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[TC] Rumour R9 290X2 - The miner's holy grail - Page 13

post #121 of 133
Quote:
Originally Posted by ebduncan View Post

I doubt it, there are still plenty of different coin types to mine profitably for quite some time yet.
Wrong. Power consumption alone on the Scyrpt ASICs (Gridseeds) vs a video card.. blows GPUs out of the park. Good luck on your ROI with your GPUs.
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post #122 of 133
Quote:
Originally Posted by Xtreme21 View Post

Wrong. Power consumption alone on the Scyrpt ASICs (Gridseeds) vs a video card.. blows GPUs out of the park. Good luck on your ROI with your GPUs.

efficiency wise it makes sense to go to ASICs, however it is STILL profitable to mine with a GPU and will remain so for quite some time..... ROI? return on investment?

Clearly if there are better options out there for mining, why would you invest in GPU's in the first place? However for the people who already have the GPU's you might as well keep them mining as long as your turning profit which you can.

Also the ROI on the ASIC's is a few months...... gridseeds don't exactly mine super fast think they advertise 320k/hash for 300$ but they only use 6-7 watts of electric.
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post #123 of 133
Quote:
Originally Posted by Tobiman View Post

I also use the stilts bios on my 290 and this looks really impressive but I don't use any of the lower vddc bioses since my goal was max hash rate from the beginning. I get about 1mh/s with the regular performance bios on my Powercolor PCS+ 290 at 1100/1400 and 1.25V. GPU-Z reports wattage in the 260 area.

1050/1500 was giving me 1.04Mhash/s with similar power consumption levels, but I found it more economical and comfortable to knock ~40% off power consumption for less than a 20% hit to hash rate.
Quote:
Originally Posted by AlphaC View Post

Only data is sent over the USB cable (blue) and it's not USB pinout (if it was it would be +5V x 900mA = 4.5W more)

See http://hardforum.com/showthread.php?t=1803103

Thanks for the info. I am curious as to why the PCI-E power pins are even given fingers on that riser if they aren't used.

I may have to get one of these myself.
Quote:
Originally Posted by AlphaC View Post

As far as your wattage methodology, someone did that on reddit for their R7 265 and then found that instead of 75W in GPU-Z it was 120W @ wall so it's not exactly accurate.

If this sort of ratio was occurring on my set up it would mean my single R9290X was drawing over 500w at stock clocks in OCCT. This is not what I see at the wall, nor does it even seem possible, especially considering I'm using the reference cooler, and it's stable. That cooler cannot move anywhere near 500w of heat.
Quote:
Originally Posted by AlphaC View Post

I trust that you are verifying it via power meter rather than just going off software so I'll take your word on it.

The software doesn't take into account the +3.3v or +5v current, nor can it measure board power loss prior to the VRMs, but otherwise it doesn't seem far off in the case of the Tahiti and Hawaii parts I've used. I just guestimate away the 3.3v/5v consumption (which is very minimal) and use true input voltage to compensate for the second factor. I've compared these reading with actual consumption figures provided by my kill-a-watt, and they match up well, if I assume 91% efficiency out of my Seasonic 860 platinum. The current reading is also roughly 110% of what my ammeter reads as going through the PCI-E power cables. I assume the difference is being covered by the slot, which I cannot measure directly myself (no powered riser on hand).
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post #124 of 133
Managed to grab the box art from MSI's site

13253462373_12c4066274_b.jpg
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post #125 of 133
Quote:
Originally Posted by routek View Post

Managed to grab the box art from MSI's site

 

Good show! :applaud:

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post #126 of 133
Quote:
Originally Posted by ebduncan View Post

efficiency wise it makes sense to go to ASICs, however it is STILL profitable to mine with a GPU and will remain so for quite some time..... ROI? return on investment?

Clearly if there are better options out there for mining, why would you invest in GPU's in the first place? However for the people who already have the GPU's you might as well keep them mining as long as your turning profit which you can.

Also the ROI on the ASIC's is a few months...... gridseeds don't exactly mine super fast think they advertise 320k/hash for 300$ but they only use 6-7 watts of electric.

Gridseeds hash at ~350 kh/s @ 8 watts in scrypt only mode, you're alitte off on the price as they can be had for $215 a piece. I sold off my GPU farm back in December as it was barely profitable then with my setup and I guess I got a little greedy and sold the cards for $50 more a piece then I paid for them. Reinvested in a preorder of 10x Black Arrow Prospero X-1 (100Gh/s @ 50 watts) 1 TH/s SHA-256 hashing power @ ~500 watts was a better investment to me.

You're right that if you already have a GPU farm it would make no sense to sell for gridseeds, admittedly setting up a gridseed farm vs a GPU farms is going to be a lot more work.
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post #127 of 133
Quote:
Originally Posted by Heracles View Post

Nope DVI will be extinct within the next few years.

For gaming maybe, but I guess everyone lives in their own bubble. Everything outside of gaming, which is the 99%, still uses VGA. Go to a coffee shop, fast food restaurant, commercial buildings and you'll see they all use VGA connections. As a matter of fact many motherboards featuring Intel's latest 8 series chipset have "corporate stable" models that feature VGA, PS/2 connections and PCI slots.
post #128 of 133
Quote:
Originally Posted by routek View Post

Managed to grab the box art from MSI's site

13253462373_12c4066274_b.jpg
LoL! I actually thought that was the actual retail box for a sec. GJ! thumb.gif
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post #129 of 133
Quote:
Originally Posted by barcode71 View Post

For gaming maybe, but I guess everyone lives in their own bubble. Everything outside of gaming, which is the 99%, still uses VGA. Go to a coffee shop, fast food restaurant, commercial buildings and you'll see they all use VGA connections. As a matter of fact many motherboards featuring Intel's latest 8 series chipset have "corporate stable" models that feature VGA, PS/2 connections and PCI slots.

Hmmm, I remember reading an article saying that it is going to be phased out by 2015 at the latest. As far as your point goes VGA is only found on the business oriented motherboards and really old or low end GPU's
post #130 of 133
http://anandtech.com/show/7881/amd-teases-dualgpu-video-card-once-more

It definitely looks like there will be a water-based cooler biggrin.gif
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