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Couple performance questions before i buy...

Post Date: 2007-10-18

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hawkeyye View Drop Down
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  Quote hawkeyye Quote  Post ReplyReply bullet Topic: Couple performance questions before i buy...
    Posted: 18 Oct 2007 at 12:58am
Two issues im still trying to work out. 
 
1st- memory.  How much difference is there between the 800 mhz ram (looking to get 2 gig corsair) and the 1066 mhz ram?  Is it worth the extra 120.00? 
 
2nd - hard drives.  single?  or double in a raid zero?  About 100.00 to 150.00 for the second drive. 
 
Not made of money, id like to hear that i wouldnt notice either, and save my dough.  And if you had to pick one, which would give more improvement?
 
thanks
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commast View Drop Down
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  Quote commast Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 3:17am
  (1) Most people will be happy with the 800 Mhz RAM especially is game is your concern. The 1066 Mhz RAM won't increase your frame rates since frame rates depends on how fast your video card is, but it will give your system a better overall performance. Whether or not it's worth it or not, you decide.

   (2) Raid 0 is faster than any single hard drive, even a Raptor.





Edited by commast - 18 Oct 2007 at 3:22am
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thecomplex View Drop Down
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  Quote thecomplex Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 8:51am
True that the GPU is arguably the most important contributor to frame rates, but won't frame rates be somewhat affected by everything? GPU, CPU, RAM, etc?

Chris
Intel Core 2 Duo E6850 @ 3.52GHz
4GB DDR2 Corsair 1066MHz Dominator
(2) 150GB WD Raptor (10K RPM)
(1) 120GB Maxtor (7200RPM)
nVidia GeForce 8800GTX 768MB
Vista Home Premium 64
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Bill the Cat View Drop Down
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  Quote Bill the Cat Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 9:00am
Commast is, of course, correct. I don't believe that even 800 MHz memory is really necessary unless your machine's FSB is overclocked. I'd still recommend it though just to keep your options open.
 
RAID0 setups are faster than a single drive, but apparently only about 25% - 33% faster because of less than perfect RAID controller implementations. If you're on a budget, a single Raptor should make you happy, but I would recommend a second bigger Caviar type drive for music, pictures and video. Save the Raptor for the OS and applications.
 
Thecomplex, there always has to be just a single bottleneck in the system at any given time. One weakest link in the chain as it were.


Edited by Bill the Cat - 18 Oct 2007 at 9:02am
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  Quote tallpaul Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 10:57am
Hawkeye I agree with Bill for your purposes. Even if a single Raptor costs almost as much as a large raid 0 array, with raid 0 you are increasing your chance of hard drive failure. Single Raptors are very reliable, by most accounts. You could always add a couple of sata drives in raid 0 for cheap later on, if you needed more space and/or speed.
And you only need the super fast RAM if you plan on overclocking heavily later on, or want to at least allow for it.


Edited by tallpaul - 18 Oct 2007 at 10:58am
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  Quote Tyler Lowe Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 11:35am
Second 7200 Drive in RAID 0 will be cheaper, provide similar performance, and give you more storage. Read/write performance will actually be better than a single WD Raptor. 2*160GB 7200RPM drives is 320GB of storage. Unless you plan on storing alot of HUGE media files, that'll probably do nicely. IMO, go RAID, and 800 Mhz RAM. If I had only a little bit more in my budget, 7200RPM's in RAID 0 would be the next thing added over anything else.
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commast View Drop Down
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  Quote commast Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 4:31pm
With the Raid 0, the chance of HDD failure is the same with any other hard drive -- no more no less. The only difference is that if one hard drive fails you are going loose your data since all the datas is stored on all hard drives on the array. Just put in a new drive, format and re-install. I've never had a hard drive failed on me (since the 90's) yet so it's not an issue for me and i usually do a fresh clean install every year anyway. A single Raptor drive, with less capacity, cost more than a Raid 0 not to mention than the Raid 0 is faster Smile


Edited by commast - 18 Oct 2007 at 6:50pm
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Bigdog View Drop Down
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  Quote Bigdog Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 5:35pm
yea but isn't 2 raptor drives in a raid 0 faster then 2 7200rpm drives? 

Edited by Bigdog - 18 Oct 2007 at 5:35pm
Processor: QX6850 (3.3Ghz)
RAM: 4GB 1066 Dominators
Graphics: 2x 8800GTX 768MB
Sound Card: Fatal1ty
HDD 1: 2x 150GB raptor (RAID 0)
HDD 2: 1x 150GB raptor
HDD 3: 320GB western
Liquid cooling (red)
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  Quote nomec Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 5:42pm
yes... but two 7200rpm drives in RAID 0 is faster than a single raptor
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  Quote Bill the Cat Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 8:08pm
Originally posted by commast

With the Raid 0, the chance of HDD failure is the same with any other hard drive -- no more no less. The only difference is that if one hard drive fails you are going loose your data since all the datas is stored on all hard drives on the array. Just put in a new drive, format and re-install. I've never had a hard drive failed on me (since the 90's) yet so it's not an issue for me and i usually do a fresh clean install every year anyway. A single Raptor drive, with less capacity, cost more than a Raid 0 not to mention than the Raid 0 is faster Smile
 
Commast, old buddy, I've got to take exception to a couple of you points. It's true that the chance of a particular drive failure in a RAID array is the same as that single drive by itself, but the chance of a system failure is two or more times greater, depending on how many drives are involved. I think you're saying the same thing; it's a question of emphasis. You are roughly twice as likely to lose everything on a pair of 75 Gig Raptors in a RAID0 as you are with one 150 Raptor running alone.
 
My first Raptor croaked after running just 380 hours. "Stuff" does happen. I've lost quite a few drives over the last 30 years; usually to software disasters rather than hardware failures, but the result is the same.
 
I'm no expert, but the big deal about Raptors compared to other bargin drives is not their throughput. Raptors do deliver slightly higher sustained data rates, but their claim to fame is quicker random access. I'm guessing RAID0s don't have better access times than Raptors but may well have better sustained data rates. The question is which is more important. That almost certainly depends on what you're doing, but refer to the review below that tested a range of applications.
 
 
Then go to the Device Manager and find the SATA controllers that are connected you your drives. There's a built in performance test.
 
According to XP, the 500 Gig Western Digital Drive has a sustained  throughput of 81.5 Megabytes/sec. The Raptor has a sustained throughput of only 86.5 Megabytes/sec. Yet, according to the above review, the Raptor is hot stuff.


Edited by Bill the Cat - 18 Oct 2007 at 9:04pm
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commast View Drop Down
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  Quote commast Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 9:23pm

  Good points there, Bill Big%20smile There are always some risks involve when you try to max out your PC performance whether overclocking your cpu, video card, ram or use a raid 0 array. The Raptor is fast but the price to performance ratio is not worth it, IMHO. A few ms difference in access time doesn't really translate in real world performance Wink  A Raid 0 array on the other hand will have better all around performance. There are quite a few reviews on the net about the Raptor vs Raid 0. Below is just a few of the articles and i also posted the benchmark from Maximum PC in one of my posts too :

 
 
  Hardware can fails but that's why we have backup Wink
 
  Everybody has different uses for their PC -there's really no right or wrong configuration but if you want performance then Raid 0 is the way to go. That's my opinion anyway Big%20smile
 
 
 


Edited by commast - 18 Oct 2007 at 9:47pm
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Bill the Cat View Drop Down
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  Quote Bill the Cat Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 9:46pm
I admit I don't know nothin about any of this for sure. I've had a lot of second thoughts about getting a Raptor. I'm pretty sure whether a Raptor is worth it or not depends on what you're doing. After looking at the Tom's article, I have to conceed that you're more right than I am. Still, personally, I woundn't put my OS on a RAID.
 
Edit:
 
Of more interest for us here, Tom's points out that the 680i chip set doesn't implement RAID0 very well; at least I think that's what they said.


Edited by Bill the Cat - 18 Oct 2007 at 10:08pm
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commast View Drop Down
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  Quote commast Quote  Post ReplyReply bullet Posted: 18 Oct 2007 at 9:55pm
Originally posted by Bill the Cat

Still, personally, I woundn't put my OS on a RAID.
 
Yes, i understand. It's a bit of a gamble to put the OS on the Raid 0. Most the time you won't see the performance gain from either a Raptor, Raid 0 vs a normal 7200rpm HDD anyway Tongue I chose the raid 0 for my pc because i tends to work with large files and i want the speed but don't want to spend too much LOL
 
 


Edited by commast - 18 Oct 2007 at 9:57pm
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  Quote tallpaul Quote  Post ReplyReply bullet Posted: 19 Oct 2007 at 2:20pm
Well, two 150gb Raptors in RAID 0 will be the best performance. That's what I've got coming, but this guy's original question made cost an issue, and also note he did not mention needing a lot of space, so that's why I still say single Raptor - for him.
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