So... did we come to the conclusion that 7950's are better now?
If so, what exact model gives you the most kh/s?
Topic: LTC - Why are you mining with 7950 and not with 7970 (Read 8158 times)
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
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?
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?
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?
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. 
i find the power to hash ratio is higher with a 7950.
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
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
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
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
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.
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.
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.
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.
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.
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.
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.
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.
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).
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.
Lol no you get more coins a day if you have more hashing power. It's all about the kh/J. Energy is a daily spending. Coins are a daily income. The actual hardware is a one time purchase.
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.
You can't count on getting 800KH out of all 7970s... I have only seen a few people do it. Plus 7950's use 50w less power.
You can actually, if you have the right series. Just make sure any subsequent cards are the exact same ones, preferably from the same vendor.
All my sapphires (11197-03-40G) ALL do 750 @ exactly the same settings, and some golden samples do a little more. But baseline, they all hit 750.
interesting thread...
i did some math here in Romania:
7950 1300 RON (394$) Avg 600KH 2.16RON/H (0.65$/H)
7970 1650 RON (500$) Avg 800KH 2.06RON/H (0.62$/H)
7970 1700 RON (515$) Avg 800KH 2.12RON/H (0.64$/H)
7950 1300 RON (394$) Avg 620KH 2.09RON/H (0.63$/H)
7970 1650 RON (500$) Avg 760KH 2.17RON/H (0.65$/H)
7970 1700 RON (515$) Avg 760KH 2.23RON/H (0.67$/H)
So basically there is no tangible difference between the 2.. Maybe 7970 will have a better resale value when you sell your farm.
Unless of course i`m wrong about the averages. Because i saw 7950's that do 640KH but i don't remember many 7970's doing 800.. So basically if the math is done with an average of 620 for 7950 and 760 for 7970 you actually get a better deal getting 7950's
i did some math here in Romania:
7950 1300 RON (394$) Avg 600KH 2.16RON/H (0.65$/H)
7970 1650 RON (500$) Avg 800KH 2.06RON/H (0.62$/H)
7970 1700 RON (515$) Avg 800KH 2.12RON/H (0.64$/H)
7950 1300 RON (394$) Avg 620KH 2.09RON/H (0.63$/H)
7970 1650 RON (500$) Avg 760KH 2.17RON/H (0.65$/H)
7970 1700 RON (515$) Avg 760KH 2.23RON/H (0.67$/H)
So basically there is no tangible difference between the 2.. Maybe 7970 will have a better resale value when you sell your farm.
Unless of course i`m wrong about the averages. Because i saw 7950's that do 640KH but i don't remember many 7970's doing 800.. So basically if the math is done with an average of 620 for 7950 and 760 for 7970 you actually get a better deal getting 7950's
You can't count on getting 800KH out of all 7970s... I have only seen a few people do it. Plus 7950's use 50w less power.
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