All the 5830's in my rigs are getting sold for this 7790 for BTC and LTC.
lower temps, lower wattage... overclock the core to get 300Mh/s BTC or 300Kh/s LTC... I like this!!!
Topic: AMD 7790(GCN 1.1) - page 3. (Read 15141 times)
Hope you don't mind a newbie question here! 
But does it still make sense to buy a Radeon 7850 for mining?
How long does it currently take for you guys to mine 1BTC with such a 7850?
Since I'm totally new to mining I run a test with my gforce at about 80Mhs and didn't make even 1 satoshi in days. So when I multiply times 3.5, which is about the performance of a 7850 (280Mhs), whats the gain? It still would take months to make 1BTC. Am I wrong?
But does it still make sense to buy a Radeon 7850 for mining?
How long does it currently take for you guys to mine 1BTC with such a 7850?
Since I'm totally new to mining I run a test with my gforce at about 80Mhs and didn't make even 1 satoshi in days. So when I multiply times 3.5, which is about the performance of a 7850 (280Mhs), whats the gain? It still would take months to make 1BTC. Am I wrong?
Mine hash at..
80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
Why would you OC your RAM to mine BTC? 80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
Mine hash at..
80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
Why would you OC your RAM to mine BTC? 80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
I see no power difference measured at the wall by underclocking the memory and as it's used for gaming, it's a hassel to keep changing it.
I don't notice any difference in hashrate with memory at 1000 vs 1200, with cgminer... I haven't tested if it makes a difference with reaper, though. Can anyone confirm or deny?
You talking LTC or BTC? While mining BTC, I notice very little difference in hashrate if I change the RAM speeds from 1500 to 950, or even down to 410. I DO notice much lower temps, however, and lower power draw. I've only tried lowering memory down to 1000 from the default 1200 on my HD 7850. I haven't noticed any significant hash rate difference with either LTC or BTC at 1000 vs 1200, but I agree that there's a significant lowering of temperature and power draw at 1000 vs 1200.
Mine hash at..
80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
Why would you OC your RAM to mine BTC? 80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
I don't notice any difference in hashrate with memory at 1000 vs 1200, with cgminer... I haven't tested if it makes a difference with reaper, though. Can anyone confirm or deny?
You talking LTC or BTC? While mining BTC, I notice very little difference in hashrate if I change the RAM speeds from 1500 to 950, or even down to 410. I DO notice much lower temps, however, and lower power draw. I don't notice any difference in hashrate with memory at 1000 vs 1200, with cgminer... I haven't tested if it makes a difference with reaper, though. Can anyone confirm or deny?
Mine hash at..
80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
Why would you OC your RAM to mine BTC? 80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
Mine hash at..
80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
Why would you OC your RAM to mine BTC? 80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
896 Stream processors is less than the 1024 stream processors in the 7850
It's the same price as a 7850, trust me get a 7850,
It's the same price as a 7850, trust me get a 7850,
Agreed. The base clock of the 7850 is 860, but they seem to easily overclock up to 1000 or higher. I have one that does 1050 and another that does 1150.
At equal clocks (1000 core), the higher number of stream processors in the 7850 will result in a higher hash rate.
And if you want to switch to LTC at some point, a 2 GB 7850 will allow a higher thread concurrency, which will also result in a higher hash rate.
I suspect it will be running screaming hot, noisy and will have no headroom to overclock!
7790's 896 Stream processors is less than the 1024 stream processors in the 7850
It's the same price as a 7850, trust me get a 7850,
The chart is bullshit saying a 7850 does 232MH/s
Mine hash at..
80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
add 100w for the system.
If they are really getting 250MH/s for 38w that would be amazing, but the specs say 85w!
7790's 896 Stream processors is less than the 1024 stream processors in the 7850
It's the same price as a 7850, trust me get a 7850,
The chart is bullshit saying a 7850 does 232MH/s
Mine hash at..
80w 250MH/s reference 860/1200 clock.
100w 300MH/s stable 1050/1450 overclock with no volt mods.
add 100w for the system.
If they are really getting 250MH/s for 38w that would be amazing, but the specs say 85w!
It's actually a very nice miner for it's expected price and power consumption.
If ASICs don't start taking over soon, 8 series Radeons are going to be really nice miners.
If ASICs don't start taking over soon, 8 series Radeons are going to be really nice miners.
I realize with the low CU count and whatnot it won't be a power card for mining, but does anyone who knows anything about the underlying microarch know if it'll up the compute performance at all? Anandtech just had an article on it, but it seems very similar to the old 7xxx series.
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