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1) Message boards : Number crunching : 2x550 vs 1x570? (Message 35783)
Posted 3187 days ago by orca
I appreciate your response.

I did suggest the 3x570s should get you more credit. the question was: do they provide that much more credit to justify the choice? I say no, but that is partially bent on 570s at load requiring 330w. you are you running 3 x 570 at 650w? how? I wonder about the 580s that require 500w? I have not seen anything like that..more like 363w at load, i.e., 330w/570 vs 363w/580. that is not that big of difference. if you consider that a big reason, then 990w vs 726w should get your attention as well. of course, our numbers are off so the impact fades.

as in, in US the cheapest 570 I see goes for 346; the cheapest 580 is 489. my math, here--in this market, suggests 3x570s is more expensive, not much. I have been bitten before by market differences, so I think we just consider that one even cost.

and to up the context as usually these cards go to gamers: I think most gamers should prefer the less crowded 2x580: less heat fewer watts similar money less room taken when compared to 3x570. is 3way sli that advantageous from a gaming perspective? That is another contentious issue. the 580 is supposedly better with the higher resolutions depending on your monitor layout.

you get more credit, yes, no question, but that ~20% kind of stings from my perspective. for the record, I plan to get a 2nd 580. I never buy two initially; I like to see how the card is and go from there. so far I like it, so I am not just poking at your impressive array of gpus. I have an interest in this discussion as well, but not only as a cruncher, as a gamer.

enjoy your 570s, clearly, from your numbers you made the better choice.

2) Message boards : Number crunching : 2x550 vs 1x570? (Message 35567)
Posted 3192 days ago by orca
All my PCs with 560 Ti cards crunch 370+ per day. The 570 carded PC only went 24x7 yesterday so no real average. Price performance wise they are pretty good for what they achieve - way better than a power hungry expensive 580 imho.

I see you have 3x570s in one machine. at online pricing 3x570 is more than 2x580s, though close. however, that is 330w x 3. the 580 at load is ~363w. the only question then, in this context: how many credits do the 3 x 570s get? I don't know, I assume more than 2x580s. 2x580 should get (pps) 1.3-1.4mil. I get ~725K with one.

but, you have, at load, 990w to run those 3 cards. 726w to run 2 x 580.

when comparing single cards I agree with you, but I think it is less clear when you start stacking all those watts and prices, i.e., 3x570 vs 2x580.

and from what I have read, the 570 is right with the 580 in heat production. so you have more heat to boot with the 3 cards.

looking forward to what the 3x570s do.

3) Message boards : Number crunching : The 580 which is best ? (Message 35490)
Posted 3194 days ago by orca

I should have clarified. my apologies.

it depends on your situation. it is my impression that a factory oc'd gpu is a card with a better cooling apparatus, ie. beefier. if you are satisfied with a quality and mostly quiet air cooler, then a tad more money is worth it. if intent is to use a better than reference cooler, get whichever 580 reference you prefer. again, that is my impression of what a factory oc gets you. frankly, I have my doubts, but such is the word on several forums. otherwise, a factory oc would be a ripoff that would sour the gaming crowd for guilty vendor. for example, the black ops oc is lame from the reference 772. yet I can easily, no voltage change and comfortably noise-wise, run at 880. by the way, at default this card, and a reference slightly oc'd, will get you ~640-650K.

so, if you have slick aftermarket cooling, get your preferred reference and enjoy a darn good card. if not interested in messing with the card's casing, I can attest the black ops 580 is kickass.

by the way, I am not one of those fanboys. I have two oc'd 5870s in my other machine. I mention this so that you not thinking I am pushing nvidia over amd.

good luck.
4) Message boards : Number crunching : The 580 which is best ? (Message 35435)
Posted 3195 days ago by orca
which is best? tough question, so I add to the pile.

I agree with hammeh and decided on factory oc'd. I have the evga black ops and w/o upping the voltage run 880 with stock fan speed <70%. there is plenty left in this card, but not pushing it on stock air. just in case you are wondering, that is ~700+k for a single card. also, this card is surprisingly tame sounding at ~70% fan.

great card, and I hear evga support not bad either.

oh yeah and possibly as important, I am impressed by the gaming experience.

good luck.

EDIT: I should have mentioned that fan speed is auto as set by evga. it appears evga prefer the card kept under 90C, ~88C is my max. I have read 90C is not a problem for the card.
5) Message boards : Proth Prime Search : Heavy UI Interface Lag when PrimeGrid is running. (Message 31731)
Posted 3276 days ago by orca
I agree with killer; this lag is startling. wth?

but, I agree with the suggestions to not crunch or not while in use--not crying. those of us crunching w/ati cards have not experienced this--not like this. I have 2x5870s in my other machine and I have never seen a lag like this. mw has a lag, but numerous options to tweak.

oh well.

again, not crying so flame not, just adjusting to the nvidia side of things. I am pleased to see someone else suffering this lag as I was wondering what is wrong. no matter, the 580 was too good to pass up, so trying yaws proj.

good luck killer.

6) Message boards : Number crunching : ATI GPU workunits error (Message 29053)
Posted 3326 days ago by orca
new as well and have yet to find a thread that explains or details actions to take for primegrid amd crunching.

I get the output file absent mess as seen periodically at other projects. I cleared out the .exes and with fresh download, still same errors:

12/9/2010 9:07:06 AM PrimeGrid Starting pps_sr2sieve_4955991_0
12/9/2010 9:07:06 AM PrimeGrid Starting task pps_sr2sieve_4955991_0 using pps_sr2sieve version 135
12/9/2010 9:07:06 AM PrimeGrid Starting pps_sr2sieve_4955990_0
12/9/2010 9:07:06 AM PrimeGrid Starting task pps_sr2sieve_4955990_0 using pps_sr2sieve version 135
12/9/2010 9:07:07 AM PrimeGrid Computation for task pps_sr2sieve_4955991_0 finished
12/9/2010 9:07:07 AM PrimeGrid Output file pps_sr2sieve_4955991_0_0 for task pps_sr2sieve_4955991_0 absent
12/9/2010 9:07:07 AM PrimeGrid Computation for task pps_sr2sieve_4955990_0 finished
12/9/2010 9:07:07 AM PrimeGrid Output file pps_sr2sieve_4955990_0_0 for task pps_sr2sieve_4955990_0 absent

as you can see, these error out immediately.

research left me with suggestions but no fixes. ensure I have .net3.5 or better. checkpointing changed to 0secs and ensured plenty of drive space afforded as one thread recommended. I assume 10GB is plenty. ;)

bm 10.58.
2x5870 (not crossfired).
win7 x64

so, is the app_info required for default amd crunching? I see several on the site, but have yet to see an amd version.

links or suggestions welcome.

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