Phase change mobo roundup? 8 Pack?

DamoTourettes

DamoTourettes

DamoTourettes

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Hi there,

Am building (potentially up to about 20 phase changed machines to go into a data centre environment) in which I want to put a number of IB chips clocked to around 6.0Ghz stable (maybe pull them back a bit if required to keep them properly stable).

I've been looking at the EVGA Z77 FTW board along with the Maximus Extreme V Formula - can anyone comment on which of these is preferable in a sub ambient environment, and why they'd prefer one over the other?

Cheers in advance.
 
dazzerd said:
You'd be better advised going over to a more speicialist forum for that kind of knowledge I think.
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I'd say xtreme-systems if the account didn't cost money. Try overclock.net they have a phase change forum over there IIRC.

Out of interest, what are you using the machines for?
 
6.0 ghz 24/7 is impossible you would need cascades for that and they cant run that length of time due to oil clogging problems.

You would also have to select chips carefully as not all reach 6ghz at -100. Problems with condensation would be horrendous too.

You would be better going Rotary SIngle stages and running the CPU's at 5.6ghz 24/7. I would suggest this is achievable.

For the units speak with Little Devil of LD cooling he supplies me with all my units and if you wanted to test one bring round your kit and lets give it a go.

Or we could use some of my hardware.

MVG works great on the cold surely for that application your not looking at multiple graphics?? MVG also works well with High Frequency DIMMS if your looking to get every last bit out of the system
 
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Hi 8 Pack - would be great to give you a call to discuss what I'm doing - after checking a few of your posts on here and also your hwbot page, it really seems like you know your onions! How do we go about making the connection?

Basically what I've got at the moment is about 30 machines in data centres running SB on air OC'd to ~5.1Ghz on Asus Maximus Extreme IV mobos - we're looking to take the next step with IB (which is about 5-10% clock for clock faster due to architectural differences) which would give us considerable speed advantage (even at the same clocks).

I've already bought a SS system from LDCooling - (PC-V2 with the XL Suction) which arrives next Monday along with a bench. Basically I'm a complete phase change noob, but we're very serious about testing this rig before potentially deploying them wide scale - if you could assist I'd be really grateful.

Cheers :)
 
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I have an account from Time back and post about RAM mainly so no problem for me. But I only post when asked to do so as I don't believe in this new policy.
 
Vapochill by Asetek are too weak for todays CPU. They never made a newer model than the lightspeed which offered 200 watts of cooling. I heavily clocked SB-E needs 300+ watts of cooling, ideally 325 for headroon.
 
8 Pack said:
6.0 ghz 24/7 is impossible you would need cascades for that and they cant run that length of time due to oil clogging problems.

You would also have to select chips carefully as not all reach 6ghz at -100. Problems with condensation would be horrendous too.

You would be better going Rotary SIngle stages and running the CPU's at 5.6ghz 24/7. I would suggest this is achievable.

For the units speak with Little Devil of LD cooling he supplies me with all my units and if you wanted to test one bring round your kit and lets give it a go.

Or we could use some of my hardware.

MVG works great on the cold surely for that application your not looking at multiple graphics?? MVG also works well with High Frequency DIMMS if your looking to get every last bit out of the system
Click to expand...

Have got a MVF on order along with an EVGA FTW Z77 - have you used both? What's going to be the better of the 2? They arrive tomorrow.

Not looking for multiple graphics at all for the application - 4 cores running at top speed will be fine, along with 2 of the PCI-E slots populated with some pretty special cards. Thing is though, sticking them into a data centre means that I'm going to need IP over KVM to manage them down to the BIOS level, along with ideally some kind of power cycling capabilities, when I need to "finger of death" and power cycle them. I've got this kind of an implementation running at the moment, but it needs a single PCI-E slot and also requires another discrete graphics card to make it work, and the MVG has only got the three slots so I'm one short. I was thinking I might be able to use the Virtu or whatever on the MVG, but surely that's a no no when trying for top end clocks under phase? If that's the case then I basically need to use the MVF instead - has all the slots I need.

As for memory, latency is the absolute name of the game here. All the existing SB boxes I've got running are powering at 5.0-5.2Ghz @ 1600Mhz with aggressive timings - 6-8-6-24-1N is where I'm down to, stable, however I'd be very keen on seeing how this might compare to Ivy. I checked your hwbot scores 8 Pack - you're killing it man! Have ordered some TridentX (as it seems to be the stuff you used yourself). The big question in terms of what I want to do is this however - is 2666Mhz with timings of 11-13-13-35-2N etc going to give me faster throughput into chip cache and also from those special PCI-E cards than running at a lower frequency with tighter timings? I'm not moving ridiculously large amounts of data around so memory bandwidth isn't really the issue - latency is.

If you're interested in the project would be very good to have a word with you - lunch (or 5) is on me! :)
 
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I am certainly willing to help yes.

I think this certainly would be a fun project for me.

I run GSKILL period but would Trident X be better in this case I am not 100% sure. You maybe better with Pi or PSC IC based Dimms around 2300mhz 7-11-7-25 88 1T for latency reasons. We could test this easy though.

Explain to me what you would want me to do / help with and I dont see why not.
 
Excellent news - sub ambient is a completely new world for me so past the initial build of the test bench I guess I'd be looking for pointers on where I should be punting more volts (memory, etc) along with perhaps just general tips on where I can optimise to get the highest clocks for 24/7 operation - am sure you've got a million tips you've developed through experience. Not averse to trying for some SuperPi top clock runs either!

The nature of our business is something that I can't really disclose too much on here however unfortunately - is there some way I can drop you a mail?

Cheers :)
 
Also, I'm getting another EVGA SR-2 board in (have already got 4 of them dual processed running hybrid air/water coolers at about 4.4Ghz), so am interested to see what I can get out of that sucker under phase as well - hehe...
 
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