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Suggestions for computer with an i7 CPU and RAID0 with SSD?


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#1 Nuno Brito

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Posted 12 November 2015 - 09:04 PM

Hello!

 

I'm building a new computer that needs huge reading speeds. What will be read are large files on disk, 300Gb in disk space.

 

The bottleneck is how fast we can read from disk, so having an SSD array under RAID0 seems to double the speed of an already fast SSD.

 

I was looking for a box equipped with an i7 that is compact and supports SSD arrays. Any ideas/suggestions?

 

Around the web are some addons like this one:

http://www.ebay.de/i...ZQAAOSw4UtWRNwd

 

Was trying to find a good balance between:

- price (~300 to ~800 EUR) for computer without SSD

- size, small enough to be carried around to other places

- fast, under this budget what could be faster for generic processing?

 

Thanks!

:cheers:

 

 

 

 

 

 

 

 



#2 erwan.l

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Posted 14 November 2015 - 04:36 PM

Hi Nuno,

 

If you are doing sequential reads, raid0 is indeed probably twice faster.

If you are doing random reads, you may want to double check that to be sure you actually get a significant improvement.

 

Regards,

Erwan


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#3 Nuno Brito

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Posted 14 November 2015 - 06:54 PM

You're right. Was looking on already available machines and found as one of the fastest machines available on this moment to be a newer Macbook Pro that reads data at 1300MBps: http://www.computerw...ce-as-fast.html

 

Problem is price but they seem to be doing internally a RAID0 to achieve such performance (look on the comments)

 

 

In the meanwhile got a Samsung 850 EVO SSD sized in 500Gb, they are nice because a USB 3.0 adapter is included.

 

This doubled the read speed compared to using HDD on 100MBps to 200MBps on SSD+USB3.0 but can be improved if one replaces the HDD on the laptop with the SSD as next step. They mention 400MBps as max speed, my laptop has two drives (1x HDD and 1x SSD) that can be paired as RAID0, so theoretically can achieve some 800MPs on hardware already around, albeit not as impressive as 1300MBps for these macs.



#4 cdob

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Posted 14 November 2015 - 07:24 PM

The bottleneck is how fast we can read from disk

Intel SSD 750 Series, PCIe 3.0 x4, 2200 MB/s read
 

- size, small enough to be carried around to other places

Samsung SSD XP941 512GB, PCIe M.2 Typ 2280 (NGFF), 1100 MB/s read
http://store.hp.com/...-mini-f3u77av-1

M.2 PCIe

http://www.mydigital...ty-list-p3.html
HP Prodesk 600 G1 Mini : M.2 PCIe 80mm


Added:
Samsung SSD 950 Pro 512GB, M.2 (PCIe 3.0 x4), read 2500MB/s
Should fit in a HP Prodesk 600 G2 Mini

Edited by cdob, 14 November 2015 - 07:48 PM.

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#5 Nuno Brito

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Posted 14 November 2015 - 08:29 PM

Intel SSD 750 Series, PCIe 3.0 x4, 2200 MB/s read

:blink: Now that's fast.

 

The Prodesk is nice and has upgrade to an i7 CPU but then the price jumps to ~1200 USD and the CPU model is not very strong in terms of performance. Would you happen to know a motherboard (on a budget) that permits running the 4.0Ghz i7 CPU at maximum speed of the Intel SSD?

 

For that matter, any motherboards exist out there that can take two i7 CPU to increase the number of dedicated process/threads? :lol:



#6 cdob

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Posted 15 November 2015 - 10:17 AM

a motherboard (on a budget) that permits running the 4.0Ghz i7 CPU at maximum speed of the Intel SSD?

http://www.asrock.co...ro4SD3/?cat=CPU
http://www.asrock.co...=Specifications

1151 Core i7 i7-6700K(R0) Skylake S 4.0GHz

2 x PCI Express 3.0 x16 Slots (PCIE1: x16 mode; PCIE3: x4 mode)*
*Supports NVMe SSD as boot disks


For that matter, any motherboards exist out there that can take two i7 CPU

Intel dosn't support dual Core I configuration. There may exist one anyway, not

#7 erwan.l

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Posted 15 November 2015 - 12:53 PM

If you are up to dual socket mobos, you'll have to go for xeon processors.

You will significantly increase your budget then as the mobo only will be around 500€ and the xeon wont be for free as well.

Not to mention you'll probably have to go for ECC memory (much more expansive).

 

This is usually the hardware you find in profesionals server rooms : performining, resilient, running 24/24 for years.

 

If your work is important and if you intend to run 24/24, you may want to ensure your setup is fit for purpose.

 

/Erwan


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#8 Nuno Brito

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Posted 15 November 2015 - 11:23 PM

Sounds very interesting.

 

Will read into the links. Right now I'm using an adhoc RAID0 built with SSD. Not the ideal but already a boost within budget.

 

Thank you very for the recommendations! :cheers:



#9 sbaeder

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Posted 19 November 2015 - 10:48 PM

I agree with the above...These new PCIe interfaces are WICKED FAST, but a bit more expensive.  Not sure that improving the processor will matter that much, since it is really the bandwidth of the PCIe that will matter.  My analogy is to gaming, where a modes CPU is still more than enough to do 4K / multiple monitor gaming, where it is the IO on the graphics cards to their own memory that matters.

 

Even with SSDs, the internally use more "banks" (i.e. siimilar to a form of internal raid 0) to improve things, which is why the larger drives are often "faster", and they can get these speeds on the PCIe bus, since they already saturate the sata well below what they are really capable of.


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#10 RoyM

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Posted 20 November 2015 - 05:12 AM

Nice info on the PCIe hardware being WICKED FAST.
I am not lucky enough to have had experience with this type of hardware yet.
 
I would suggest a Motherboard with built in RAID support.
I go with 0 for gaming, 10 for Important Stuff.
The reason I suggest this is that OS's seem to work better
with RAID support at the Motherboard level.
They ALL still load their own bios extensions for external and/or internal hardware.
But in my experience, if it is onboard hardware, it's gonna work transparently to the system/OS.
 
Since no-one has mentioned.
What about the possibility of throwin' Terabytes of Ram at the motherboard.
On startup, load to memory, then work from there.
when all is done, save changes back.
 
If I don't get a chance to respond back by next week.
"Have a great Thanksgiving Day everyone".
 
Regards
RoyM

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