I have an Asus P6T SE with 3 x PCIe 2.0 x16 (at x16/x16/x4 mode)
Will it make any difference which card is in which slot as far as seti speed goes? Does the slowest card need to be in slot 3?

You lucky beggar!

Not 100% sure, but I think I would put the slowest card in the slowest slot, because the x4 slot has lower bandwidth available. Maybe somebody else can verify this? You might want to keep an eye on the power draw as well, seeing as you have 3 video cards in a machine with only a 750w PSU too. That must be close or over 750w with 3 video cards at full tilt.

regards, Gizbar.

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A proud GPU User Server Donor!

I have an Asus P6T SE with 3 x PCIe 2.0 x16 (at x16/x16/x4 mode)
Will it make any difference which card is in which slot as far as seti speed goes? Does the slowest card need to be in slot 3?

You lucky beggar!

Not 100% sure, but I think I would put the slowest card in the slowest slot, because the x4 slot has lower bandwidth available. Maybe somebody else can verify this? You might want to keep an eye on the power draw as well, seeing as you have 3 video cards in a machine with only a 750w PSU too. That must be close or over 750w with 3 video cards at full tilt.

regards, Gizbar.

Everyone who goes upon the Cuda path should own a [url=http://www.newegg.com/Product/Product.aspx?Item=N82E16882715001&Tpk=kill a watt] Killawatt.[/url]

I really think some of the Cuda problems that do not seem to have an answer really do......overdrawing the PSU.

These are not expensive, and will tell you exactly how much power your PSU is drawing from the mains and how close you are to it's limits.

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"Freedom is just Chaos, with better lighting." Alan Dean Foster

I have an Asus P6T SE with 3 x PCIe 2.0 x16 (at x16/x16/x4 mode)
Will it make any difference which card is in which slot as far as seti speed goes? Does the slowest card need to be in slot 3?

You lucky beggar!

Not 100% sure, but I think I would put the slowest card in the slowest slot, because the x4 slot has lower bandwidth available. Maybe somebody else can verify this? You might want to keep an eye on the power draw as well, seeing as you have 3 video cards in a machine with only a 750w PSU too. That must be close or over 750w with 3 video cards at full tilt.

regards, Gizbar.

Everyone who goes upon the Cuda path should own a [url=http://www.newegg.com/Product/Product.aspx?Item=N82E16882715001&Tpk=kill a watt] Killawatt.[/url]

I really think some of the Cuda problems that do not seem to have an answer really do......overdrawing the PSU.

These are not expensive, and will tell you exactly how much power your PSU is drawing from the mains and how close you are to it's limits.

Ooh. Thanks for reminding me. I can't buy Killawatts over here. Will have to go down to DSE tomorrow in search of something similar instead.

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- Luke.

Do you have Jaycar?
Mains power meter.


EDIT- found one from Tricky Dicky in NZ.

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Grant
Darwin NT

Do you have Jaycar?
Mains power meter.


EDIT- found one from Tricky Dicky in NZ.

I have an Amp probe, will have to see what it draws. Does anyone know about the PCIE slots and if the fastest card needs to be in slot 1 and slowest in slot 3? I want to set it up with the 9600GSO in slot 1 as it would look like the fastest 9600 in the stats page.

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Official Abuser of Boinc Buttons...
And no good credit hound!

Do you have Jaycar?
Mains power meter.


EDIT- found one from Tricky Dicky in NZ.

I have an Amp probe, will have to see what it draws. Does anyone know about the PCIE slots and if the fastest card needs to be in slot 1 and slowest in slot 3? I want to set it up with the 9600GSO in slot 1 as it would look like the fastest 9600 in the stats page.

You may be disappointed. I saw the post that gave you the inspiration for that aspiration, but I've forgotten who posted it: can't give you a reliability estimate.

This is BOINC code (coproc.cpp) from about a year ago:

175     // NOTE: our design is slightly flawed: 
176     // there's no provision for having two coprocs of type CUDA. 
177     // So on systems with two GPUs of different hardware types 
178     // we have to count them as two of the same type. 
179     // Pick the fastest. 

Note the last line. Although this code is long superseded, and the BOINC client can now cope with multiple disparate cards, I suspect something similar may still be used to generate the summary you see on the host and statistics pages. If they do indeed show "best", not "first", it would be better to put the fastest card in your new build into the slot with the fastest transfer rate, and forget about trying to game the stats.

Well then I guess I will put the 260 in slot 1 and the 275 in slot 2 as both slots are x16 and at least that would give people a closer value than showing it as 3 275's which it certainly won't be.

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Official Abuser of Boinc Buttons...
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I have an Asus P6T SE with 3 x PCIe 2.0 x16 (at x16/x16/x4 mode)
Will it make any difference which card is in which slot as far as seti speed goes? Does the slowest card need to be in slot 3?

You lucky beggar!

Not 100% sure, but I think I would put the slowest card in the slowest slot, because the x4 slot has lower bandwidth available. Maybe somebody else can verify this? You might want to keep an eye on the power draw as well, seeing as you have 3 video cards in a machine with only a 750w PSU too. That must be close or over 750w with 3 video cards at full tilt.

regards, Gizbar.

Well I put my amp probe on it and at 115 volts I am almost drawing 3.5 amps so right now I use about 402.5 Watts. Not sure how many watts a GTS 275 is but as long as it isn't over 200 I should be fine.

EDIT:This is the only heat source also.

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Official Abuser of Boinc Buttons...
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Well I put my amp probe on it and at 115 volts I am almost drawing 3.5 amps so right now I use about 402.5 Watts. Not sure how many watts a GTS 275 is but as long as it isn't over 200 I should be fine.

EDIT:This is the only heat source also.

One thing to keep in mind- the power drawn from the mains will be greater than the load on the PSU, due to it's less than perfect efficiency.

My maths isn't what it used to be (and it wasn't very good even then), but a rough estimate-
A 500W load on the PSU, if it's 80% efficient, will result in a 600W load at the power point.
So if your PSU is 80% efficient, the present load on the secondary should be around 335W.

(BTW- someone might want to check those munbers).

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Grant
Darwin NT

May have to move the 9600GSO to another machine. Bummer...

"The MSI ENGTX275 pulled 39 (117-78) watts at idle and 275 (353-78) watts when running full out"

From a review site.

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Official Abuser of Boinc Buttons...
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Been kind of eyeballing this...$99 after rebate.

XION Power Real XON-1100P14HE 1100W ATX 12V v2.2 / EPS 12V v2.91 / SSI 2.92 SLI Ready CrossFire Ready Power Supply - Retail
Fans: 140mm Silent Blue LED Cooling Fan
Main Connector: 20+4Pin
+12V Rails: 6
PCI-Express Connector: 2 x 6-Pin, 2 x 6+2-Pin
SATA Power Connector: 8
Power Good Signal: 100-500ms
Hold-up Time: 16ms min.
Efficiency: Up to 85 %
Model #: XON-1100P14HE
Item #: N82E16817190025
Return Policy: Standard Return Policy

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Official Abuser of Boinc Buttons...
And no good credit hound!

Well I added my new GTX 275 but took the 9600GSO out. With my true RMS amp probe it now says I am drawing 500 watts. I think I will watch temps for a bit and maybe tonight stick the 9600GSO in and see where it is at. Seems each set of leads is on it's own rail so I bet it works with my Corsair 750Watt PS.

EDIT: 12/9/2009 1:53:28 PM NVIDIA GPU 0: GeForce GTX 275 (driver version 19562, CUDA version 3000, compute capability 1.3, 896MB, 708 GFLOPS peak)
12/9/2009 1:53:28 PM NVIDIA GPU 1: GeForce GTX 260 (driver version 19562, CUDA version 3000, compute capability 1.3, 896MB, 537 GFLOPS peak)

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I googled my motherboard and found a review site that was overclocking my board, So I decided to give it a try. Just a simple mild overclock I am at 3200 on my i7 320 and my H50 is sitting pretty at 51C. They took the BCLK to 175 so far I have tried 160 and all is well in fact better than I expected.

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Official Abuser of Boinc Buttons...
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Brought it up to 3400 and the CPU is between 55C and 57C, the motherboard temp has gone up to 55C so I put a small house fan next to the case and it went down to 51C. Not sure how much the MB can take with these new i7 chipsets. Seems my 775 socket would get warnings around 46C...

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Official Abuser of Boinc Buttons...
And no good credit hound!

Brought it up to 3400 and the CPU is between 55C and 57C, the motherboard temp has gone up to 55C so I put a small house fan next to the case and it went down to 51C. Not sure how much the MB can take with these new i7 chipsets. Seems my 775 socket would get warnings around 46C...

I've heard of 1156 motherboards going to anywhere between 3.8GHz and 4.3GHz, Oh and as to 775, My 775 the P5K Deluxe and the QX6700 B1(ES) go at 3.52GHz on air, Of course the core temps range from 65-83C, But I'll solve that in January with a Corsair H50 cooler and It's only the 1st of 3 H50 coolers, The QX6700 is using an 8 multiplier, Which I can raise to 9 with water cooling and dust filters, the 2nd won't be bought for pc3 until August as that's as soon as My funds will permit.

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

Brought it up to 3400 and the CPU is between 55C and 57C, the motherboard temp has gone up to 55C so I put a small house fan next to the case and it went down to 51C. Not sure how much the MB can take with these new i7 chipsets. Seems my 775 socket would get warnings around 46C...

I've heard of 1156 motherboards going to anywhere between 3.8GHz and 4.3GHz, Oh and as to 775, My 775 the P5K Deluxe and the QX6700 B1(ES) go at 3.52GHz on air, Of course the core temps range from 65-83C, But I'll solve that in January with a Corsair H50 cooler and It's only the 1st of 3 H50 coolers, The QX6700 is using an 8 multiplier, Which I can raise to 9 with water cooling and dust filters, the 2nd won't be bought for pc3 until August as that's as soon as My funds will permit.

I'm not brave enough at present. Do want to look into overclocking my 2 video cards, know a good program that is easy?

EDIT, I brought it up to 3500 which was where the review went to. Now my CPU is 54C and MB is 46C, nice little water cooler.

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Official Abuser of Boinc Buttons...
And no good credit hound!

Brought it up to 3400 and the CPU is between 55C and 57C, the motherboard temp has gone up to 55C so I put a small house fan next to the case and it went down to 51C. Not sure how much the MB can take with these new i7 chipsets. Seems my 775 socket would get warnings around 46C...

I've heard of 1156 motherboards going to anywhere between 3.8GHz and 4.3GHz, Oh and as to 775, My 775 the P5K Deluxe and the QX6700 B1(ES) go at 3.52GHz on air, Of course the core temps range from 65-83C, But I'll solve that in January with a Corsair H50 cooler and It's only the 1st of 3 H50 coolers, The QX6700 is using an 8 multiplier, Which I can raise to 9 with water cooling and dust filters, the 2nd won't be bought for pc3 until August as that's as soon as My funds will permit.

I'm not brave enough at present. Do want to look into overclocking my 2 video cards, know a good program that is easy?

EDIT, I brought it up to 3500 which was where the review went to. Now my CPU is 54C and MB is 46C, nice little water cooler.

I'd try RivaTuner. If used It to maintain the fan speed on My GTX295 and It has tools for overclocking built in too, Oh and did I say It's FREE? :D

Now Yer cooking with Gas, Of course You can go a bit farther maybe, You may need to read a few reviews about Your motherboard to see what they did and see How close You can get to that.

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

Got it up to 4.0 Mhz for an hour before it restarted on its own. Was able to run the performance test from the other thread and seti and CPU temp only got to 62C, I think I may just need a bit more voltage now. On the restart didn't get the overclock fail message and it seemed like it was going to start right back up. I stopped it and set it at 3.8 and it is humming along great. After more than an hour my CPU is 52C and Motherboard is 47C. Don't think temps are stopping me.

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Official Abuser of Boinc Buttons...
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You might want to try EVGA precision. It normally comes with an EVGA gfx card, but you can get it from here. Riva Tuner is also available here, at same url.

I didn't bother myself, because every time I've tried to overclock a gfx card, it seems to make the system less responsive when I want to do something on the computer. Even if I got it seemingly completely stable. In the end, I just figured it wasn't worth it. YMMV.

regards, Gizbar.

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A proud GPU User Server Donor!

You might want to try EVGA precision. It normally comes with an EVGA gfx card, but you can get it from here. Riva Tuner is also available here, at same url.

I didn't bother myself, because every time I've tried to overclock a gfx card, it seems to make the system less responsive when I want to do something on the computer. Even if I got it seemingly completely stable. In the end, I just figured it wasn't worth it. YMMV.

regards, Gizbar.

Yeah I agree, Overclock Yer cpu if You can, But the gpu? Forget It, The results just don't seem to be worth It.

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