WOW That is a big chunk of change.

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Pluto will always be a planet to me.

Seti Ambassador
Not to late to order an Anni Shirt

Why not just a rig or 2 similar to mine?

It would be way cheaper to purchase and run.

Cheers.

I looked around and the Corsair AX and TX series (AFAIK, at least 750W+) have 2x EPS (8pin) connectors.
And EPS v2.92 (the latest/newest) standard.
So they should work, or not?

Does this PSU have at least 3A on 5VSB? If yes, and if Intel says min. 750W SSI EPS 5V compliant PSU, than it should work since 750W PSU of this type should have 3.0A on 5VSB, see the PDF posted above.

Of course considering that this thing is not going to be in standby much it might even work with less. We don't know what safety margins Intel is using, but I strongly doubt they'd recommend a PSU with 3A if the board indeed would constantly draw that much. But that's of course a bit risky, so better try to find a PSU, that actually has 3A on 5VSB and also meets all other requrements of the specification.

The 4-pin connector was introduced with Pentium 4 (hence it was often called P4-connector) and many mainboards still use it, so any PSU from the last decade or even more should have it.

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Thanks to all.

I bought the graphic cards for over 2 weeks.
So no chance to send them back.
So I 'must' continue with this build.


I see this correct?
DDR3-1600 (Quad-Channel):

• registered ECC (RDIMM)
  
• unbuffered ECC (UDIMM)
  

Lowest/fastest CL is 11 for both ECC versions?

CL9 isn't available?


I read that the RDIMM communicate every 2nd CPU cycle.
I read that the UDIMM communicate every (1st) CPU cycle.
Is this correct?
So UDIMM is faster (with 2x 16GB (each CPU 4x 4GB), whole system 32GB) with same CL/timings settings?


Thanks.

* Best regards! :-) * Philip J. Fry, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *

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Difference between RDIMM and UDIMM:
http://www.vlsiencyclopedia.com/2012/07/difference-between-rdimm-and-udimm.html

"... for two or more DIMMs per channel, RDIMMs will have lower latency and better bandwidth than UDIMMs."

"for a single DIMM per channel, UDIMMs produce approximately 0.5% better memory bandwidth than RDIMMs"
"For two DIMMs per channel, RDIMMs are about 8.7% faster than UDIMMs."

"In addition, please note that UDIMMs are limited to 2 DIMMs per channel so RDIMMs must be used if greater than 2 DIMMs per channel"


Why RDIMM/UDIMM memory matters
http://jpaul.me/?p=1078

RDIMMs maximize server performance, reliability, and scalability
http://www.eetimes.com/document.asp?doc_id=1279507

Unbuffered versus Registered ECC Memory – Difference between ECC UDIMMs and RDIMMs
http://www.servethehome.com/unbuffered-registered-ecc-memory-difference-ecc-udimms-rdimms/

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- ALF - "Find out what you don't do well ..... then don't do it!" :)
 

Thanks.

I was surprised as I got the CPUs that the heatspreader look different than I thought.
The Xeon heatspreader have a little hole on the top (example, picture).

Which heatsink I could use, maybe just Intel heatsinks which have a little round bottom/contact surface (my QX6700 boxed, had such heatsink)?
Specially Intel Xeon heatsinks?

How I must use the thermal paste? I can't apply on the whole heatspreader ..

I looked around, but didn't found answers.

Thanks.

* Best regards! :-) * Philip J. Fry, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *

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Well, I don't see, why such hole should disturb, if there was something sticking out of it, than that might be an issue.

What's on the mainboard? The standard Intel 4 mountig holes? Compare with your C2D, if it the same, than you should be able to use same type of cooler.

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I think thermal paste shouldn't go into this little hole ..
In past I applied it over the whole heatspreader.

The motherboard have 2x 2011 sockets.
The regular 2011 heatsinks would go I guess, but wouldn't have full contact, because less used thermal paste (not whole heatspreader used/contact)..

I guess I would need to use the Intel heatsinks with little round bottom/contact surface.

How work the Intel Turbo Boost Technology v2?
For example I install a heatsink which cool down the CPUs very much.
The CPUs run at highest GHz just if just one or a few threads are fully used, correct?
If all threads are fully used, just the lowest GHz work, correct? No matter how cool the CPUs are, correct?
If all threads are used, but not fully, at lowest or highest GHz work the CPUs (the temperature plays a role here?)?

Thanks.

* Best regards! :-) * Philip J. Fry, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *

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I think thermal paste shouldn't go into this little hole ..
In past I applied it over the whole heatspreader.

Well, I dont see on the photo what's in the hole... but I don't think Intel put something in there, what can't get in contact with thermal paste.

In general you should use so little thermal paste, that no significant amount of it should go inside the hole. OTOH, most thermal pastes are nonconductive, so there should not happen much. I mean, before heatspreaders we also sometimes got some rests of thermal paste on the components around the core and nothing happend. So just use a nonconductive paste.

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The hole is a breather hole (these have been around since the P4 days) and should not be blocked (they are there to stop air pressure buildup under the heatspreader when things get warm).

I've also never spread thermal paste over a CPU, just a blob in the center of the heatspreader the size of a grain of long grain rice is all you should need and the heatsink will do the spreading (heatspreaders cover a much larger area than the core/s underneath them).

Cheers.

I always just stuck a pen or something else handy in the hole when applying paste to my CPU's. Some thermal compound will get down there on its own over time, but to date this has not been an issue for me.

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SETI@home classic workunits: 93,865 CPU time: 863,447 hours
Join the [url=http://tinyurl.com/8y46zvu]BP6/VP6 User Group[

Is this little hole on the top of the IHS now regular for all CPUs, or just for/at the Xeon's?

The last CPU I installed was the E7600 (the QX6700 looks the same) which have an opening on the bottom at the IHS (example, picture).

I could install a regular 2011 heatsink (with a big bottom) on this Xeon CPU with this little hole?
The heatsink will not close this little hole?

* Best regards! :-) * Philip J. Fry, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *

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I could install a regular 2011 heatsink (with a big bottom) on this Xeon CPU with this little hole?
The heatsink will not close this little hole?

As long as you don't cover the hole, you can install any compatible heatsink.

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But every regular 2011 heatsink will cover this little hole, I guess (example, picture), because the bottom have the same or bigger size than the CPU.

* Best regards! :-) * Philip J. Fry, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *

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But every regular 2011 heatsink will cover this little hole, I guess (example, picture), because the bottom have the same or bigger size than the CPU.

* Best regards! :-) * Philip J. Fry, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *

That breather hole in the top is to let gasses escape while the heatspreader is being soldered to the die at the factory. Use non conductive paste, not too much, long grain of rice sized, as mentioned earlier in the thread.

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"Living by the wisdom of computer science doesn't sound so bad after all. And unlike most advice, it's backed up by proofs." -- Algorithms to live by: The computer science of human decisions.

This info may be of use:
http://www.servethehome.com/narrow-ilm-square-ilm-lga2011-heatsink-differences/

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- ALF - "Find out what you don't do well ..... then don't do it!" :)
 

Thanks to all.

Yes, still under construction ..

I go now with the >ASUS Z9PE-D8 WS< board. The box was completely filled .. ;-)

In the specs:

8 x DIMM, Max. 64GB, DDR3 2133(O.C.)/2000(O.C.)/1866/1600/1333/1066 MHz ECC, Non-ECC, Un-buffered Memory *1
Quad Channel Memory Architecture

1* E5-2600 series CPU support DDR3-2133(O.C)/2000(O.C)/1866(O.C)/1600/1333/1066 MHz
1* E5-2600 V2 series CPU support DDR3-1866/1600/1333/1066 MHz

Someone know why with the v2 CPUs no overclock of the system RAM is possible? Maybe because of something different inside the CPUs?
My E5-2630v2 support max. DDR3-1600 speed normally.

In the manual I can read nothing about system RAM overclocking.
ASUS support just answered: "It's like it's written there."

But, maybe it's nevertheless possible to overclock_the/let_run_faster system RAM with the v2 CPUs? My E5-2630v2 with DDR3-2133 RAM?
The support can't know everything (from my experiences).

Thanks.

* Best regards! :-) * Philip J. Fry, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *

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Someone know why with the v2 CPUs no overclock of the system RAM is possible? Maybe because of something different inside the CPUs?
My E5-2630v2 support max. DDR3-1600 speed normally.

What do you mean by no overclock possible? Have you tried setting the speed manually in the BIOS with the correct RAM timings for the RAM you bought?

Yeah, you can't overclock those CPU's, but you should be able to select the memory multiplier.

Cheers.

Thanks to all.

To now I don't have bought the system RAM.
I just wanted to know which system RAM I could buy.

If I buy DDR3-2133 system RAM, but if with this board/CPU combi the RAM just run at DDR3-1600 speed, I could buy cheaper DDR3-1600 system RAM (this was my thinking).

* Best regards! :-) * Philip J. Fry, team seti.international founder. * Optimize your PC for higher RAC. * SETI@home needs your help. *

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