Overclocked 5Ghz Sandy Bridge datacentre build out...

DamoTourettes said:
As for watercooling, I'm presently in discussion with our datacentres about whether this is feasible in a unit like the Corsair H70...
Click to expand...

Dont bother fighting to get an H70. There are plenty of air coolers that are cheaper and will outperform it.

Noctua NH-D14 for a start.

Since only one core will be running 100% heat should not be such a big deal in any case.
 
I'd love to hear the details and reasoning as to why multithreading isn't possible.. Structured arrays/parents/timestampedSQL whatever it takes.

It'll pay for itself if you're after solely processing power.

Just trying to bypass a brick wall proposed to you by C++ devs rather than be subdued by it.
 
Snooble said:
I'd love to hear the details and reasoning as to why multithreading isn't possible.. Structured arrays/parents/timestampedSQL whatever it takes.

It'll pay for itself if you're after solely processing power.

Just trying to bypass a brick wall proposed to you by C++ devs rather than be subdued by it.
Click to expand...

I'd love to give you full disclosure, but unfortunately I really can't say anything about it, suffice to say that everything you've proposed has been considered, tested and discounted...

We're not after processing power - we're after low latency.
 
eddyc said:
Dont bother fighting to get an H70. There are plenty of air coolers that are cheaper and will outperform it.

Noctua NH-D14 for a start.

Since only one core will be running 100% heat should not be such a big deal in any case.
Click to expand...

Hey, cheers. Have you done a comparison side by side and have you had any issues with a SB mobo that has been a problem with this? I've heard it's great, however utterly massive? Any issues with RAM seating with it?
 
DamoTourettes said:
I'd love to give you full disclosure, but unfortunately I really can't say anything about it, suffice to say that everything you've proposed has been considered, tested and discounted...

We're not after processing power - we're after low latency.
Click to expand...

What OS are you going to be running the application on?
 
DamoTourettes said:
Finally, someone that addresses the questions I asked specifically. Many thanks for your comments.

My understanding is that Maximus has better heatsink capabilities on the board rather than the P8P67 Pro - is this the case or is the only tangible difference between them the Tri SLI capabilities? I've read your experiences with OC'ing to 5Ghz, and it appears that BIOS revisions were important as well - if I might ask, what was your total setup? RAM? Cooler? etc?

Thanks again for your comments - anything else you might think relevant would be gladly received. :)
Click to expand...

I have not tried the Maximus... I have the Pro and chipset temps have never been an issue, not even close, which is why I say i don't think you need the Maximus.

The latest bioses should let you hit 5GHz... personally I found the RAM / Memory relationship were important, but now I think it's all a case of ensuring both the CPU and the RAM are very well seated and have clean contacts.

My personal setup is
i7 2600K
Asus P8P67 pro
4GB OCZ 1600 Ram 6-8-6-24 1T
OCZ 700W Mod Streme PSU
H50 Cooler

Although I only have 1 CPU now, I have tried 2 and both did 5GHz prime stable for an hour, but I have reports from other overclockers that some dont do 5Ghz although not seen myself.
 
You really don't want to be running important financial processing on off the shelf, overclocked consumer CPUs... personally I'd be talking to someone like IBM.
 
OK I know where you are coming from, did similar stuff in the past where I worked before.

Don't bother with the 2600K stick with the 2500K as you don't need the Hyperthreading.

I'd say realistically you are looking at 4.6Ghz stable 24/7 with good cooling, I'm assuming you aren't going to be trying to fit these in 1U racks right? :)

Anyway you can setup the SB chipset so that it can load the cpu at different levels depending on what load the entire system is under so you could say get maximum overclock on 2 cores when its really crunching some sums and clock back down when its doing something else.

Sounds like a fun project, takes me back.. :)
 
DamoTourettes said:
There are multiple reasons why we wouldn't go for that chip, none of which I can discuss here. Sorry. :(
Click to expand...

Not saying you should go with that chip - its outside the league of anything thats not a major multi-national corporation anyhow really. Just saying I'd be approaching someone like IBM if I was dealing with serious financial number crunching for a medium size or larger business.
 
Biffa said:
OK I know where you are coming from, did similar stuff in the past where I worked before.

Don't bother with the 2600K stick with the 2500K as you don't need the Hyperthreading.

I'd say realistically you are looking at 4.6Ghz stable 24/7 with good cooling, I'm assuming you aren't going to be trying to fit these in 1U racks right? :)

Anyway you can setup the SB chipset so that it can load the cpu at different levels depending on what load the entire system is under so you could say get maximum overclock on 2 cores when its really crunching some sums and clock back down when its doing something else.

Sounds like a fun project, takes me back.. :)
Click to expand...

Sounds good to me - thanks for all your pointers. At the moment I've looked at a spec which is: -

Intel Core i7-2600k Sandy Bridge processor
Asus Maximus IV Extreme Intel P67 motherboard
Corsair Dominator GT 4GB (2x2GB) PC3-17066 (2133Mhz) RAM Kit
Corsair Gold AX850 High Performance 850W power supply
Noctua NH-D14 processor cooler
IC Diamond 24-Carat Thermal Compound

I'm just going to lab this up and see what I can get out of it initially - a stable 4.6+ is a good place for us to see how it compares to the Xeons we already have. And yes, 1U servers are obviously out of the equation, in no small part to the Noctua-monster, right? :)

Cheers for the tips on the CPU's as well - I can't really say too much about our application, but we're well aware of the ability to load the chipset.
 
You need a graphics card as well, something 2d and cheap I imagine, probably passive. SB gpu doesn't work on the P67 chipset

Doubt you need the Maximus IV level, thats overkill really, you could get away with the MSI P67A-GD55/65, Asus P67A-Pro something uncomplicated and mid-range. The less "features" the better really.

Memory wise similar. You can't really overclock the FSB on the SB chipsets, its all down to the multi on the cpu. So you can go top dog on the memory, but research cool running at 16000 low voltage as long as it does C1 with low latency you should be rocking :) Unless your application is bandwidth starved, but it doesn't sound like it if its not multi-threaded. Obviously its your budget but the money you save per unit could easily pay for more units :cool:
 
Biffa said:
You need a graphics card as well, something 2d and cheap I imagine, probably passive. SB gpu doesn't work on the P67 chipset

Doubt you need the Maximus IV level, thats overkill really, you could get away with the MSI P67A-GD55/65, Asus P67A-Pro something uncomplicated and mid-range. The less "features" the better really.

Memory wise similar. You can't really overclock the FSB on the SB chipsets, its all down to the multi on the cpu. So you can go top dog on the memory, but research cool running at 16000 low voltage as long as it does C1 with low latency you should be rocking :) Unless your application is bandwidth starved, but it doesn't sound like it if its not multi-threaded. Obviously its your budget but the money you save per unit could easily pay for more units :cool:
Click to expand...

Hey Biffa,

Thanks a lot for your input - you've simply confirmed all the points I was thinking myself. Cheers! :)

(Just one point - what's this magical C1 of which you speak?)
 
DamoTourettes said:
Hey Biffa,

Thanks a lot for your input - you've simply confirmed all the points I was thinking myself. Cheers! :)

(Just one point - what's this magical C1 of which you speak?)
Click to expand...

CR1 I meant :) Command Rate. Some people just call it 1T/2T/3T etc. 1T is the Command Rate you want.
 
You must log in or register to reply here.
Back
Top Bottom