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Topic: AMD Tahiti GPUs (Radeon 7950 / 7970 / 280X / 7990 ) Owners Appreciation Thread (Read 16155 times)

legendary
Activity: 3738
Merit: 1708
They are still ok for some type of light gaming. Especially when you can crossfire them. Sure power consumption is not great but for gamers it won’t matter.

In terms of mining. I think when ZEC went all ASICs it was the end of the road for these GPUs. They went from mining Bitcoin in the early days, to Litecoin and doge during the 2014 era, then later to ETH and finally ZEC was last good coin to mine on them.
legendary
Activity: 3388
Merit: 1059
These video cards can no longer be found on sale without serious problems. The 7970/280x video cards have 3 GB of memory, the 290 video card has 4 GB of memory, which will not allow mining some modern coins, and these video cards have very high power consumption, which is also a problem.

Still better than a heater, power consumption is heat generation, the more power consumed the more heat generated, these cards can still reduce cost of heating if you are in a cold climate and the newer cards are still overpriced hehe. Even better if you already own them.
Do you seriously want to make a heating system out of 7 year old graphics cards? With the current profit and problems with old video cards that have a memory limit, I would not do experiments. Do you suggest putting these video cards in a special liquid?

If the cards are 7 year olds, the motherboards that they plugged in are teenagers LOL.

No they are not going to explode, just plain air cooling will suffice.

Even if the profit is negative 3 usd, with zero hash rate heater your profit will be negative 7 usd, you will save 4 usd..that is good enough.
legendary
Activity: 1610
Merit: 1026
These video cards can no longer be found on sale without serious problems. The 7970/280x video cards have 3 GB of memory, the 290 video card has 4 GB of memory, which will not allow mining some modern coins, and these video cards have very high power consumption, which is also a problem.

Still better than a heater, power consumption is heat generation, the more power consumed the more heat generated, these cards can still reduce cost of heating if you are in a cold climate and the newer cards are still overpriced hehe. Even better if you already own them.
Do you seriously want to make a heating system out of 7 year old graphics cards? With the current profit and problems with old video cards that have a memory limit, I would not do experiments. Do you suggest putting these video cards in a special liquid?
legendary
Activity: 3388
Merit: 1059
These video cards can no longer be found on sale without serious problems. The 7970/280x video cards have 3 GB of memory, the 290 video card has 4 GB of memory, which will not allow mining some modern coins, and these video cards have very high power consumption, which is also a problem.

Still better than a heater, power consumption is heat generation, the more power consumed the more heat generated, these cards can still reduce cost of heating if you are in a cold climate and the newer cards are still overpriced hehe. Even better if you already own them.
legendary
Activity: 1610
Merit: 1026
These video cards can no longer be found on sale without serious problems. The 7970/280x video cards have 3 GB of memory, the 290 video card has 4 GB of memory, which will not allow mining some modern coins, and these video cards have very high power consumption, which is also a problem.
legendary
Activity: 3388
Merit: 1059
By the way, as i pointed out in other threads,  3080, 3080ti, 3090 with lower end coolers even with the best thermal pads/paste is like buying 290/290x where there are no improved coolers available vs buying the 390 and 390x with improved coolers.

The only exception is when you are in a cold climate area, the low quality coolers can suffice.

This is also what made this 7950, 7970/280x the best mining card because it is the best mining card in all climate temps.
legendary
Activity: 3388
Merit: 1059
They mined for years and stored for years..they were not the ones you are saying..

There are different batch with different vrams, hynix and elpida that hashes differently too..maybe there are bad batches for the unlucky ones.

I played with the 290x too..



This is what i'm comparing the 280x to 290x...in terms of present day

280x is like 3070 level of heat with the performance of 3080ti vs the 290 (3090) and the 290x (3090ti).


They are going back to the storage though because i have more profitable cards for the space, electrical space, and heat space.

About "for parts only"...yeah this is a must, i have a 3080ti screw that fucked up because i used a lousy screw driver...you know what, i got a replacrment screw from some old 390 lol.
full member
Activity: 200
Merit: 100
out of curiosity for the 3-2GB versions you will be currently mining? kawpow has his dag over 3.7GB and etc over 3GB
legendary
Activity: 3738
Merit: 1708
Yeah something strange going on with that model of GPU from Sapphire. The Sapphire from the 7xxx era and the current era were all pretty robust. However something about that Dual-X model which made them susceptible to blowing up.

Even before ETH, people bought those to mine LTC and Doge (Scrypt) algo and they had similar issues. Within a few days, they would go up in smoke. However since they were new back then, you just had to RMA them and got sent a new one.

legendary
Activity: 3388
Merit: 1059
cleaning up some of my storage stuff.

played with two 280x sapphires.

both burned something in the board, lighted and smoked....aaand it both runs.

4 screws, you clean and you are good to go...with just 4 SCREWS!


Let me guess. Is this the Dual-X Sapphire R9 280X?

Yeah I had the same issue. Started to mine ETH with one years ago. All of a sudden came home with rig turned off. Started it back up and poof.

Opened it up and some MOSFET or some VRM had burn't out. So I desoldered it for fun. And started it back up and it worked. Undervolted it and underclocked it. A few days later another MOSFET went. So its been for parts ever since.

I gamed with it for a while and it was fine but as soon as I tried mining ETH, it completely went up in smoke instantely.

yup, dual x

surface mounted chip capacitor or resistor that was burned, i say they might be in a better condition than mosfet or vrm burning out there.
legendary
Activity: 3738
Merit: 1708
cleaning up some of my storage stuff.

played with two 280x sapphires.

both burned something in the board, lighted and smoked....aaand it both runs.

4 screws, you clean and you are good to go...with just 4 SCREWS!


Let me guess. Is this the Dual-X Sapphire R9 280X?

Yeah I had the same issue. Started to mine ETH with one years ago. All of a sudden came home with rig turned off. Started it back up and poof.

Opened it up and some MOSFET or some VRM had burn't out. So I desoldered it for fun. And started it back up and it worked. Undervolted it and underclocked it. A few days later another MOSFET went. So its been for parts ever since.

I gamed with it for a while and it was fine but as soon as I tried mining ETH, it completely went up in smoke instantely.
legendary
Activity: 3388
Merit: 1059
cleaning up some of my storage stuff.

played with two 280x sapphires.

both burned something in the board, lighted and smoked....aaand it both runs.

4 screws, you clean and you are good to go...with just 4 SCREWS!
hero member
Activity: 754
Merit: 500
1xBit the largest casino
I have a rig with one RX 550 4 GB, one HD 7950 3 GB and one R9 290 4 GB. All mine ETC 59 MH/s @ 398 W at the wall (measured with power meter).

Also it's an 850 W PSU, only bronze rated.

RX 550: 11.35 MH/s
HD7950: 24.46 MH/s
R9 290: 23.13 MH/s

I'm trying to buy older AMD cards because they are really cheap and still profitable, if you known how to config them.

Weird that HD7950 is higher than R9 290, i think it should be close to 28-30Mh/s
R9 290 will give you a lot of hashrate, but it's very hard to find these cards in good condition.
Video cards HD7950, HD7970 (R9 280), R9 290 are very hot and they had a lot of overheating problems. When the 3XX series appeared, it helped a lot to solve overheating problems for miners.

Didnt know this cards were hashing that much, thanks for the tip! i sold my 7990r and finding replacements now Smiley
legendary
Activity: 1610
Merit: 1026
I have a rig with one RX 550 4 GB, one HD 7950 3 GB and one R9 290 4 GB. All mine ETC 59 MH/s @ 398 W at the wall (measured with power meter).

Also it's an 850 W PSU, only bronze rated.

RX 550: 11.35 MH/s
HD7950: 24.46 MH/s
R9 290: 23.13 MH/s

I'm trying to buy older AMD cards because they are really cheap and still profitable, if you known how to config them.

Weird that HD7950 is higher than R9 290, i think it should be close to 28-30Mh/s
R9 290 will give you a lot of hashrate, but it's very hard to find these cards in good condition.
Video cards HD7950, HD7970 (R9 280), R9 290 are very hot and they had a lot of overheating problems. When the 3XX series appeared, it helped a lot to solve overheating problems for miners.
member
Activity: 1558
Merit: 69
I have a rig with one RX 550 4 GB, one HD 7950 3 GB and one R9 290 4 GB. All mine ETC 59 MH/s @ 398 W at the wall (measured with power meter).

Also it's an 850 W PSU, only bronze rated.

RX 550: 11.35 MH/s
HD7950: 24.46 MH/s
R9 290: 23.13 MH/s

I'm trying to buy older AMD cards because they are really cheap and still profitable, if you known how to config them.

Ok you know how to config them? I mean your RX550 do 11mh instead of 13.5 - 15 mh  Cheesy
legendary
Activity: 1766
Merit: 1002
I have a rig with one RX 550 4 GB, one HD 7950 3 GB and one R9 290 4 GB. All mine ETC 59 MH/s @ 398 W at the wall (measured with power meter).

Also it's an 850 W PSU, only bronze rated.

RX 550: 11.35 MH/s
HD7950: 24.46 MH/s
R9 290: 23.13 MH/s

I'm trying to buy older AMD cards because they are really cheap and still profitable, if you known how to config them.

Weird that HD7950 is higher than R9 290, i think it should be close to 28-30Mh/s
the good old days has been passed, well 2012 card still mining in 2021, the power is to wild for greener mining this days  Grin

surely the cards still able to makes some bucks, these veteran gpus already mining since first crypto mining sha256&script, better to put them on museum

jr. member
Activity: 98
Merit: 6
Weird that HD7950 is higher than R9 290, i think it should be close to 28-30Mh/s

I don't think it's weird, I have lowered the core clock to just 800 MHz and undervolted it some on the 290 to reduce the power, it's a blower style card and it overheats quite easy, and I don't want the fan to do more like 60% because of the noise. Smiley

Sure it CAN do maybe 28-30 MH/s, but I don't think that the most efficent thing to run at. Like you could do 31-32+ MH/s on Polaris cards, but that's either not efficent over all.
DrX
member
Activity: 233
Merit: 20
I have a rig with one RX 550 4 GB, one HD 7950 3 GB and one R9 290 4 GB. All mine ETC 59 MH/s @ 398 W at the wall (measured with power meter).

Also it's an 850 W PSU, only bronze rated.

RX 550: 11.35 MH/s
HD7950: 24.46 MH/s
R9 290: 23.13 MH/s

I'm trying to buy older AMD cards because they are really cheap and still profitable, if you known how to config them.

Weird that HD7950 is higher than R9 290, i think it should be close to 28-30Mh/s
legendary
Activity: 3738
Merit: 1708
I have a rig with one RX 550 4 GB, one HD 7950 3 GB and one R9 290 4 GB. All mine ETC 59 MH/s @ 398 W at the wall (measured with power meter).

Also it's an 850 W PSU, only bronze rated.

RX 550: 11.35 MH/s
HD7950: 24.46 MH/s
R9 290: 23.13 MH/s

I'm trying to buy older AMD cards because they are really cheap and still profitable, if you known how to config them.

Wow. I think something must of changed in the new ETC algo because these figures would of been very difficult to achieve back in 2016.

I had a bunch of the r9 290 and if you undervolted them to the min it still pulled 200 watts while hashing at 25-26mhs. You could give it more juice and get it to hash at 29-31mhs but it consumed way too much power.

The 7950 all pulled at least 200 watts, especially when the DAG was low and it hashed > 20mhs.

Add in your 550 plus the Mobo+cpu+fans i would way over 400 watts.
jr. member
Activity: 98
Merit: 6
I have a rig with one RX 550 4 GB, one HD 7950 3 GB and one R9 290 4 GB. All mine ETC 59 MH/s @ 398 W at the wall (measured with power meter).

Also it's an 850 W PSU, only bronze rated.

RX 550: 11.35 MH/s
HD7950: 24.46 MH/s
R9 290: 23.13 MH/s

I'm trying to buy older AMD cards because they are really cheap and still profitable, if you known how to config them.
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