distributes parity among the drives. No single disk is devoted to parity. This can speed small writes in multiprocessing systems. Because parity data must be distributed on each drive during reads, the performance for reads tends to be considerably lower than a level 4 array. The cost per megabyte is the same as for level 4.
RAID 0/1 or 10
RAID 0/1 is a dual level array that utilizes multiple RAID1 (mirrored) sets into a single array. Data is striped across all mirrored sets. As a comparison to RAID 5 where lower cost and fault tolerance is important, RAID 0/1 utilizes several drives, in order to provide better performance. Each drive in the array is duplicated (mirrored). This eliminates the overhead and delay of parity. This level array offers high data transfer advantages of striped arrays and increased data accessibility (reads). System performance during a drive rebuild is also better than that of parity based arrays, since data does not need to be regenerated from parity information, but copied from the other mirrored drive.
RAID 0/5 or 50
RAID 0/5 is a dual level array that utilizes multiple RAID5 sets into a single array. In RAID 0/5 array, a single hard drive failure can occur in each of the RAID5 without any loss of data on the entire array. Keep in mind, as the number of hard drives increase in an array, so too, does the increased possibility of a single hard drive failure. Although there is an increased write performance in RAID 0/5, once a hard drive fails and reconstruction takes place, there is a noticeable decrease in performance, data/program access will be slower, and transfer speeds on the array will be effected.
Courtesy of Adaptec, Inc
RAID Level 0 is not redundant, hence does not truly fit the "RAID" acronym. In Level 0, data is split across drives, resulting in higher data throughput. Since no redundant information is stored, performance is very good, but the failure of any disk in the array results in all data loss. This level is commonly referred to as striping.
RAID Level 1
RAID Level 1 is commonly referred to as mirroring with 2 hard drives. It provides redundancy by duplicating all data from one drive on another drive. The performance of a Level 1 array is slightly better than a single drive, but if either drive fails, no data is lost. This is a good entry-level redundant system, since only two drives are required. However, since one drive is used to store a duplicate of the data, the cost per megabyte is high.
RAID Level 2
RAID Level 2, which uses Hamming error correction codes, is intended for use with drives which do not have built-in error detection. All SCSI drives support built-in error detection, so this level is of little use when using SCSI drives.
RAID Level 3
RAID Level 3 stripes data at a byte level across several drives, with parity stored on one drive. It is otherwise similar to level 4. Byte-level striping requires hardware support for efficient use.
RAID Level 4
RAID Level 4 stripes data at a block level across several drives, with parity stored on one drive. The parity information allows recovery from the failure of any single drive. The performance of a level 4 array is very good for reads (the same as level 0). Writes, however, require that parity data be updated each time. This slows small random writes, in particular, though large writes or sequential writes are fairly fast. Because only one drive in the array stores redundant data, the cost per megabyte of a level 4 array can be fairly low.
RAID Level 5
This level is commonly referred to as striping with distributed parity. RAID Level 5 is similar to level 4, but distributes parity among the drives. No single disk is devoted to parity. This can speed small writes in multiprocessing systems. Because parity data must be distributed on each drive during reads, the performance for reads tends to be considerably lower than a level 4 array. The cost per megabyte is the same as for level 4.
RAID 0/1 or 10
RAID 0/1 is a dual level array that utilizes multiple RAID1 (mirrored) sets into a single array. Data is striped across all mirrored sets. As a comparison to RAID 5 where lower cost and fault tolerance is important, RAID 0/1 utilizes several drives, in order to provide better performance. Each drive in the array is duplicated (mirrored). This eliminates the overhead and delay of parity. This level array offers high data transfer advantages of striped arrays and increased data accessibility (reads). System performance during a drive rebuild is also better than that of parity based arrays, since data does not need to be regenerated from parity information, but copied from the other mirrored drive.
RAID 0/5 or 50
RAID 0/5 is a dual level array that utilizes multiple RAID5 sets into a single array. In RAID 0/5 array, a single hard drive failure can occur in each of the RAID5 without any loss of data on the entire array. Keep in mind, as the number of hard drives increase in an array, so too, does the increased possibility of a single hard drive failure. Although there is an increased write performance in RAID 0/5, once a hard drive fails and reconstruction takes place, there is a noticeable decrease in performance, data/program access will be slower, and transfer speeds on the array will be effected.
Courtesy of Adaptec, Inc
cleverhandle
Diamond Member
Having just built a RAID system (striped) for the first time this weekend, I'll say it really isn't anything to be too afraid of. Took all of about 10 minutes to figure out how to configure it in the BIOS and get Windows to recognize it during installation. Worst problem I had was that my RAID controller doesn't like sharing its IRQ, so I had to move my sound card down a couple slots. Certainly, do some reading about the advantages/disadvantages before you shell out extra cash - but if it fits your needs, go ahead and try it.
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