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post #11 of 27
Quote:
Originally Posted by PR-Imagery;15533702 
Barebones new rig would run me around $1200 processor/board/psu/4gb/cooler
Wow, you have the tech, but it's absurdly priced. And i thought not having it locally was bad eek.gif
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post #12 of 27
If you dont game on that computer or need Windows I would save the money and switch over to Ubuntu 10.10. The PPD increase from running hugeadv will be alot more than adding 2 gpus to your system. That way you dont spend any money and get more PPD.
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post #13 of 27
With a decent overclock I can get around 9k-10k from my 450 and I get 14k-15k from my 570 so I'd say the two 450s are the way to go.
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post #14 of 27
Thread Starter 
Quote:
Originally Posted by cyanmcleod;15533601 
remember that folding on the gpu hurts the cpu PPD. i gave up on gpu folding because of it and went with sandy bridge because of the PPW it gives.

Right now with my 5750, I've found a decent balance between the gpu and smp clients, but on this card it isn't really worth it. Was something I thought about tho, considering 2 cards would have a bigger impact.
Quote:
Originally Posted by kill;15533603 
the 570 will most likely be better.
Quote:
Originally Posted by giganews35;15533607 
Two GPUs will take away more points from the CPU I believe. PPD wise 2 450s = 570. But I think the 450's will still use less power.

Noted
Quote:
Originally Posted by Starbomba;15533665 
My two GTS 450's generate around 16k PPD when OC'd, for comparison.

OC'd to what and what sort of power draw are you looking at with the higher clocks? If the power consumption is less than the 570, that might balance things out.
Quote:
Originally Posted by Starbomba;15533736 
Wow, you have the tech, but it's absurdly priced. And i thought not having it locally was bad eek.gif

Tell me about it. My sig rig was close to $3000 minus the displays and gfx, and this is the cheapest place to buy locally, but I did get a frequent customer discount on my 2600k, $100 off the full $500+, guess thats a win.
 
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post #15 of 27
PPW 2600k is the best. I'd say to just go with a single 570 if one GPU, reason, more space for expansion and it should hold value better.

Can't import from USA? Your right next door.
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post #16 of 27
Quote:
Originally Posted by PR-Imagery;15533997 
OC'd to what and what sort of power draw are you looking at with the higher clocks? If the power consumption is less than the 570, that might balance things out.
My GTS 450's are OC'd to 900c/1800s/1950m @ 1.100v, which is roughly a 15% OC in speeds with a 5-7% overvolt over the stock voltage. My whole system can be powered with a 500w PSU with full OC's and at full BOINC/F@H load without issues, so i'd say those two draw roughly 250-270w, but have not really tested that.

FahMon reports to me i get different PPD per WU on each card, for you to get an idea of the PPD to expect from a mediocre OC (i'm temp limited since my cards are single slot and heat a lot more) i'll list the benchmarks:

6800: Avg. Time / Frame : 3mn 15s - 5751.14 ppd
6801: Avg. Time / Frame : 3mn 24s - 5709.18 ppd
6802: Avg. Time / Frame : 4mn 15s - 4489.41 ppd
6803: Avg. Time / Frame : 4mn 15s - 4489.41 ppd
6804: Avg. Time / Frame : 4mn 15s - 4489.41 ppd

All of them average to 4985.71 ppd per card on an avg time/frame of roughly 3mn 40s or so.

A 570 might be lower, but still close in power draw, even OC'd, but i doubt it can make almost 20k ppd, which you could get with a higher OC on the 450's (and i was able to go to 960c/1920s/2050m @ 1.140v on one of my cards).

I found the stock power consumption of GTS 450 and a GTX 570 (i even found one that shows 450's in SLI and factory OC'd GTS 450's which OC's are higher than mines, but the power graphs take into account the whole test computer so numbers will be higher)
Edited by Starbomba - 11/1/11 at 3:58pm
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post #17 of 27
Hey Starbomba something is up with those 450s because mine is pulling 2m16s TPF at 8200PPD on 893 core, 1786 shader @ 1.01V on the 6800 project right now.
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post #18 of 27
Thread Starter 
Quote:
Originally Posted by Desert Rat;15533919 
If you dont game on that computer or need Windows I would save the money and switch over to Ubuntu 10.10. The PPD increase from running hugeadv will be alot more than adding 2 gpus to your system. That way you dont spend any money and get more PPD.

Ubuntu isn't really an option atm.
 
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post #19 of 27
Quote:
Originally Posted by Renegadesl1;15536556 
Hey Starbomba something is up with those 450s because mine is pulling 2m16s TPF at 8200PPD on 893 core, 1786 shader @ 1.01V on the 6800 project right now.
Interesting. But what client are you running? I've heard using v7 changes PPD in a way. I'm riding version 6.41r2.

Here's a screenshot of my FahMon, with the last wu i ran, gpu speeds, temps (on the bottom right corner, green is GPU1 and red is GPU2). GPU 1 ppd is different but it's because i unsync them and GPU1 runs at like 800/1600 w/0.975v (as you can see the card gets toasty, and gets hotter with F@H than it does with BOINC).

If i'm doing something wrong, like a setting or anything, tell me. Even tho i fold, i do not know as much as BOINC, i just followed the guide to the letter, and dedicate one month to F@H and other to BOINC.
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post #20 of 27
i would get 3 x used GTS 450's and call it a day
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