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add1ct3dd
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May 13, 2013, 05:18:05 PM |
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Because your cost calculations weighted with equipment costs and wattage results in a better earning and shorter ROI on 7950s
I'd like some numbers on that better kh/J claim. Shorter ROI doesn't mean shit if you're planning to mine in the long run. Enjoy spending an extra $100 per GPU and extra money for electricity costs to get almost no increase in hash rate (if you can even get 700Kh/s, that is). I'll mine with my 4 GPUs doing 700Kh/s each while you mine with your equally expensive 3 GPUs doing 750Kh/s each. This I have a 7970 (msi lightning) , one of the best 7970's you can get and there's bugger all i can do to get it over 650. My 7950's do 670-680 easy, and that's not even pushing them (I can get over 700 but choose not to due to extra heat/power). |
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Prelude
Legendary
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Activity: 1596
Merit: 1000
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May 13, 2013, 05:18:13 PM |
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How many MH/s are 7950s getting on SHA-256? Seems the highest I've seen is about 550MH/s, while 7970 do 700MH/s easy enough.
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aa
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May 13, 2013, 05:19:14 PM |
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How many MH/s are 7950s getting on SHA-256? Seems the highest I've seen is about 550MH/s, while 7970 do 700MH/s easy enough.
605Mh/s is easy enough. SHA coins are shit, though. |
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Prelude
Legendary
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Merit: 1000
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May 13, 2013, 05:19:50 PM |
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Because your cost calculations weighted with equipment costs and wattage results in a better earning and shorter ROI on 7950s
I'd like some numbers on that better kh/J claim. Shorter ROI doesn't mean shit if you're planning to mine in the long run. Enjoy spending an extra $100 per GPU and extra money for electricity costs to get almost no increase in hash rate (if you can even get 700Kh/s, that is). I'll mine with my 4 GPUs doing 700Kh/s each while you mine with your equally expensive 3 GPUs doing 750Kh/s each. This I have a 7970 (msi lightning) , one of the best 7970's you can get and there's bugger all i can do to get it over 650. My 7950's do 670-680 easy, and that's not even pushing them (I can get over 700 but choose not to due to extra heat/power). 2 of my 13 cards are Lightnings also, they are the worst of the bunch unfortunately. Took everything to get 700KH/s out of them. |
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Simran
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May 13, 2013, 05:21:49 PM |
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How many MH/s are 7950s getting on SHA-256? Seems the highest I've seen is about 550MH/s, while 7970 do 700MH/s easy enough.
Too get at least 600, you need to powertune to 20. |
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aa
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May 13, 2013, 05:23:03 PM |
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How many MH/s are 7950s getting on SHA-256? Seems the highest I've seen is about 550MH/s, while 7970 do 700MH/s easy enough.
Too get at least 600, you need to powertune to 20. Wrong. |
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Boxman90
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May 13, 2013, 05:46:14 PM |
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This
I have a 7970 (msi lightning) , one of the best 7970's you can get and there's bugger all i can do to get it over 650.
My 7950's do 670-680 easy, and that's not even pushing them (I can get over 700 but choose not to due to extra heat/power).
Sounds like you took the worst 7970 out there. As I said, I've got a batch of 12 Sapphire 7970's that ALL do 750 easily, most of them more. |
LTC: LKKy4eDWyVtSrQAJy7Qmmz61RaFY91D9yC BTC: 18fzdnCkuUNthCD8hM36UBGopFa9ij78gG
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Hydroponica
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Activity: 182
Merit: 100
fml
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May 13, 2013, 05:59:16 PM |
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Can some of you guys post your CGMiner settings for your 7950's? I have an xfx 7950 DD, and I can't get it past 500 KH/s...If I try to OC at all, the driver crashes  |
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Hydroponica
Full Member
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fml
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May 13, 2013, 06:01:09 PM |
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Also, any thoughts on this card for mining?
Powercolor Radeon HD 7970 925MHZ 3GB 5.5GBPS GDDR5 V3 DVI HDMI 2XMINIDP PCI-E Video Card
It's on sale at NCIX for $359.99.
I'm looking to add a card, and I'm torn between the 7970 and another 7950
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blazin8s
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May 13, 2013, 06:12:44 PM |
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I've got a batch of 12 Sapphire 7970's that ALL do 750 easily, most of them more.
What settings do you use for 750s? And 800?  Right now I'm getting 730s with 1050/1500 on my Sapphire 7970s |
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Kinetic915
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May 13, 2013, 06:32:20 PM |
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i find the power to hash ratio is higher with a 7950.
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Luckybit
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May 13, 2013, 06:59:41 PM |
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It's because people with 7950s aren't mentally challenged. 7950 hits 690Kh/s easily with way less power usage and a lot less cost per GPU.
But it also has less resale value. You're right about cost per watt and heat, 7970 was running way too hot when I got it and I have to undervolt it. |
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ymer
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May 13, 2013, 07:01:01 PM |
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It's because people with 7950s aren't mentally challenged. 7950 hits 690Kh/s easily with way less power usage and a lot less cost per GPU.
But it also has less resale value. You're right about cost per watt and heat, 7970 was running way too hot when I got it and I have to undervolt it. O really? so the % of original price on resale is higher for the 7970? |
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Hydroponica
Full Member
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Merit: 100
fml
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May 13, 2013, 07:09:15 PM |
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Can some of you guys post your CGMiner settings for your 7950's? I have an xfx 7950 DD, and I can't get it past 500 KH/s...If I try to OC at all, the driver crashes Anyone? |
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Hydroponica
Full Member
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Activity: 182
Merit: 100
fml
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May 13, 2013, 07:09:59 PM |
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Also, any thoughts on this card for mining?
Powercolor Radeon HD 7970 925MHZ 3GB 5.5GBPS GDDR5 V3 DVI HDMI 2XMINIDP PCI-E Video Card
It's on sale at NCIX for $359.99.
I'm looking to add a card, and I'm torn between the 7970 and another 7950
Anyone? |
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nookiegirl (OP)
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May 14, 2013, 07:55:54 AM |
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So... did we come to the conclusion that 7950's are better now?
If so, what exact model gives you the most kh/s?
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