hi
currently thinking about building a rig. from reading this thread . the 290 is the best card to get. I read somewhere that there is a motherboard available now that can support 6 cards. Any1 know of this motherboard?
Topic: AMD R9 290X? - page 2. (Read 108829 times)
If I want to put 5 cards I would put another 290 electricity difference is negligible for 280 and 290 unless you are only mining litecoin
A question to all 290X owners here.
Why did you buy theese gpu`s? I can not work out how they can beat a 280X pricewice.
You're right.Why did you buy theese gpu`s? I can not work out how they can beat a 280X pricewice.
1x 290X = 500 EUR
1x 280X = 250 EUR, so 2x280X=500 EUR
The final cost is the same.
with 2x280X will take more speed than 1x290X
true
but if you look at it like this.
4xamd 290x = +/- 1800 euro = 3600 - 3700 khash
4xamd 280x = +/- 1040 euro = 2800 - 3000 khash
so now thats a diff of about 800 euro's but if you wat to achieve the same hashrate at the 290x
you need to buy another mobo, cpu, memory, storage, powersupply and finally a 280x
and running 2 computers will have a bigger electricity bill.
so in the end you will pay more for 280x to achieve the same khashrate.
but thats only if your planning to build a strong rig etc
I have to agree with this analysis. For people who just want to build 1 or 2 rigs why should they go for 280X. Yes upfront cost is more but that doesn't matter in longer term. I have 4* XFX 290s set up mining away ( 880 for 3 and 900 for 1) so around 3.5Mhz with one Rig. I got them while they were 440$ at amazon. Unfortunately I cannot find them anymore
at that price and most of them are on back order. I can easily make .08 BTC on that rig / day without lifting a finger.. Now If I build a rig from 280X I can get a max of 2.7Mz I lose around .02BTC each dayCost wise 280X are cheaper by 100$ at max So I spend .5BTC extra on the rig which can be recovered in 1.5 Month ( may be 2 month if earnings keep on falling )
Is there any flaw with this reasoning ?
5X280X have similar hash rate to 4X290X. There are many motherboards supporting 6 or 7 cards.
You also need to factor in the cost of electricity.
Since I'm using BAMT 1.5, my 5x-powercolor290x-rig does solid 4600 kHash with no rejected shares but with widely open windows @ 92 degree celsius - so it's not a long term solution
http://oi59.tinypic.com/54vaz9.jpg
http://oi59.tinypic.com/54vaz9.jpg
Hi, someone can help me? I have a problem with my r9 290x sapphire
If i set the TC over 27400 the miner (use multi miner or bfgminer) doesn't mine... why?
I 20 - g 2 - w 512
gpu 938
memory 1500
windows 7
If i set the TC over 27400 the miner (use multi miner or bfgminer) doesn't mine... why?
I 20 - g 2 - w 512
gpu 938
memory 1500
windows 7
Thanks for the info on this thread, was able to setup & get stable ~900khs on my 2 290x's using the figures & tips from the previous posts.
A question to all 290X owners here.
Why did you buy theese gpu`s? I can not work out how they can beat a 280X pricewice.
You're right.Why did you buy theese gpu`s? I can not work out how they can beat a 280X pricewice.
1x 290X = 500 EUR
1x 280X = 250 EUR, so 2x280X=500 EUR
The final cost is the same.
with 2x280X will take more speed than 1x290X
true
but if you look at it like this.
4xamd 290x = +/- 1800 euro = 3600 - 3700 khash
4xamd 280x = +/- 1040 euro = 2800 - 3000 khash
so now thats a diff of about 800 euro's but if you wat to achieve the same hashrate at the 290x
you need to buy another mobo, cpu, memory, storage, powersupply and finally a 280x
and running 2 computers will have a bigger electricity bill.
so in the end you will pay more for 280x to achieve the same khashrate.
but thats only if your planning to build a strong rig etc
I have to agree with this analysis. For people who just want to build 1 or 2 rigs why should they go for 280X. Yes upfront cost is more but that doesn't matter in longer term. I have 4* XFX 290s set up mining away ( 880 for 3 and 900 for 1) so around 3.5Mhz with one Rig. I got them while they were 440$ at amazon. Unfortunately I cannot find them anymore
at that price and most of them are on back order. I can easily make .08 BTC on that rig / day without lifting a finger.. Now If I build a rig from 280X I can get a max of 2.7Mz I lose around .02BTC each dayCost wise 280X are cheaper by 100$ at max So I spend .5BTC extra on the rig which can be recovered in 1.5 Month ( may be 2 month if earnings keep on falling )
Is there any flaw with this reasoning ?
Hi, i can ask you an update about your cgminer config? can you post the config pls? i'm try to find the right configuration but i dont go up 880Kh/s :-)
thanks and compliments for your rig.
I posted my config in the post you quoted. You will not be able to run identical settings to mine, so quit being lazy and follow the guide I took the time to post.
I was finally able to pull nearly a solid mh/s from one 290x for over 6 hours stable 
Nothing really ridiculous either, just 1040/1500 at a TC value that took me quite some time to find. If you want and try for the same, start at 12x shaders for TC and find the best core/mem ratio. Then, just start increasing TC 50-100 each swat till the hashrate suffers. I never had to deviate more than 5mhz on core clock from the 1040 I started at. I'm right under 34000 for a TC value, but if I had to guess I'd say your results probably won't exactly match mine.
Lots of rejects, I was trying a new pool. Ignore the fan speed, don't know wtf is going on with that. Heat absolutely kills these cards too, I could show you a vid of what happens when I stall all my rad fans. The card shoots to high 70's lickidy split, and soon stumbles to 880kh/s or so...
I was able to get to 1.004mh/s, and it looked pretty damn cool having one card in the mh/s range in cgminer. It's not very stable though, yet
Nothing really ridiculous either, just 1040/1500 at a TC value that took me quite some time to find. If you want and try for the same, start at 12x shaders for TC and find the best core/mem ratio. Then, just start increasing TC 50-100 each swat till the hashrate suffers. I never had to deviate more than 5mhz on core clock from the 1040 I started at. I'm right under 34000 for a TC value, but if I had to guess I'd say your results probably won't exactly match mine.
Lots of rejects, I was trying a new pool. Ignore the fan speed, don't know wtf is going on with that. Heat absolutely kills these cards too, I could show you a vid of what happens when I stall all my rad fans. The card shoots to high 70's lickidy split, and soon stumbles to 880kh/s or so...
I was able to get to 1.004mh/s, and it looked pretty damn cool having one card in the mh/s range in cgminer. It's not very stable though, yet
Hi, i can ask you an update about your cgminer config? can you post the config pls? i'm try to find the right configuration but i dont go up 880Kh/s :-)
thanks and compliments for your rig.
290X/290 is not more power efficient than 280X. Even if it is so then the difference is really negligible. I see people mining with cards for 500E and mobos for 200E and can't stop wondering how are you going to make profit with such poorly chosen hardware ?
I need to see if I can find a calculator for this somewhere.
Many BS in this thread so far.
Anyway 290X is too expensive to be a good deal for mining. Also 290 and 290X as a whole are not suitable for mining at least models with the reference cooler due to their extremely high operating frequencies that will melt the card once winter is gone. On the other hand due to current great price gap between 290 and 290X I can say that 290 is much better than 290X. I had a 290 running on my system with about 850kh/s at default frequencies and above 900kh/s at 1050@1450. Noise though is unbearable and temperatures are skyrocketing at minimum about 85C. I returned the card and got 280X.
290X/290 is not more power efficient than 280X. Even if it is so then the difference is really negligible. I see people mining with cards for 500E and mobos for 200E and can't stop wondering how are you going to make profit with such poorly chosen hardware ?
Anyway 290X is too expensive to be a good deal for mining. Also 290 and 290X as a whole are not suitable for mining at least models with the reference cooler due to their extremely high operating frequencies that will melt the card once winter is gone. On the other hand due to current great price gap between 290 and 290X I can say that 290 is much better than 290X. I had a 290 running on my system with about 850kh/s at default frequencies and above 900kh/s at 1050@1450. Noise though is unbearable and temperatures are skyrocketing at minimum about 85C. I returned the card and got 280X.
290X/290 is not more power efficient than 280X. Even if it is so then the difference is really negligible. I see people mining with cards for 500E and mobos for 200E and can't stop wondering how are you going to make profit with such poorly chosen hardware ?
how do you guys get R9 290x working with cgminer?
whenever or whtaever I try i get the decrease TC increase LG error.
only way for me to mine with 290x is using Guiminer-scrypt
whenever or whtaever I try i get the decrease TC increase LG error.
only way for me to mine with 290x is using Guiminer-scrypt
I solved this problem by adding another 4GB memory stick to my rig to up the memory to 8GB.
To repeat, to get the Thread Concurrency above 8192 or 28160 which is 10x 2816 shaders it seems that the pc needs more memory. I have no idea why.
Also, I read on here that TC should be at ~ 12x shaders, or 33792 was good, but i got better performance at 32765. 875 stable Khash/sec.
Also, I am working to see if adding or removing --auto-fan helps hash rate. does anyone know about this?
EDIT: I just tried with and without the --auto-fan option, and no effect on hash rate.
A question to all 290X owners here.
Why did you buy theese gpu`s? I can not work out how they can beat a 280X pricewice.
You're right.Why did you buy theese gpu`s? I can not work out how they can beat a 280X pricewice.
1x 290X = 500 EUR
1x 280X = 250 EUR, so 2x280X=500 EUR
The final cost is the same.
with 2x280X will take more speed than 1x290X
true
but if you look at it like this.
4xamd 290x = +/- 1800 euro = 3600 - 3700 khash
4xamd 280x = +/- 1040 euro = 2800 - 3000 khash
so now thats a diff of about 800 euro's but if you wat to achieve the same hashrate at the 290x
you need to buy another mobo, cpu, memory, storage, powersupply and finally a 280x
and running 2 computers will have a bigger electricity bill.
so in the end you will pay more for 280x to achieve the same khashrate.
but thats only if your planning to build a strong rig etc
So AMD just annunced the new line of GPUs. For bitcoin mining they wont be good compared to ASICs but how about litecoin? What can I expect from the 290X? Hashrates higher than the 7990? What do you think and whats your opinion on the card?
time changes so fast, scrypt asic's so close
I was finally able to pull nearly a solid mh/s from one 290x for over 6 hours stable
I had instaled Water cooling and after that Cgminer only starts with black screen (no stats)It starting like before - check pools, etc.. but after that only bin file is created and seems that GPU calculated something but - no stats at all.. i cant see HashRate
Sounds weird, but plug the fan in, then remove it. Do this after windows has booted up.
After you've done that, start cgminer. No more black screen.
I am using one of these so I no longer have to plug a fan in.
http://www.frozencpu.com/products/19786/cab-1512/4-Pin_PWM_Male_Fan_Connector_to_4-Pin_Female_Mini_GPU_Fan_Connector_Adapter_Cable.html
I was finally able to pull nearly a solid mh/s from one 290x for over 6 hours stable
I had instaled Water cooling and after that Cgminer only starts with black screen (no stats)It starting like before - check pools, etc.. but after that only bin file is created and seems that GPU calculated something but - no stats at all.. i cant see HashRate
can anyone confirm whether these hdmi to vga adaptors can work as a dummy plug together with resistors? thanks.
http://www.ebay.com/itm/PC-HDMI-Male-to-VGA-SVGA-RGB-Video-Audio-Cable-Lead-Converter-Adapter-1080P-3-5-/201016938652?pt=UK_BOI_Office_Equipment_Supplies_Office_Equipment_ET&var=&hash=item2ecd8b109c
http://www.ebay.com/itm/PC-HDMI-Male-to-VGA-SVGA-RGB-Video-Audio-Cable-Lead-Converter-Adapter-1080P-3-5-/201016938652?pt=UK_BOI_Office_Equipment_Supplies_Office_Equipment_ET&var=&hash=item2ecd8b109c
Sure thing! Just stick the 68 ohm resistor legs into the specific vga plug holes and bingo.
can anyone confirm whether these hdmi to vga adaptors can work as a dummy plug together with resistors? thanks.
http://www.ebay.com/itm/PC-HDMI-Male-to-VGA-SVGA-RGB-Video-Audio-Cable-Lead-Converter-Adapter-1080P-3-5-/201016938652?pt=UK_BOI_Office_Equipment_Supplies_Office_Equipment_ET&var=&hash=item2ecd8b109c
http://www.ebay.com/itm/PC-HDMI-Male-to-VGA-SVGA-RGB-Video-Audio-Cable-Lead-Converter-Adapter-1080P-3-5-/201016938652?pt=UK_BOI_Office_Equipment_Supplies_Office_Equipment_ET&var=&hash=item2ecd8b109c
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