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Krisnatharok
Caveat Emptor
Premium
join:2009-02-11
Earth Orbit
kudos:12
reply to Gordo74

Re: Proposed Mother of All Builds (MOAB)

Thanks for your thoughts Gordo. I probably will wait until I am ready to take the full custom loop WC plunge and just go for a 1kw unit. I might adjust the size after doing my WC research, but right now I don't know how much extra power the pump/rads will take to cover the CPU and two GPUs.

That definitely is on the long-term to-do list, and will help me get some life out of this build. Imagine a stable 5 GHz on the 3770K...
--
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.



drslash
Goya Asma
Premium
join:2002-02-18
Marion, IA
reply to Krisnatharok

said by Krisnatharok:

That's a nice build, I think you'll like the mobo, even if its cost is a little disproportionate for your build... :x

I don't mind over buying in this situation a little due to you having very similar setup and that you will be available for questions when I put this together. Your support is worth something to me and you will be rewarded
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Moos
Tequilablob
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join:2008-12-11
Salt Lake City, UT
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Reviews:
·Comcast
reply to Krisnatharok

I agree that you should be fine with your 750 watt PSU. Looking at the amperage draw of 2 7970's you will only be pulling about 45 amps (depending on your OC). 1 7970 pulling 270 watts equates into 270/12 = 22.5 amps. Adding a second would put you you around 45 amps. I'm Pretty sure that your 12v rail on that PSU is rated a over 60. I think it would be pretty tough to provide the conditions to actually get both 7970's to pull 45 amps. Worse comes to worse you hit your over voltage protection on the PSU and there's your answer. I think you will be more than fine though.

I am interested in seeing your numbers with the kill-a-watt for comparison purposes when you get the dual setup going. My setup with the 2 7950's OC'd to 1100MHZ and an I5-2500K @ 4.4 Ghz was pulling 550-575w max at the wall using a Kill-A-watt. The highest pull during testing was found using 3dmark Vantage. Ive been watching it under various real world conditions and have not seen it higher than this. During the unigine benchmark it barely breaks 500. Gaming is usually in the 400's with games like Crysis 3 @2560x1440 and BF3 at 5760x1080. Max settings on both games.

On another topic, when I added my second 7950 my temps would get up to about 80C on the top GPU. I added more fans and had to play with placing quite a bit. I tried them in about a million configurations changing locations and exhaust/intake. I found the one configuration that works the best is when I mounted a fan to the HDD cage blowing across 2 GPU's. I have the Corsair Carbide 500r, but your Thor looks similar and I think you could mount a fan to the HDD cage too. I'll post some pics if your interested in seeing them. I have not seen the temps on the top GPU get out of the 60C range with this setup.

Your thread is making me want to upgrade motherboard and CPU!



Krisnatharok
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Earth Orbit
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said by Moos:

My setup with the 2 7950's OC'd to 1100MHZ and an I5-2500K @ 4.4 Ghz was pulling 550-575w max at the wall using a Kill-A-watt. The highest pull during testing was found using 3dmark Vantage. Ive been watching it under various real world conditions and have not seen it higher than this. During the unigine benchmark it barely breaks 500.

Have you tried the OCCT PSU stress-test? Running Linpack simultaneously with Furmark is probably the most brutal, short of adding an HDD write test with a large file on top of it...
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Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.


Krisnatharok
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Earth Orbit
kudos:12
reply to Krisnatharok

On a related note, I've been looking for a second 7970 Vapor-X (3GB), and it's been difficult. I would have posted this »[WTB] Sapphire Vapor-X Radeon 7970 3GB but the mods jumped the gun and locked it pretty quickly:

To show you how in-demand the Vapor-X is, I got the Newegg notification @ 1:04PM that my model was back in stock. When I clicked on the link at 1:20PM, it was already showing Out of Stock/Discontinued again:

»www.newegg.com/Product/Product.a···14202001

I placed an order with SuperBiiz and they came and said they were getting their next shipment in today.
--
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.



Ghastlyone
Premium
join:2009-01-07
Las Vegas, NV
kudos:5

The EVGA Classified 680 is the exact same way. You literally have to be sitting at the PC and order when they come back in stock. If not, you aint getting one.



DarkLogix
Texan and Proud
Premium
join:2008-10-23
Baytown, TX
kudos:3

said by Ghastlyone:

The EVGA Classified 680 is the exact same way. You literally have to be sitting at the PC and order when they come back in stock. If not, you aint getting one.

Or have the hook ups (you know, know the right people.)
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Krisnatharok
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Earth Orbit
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Pssst, DarkLogix See Profile, you don't know any... Sapphire people, do you?


Chrno

join:2003-12-11
reply to Gordo74

It would depend on the intended use of the system. The system would make a great BTC miner and in that case, with 2 cards, you will see some very inflated numbers (sustained). Running hashes with this card will yield numbers very similar to those found while running furmark.

3DMark isn't the right bench to use if you want to find what the card is capable of drawing.



DarkLogix
Texan and Proud
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join:2008-10-23
Baytown, TX
kudos:3
reply to Krisnatharok

said by Krisnatharok:

Pssst, DarkLogix See Profile, you don't know any... Sapphire people, do you?

Sorry I only try to make contact with nvidia peeps


Krisnatharok
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join:2009-02-11
Earth Orbit
kudos:12

fanboy



Gordo74
Premium
join:2003-10-28
Monroeville, PA
reply to Chrno

said by Chrno:

It would depend on the intended use of the system. The system would make a great BTC miner and in that case, with 2 cards, you will see some very inflated numbers (sustained). Running hashes with this card will yield numbers very similar to those found while running furmark.

3DMark isn't the right bench to use if you want to find what the card is capable of drawing.

Which he openly said in this thread he is not doing. Even if he was, as others have stated, he is not close to the amperage rating on the 12v rail. That PSU is fine for that system for years to come (unless full custom WC is added, which has already been discussed)


Krisnatharok
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reply to Chrno

said by Chrno:

It would depend on the intended use of the system. The system would make a great BTC miner and in that case, with 2 cards, you will see some very inflated numbers (sustained). Running hashes with this card will yield numbers very similar to those found while running furmark.

3DMark isn't the right bench to use if you want to find what the card is capable of drawing.

I don't even know how bitcoin mining works. You should do a PSA/how-to-get-started in this forum.
--
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.


DarkLogix
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join:2008-10-23
Baytown, TX
kudos:3
reply to Krisnatharok

said by Krisnatharok:

fanboy

Maybe, but got burned by bad drivers and inconsistent UI with ATI

AM I a fanboy if I just don't consider AIT to be in existence? Intel and Nvidia make some fine products and when intel gets a GPU to the level of the titan then I'll consider not using nvidia MAYBE.
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»www.change.org/petitions/create-···imcity-4


DarkLogix
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Baytown, TX
kudos:3
reply to Krisnatharok

said by Krisnatharok:

said by Chrno:

It would depend on the intended use of the system. The system would make a great BTC miner and in that case, with 2 cards, you will see some very inflated numbers (sustained). Running hashes with this card will yield numbers very similar to those found while running furmark.

3DMark isn't the right bench to use if you want to find what the card is capable of drawing.

I don't even know how bitcoin mining works. You should do a PSA/how-to-get-started in this forum.

All I know is it uses lots of CPU and GPU power to make hashes.

And it seems the value of a BTC has gone way up due to how more power its taking to get new hashes.

Security NOW breifly talked about it as it seems the DB that used to be the goto one for mining was updated and somehow broke mining.
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Krisnatharok
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reply to DarkLogix

said by DarkLogix:

said by Krisnatharok:

fanboy

Maybe, but got burned by bad drivers and inconsistent UI with ATI

AM I a fanboy if I just don't consider AIT to be in existence? Intel and Nvidia make some fine products and when intel gets a GPU to the level of the titan then I'll consider not using nvidia MAYBE.

Eh, I've said it before, but both companies have their share of (past and present) driver problems or hardware design issues, at times. They're fairly equal, and up until Titan, AMD wore the power king crown. I've not been impressed by the OC potential of the 600 series. It remains to be see how well Titan scales down to a ~$400 GPU capable of tangling with the 7970.
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Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.


DarkLogix
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Based on what I'd read I'd consider the Titan in the same place as the GTX585 was but for the 600 and with a cool name.

IE we're still not on the 700's yet.



Krisnatharok
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Earth Orbit
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Except that it has a $200 premium attached to it, and really only for being able to boast owning the single most powerful card in existence.

Two 7970s blow it away on EVERYTHING except power/heat/noise. And for $200 less (or cheaper). It's nothing but a refined wimp in comparison.

PowerColor 7970 - $377 (w/free shipping): »www.superbiiz.com/detail.php?nam···3V3&c=CJ

And based on my personal experience, I can vouch for the ridiculous OC potential the 7970s have. Even pushing 1220mhz, my card is running out of power (with a +10% voltage bump) before it is getting warm, it maxes out at 72 C.
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Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.



DarkLogix
Texan and Proud
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Baytown, TX
kudos:3

Buying the "best" is always going to have a premium

And nether nvidia or AIT care about OC potential.



Krisnatharok
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Earth Orbit
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reply to Krisnatharok

Aaaand SuperBiiz just let me know that my second Vapor-X just shipped. Fuck yeah!



Krisnatharok
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Earth Orbit
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reply to DarkLogix

said by DarkLogix:

And nether nvidia or AIT care about OC potential.

I'm a little confused by your statement. It's rare to find the enthusiast rich enough to drop $500 to $1000 on an aftermarket GPU and not care about how well it overclocks.

I would venture to guess that the super-uber-rich-but-non-technical gamer market is smaller than the rich enthusiast market, but I could be wrong.

Could we stop calling it AIT or ATI? It's AMD, and has been for a while.
--
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.


DarkLogix
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Baytown, TX
kudos:3

The enthusiast does care about OC, Nvidia and ATI don't.

to them if the consumer can OC fine but they aren't going to rework their process to have higher OC yields.

Now the card assemblers (EVGA for example) do care about OC.
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DarkLogix
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Baytown, TX
kudos:3
reply to Krisnatharok

said by Krisnatharok:

Could we stop calling it AIT or ATI? It's AMD, and has been for a while.

No its ATI as far as I care, plus it ensures the differentiation between the GPU and CPU sides.
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»www.change.org/petitions/create-···imcity-4


Krisnatharok
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Earth Orbit
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said by DarkLogix:

said by Krisnatharok:

Could we stop calling it AIT or ATI? It's AMD, and has been for a while.

No its ATI as far as I care, plus it ensures the differentiation between the GPU and CPU sides.

Sheesh, that's being a little difficult. It's been one company since 2006.
--
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.


Ghastlyone
Premium
join:2009-01-07
Las Vegas, NV
kudos:5

said by Krisnatharok:

said by DarkLogix:

said by Krisnatharok:

Could we stop calling it AIT or ATI? It's AMD, and has been for a while.

No its ATI as far as I care, plus it ensures the differentiation between the GPU and CPU sides.

Sheesh, that's being a little difficult. It's been one company since 2006.

Differentiation? By mentioned the wrong name of a company?

Yeah....that won't confuse anyone. lol


Krisnatharok
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Earth Orbit
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hey bro, I hear you hate ATI, so you buy 3dfx cards, amirite?



Krisnatharok
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Anandtech review of the mobo I used:

»www.anandtech.com/show/6850/asus···g-review

highlight:

Overclocking results some of the best we have seen on Z77, easily hitting a massive 5.0 GHz with our review sample without issues, and seemingly would go beyond this given a better cooling environment. ASUS is increasing the levels of manual overclock options in the BIOS, with CPU Level UP giving three different speeds to choose as well as a Gamer OC mode. BIOS options for overclocking, as always with ASUS, are top notch, and we were able to push our RAM harder and further with our CPU in the MVF than in any other Z77 motherboard.


--
Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety.


Gordo74
Premium
join:2003-10-28
Monroeville, PA

said by Krisnatharok:

Anandtech review of the mobo I used:

»www.anandtech.com/show/6850/asus···g-review

highlight:

Overclocking results some of the best we have seen on Z77, easily hitting a massive 5.0 GHz with our review sample without issues, and seemingly would go beyond this given a better cooling environment. ASUS is increasing the levels of manual overclock options in the BIOS, with CPU Level UP giving three different speeds to choose as well as a Gamer OC mode. BIOS options for overclocking, as always with ASUS, are top notch, and we were able to push our RAM harder and further with our CPU in the MVF than in any other Z77 motherboard.

.... "When we received our 8th sample after the others had various problems such as dead RAM slots and plain DOA boards, ...."


Krisnatharok
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Won't argue that one.


ohh

join:2011-07-16
San Jose, CA
reply to Krisnatharok

Very jealous >:[ two more days before I can build mine.

AHHHHHHH! Are you going to run yours OC'd? I might OC mine to 4.5ghz maybe a little higher and call it a day.