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08-19-2012

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s30 questions

2012-08-19, 21:57 PM

Hi, I'm considering getting an s30 - the primary things I will use it for are photoshop, video editing, and I want to create virtual machines to install sql server and MS BI tools for self training.

 

I've tried to spec out the machine I would buy online, and have a few questions.

 

Looking at processors, I think I would get the Intel Xeon Processor E5-1620 (10M Cache, 3.60 GHz, 0.0 GT/s Intel QPI).  I do notice however, the Intel Xeon Processor E5-2609 (10M Cache, 2.40 GHz, 6.40 GT/s Intel QPI) for the same price.  The 1620 looks faster - what's the difference between these processors.  The 2609 has "6.40 GT/s" but I don't know what that means??

 

The base memory is 2gb and memory upgrades look expensive.  I compared this to crucial.com where I'm able to buy memory significantly cheaper then through lenovo's website.  Is there a difference?

 

I've also looked at Dell and HP, but I have some quality concerns (I've got a dell now and have spent way too much time dealing with hardware problems).  The s30 is at a good price point for me and it looks like it will give me the performance/reliability I'm looking for.

 

Any thoughts or advice would be appreciated.

 

thanks,

-bruce

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99 Posts

11-24-2007

United States

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Re: s30 questions

2012-08-20, 2:02 AM

for your needs the E5-1620 is a far better choice.   it's made for 1P (single processor) systems like the S30.   E5-26xx series CPUs are primarily intended for 2P systems like the C30 and D30.   the QPI (quick path interconnect) frequency listed is speed of the bridge between processors in multi-processor systems, hence why the E5-16xx models have no QPI listed.

 

memory is a tough call.   if you want it warranted by lenovo with overnight replacement and guaranteed compatibility then buy it with the system.   if you want to save money and support it yourself then buy third-party memory from a reseller.   i have my opinions on this but i'm also an engineer and not a salesman.   but, i also used to be a DCC/ID in another life an completely relate to both sides of the argument. ;)

 

regarding quality, lenovo has the highest-rated reliability in the workstation segment.   we have lower service costs and defect rates than the competition.   i'd say you're making the right choice.

 

let us know if you have any other questions.

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35 Posts

06-10-2012

Netherlands

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Re: s30 questions

2012-08-20, 11:11 AM

I had that same dillemma with regard to RAM when i bought my D30 and i decided to replace the existing 4x2GB UDIMMS by 8GB RDIMMS from Crucial.

 

My reason were:

 

1. System accepts up to 16GB RDIMM and up to 8GB UDIMM.

2. Cannot mix UDIMM with RDIMM

3. System comes with 4x2GB UDIMM (Samsung)

4. Upgrades relatively expensive

 

Double capacity if you use RDIMM. Might come in handy if you do virtualization and other RAM intensive things. Consider though that Windows 7 Professional only accepts up to 192GB of RAM ( I use GNU/Linux)

 

I understand that you can mix 8GB with 16GB RDIMM.and so that gives me the flexibility to fill up the other empty slots with 16GB RDIMM if that is needed in the future.

 

I might be wrong though about some of the assumptions i made above.

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8 Posts

08-19-2012

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Re: s30 questions

2012-08-20, 22:13 PM

Thank you both for your responses.  I'm delving a little deeper into the memory question.  I see many different options and it's a little hard to know what is best.

 

If I restrict to only look at 1600mhz, that brings my options down to three (most expensive on top, least expensive on bottom)

 - DDR3 PC3-12800,  CL=11,  Unbuffered,  ECC,  DDR3-1600,  1.5V,  1024Meg x 72

 - DDR3 PC3-12800,  CL=11,  Dual Ranked, x4 based,  Registered, ECC,  DDR3-1600,  1.35V,  1024Meg x 72

 - DDR3 PC3-12800,  CL=9,  Dual Ranked, Registered,  ECC,  DDR3-1600,  1.5V,  1024Meg x 72

 

From what I've read, Registered sounds more important if it's for a server, unbuffered is more typical for a desktop.  People seem unconcered about the differences between CL=9 and CL=11.

 

I'm leaning towards the first one (the unbuffered memory).  It comes in a kit of 3 x 8gb sticks.  I think I read in one of the postings here that the memory is more efficient if installed in pairs (or did I not remember this correctly?)  I could buy a fourth 8gb stick and then have the remaining 4 slots available for future growth (heck- I'll already have far more memory then I've ever had before... hopefully the vm will be less sluggish :smileyhappy:)

 

thanks again,

-bruce

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99 Posts

11-24-2007

United States

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Re: s30 questions

2012-08-21, 0:46 AM

UDIMMs are perfectly fine for most people.   RDIMMs are preferred for analysis applications where the extra layer of error checking matters or in systems needing tons of memory.

 

regarding memory channels, kits sold in triplets will work fine in your system but were intended for the previous generation of systems since they were triple channel.   the current architecture is quad channel and will perform best with memory in pairs or quads.

 

clock address latency is rarely a concern unless performing memory-intensive mathematics.   you don't fall into that category.

 

in short, buy the amount of memory you need in pairs or quads and don't stress over the rest.   just don't mix RDIMMs and UDIMMs as that won't work.

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8 Posts

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Re: s30 questions

2012-08-21, 1:00 AM

Okay... I'm going out on a limb here... udimm = unbuffered and rdimm = registered?

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99 Posts

11-24-2007

United States

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Re: s30 questions

2012-08-21, 1:29 AM

correct.   'register' is another term for 'buffer' so you could also look at it as registered and unregistered.   all RDIMMs are ECC but not all UDIMMs are ECC.   you'll need ECC UDIMMs if you go that route.

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