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

[adaseb]

I will try and see what speeds/power consumption I get with XMR-Stak and SGMiner. Which versions are you using exactly?

Oh good point, I use sgminer-gm (has no devfee). I get the same speed with xmr-stak fire-ice, but that one has devfee.

In the past I think I've took the lower memory straps and pasted them into the higher memory timings like we all do with the RX series.

I use the one-click patch in polaris bios editor for the RX series, better performance than using lower straps? I too think the timings that I linked to can be improved further, tailor them to Monero v7 algorithm precisely?

The core is very power hungry though, don't think there is anything we can do there. Upping core speed definitely boosts cryptonight hashrate.

Yes but these cards are strange. Sometimes going from 950Mhz to 1000Mhz results in a 20% increase but going from 1050Mhz to 1100Mhz might only result in a 5% increase.

I think its because of the way the core engine and the memory clock work together since its a very memory intensive algo.

[1714862897]

1714862897

[Privatoria]

I’m still using one R9 280 with Frankenstein cooler made from two 120 mm fans. I undervolted this card in the Bios and I’m using it for Monero mining. Unfortunately my card has Hynix memory with bad quality so I have only 500 h/s with 1,013V VDDC, GPU Core 1000 Mhz, Memory 1400 Mhz. GPU_Z shows VDDC power only 30 W. I think it’s not so bad.

[Marvell2]

I’m still using one R9 280 with Frankenstein cooler made from two 120 mm fans. I undervolted this card in the Bios and I’m using it for Monero mining. Unfortunately my card has Hynix memory with bad quality so I have only 500 h/s with 1,013V VDDC, GPU Core 1000 Mhz, Memory 1400 Mhz. GPU_Z shows VDDC power only 30 W. I think it’s not so bad.

yeah i don’t know how ppl claim 700 or even 600 hs with tatiti 7950s and 280s

i get like 450 480 max power usesage is way lower than what people claim though 80 to 100 watts from the wall

[adaseb]

I’m still using one R9 280 with Frankenstein cooler made from two 120 mm fans. I undervolted this card in the Bios and I’m using it for Monero mining. Unfortunately my card has Hynix memory with bad quality so I have only 500 h/s with 1,013V VDDC, GPU Core 1000 Mhz, Memory 1400 Mhz. GPU_Z shows VDDC power only 30 W. I think it’s not so bad.

yeah i don’t know how ppl claim 700 or even 600 hs with tatiti 7950s and 280s

i get like 450 480 max power usesage is way lower than what people claim though 80 to 100 watts from the wall

What memory do you have? I had bad speeds with Elpida memory. With the Hynix memory I get 600H/S easy.

I’m still using one R9 280 with Frankenstein cooler made from two 120 mm fans. I undervolted this card in the Bios and I’m using it for Monero mining. Unfortunately my card has Hynix memory with bad quality so I have only 500 h/s with 1,013V VDDC, GPU Core 1000 Mhz, Memory 1400 Mhz. GPU_Z shows VDDC power only 30 W. I think it’s not so bad.

Is this an R9 280 or an R9 280X? Maybe you got less compute units.

[Marvell2]

I’m still using one R9 280 with Frankenstein cooler made from two 120 mm fans. I undervolted this card in the Bios and I’m using it for Monero mining. Unfortunately my card has Hynix memory with bad quality so I have only 500 h/s with 1,013V VDDC, GPU Core 1000 Mhz, Memory 1400 Mhz. GPU_Z shows VDDC power only 30 W. I think it’s not so bad.

yeah i don’t know how ppl claim 700 or even 600 hs with tatiti 7950s and 280s

i get like 450 480 max power usesage is way lower than what people claim though 80 to 100 watts from the wall

What memory do you have? I had bad speeds with Elpida memory. With the Hynix memory I get 600H/S easy.

I’m still using one R9 280 with Frankenstein cooler made from two 120 mm fans. I undervolted this card in the Bios and I’m using it for Monero mining. Unfortunately my card has Hynix memory with bad quality so I have only 500 h/s with 1,013V VDDC, GPU Core 1000 Mhz, Memory 1400 Mhz. GPU_Z shows VDDC power only 30 W. I think it’s not so bad.

Is this an R9 280 or an R9 280X? Maybe you got less compute units.

seems like hynix

[adaseb]

I’m still using one R9 280 with Frankenstein cooler made from two 120 mm fans. I undervolted this card in the Bios and I’m using it for Monero mining. Unfortunately my card has Hynix memory with bad quality so I have only 500 h/s with 1,013V VDDC, GPU Core 1000 Mhz, Memory 1400 Mhz. GPU_Z shows VDDC power only 30 W. I think it’s not so bad.

yeah i don’t know how ppl claim 700 or even 600 hs with tatiti 7950s and 280s

i get like 450 480 max power usesage is way lower than what people claim though 80 to 100 watts from the wall

What memory do you have? I had bad speeds with Elpida memory. With the Hynix memory I get 600H/S easy.

I’m still using one R9 280 with Frankenstein cooler made from two 120 mm fans. I undervolted this card in the Bios and I’m using it for Monero mining. Unfortunately my card has Hynix memory with bad quality so I have only 500 h/s with 1,013V VDDC, GPU Core 1000 Mhz, Memory 1400 Mhz. GPU_Z shows VDDC power only 30 W. I think it’s not so bad.

Is this an R9 280 or an R9 280X? Maybe you got less compute units.

seems like hynix

Which GPU do you have exactly?

Also which software are you using?

What is your engine core clock / memory clock ?

How much system RAM do you have? If you got like 2GB memory you might be getting these issues.

[SBRSAB]

I too got 500-600 h/s on all twelve cards before memory timings mod and using two threads. The Hynix MFR timings are really loose by default, the timings I linked to do wonders.

[adaseb]

Alright giving this thread a BUMP since tomorrow is the XMR fork and the current version of Claymore 11.3 won't be compatible anymore with XMR V8.

I haven't had luck with any of the alternate miners. Basically SRBMiner fails to start and XMR-Stak gets crazy low hashrates and with any tweaking it just crashes the entire rig.

My guess is that I am running the older AMD Drivers 15.12 which causes these issues but would rather get someone else's input before I upgrade to the newer AMD drivers which run poorly on older GPUs.

Wondering if the Tahiti's will still be able to mine XMR V8 at a decent speed and power usage. Since they have a huge memory bandwidth it might still be worth keeping them running.

[Coindgr]

I tried the XMR-Stak 2.5.1 got around 450H with 280x and pc just hangs some times, also no fan adjustment, Claymore was much better in this.

How much you're getting with monero v8 fork?

[adaseb]

I tried the XMR-Stak 2.5.1 got around 450H with 280x and pc just hangs some times, also no fan adjustment, Claymore was much better in this.

How much you're getting with monero v8 fork?

My results are similiar. Using XRM-Stak 2.4.x or so and I get 400Hs and previously I got 600Hs with V7 Claymore.

These are running at 1000/1500 and undervolted to the max, like 0.95V.

SRBminer I could never get to work. And trying to add another thread on XMR-Stak results in an instant system freeze.

Judging by the temps, the power consumption seems the same.

These results are bad because most Vega and RX GPUs are running at 90% of their V7 speed. We seem to be running at 66% of our V7 speed. And it was already not profitable. So V8 might be the death of the Tahiti.

We had a good run since 2012, but After 7 years it might be time to shut these GPUs off or sell to some low budget gamers who might Crossfire them.

Another option is to mine Ubiq, it should work since the DAG is low. Speeds might be 20-25Mhs however the GPUs will consume over 200Watts each if i recall correctly when I mined ETH back in 2016.


EDIT: Measured the temps with Kill-a-watt tool. And the V8 uses exactly the same power as V7.

[A-Bolt]

Cryptonight V8
SRBMiner 1.6.8
HD7970 1180/1600
Adrenalin 18.8.1
560 Mh/s

[FloppyPurpleGherkin]

Just took the last chunk (18) of my original (56) 280x's offline, These badboys mined everything from LTC, Dash(Darkcoin it was called back in 13-14), a fuck ton of ETH and many more, RIP you little gems, you paid for yourselfs 100,000's times over    

[adaseb]

Just took the last chunk (18) of my original (56) 280x's offline, These badboys mined everything from LTC, Dash(Darkcoin it was called back in 13-14), a fuck ton of ETH and many more, RIP you little gems, you paid for yourselfs 100,000's times over    

Yeah I completely agree.

I never mined BTC with them but a few GPUs i've bought second hand the guy actually mined BTC with them. They were originally released in 2012 so you had a few good months of BTC mining with GPUs and at the time the 7970 was king.

Later I bought them second hand and mined LTC, then Dogecoin, then Dash, then ETH, then ZEC, then XMR and now might be time to shut them off and Craiglist them once the GPU dumping phase passes.

No other GPU has made a profound impact on mining and never will.

RIP!

[Privatoria]

My RX280 with Hynix memory gives errors on all miners except for XMRStack, and the speed dropped by half compared to Claymore. It is a pity, but it seems that this card has already outlived its own. Maybe I can use it again if Claymore upgrades his miner.

[almonk]

These cards were holding great value for all these years. Recently there are many rapid developments in mining arena and who knows they might be still useful again.

[afrar]

I have 80 pcs for these cards. 30% of cards still brand new ,never used also.

Anyone interested to buy it , contact me

Regards
Abrar

afrarnokia@gmail.com
whatsapp +85260327949

[_javier_]

50 pieces of these monsters GPU (mostly Sapphire VaporX) laying over there. I direct replaced them with 1070s in my rigs.

I heard of the monero fork.. maybe they will come alive again 

[Sikkan666]

extremely impressive that cards that came out 2012 still can perform at a pretty decent hash/watt TODAY!.. its friggin 6 years+ they came out now! I started with a few 280/280x/7990s and now runs all nvidia today. But yes, the 7970/280x is legendary cards

[adaseb]

Had some time and did some testing with these Tahiti GPU.

Basically XMR-Stak seems to work. The version I used is XMR Aeon Stak 2.5.2 and I found the link in Mattthev signature.

If you got the 7970/280X use intensity 920 and you should get at least 500Hs and up to 550Hs depending on how high your core/engine clock is set. At 1000/1500 you should get close to 500Hs and the GPU shouldn't consume much electricity, around 130Watts or so.

With 7950 with 28 Compute units you will need to lower the intensity a little bit and your speed will be slightly lower.

If you are getting incorrect shares, you will need to lower your memory clock.

Putting these numbers into What to mine with 10 cent power results in a total net profit of nothing. So if you are a die hard hodler or got free or cheaper power, you can mine XMR but for most i think it's time to pack up these GPUs.

[Ossidalm]

Had some time and did some testing with these Tahiti GPU.

Basically XMR-Stak seems to work. The version I used is XMR Aeon Stak 2.5.2 and I found the link in Mattthev signature.

If you got the 7970/280X use intensity 920 and you should get at least 500Hs and up to 550Hs depending on how high your core/engine clock is set. At 1000/1500 you should get close to 500Hs and the GPU shouldn't consume much electricity, around 130Watts or so.

With 7950 with 28 Compute units you will need to lower the intensity a little bit and your speed will be slightly lower.

If you are getting incorrect shares, you will need to lower your memory clock.

Putting these numbers into What to mine with 10 cent power results in a total net profit of nothing. So if you are a die hard hodler or got free or cheaper power, you can mine XMR but for most i think it's time to pack up these GPUs.

If you undervolt a lot, you might get thin profit. It is good only for winter heating.