I'm still looking at getting one of those Coolermaster 1250w psus, But It and the other PC and/or X58 parts are somewhere down the rail lines for the moment.

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

A question . . .

Is it safe to plug into two different power circuits in the house or office when using multiple power supplies in the same computer?

I thought there might be a problem if the two circuits were on different halves of the split 240V feeding the house?

Bob

---

Opinion stated as fact? Who, me?

Wow, 900W power consumption...

I wonder how much heat and noise that machine is generating.

Lots of each! That's the bad news.

The good news is, re. watts per credit, it is one of the more efficient computers running on SETI@home, I think.

Bob

I beg to differ. I am selling a Shuttle XPC that got about 600-800 RAC and only used 170W for the ENTIRE system (at full load). :)

A question . . .

Is it safe to plug into two different power circuits in the house or office when using multiple power supplies in the same computer?

I thought there might be a problem if the two circuits were on different halves of the split 240V feeding the house?

Bob

I have two 20A circuits, But I've never done what Yer describing. One is for the PC equipment and the other is for the swamp cooler and both outlets would/should be moved closer to the PCs, But considering I'm looking at a bigger house and I'm wanting to get a mortgage(as I'm halfway between really renting and and not renting at all), So that's on hold as It's not something worth doing right now.

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

A question . . .

Is it safe to plug into two different power circuits in the house or office when using multiple power supplies in the same computer?

I thought there might be a problem if the two circuits were on different halves of the split 240V feeding the house?

Bob

I have two 20A circuits, But I've never done what Yer describing. One is for the PC equipment and the other is for the swamp cooler and both outlets would/should be moved closer to the PCs, But considering I'm looking at a bigger house and I'm wanting to get a mortgage(as I'm halfway between really renting and and not renting at all), So that's on hold as It's not something worth doing right now.

Yeah, I finally got over my "drilling holes in the house" phobia and got rid of the extension cord running from the living room to my small office. That worked out so well, I drilled more holes and ran CAT5 to a few more rooms.

15 years ago a "house of the future" was wired with CAT5 and cable going to every room, all ending in a neat junction box in the basement. I thought it was overkill. It all makes sense now!

Heck, in 1992 an acquaintance asked me what I thought of the new Information Super Highway thingy. I said it was a flash in the pan, ignore it. He made a career decision based on that statement. Wow, was he mad at me in 1998!

Bob

---

Opinion stated as fact? Who, me?

Wow, 900W power consumption...

I wonder how much heat and noise that machine is generating.

Lots of each! That's the bad news.

The good news is, re. watts per credit, it is one of the more efficient computers running on SETI@home, I think.

Bob

I beg to differ. I am selling a Shuttle XPC that got about 600-800 RAC and only used 170W for the ENTIRE system (at full load). :)

Bob's 27,886.45 RAC is all from that one system drawing a measured 970 watts. That's about 0.0348 watts/credit insofar as that terminology makes any sense. Your Shuttle XPC at 800 RAC was using 0.2125 watts/credit.

A better statement is that Bob's system uses about 23.28 kwh daily for 27886 credits, so a ratio of 1197.9 credits/kwh. The Shuttle XPC would have been 4.08 kwh daily for 800 credits, so a ratio of 196.1 credits/kwh.

Bob's host is over 6 times more efficient no matter which way the efficiency is stated.

[Edit for actual 970 watt value.]

                                                                Joe

Wow, 900W power consumption...

I wonder how much heat and noise that machine is generating.

Lots of each! That's the bad news.

The good news is, re. watts per credit, it is one of the more efficient computers running on SETI@home, I think.

Bob

I beg to differ. I am selling a Shuttle XPC that got about 600-800 RAC and only used 170W for the ENTIRE system (at full load). :)

Bob's 27,886.45 RAC is all from that one system drawing a measured 970 watts. That's about 0.0348 watts/credit insofar as that terminology makes any sense. Your Shuttle XPC at 800 RAC was using 0.2125 watts/credit.

A better statement is that Bob's system uses about 23.28 kwh daily for 27886 credits, so a ratio of 1197.9 credits/kwh. The Shuttle XPC would have been 4.08 kwh daily for 800 credits, so a ratio of 196.1 credits/kwh.

Bob's host is over 6 times more efficient no matter which way the efficiency is stated.

[Edit for actual 970 watt value.]

                                                                Joe

Joe,
Sorry about the big quote, but it all applies, I guess. I've been playing with S@H power draw for about a year. Each of these systems was optimized for power draw with maximum WU processing speed. I'll give 3 data points from real tests:
-------------------
Computer #1: Shuttle SX48P2E, Q9650 Quad (not QX), slight overclock to 3.2GHz, 10-watt video card. Running MB on CPU opti apps.

Computer #2: QX9770 Quad, no CUDA, OC to 4.2GHz, 10-watt video card. Running MB on CPU opti apps.

Computer #3: 'Sarge1' computer. QX9770 Quad OC to 4.0GHz, 3xGTX295 (6x individual GPU). Running 1xAPV5 on 1 core of CPU, 6xMB CUDA.
--------------------

Computer #1, the Shuttle, is my wattage reference system. It scored at or near the top of efficiency compared to systems competing in the "Wattage" thread last year. I suggest it be used as an idealized non-CUDA reference point. I might pull the Shuttle out of storage and re-test it with the new optimized Astropulse. It would probably do much better in the RAC.)

Wattage chart:

Computer#/name........RAC.............Watts
#1/Shuttle................6,500RAC......155W
#2/QX (MB, no CUDA)..8,500RAC......280W
#3/Sarge1................44,000RAC*....940W

(* RAC justification . . . Sarge1 achieved 41,527RAC on 3-26-2009, was still climbing. Since then power draw and noise have been reduced, plus one CPU core has been dedicated to APV5, adding 4,000RAC. This is the most efficient this computer can be with today's software and WU mix. The system runs without intervention from me, it is done and buttoned up, and it hasn't burned the house down! Yay!)

I don't want to pull a user 67415 (thanks for the reference, Haselgrove) with my 44,000RAC estimate, but I'm just a misguided fanatic with messed up priorities working with numbers in my crazy-man lab, OK?

I hope this helps for your calculations!

Bob

---

Opinion stated as fact? Who, me?

Lots of reading through this entire post and I have yet to see any mention, as far a I could tell, of using a DUAL power supply capable case. I works for me! I have 2 x 1000W Silverstone Olympia 1000 PSUs each on a different branch circuit.

One supplies the MB, half my RAID array ( 4 raptors ) and the water cooling, the other one does my video card ( only 1 at the moment ) and the other 4 raptors in the RAID.

It's overkill for sure but I won't have any troubles down the road either if ( when ) I build the next "toy".

Lots of reading through this entire post and I have yet to see any mention, as far a I could tell, of using a DUAL power supply capable case. I works for me! I have 2 x 1000W Silverstone Olympia 1000 PSUs each on a different branch circuit.

One supplies the MB, half my RAID array ( 4 raptors ) and the water cooling, the other one does my video card ( only 1 at the moment ) and the other 4 raptors in the RAID.

It's overkill for sure but I won't have any troubles down the road either if ( when ) I build the next "toy".

Was it difficult to get it all working, like making the second power supply turn on automatically?

By the way, I don't think anyone mentioned this liquid solution.

---

Opinion stated as fact? Who, me?

I just got My BFG GTX 295 from FedEx(Why do they always deliver to the Back Door? UPS always goes to the Front Door, always.), It looks Good too, Tomorrow after breakfast I'll have to get out the Coolermaster HAF 932 case and start the transplant surgery, Thankfully for just one GTX 295 My OCZ 850w psu is good enough, But two would require a bigger psu and well 3 would require a motherboard change along with a psu and then It would be an X58(a P6T[not the Deluxe] or a GA-EX58-UD4P, I'm leaning towards the GA-EX58-UD4P currently as I like the slot arrangement) and of course 6GB of ram and an i7 920 D0 cpu. For cooling It would have to be the IFX-14 from Thermalright w/the 1366 adapter of Thermalrights of course. :D

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

Lots of reading through this entire post and I have yet to see any mention, as far a I could tell, of using a DUAL power supply capable case. I works for me! I have 2 x 1000W Silverstone Olympia 1000 PSUs each on a different branch circuit.

One supplies the MB, half my RAID array ( 4 raptors ) and the water cooling, the other one does my video card ( only 1 at the moment ) and the other 4 raptors in the RAID.

It's overkill for sure but I won't have any troubles down the road either if ( when ) I build the next "toy".

Are you using the Antec P190+1200 case?

---

Clk2HlpSetiCty:::PayIt4ward

I just got My BFG GTX 295 from FedEx(Why do they always deliver to the Back Door? UPS always goes to the Front Door, always.), It looks Good too, Tomorrow after breakfast I'll have to get out the Coolermaster HAF 932 case and start the transplant surgery, Thankfully for just one GTX 295 My OCZ 850w psu is good enough, But two would require a bigger psu and well 3 would require a motherboard change along with a psu and then It would be an X58(a P6T[not the Deluxe] or a GA-EX58-UD4P, I'm leaning towards the GA-EX58-UD4P currently as I like the slot arrangement) and of course 6GB of ram and an i7 920 D0 cpu. For cooling It would have to be the IFX-14 from Thermalright w/the 1366 adapter of Thermalrights of course. :D

Hey SuperJoker,
It sounds like you have a very early xmas on your hands!

I transplanted to the Coolermaster HAF932 after grabbing the last one off the shelf at the local CompuUSA. Wow, it is a nice case.

When you get yours working, can you tell me if the giant side fan is blowing air in or out? Mine came blowing air into the case. I recently swapped it around so it blows air out, but haven't seen any temperature differences on the GPU.

Lookout for that top fan - I almost broke it a couple times when moving the open case.

That 850W sounds perfect for your setup. Re. those motherboards you mentioned - you are right, the Gigabyte does look like a better slot layout. Why don't more manufacturers stagger the PCI-E slots? They could triple-space one of them.

Bob

---

Opinion stated as fact? Who, me?

I just got My BFG GTX 295 from FedEx(Why do they always deliver to the Back Door? UPS always goes to the Front Door, always.), It looks Good too, Tomorrow after breakfast I'll have to get out the Coolermaster HAF 932 case and start the transplant surgery, Thankfully for just one GTX 295 My OCZ 850w psu is good enough, But two would require a bigger psu and well 3 would require a motherboard change along with a psu and then It would be an X58(a P6T[not the Deluxe] or a GA-EX58-UD4P, I'm leaning towards the GA-EX58-UD4P currently as I like the slot arrangement) and of course 6GB of ram and an i7 920 D0 cpu. For cooling It would have to be the IFX-14 from Thermalright w/the 1366 adapter of Thermalrights of course. :D

Hey SuperJoker,
It sounds like you have a very early Xmas on your hands!

I transplanted to the Coolermaster HAF932 after grabbing the last one off the shelf at the local CompuUSA. Wow, it is a nice case.

When you get yours working, can you tell me if the giant side fan is blowing air in or out? Mine came blowing air into the case. I recently swapped it around so it blows air out, but haven't seen any temperature differences on the GPU.

Lookout for that top fan - I almost broke it a couple times when moving the open case.

That 850W sounds perfect for your setup. Re. those motherboards you mentioned - you are right, the Gigabyte does look like a better slot layout. Why don't more manufacturers stagger the PCI-E slots? They could triple-space one of them.

Bob

Some of It I suppose is for aesthetics and the rest electrical, Also there's the ATX form factor to consider as You'd either have less slots or a bigger motherboard(wider-from the bottom to top of a case). Mine came from ebay a few months back and let Me tell You this case isn't nearly as heavy as the old Chieftec Matrix case It's replacing and that's with both empty too. Yeah the 850w psu is an OCZ model that I bought a while back, The things pretty solid as is the 900w OCZ for My other PC(offline, no ram yet) Being the card is going into a P5K Deluxe It's going into the only 16x slot on the board, I'm used to moving cases, I'd moved It already from the box in the front room to the Kitchen countertop and no breakage(I didn't touch the fan as I had the case closed up still). As to the door fan I don't know Yet, I'll have to get back to You on that as It might have to come out as I have a tower style cpu heatsink on the Q9300 cpu.

---

The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

I just got My BFG GTX 295 from FedEx(Why do they always deliver to the Back Door? UPS always goes to the Front Door, always.), It looks Good too, Tomorrow after breakfast I'll have to get out the Coolermaster HAF 932 case and start the transplant surgery, Thankfully for just one GTX 295 My OCZ 850w psu is good enough, But two would require a bigger psu and well 3 would require a motherboard change along with a psu and then It would be an X58(a P6T[not the Deluxe] or a GA-EX58-UD4P, I'm leaning towards the GA-EX58-UD4P currently as I like the slot arrangement) and of course 6GB of ram and an i7 920 D0 cpu. For cooling It would have to be the IFX-14 from Thermalright w/the 1366 adapter of Thermalrights of course. :D

Hey SuperJoker,
It sounds like you have a very early xmas on your hands!

I transplanted to the Coolermaster HAF932 after grabbing the last one off the shelf at the local CompuUSA. Wow, it is a nice case.

When you get yours working, can you tell me if the giant side fan is blowing air in or out? Mine came blowing air into the case. I recently swapped it around so it blows air out, but haven't seen any temperature differences on the GPU.

Lookout for that top fan - I almost broke it a couple times when moving the open case.

That 850W sounds perfect for your setup. Re. those motherboards you mentioned - you are right, the Gigabyte does look like a better slot layout. Why don't more manufacturers stagger the PCI-E slots? They could triple-space one of them.

Bob

Ok as I said over in the following thread Here It took Me 5 hours to do the Transplant and It works and I'm beat. And yeah It's mostly quieter now, I can even hear the Raptor walking from time to time. :D

---

The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

I managed to set the fan on the GTX295 to 100% using Riva Tuner 2.24, Some which I found out about at the following two links:
http://www.mvktech.net/component/option,com_joomlaboard/Itemid,34/func,view/id,42914/catid,10/
http://www.overclock.net/nvidia/423880-howto-prevent-gtx-200-series-downclocking.html
The 2nd one is very important as is the fan setting, 41% for the fan resulted in Compute Errors when running two instances of MB_6.08_mod_CUDA_V10.exe instead of just one, so far so good, It's a little noisier now, But the card is cooler.

Oh to get to the Fan tab, Look to the right of where It says ForceWare detected and click on the Triangle next to the word Customize and then click on what looks like a video card and then the first tab will say Overclocking. Also You will want to save the Fan settings so that they'll come up on a reboot.

---

The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

I just got My BFG GTX 295 from FedEx(Why do they always deliver to the Back Door? UPS always goes to the Front Door, always.), It looks Good too, Tomorrow after breakfast I'll have to get out the Coolermaster HAF 932 case and start the transplant surgery, Thankfully for just one GTX 295 My OCZ 850w psu is good enough, But two would require a bigger psu and well 3 would require a motherboard change along with a psu and then It would be an X58(a P6T[not the Deluxe] or a GA-EX58-UD4P, I'm leaning towards the GA-EX58-UD4P currently as I like the slot arrangement) and of course 6GB of ram and an i7 920 D0 cpu. For cooling It would have to be the IFX-14 from Thermalright w/the 1366 adapter of Thermalrights of course. :D

Hey SuperJoker,
It sounds like you have a very early Xmas on your hands!

I transplanted to the Coolermaster HAF932 after grabbing the last one off the shelf at the local CompuUSA. Wow, it is a nice case.

When you get yours working, can you tell me if the giant side fan is blowing air in or out? Mine came blowing air into the case. I recently swapped it around so it blows air out, but haven't seen any temperature differences on the GPU.

Lookout for that top fan - I almost broke it a couple times when moving the open case.

That 850W sounds perfect for your setup. Re. those motherboards you mentioned - you are right, the Gigabyte does look like a better slot layout. Why don't more manufacturers stagger the PCI-E slots? They could triple-space one of them.

Bob

Well the 850w psu is good enough, Barely, As I had to use two of three power adapters that were included as I had no 8pin pci-e video card support from the 850w psu, just two 6pin pci-e video card cables, the 1st of the two adapters made the two 6's into an 8pin, next the the 2nd adapter made one molex cable(4pin) into a dedicated 6pin pci-e cable and the 850w psu didn't need to use the 8pin motherboard extender cable as the psu has enough reach and It works with the HAF 932, Dang that's a good case and that GTX295 is keeping My cpu cooler as a side effect of crunching for Seti. :)

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

Ok I've made a thread on the subject of Choosing an Optimum X58 motherboard for 3 GTX 295 Cards. Power is one thing, But one needs a motherboard that supports three dual width video cards.

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's

Hi,

To get the correct PSU for you computer I'd advise using a power calculator like this one. http://www.thermaltake.outervision.com/

Its actually the Amps that are important than the watts but its easier to work with Watts as most Manufacturers do quote their product power rating in Watts.

I to build my own computers as Manufacturers give you the least for the most money i.e. profit.

The Ancient One.

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"All man born has a right to life and no man born has the right to take that life"

The PC I've just built uses 1500 watt PSU and is quieter than my other one which runs a 650 Watt PSU. The noise level depends on how much you spend on it.

Running two PSU's from different mains power is safe but you have to remember to switch off BOTH PSU's before you work on your PC.

---

"All man born has a right to life and no man born has the right to take that life"

Now the Question is with motherboards from ASRock and eventually from MSI and possibly others supporting 4 pci-e slots that could support 4 GTX295 cards, Is there a psu that can power and therefore has the needed 6 and 8 pin pci-e connectors multiplied by 4? 3 can be found, But so far 4 is not to be seen.

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The T1 Trust, PRR T1 Class 4-4-4-4 #5550, 1 of America's First HST's