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Re: 4x Titan Z Build Complete!

PostPosted: Thu Dec 18, 2014 11:30 pm
by FrankPooleFloating
Ahhh... The Air Penetrator fans were not on my radar.... Intriguing. Okay, perhaps a perfect workstation after all. ;)

Re: 4x Titan Z Build Complete!

PostPosted: Fri Dec 19, 2014 3:34 pm
by Bulwerk
New OC numbers for those interested.
Forgive the excessive amount of pics...

I pushed power to %120, and added 250Mhz to core and memory
Afterburn OC.png

GPUZ-OC.png

What GPU-Zs sensor was picking up under full load
GPUZ-OC-2.png


Benchmark numbers

Pathtracing
Pathterm @ 0.3


CR= Coherent Ratio

CR 0.0------- 82 Ms/s
PT_CR-0.png


CR 0.5------ 98.7 Ms/s
PT_CR-0.5.png


CR 1.0------ 108.94 Ms/s
PT_CR-1.png


After Running the Bench for ~20 minutes with fans on full blast (Still quieter than one of our workstations with a 780ti on air !), liquid temps were at 51˚C
Water Temp 1 copy.png
Water Temp 1 copy.png (10.96 KiB) Viewed 2962 times


GPU temps were between 60-73˚C

I'd say those are some pretty respectable temps for 8 Overclocked GPUs in one Chassis in a room thats 24˚C!

Re: 4x Titan Z Build Complete!

PostPosted: Fri Dec 19, 2014 8:07 pm
by Seekerfinder
Wow. 82Ms/s?! That's around $155/(Ms/s)... I'll have to do a bench on the latest release but I suspect I'm around $300/Ms or more... Great value after all it seems Bulwerk.

Are you finding the OC to be stable?

Seeker

Re: 4x Titan Z Build Complete!

PostPosted: Fri Dec 19, 2014 8:55 pm
by Bulwerk
So far the OC is stable... crossing my fingers ;)

Check here for latest benchmark numbers
http://render.otoy.com/forum/viewtopic.php?f=9&t=7144&p=216130#p216130

Re: 4x Titan Z Build Complete!

PostPosted: Fri Dec 19, 2014 9:54 pm
by smicha
Much better temps Bulwerk, keep them around 50C (I mean water temp). Great results.

PS. I did some minor tweaks to my rig today. I'll post more photos soon. Man, I wish I had your Zs :)

Re: 4x Titan Z Build Complete!

PostPosted: Sat Dec 20, 2014 11:21 am
by SkatingJesus
Bloody fantastic war machine! :D

Re: 4x Titan Z Build Complete!

PostPosted: Tue Dec 30, 2014 2:21 am
by Jose

Re: 4x Titan Z Build Complete!

PostPosted: Wed Dec 31, 2014 9:42 am
by asher
Does your device manager sees 4 GPus or 8??? Titan Z are just two 780 cards with double ram into one board..... curius if you get in octane 12Gb of ram for scenes or just 6, as i expect???

Thank you.

Asher

Re: 4x Titan Z Build Complete!

PostPosted: Wed Dec 31, 2014 10:42 am
by rappet
asher wrote:Does your device manager sees 4 GPus or 8??? Titan Z are just two 780 cards with double ram into one board..... curius if you get in octane 12Gb of ram for scenes or just 6, as i expect???

Thank you.

Asher


Octane sees both gpu from a Titan Z, so in this case it will see 8gpu.
The ram for Octane scene size is 6 Gb, not 12gb

Re: 4x Titan Z Build Complete!

PostPosted: Thu Jan 01, 2015 2:17 am
by garytyler
Maybe I'm just imagining things, but is this kind of machine capable of 24p playback in live view?