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GTX 750 Ti mining - Page 35

post #341 of 1291
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Quote:
Originally Posted by HardwareDecoder View Post

I went to home depot and had the, cut some of that cheap backer board stuff to line my shelving units.

Cement based backer board: Wonderboard/Hardibacker?

Or Drywall : "sheetrock"?
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post #342 of 1291
Quote:
Originally Posted by HardwareDecoder View Post

I went to home depot and had the, cut some of that cheap backer board stuff to line my shelving units.
Quote:
Originally Posted by AlphaC View Post

Cement based backer board: Wonderboard/Hardibacker?

Or Drywall : "sheetrock"?

no no not hardibacker haha thats the stuff I used to re-do the tile in my shower.

maybe i'm not using the right name. It's just some fiber material looks kind of like cardboard but is hard.
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post #343 of 1291
Quote:
Originally Posted by TheLAWNOOB View Post

On a flat and non-conductive surface?

Yeah, what I mean though is what can I use to space the motherboard off of say the bottom of an egg crate? Would something like these work: www.amazon.com/gp/product/B00004YOHP/ just placing them under the corners? Basically what I'm trying to ask is, what can I use that will be conductively safe to lay down the board on? smile.gif

EDIT: I plan on using milk crates to build a couple of rigs with. Basically just want to know what type of material to use underneath the motherboard between it and the egg crate smile.gif.

Thanks for your replies all.
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post #344 of 1291
Quote:
Originally Posted by battleaxe View Post

What settings are you using to get this hash rate on the 780?

cudaminer.exe -d GTX780 -m 0 -l T12x24 -i 0 -H 2 -C 0 -o stratum+tcp://pool.manicminer.in:3333 -u ivanlabrie.1 -p x

Oc the core till it crashes after a while and dial it down...I'm using skynet's bios to raise the tdp limits and be able to undervolt while at it.
Quote:
Originally Posted by GoldenTiger View Post

This is going to be really dumb-sounding, but what exactly are people laying their motherboards down onto/attaching them to when using shelving or egg crates for cases? I'd love to get my mining going using a bunch of 750 Ti's since they run so quiet and cool. I have the general idea as to what to set them up in, but that one bit is throwing me off.

Quote:
Originally Posted by GoldenTiger View Post

Yeah, what I mean though is what can I use to space the motherboard off of say the bottom of an egg crate? Would something like these work: www.amazon.com/gp/product/B00004YOHP/ just placing them under the corners? Basically what I'm trying to ask is, what can I use that will be conductively safe to lay down the board on? smile.gif

EDIT: I plan on using milk crates to build a couple of rigs with. Basically just want to know what type of material to use underneath the motherboard between it and the egg crate smile.gif.

Thanks for your replies all.

You can find some plastic feet thingies that fit in the mobo screw holes.
Either that or some wood slabs tongue.gif
If using risers it don't matter much...
post #345 of 1291
Do we have to install the nvidia 334.21 Linux driver or does it work for farming with the latest ubuntu nvidia package?
post #346 of 1291
Does anyone here use a Galaxy 750 TI GC? I just pulled the trigger on 2 of these.
Quote:
Originally Posted by ivanlabrie View Post

cudaminer.exe -d GTX780 -m 0 -l T12x24 -i 0 -H 2 -C 0 -o stratum+tcp://pool.manicminer.in:3333 -u ivanlabrie.1 -p x

Oc the core till it crashes after a while and dial it down...I'm using skynet's bios to raise the tdp limits and be able to undervolt while at it.

You can find some plastic feet thingies that fit in the mobo screw holes.
Either that or some wood slabs tongue.gif
If using risers it don't matter much...

What's the highest you can get your core at the lowest voltage? My galaxy HOF runs at 1085mhz @ .950V pulls 580 Khash usuing around 200w from the wall. The reference evga 780 I have can only go down to .975v @ 980mhz pulling 520 khash but only using 160 watts.

These numbers are much improved when I over clock the core and set the power target % to 75-80. The HOF runs at 69C (top card) and the EVGA with the prolimatech mk 26 runs at 44C.

I also only us -l T24x24 for my 780's, gives me a bit more khash versus T12x24.
post #347 of 1291
Quote:
Originally Posted by xartic1 View Post

Does anyone here use a Galaxy 750 TI GC? I just pulled the trigger on 2 of these.
What's the highest you can get your core at the lowest voltage? My galaxy HOF runs at 1085mhz @ .950V pulls 580 Khash usuing around 200w from the wall. The reference evga 780 I have can only go down to .975v @ 980mhz pulling 520 khash but only using 160 watts.

These numbers are much improved when I over clock the core and set the power target % to 75-80. The HOF runs at 69C (top card) and the EVGA with the prolimatech mk 26 runs at 44C.

I also only us -l T24x24 for my 780's, gives me a bit more khash versus T12x24.

I'll give it a shot...didn't mess much with them. (two reference EVGA's SC)

EDIT: Had to downclock them, temps were getting out of control inside a Haf XB.
So 624kh/s per card at 1175mhz core with 1100mv, power draw is still pretty damn high.
Edited by ivanlabrie - 3/8/14 at 7:52am
post #348 of 1291
Quote:
Originally Posted by ivanlabrie View Post

I'll give it a shot...didn't mess much with them. (two reference EVGA's SC)

EDIT: Had to downclock them, temps were getting out of control inside a Haf XB.
So 624kh/s per card at 1175mhz core with 1100mv, power draw is still pretty damn high.

What's the wattage you're pulling? Also, you have references so that may be why you experience high temps.
post #349 of 1291
Yeah, fan is maxed out tongue.gif

But actually, ref cooler works best for sli on air so...windforce or something would be even worse.

It's my uncle's rig not mine btw, I used to have a WF 780 that did 716kh/s, the EVGA's don't like going past 650kh/s.

They are currently pulling 1264kh/s at 83% tdp (skynet bios' 100%=330w)
Edited by ivanlabrie - 3/8/14 at 9:44am
post #350 of 1291
My 6 card Gigabyte 750ti rig has been running for 48 hours now without any major issues (cudaminer crashed once,so I lowered overclock on the memory by 10 Mhz).





I used a foldable plastic shopping crate as case. I put the mainboard in the box it came in and cut off the top.

As discussed before, (powered) risers have quite an impact on memory clock speeds and kh/s. I had to lower the memory clock by 200Mhz on my 6 card setup and my hashrate dropped by about 20-25 kh/s per card.
Currently I'm getting 1780 kh/s at 550Watts (measured at the wall) using these arguments: -l T10x24 -C 1 -i 0 -m 1. T5x24 yields the same results as does it without the -m 1 parameter. This is with an overclock of +135/+425 per card.
Without overclock I get 1550 kh/s at 490 Watts, so for me the OC is definitely worth it (in contrary to the guys over at the cryptomining blog, which have exactly the same setup).
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