Hi!

If I put this GTX 275 card in my old PC, which has only PCI Express 1.x x16 slot, does it still give me about 1 teraFLOPS of computing power? That card is developed for PCI Express 2.0 x16 slot. So, does it work slower in my computer? Does it not give me 1 TFLOPS of computing power?

Thanks!

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sorry to say, buddy, but u will not get 1 terraFLOPS anyway :-) my GTX275 OCed 702/1584/1260 give 760 giga only :-)

I'm not sure about PCIe,. what's your mobo model?

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sorry to say, buddy, but u will not get 1 terraFLOPS anyway :-) my GTX275 OCed 702/1584/1260 give 760 giga only :-)

I'm not sure about PCIe,. what's your mobo model?

Ok. :]

It is Gigabyte GA-8I955X Royal.

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So, what do you think? What RAC will I get with my Pentium D 920 CPU and Palit NE3TX275FHD94 GeForce GTX 275 on my PCI Express 1.x slot?

My Pentium D 920 usually gets RACs something like 300...500.

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PCIe 1 16x delivers plenty of speed for GPU-Grid. If you're loosing anything it's well below measurement error / accuracy (normal spread in WU times).

The GTX275 of a friend used to get ~20k RAC here, but due to the recent improvements to the client this value is going up. It has reached 24k by now and if I project speed based on 1 sample WU it would reach 34k RAC (seems a bit too high). Assuming the machine is crunching 24/7.

BTW: running a Pentium D is quite inefficient, as it's very slow for the power it consumes. Sadly your board doesn't support Core 2 CPUs. If I were you I'd stop crunching on the Pentium D to save energy cost. The GPU will more than make up for it ;)

MrS

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Scanning for our furry friends since Jan 2002

PCIe 1 16x delivers plenty of speed for GPU-Grid. If you're loosing anything it's well below measurement error / accuracy (normal spread in WU times).

The GTX275 of a friend used to get ~20k RAC here, but due to the recent improvements to the client this value is going up. It has reached 24k by now and if I project speed based on 1 sample WU it would reach 34k RAC (seems a bit too high). Assuming the machine is crunching 24/7.

BTW: running a Pentium D is quite inefficient, as it's very slow for the power it consumes. Sadly your board doesn't support Core 2 CPUs. If I were you I'd stop crunching on the Pentium D to save energy cost. The GPU will more than make up for it ;)

MrS

Great to know. Thanks!

I think I will still continue to use my Pentium D and buy that GTX 275.

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ExtraTerrestrial Apes

agree 100%. GTX275 should work fine.

The only thing - my GTX275 gives my around 40k (http://boincstats.com/stats/user_graph.php?pr=ps3grid&id=34254), but not 34k :-)

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BTW, 4870 being cheaper then GTX275 gives almost twice more FLOPS - 1360 against 760

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CTAPbIi, you have a good GTX275 and a good system to back it up with (i7).
The recent move to the 50% bonus for one day task completion, and the speed increase for using Linux with the present application, which uses most of a CPU are obviously paying off; this benefit is not seen in Windows.

I think my 4850 said 1000 Boinc GFlops when it was plugged in, but it is sitting in a pile of computer parts as it is no use here. The 4870 won’t work here either.

BTW, 4870 being cheaper then GTX275 gives almost twice more FLOPS - 1360 against 760

The 4870 has more theoretical FLOPS and achieves 100 -140k RAC, but only on MW (Collatz gets less). If that's worth more than GPU-Grid is up tp everyone to decide for themselves ;)

MrS

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Scanning for our furry friends since Jan 2002

skgiven,
Regarding Linux - there are tons of manuals on Linux installation (even in pictures). Nothing special, really ;-) It's "profitable" for the project (more and faster job done) and for users (more credits). Basically, it's

sh BOINC

and u'r done. But NP - I can make smth like our local manual, including OCing process.

If we are talking about "ideal world", it will be nice to have lower CPU usage. Again, I'm not complaining, I'm just reporting :-)

ExtraTerrestrial Apes,
OC'ed 4870 (850/900 @1.3375V) gives 112k in MW. IMO from hardware point of view ATI are more powerful. SDK AFAIK is not that great, but progressing and we can see 1st results - MW & Collatz. Hope more project will start to use the power of GPUs.

I decided to take both paths and "came alive" my previous rig :-) Astronomy was 1 of my favorite classes at school :-)

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OC'ed 4870 (850/900 @1.3375V) gives 112k in MW.

Yes, but the recently sent out longer WUs, which needed a client update for not screwing up the progress bar, grant more. For my 4870 I calculated a projected RAC of 140k with these, but currently I'm "only" getting the "normal" WUs.

MrS

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Scanning for our furry friends since Jan 2002

now Travis cancelled that WUs which were really nice in terms of credits :-) Same time but twice more credits :-)

I'm moved to 0.22 which got bug fix for progress bar. But other then that 0.20 worked just fine.

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··· Hope more project will start to use the power of GPUs.···

There is a very recent new project. It works with ATI graphic cards. You can see it here.

There is a very recent new project. It works with ATI graphic cards. You can see it here.

I can hardly understand the aim of the project...

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Don't bother trying, it's not worth the effort!

Don't bother trying, it's not worth the effort!

+1, agree :-)

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The GTX275 of a friend used to get ~20k RAC here, but due to the recent improvements to the client this value is going up. It has reached 24k by now and if I project speed based on 1 sample WU it would reach 34k RAC (seems a bit too high). Assuming the machine is crunching 24/7.

I haven't got even RAC of 10,000 yet:

Does this look normal for GTX 275? I am crunching 24/7, but I am contributing to many BOINC projects and the RAC is still rising...

I started to use GTX 275 twelve (12) days ago.

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You initially got a few errors, but after that you only had one error. So in the last 8days you completed 11 of the 12 tasks (+1 in progress). You are picking up full credit; so you are finishing the tasks in good time. Although your present RAC shows about 6 or 7K, you are actually getting about 10K per day on average. If it was running 24/7 I think it would be more like 17K, as is. I expect you are getting less because it is not running GPUGrid all the time, you may be running other GPU tasks or very heavy CPU tasks, or possibly with limited system RAM or drive space (you can check that yourself).
RAC is calculated over an extended period of time so it will take a while longer to balance out.
Your GTX275 should be able to get 30K per day at least, if your system is optimised to RUN GPUGrid tasks.

You initially got a few errors, but after that you only had one error. So in the last 8days you completed 11 of the 12 tasks (+1 in progress). You are picking up full credit; so you are finishing the tasks in good time. Although your present RAC shows about 6 or 7K, you are actually getting about 10K per day on average. If it was running 24/7 I think it would be more like 17K, as is. I expect you are getting less because it is not running GPUGrid all the time, you may be running other GPU tasks or very heavy CPU tasks, or possibly with limited system RAM or drive space (you can check that yourself).
RAC is calculated over an extended period of time so it will take a while longer to balance out.
Your GTX275 should be able to get 30K per day at least, if your system is optimised to RUN GPUGrid tasks.

Thanks. Now the RAC is over 10,000.

So, should I not run World Community Grid when running GPUGRID?

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