AMD Tahiti GPUs (Radeon 7950 / 7970 / 280X / 7990 ) Owners Appreciation Thread

[FP91G]

An update.. with an old release of HiveOs that embed Amd drivers 19.20 and lolminer i'm able to mine ethash4g at 23-25mh/s with 140W. Currently is 0,016ETC (1.4$) before electric bill. Not much but at this prices it's amazing an almost 9year gpu could be still make profits

You sure it’s only 140Watts? How did you measure? From the wall?

I ask because when I used to mine ETH with my 280x back in 2016, the speed was around 20mhs and power consumption was always around 200 watts.

With a 5 GPU rig it consumed about 1000 watts and this is with every GPU undervolted as low as it can possibly go. I would of loved to get 140 watts and 23mhs considering my RX series GPUs hash at like 28-29mhs and they consume 130-140 watts.

Newbies in mining do not use wattmeters.
The trusses for 5x280 were used on two 750 watt power supplies. 1 kilowatt power supplies were expensive.
The 280x video card consumed over 200 watts.
3 GB video cards will be able to mine the Ethereum classic for about another 10 months, but the hashrate will gradually decrease with each epoch.

[1714864982]

1714864982

[adaseb]

Even if he didn't have a Wattmeter how did he measure that it was 140Watts. As far as I know there is no such power consumption indicator with any of the monitoring software for Tahiti GPUs. Maybe perhaps he was shown the current and multipled it by voltage to get a wattage. However Ive never see a software which calculates any type of power consumption for Tahiti's.

And yes they are power hungry. For ETH it used 200 Watts which is considered too much by todays standards however back in 2014 I mined with many of these 280X mining Litecoin and guess how much power they used??? For a 2 GPU rig so 2 * R9 280X the power at the wall was over 700 Watts. Even if you undervolted it still used tons of power.

Basically a single 750 Watt PSU could only power 2 GPUs.

[FP91G]

Even if he didn't have a Wattmeter how did he measure that it was 140Watts. As far as I know there is no such power consumption indicator with any of the monitoring software for Tahiti GPUs. Maybe perhaps he was shown the current and multipled it by voltage to get a wattage. However Ive never see a software which calculates any type of power consumption for Tahiti's.

And yes they are power hungry. For ETH it used 200 Watts which is considered too much by todays standards however back in 2014 I mined with many of these 280X mining Litecoin and guess how much power they used??? For a 2 GPU rig so 2 * R9 280X the power at the wall was over 700 Watts. Even if you undervolted it still used tons of power.

Basically a single 750 Watt PSU could only power 2 GPUs.

A lot of time has passed and I could be wrong, but it was 2 power supplies of 750 or 850 watts.
For Ethereum, this was quite enough, but the memory of these video cards was 3 GB, so the R9 280X was replaced with other video cards.
I liked the R9 380 and R9 380X better because they were cold.

[adaseb]

Even if he didn't have a Wattmeter how did he measure that it was 140Watts. As far as I know there is no such power consumption indicator with any of the monitoring software for Tahiti GPUs. Maybe perhaps he was shown the current and multipled it by voltage to get a wattage. However Ive never see a software which calculates any type of power consumption for Tahiti's.

And yes they are power hungry. For ETH it used 200 Watts which is considered too much by todays standards however back in 2014 I mined with many of these 280X mining Litecoin and guess how much power they used??? For a 2 GPU rig so 2 * R9 280X the power at the wall was over 700 Watts. Even if you undervolted it still used tons of power.

Basically a single 750 Watt PSU could only power 2 GPUs.

A lot of time has passed and I could be wrong, but it was 2 power supplies of 750 or 850 watts.
For Ethereum, this was quite enough, but the memory of these video cards was 3 GB, so the R9 280X was replaced with other video cards.
I liked the R9 380 and R9 380X better because they were cold.

Yeah back in late 2015...early 2016 I had a huge dilemma. Basically the only GPUs that I was in the market for were the R9 280X or the R9 380. Both of them cost almost the same... maybe the R9 380 a little more.

Here is the thing. When the ETH DAG was very low, the R9 280X mined at like 26MH/s or so. The R9 380 mined at like 21-22MH/s. So I basically decided to get the R9 280X instead. Spent most of my budget on those... big mistake.

Why? I didn't realise that the R9 280X would slow down on each new DAG, eventually from 26MH/s it mined at 21MH/s, same speed as R9 380 however the 380 never slowed down but the 280X. Something called DAG Thrashing bug.

So if I bought the R9 380, I could of mined longer and because it was 4GB even longer that the 3GB 280X.

[iRonNuke]

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.

[adaseb]

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.

[DrX]

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

[iRonNuke]

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.

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.

[fmz89]

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 

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

[sxemini]

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 

[FP91G]

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.

[Sweminer777]

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

[arielbit]

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!

[adaseb]

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.

[arielbit]

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.

[adaseb]

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.

[Mr.merson]

out of curiosity for the 3-2GB versions you will be currently mining? kawpow has his dag over 3.7GB and etc over 3GB

[arielbit]

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.

[arielbit]

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.

[FP91G]

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.