GTX750Ti... wait a sec...

Less of an overclock than I see most. these are all on powered risers, so far running stable for last 24 hours. Normally they stay at 298-305 when I'm not tinkering.

Pic quality got screwed a bit. Settings are -l T5x24 -i 0. -C is not needed for maxwell, and -H 2 is default, so no need to put them in. OC is at +33/+366. Temps steady at 53C with 46% fan. EVGA 750 ti FTW cards.

Pushing more than 35/600 ish becomes unstable so far.

Edit: Meter readings: Idle is sitting at 106, while mining its sitting at 535.

GDIxsdW.jpg
 
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Would love to see the power draw on the FTW rig above.

I'm at 1750 khash/s and 450 watts at the wall. I'm curious if the FTW cards draw substantially more power.
 
Hurin said:
Would love to see the power draw on the FTW rig above.

I'm at 1750 khash/s and 450 watts at the wall. I'm curious if the FTW cards draw substantially more power.
Click to expand...

Currently, 106 idle/535 mining with the above settings

6 Cards. Average is normally right around 1800khash
 
Muegen said:
Currently, 106 idle/535 mining with the above settings

6 Cards. Average is normally right around 1800khash
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Okay, for comparison's sake, Haswell-T-based system with six reference 750 Ti cards (full specs are prior in the thread) is idling at 75 or so if memory serves (was 45 before i added the cards), and maxes out at 450w for 1750 KH/s.

I pay $.32/kwh here. ;)
 
Hurin said:
Okay, for comparison's sake, Haswell-T-based system with six reference 750 Ti cards (full specs are prior in the thread) is idling at 75 or so if memory serves (was 45 before i added the cards), and maxes out at 450w for 1750 KH/s.

I pay $.32/kwh here. ;)
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I should have measure before adding the cards for a true read.

.32?! Im currently at .089/kwh here in Texas.
 
Hurin said:
Okay, for comparison's sake, Haswell-T-based system with six reference 750 Ti cards (full specs are prior in the thread) is idling at 75 or so if memory serves (was 45 before i added the cards), and maxes out at 450w for 1750 KH/s.

I pay $.32/kwh here. ;)
Click to expand...

Texas here as well - and paying 5.5 cents per kWh (avg cost including delivery) with a new contract through Pennywise power (North Texas - DFW area here) The actual energy charge is something like 1.5 cents, the rest is delivery fees and line fees

I'll have cheap power for the next 7 months at least :)
 
Really loving my 750ti rig, so solid, no issues so far on win 8.1. Need to add the last card, only running 5 at the moment, i just don't feel like taking it offline and doing the presence pin jumper my mobo requires. Maybe tomorrow.
 
My 750TI mining rig is almost ready. I gotta cut my peg board, and get everything zip tied down and install the OS. Here is a preview. First time I made a PVC case. I might cut the height down a bit. But I could not do the step approach like most do due to the short nature of the cards.

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Love those pvc jobs, sharp and clean. I'm going to have to get off my ass and build one. The current state of my 750 4-banger is an eyesore.
 
wow, my six-gpu rig had more headroom available than I thought. I figured I was up again the PCI-E bandwidth limitation in cudaminer.

But I just tried the new driver which unlocked the core offset for the GTX 750 Ti. . .

My cards were ranging between 280 and 295 (+135 core, 500 mem). Total KH/s was 1720-1750. 450-455w (with a hard drive also sharing my iTunes which adds 5-8w or so).

Now getting all cards in the 300-305 range with total KH/s ranging between 1790 and 1820.

It's likely now not as stable, because the GPU core offset is a crazy +215 (mem +550). System usage up from 450w to 468w.

No BIOS mods or anything. Standard reference GTX 750 Ti from eVGA (no PCI-E 6 or 8-pin power).

UPDATE: Made it up to +245 core (!), 1861 KH/s across six cards. But alas, one card is now crashing. Back to down to +235 and hope for stability at 1840-1850KH/s.
 
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nice job on the PVC - I just built my 3rd pvc rig a few days ago, been working all weekend and it's been drying. (love the gloss greay spray paint I got from home depot)

I'll throw some pics up later tonight when I get home, I tend to oversize mine on width more because I run 5 or 6 R9 270 cards and want to have the ability to throw another power supply in the PVC chassis and still have everything "fit"
 
Here is the finished product. Currently mining @ 1790-1800 KH/s PNY Ref 750TI's @ +225 and +450(core and memory) using latest beta build of cudaminer and newest WHQL Nvidia drivers. OS is 2012 R2 standard zero issues seeing 6 cards with powered USB PCI-E x1 riser cards. Asrock H81 Pro BTC board and Celeron 2 Core Haswell with IGP. Only thing I hate about this board is its very picky with USB keyboards/mice.

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2014-03-16%2019.37.50.jpg
 
I spoke to soon, on the stability. It seems, and I can't quite determine the cause...that it likes to crash every 6-12 hours. Even with low OC. I have read elsewhere that W8.1x64 is a possible issue, but not having any valid information to back this, I'm still searching for another possible cause before switching OS.

Has anyone else had stability problems on the 750 ti FTW on W8.1x64?
 
Muegen said:
I spoke to soon, on the stability. It seems, and I can't quite determine the cause...that it likes to crash every 6-12 hours. Even with low OC. I have read elsewhere that W8.1x64 is a possible issue, but not having any valid information to back this, I'm still searching for another possible cause before switching OS.

Has anyone else had stability problems on the 750 ti FTW on W8.1x64?
Click to expand...
I'm currently running Windows 8.1 x64 with six 750 ti. I'm at +134/500 as my overclock on stock cards (no factory OC).

They are stable for anywhere between 24 and 72 hours. . . and then a random card will just freak out for no apparent reason.

I confirmed that Windows 7 x64 would work with six cards, but I didn't stick around on it to see if stability was good.
 
i have 6 gigabyte 750ti cards stable for longer than two weeks at a time, pretty good overclock on them as well (+160 / +460)

Using windows 8 64-bit (not 8.1)
 
Muegen said:
I spoke to soon, on the stability. It seems, and I can't quite determine the cause...that it likes to crash every 6-12 hours. Even with low OC. I have read elsewhere that W8.1x64 is a possible issue, but not having any valid information to back this, I'm still searching for another possible cause before switching OS.

Has anyone else had stability problems on the 750 ti FTW on W8.1x64?
Click to expand...

How much core OC are you putting on them? FTWs are at +169 stock, and I found little to no increased hash with a core OC over that. Mem clock was where the hash was at.

The precisionx core/mem clocks on mine are +0/+585, +0/+585, +0/+450, +0/+425. The first two hash at about 320 normal scrypt, and the last two at about 290. On Win7 those settings will run at least 2-3 days before one pukes, usually quite a bit longer.
 
I had no idea there was a 750ti thread lol.

Here is my setup. I push about 1750 on 6 cards. I could get more if i could get gpu-z working to down load and edit the BIOS power limits.



 
Though it's been said that those who don't stick with mining lack "mental toughness". . . I'm actually thinking of bailing out. :p

With $.32/KWHour power, I was always prepared for the fact that this could have just been a fun little hobby, and cost me more in the long-run than I earned. That reality seems to be coming faster than I was expecting. . . $1-2/day ain't going to pay off the expense anytime soon. So getting the $1150 back for my seven GTX 750 Ti cards is looking like a good idea. Not to mention the $400 power supply I splurged on (to be ready for bigger Maxwell). The other components I will put to work as upgrades to my media center PC.

I'd feel a bit guilty about returning it all to newegg (have premiere and return window is running out). But I've otherwise been a lucrative customer both personally and at work for years and years. But if anyone wants to take these cards and risers off my hands instead, let me know. I'm strongly considering getting out.
 
Hurin said:
Though it's been said that those who don't stick with mining lack "mental toughness". . . I'm actually thinking of bailing out. :p

With $.32/KWHour power, I was always prepared for the fact that this could have just been a fun little hobby, and cost me more in the long-run than I earned. That reality seems to be coming faster than I was expecting. . . $1-2/day ain't going to pay off the expense anytime soon. So getting the $1150 back for my seven GTX 750 Ti cards is looking like a good idea. Not to mention the $400 power supply I splurged on (to be ready for bigger Maxwell). The other components I will put to work as upgrades to my media center PC.

I'd feel a bit guilty about returning it all to newegg (have premiere and return window is running out). But I've otherwise been a lucrative customer both personally and at work for years and years. But if anyone wants to take these cards and risers off my hands instead, let me know. I'm strongly considering getting out.
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Thats up to you. even at 3-5$ a day thats still over 1000$ extra free and clear per year. It may not seem like much, but it adds up. I understand ROI's have been pushed alot further out for most people. If you can stick with it, I would highly recommend you do so :). You never know what the next 12-18 months could bring.
 
If I didn't like it at least somewhat for the geek fun factor I never would have started again a month ago. I have $700 total in this whole deal and have made $80 over my electric cost since Mar 1st when I started. 7+ months ROI is not long considering it's the kind of thing I did for years previously for no return at all.

That said, I can see where my outlook would be different with this:

Hurin said:
$.32/KWHour power
Click to expand...
 
I think about all the power I spent folding for years. I'm ok burning a bit for coins.
 
God I need more 750 Tis -- cudaminer uses so much PCIE bandwidth though, reading 46% on an x4 slot. How Are you guys doing ok with them on risers?

I really wanted a PCIE bridge, but I really doubt it'll work with an x1 uplink to 4 x1s.. and the ones with x4 uplinks are over twice the price :\
 
FrankD400 said:
God I need more 750 Tis -- cudaminer uses so much PCIE bandwidth though, reading 46% on an x4 slot. How Are you guys doing ok with them on risers?
Click to expand...

It's a limitation but not a show stopper. My cards on risers hash somewhere between 5-10% slower than the same card in an x16 slot
 
I am running just a single Gigabyte 750ti and can pull 275 at best.

I've tried high core clock and low memory, high memory and no core and in between and it makes no difference.

If I set memory to +600 [6000] my hash rate is worse.

I just let cudaminer auto tune, usually it picks t5x24

I notice Gigabyte is now going to release a super clocked version, 1215/1296.

Funny thing is nobody has a factory memory overclock, all stock at 5400.

I am lucky if I can pull down a buck worth of LTC a day.

Least my power rate is low, 5.5 cents.
 
Vengance_01 said:
Thats up to you. even at 3-5$ a day thats still over 1000$ extra free and clear per year. It may not seem like much, but it adds up. I understand ROI's have been pushed alot further out for most people. If you can stick with it, I would highly recommend you do so :). You never know what the next 12-18 months could bring.
Click to expand...

You're assuming no rise in difficulty. The difficulty has doubled since March 1st. At one point it had hit 150% during the Ghash.io promotion.
 
i gave up on the pool mining a bit ago for bigger returns in the solo world. Though it's been luck, i have been getting around $30 or so a day in profit. Electricity cost is $.07 /h. Looking at removing the bigger cards for more 750ti's. The first (and only one thus far) has been rock solid at 300kh/s. Frankly i love these cards. the 280x's i have will the be the last in the pile to go before getting the 750's to replace em. Second order for next card will be placed today.
 
Anyone try mining with a 750 non TI. Same core just 512 cuda cores vs 640 to the TI.
 
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