Bitcoin Forum

Powercolor Devil 13 7990.
Link to Album with actual voltage measurements. http://imgur.com/a/kFqHC#2 (http://imgur.com/a/kFqHC#2) The real voltage is 0.944 while afterburner shows 1.000 http://imgur.com/a/kFqHC#0 (http://imgur.com/a/kFqHC#0)
Power consumption is ~300W (925MHz E, 777MHz M) for the card. Whole system is 433W.
https://i.imgur.com/MxWidh.jpg
https://i.imgur.com/zIYvhh.jpg

Another album, with a 7950 for size comparison.

http://imgur.com/a/wMclN (http://imgur.com/a/wMclN)

https://i.imgur.com/KXYA0h.jpg

And the Mhash sir? DO we have to donate to get that number

Mh/s would be great :)

One question: Why?  Unless I'm missing something, this has no place in mining.  A year ago maybe, but not now. 

Bragging rights?  Gaming?  Had $1000 (or equiv) sitting around burning a hole in your (virtual) pocket?  Think it's going to be a cold winter, needed an extra heat source?

I'm sure it looks nice.. would I want one?  No..

M

wow that thing looks beastly!

Sexy Card, im still hoping on getting one. Did you have any fitment issues like the techpowerup review ?

It's huge, much bigger than than a reference 7970. Will not fit inside most ATX cases without some elbow grease and a dremel. One more issue (maybe it's system specific) is the inability to tweak the voltage of second gpu. MSI afterburner can tweak voltage of the first Tahiti chip but not the second (/stuck at 1.17V).

Sent you a bitcent now gimme MHASH!!!!!

My bad, i was meaning fittment issues with the heatsink not contacting GPU's.

Thanks for the pic btw.

Depends on the cost of electricity and resale value.  If it hashes at 1.3 Gh/s and makes 5 USD a day and you can resell it next month for $900, then you made $50.  Assuming your power costs are low.  Would I buy one? No.  Is it cool?  8) yes.

OR?! Maybe people that are buying it think ASIC is a lie and are hedging their bets on them not actually being released.  /fud

Does it get that 1.3Ghash/s?

maybe it gets 3ghash and thats why hes keeping it hush hush

3GH/s still wouldn't be worth the 999 price tag. :P

yeah it would.

bfls ingle 820MHASH, for $700

So 30% of the hashrate for 70% of the price and (I'm guessing here) 400% power draw? How is this worth it?

if you click on the link for pictures you would see it hashing away at 550mh/s per gpu 1100mh/s total

That sounds about right for a 7970 @ 925MHz. Bump them to 1100, and you could get 1200mh/s.

power draw of only 300 watts while hashing? seems quite low

Bragging rights.

fuck me

I bet it runs at 80c in good conditions, that fan style is not good. The cgminer pic looks like it just got turned on.

WTF IS THE MH/S!?!?!

my guess is 1000-1200

I can get 600 when pushing my 7950 at 1150/500...

That's a 7950. This is 2x 7970s, which gets 550MH/s per core at 925MHz, which is exactly what was expected. Switch to the alternative BIOS, which OCs to 1000MHz, and you should get almost 600MH/s.

Pic from the Imgur in the first post: http://imgur.com/a/kFqHC#1
https://i.imgur.com/zIYvhh.jpg

Nice monitor!

Huh?

The pixels are very small and close togeather

Dude has a 7990...and a PATA dvd rom? Can I donkey punch him for that? Or did he save all his upgrade money for the past 10 years for the 7990 and couldn't afford a new DVD-rom? What decent motherboard even comes with PATA anymore?

ZOMF FAKE PHOTO IS FAKE.  OCL drivers talk to the device level bridge chip, not to the two individual 7970 component subsytems. 

Holy hell Niceee

Huh? On my 5970s they showed up as GPU0 and GPU1, very similar to what that pic looks like.

Yeah two cores will show up seperately for dual GPU cards.  Seeing as how my 5970s get ~360 each at 810 core, coupled with architectural and clock improvements, this sounds very reasonable to expect (550 per core).

7990 in stock Newegg

7990 http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483 (http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483)

Devil 13 http://www.newegg.com/Product/Product.aspx?Item=N82E16814131479 (http://www.newegg.com/Product/Product.aspx?Item=N82E16814131479)

alright just waiting for sub-'an arm and a leg' price

Running 2 7990 cards. These look like made of binned 7970, the ones with the lowest heat dissipation at given voltage / speed. They can be nicely overclocked in an open case to around 1100Mhz in a cool room ~70F. At 70 - 80F these are happy to run at 1GHz. The voltage of one core is adjustable but another core is locked (unfortunately). Speeds of both cores are adjustable. 

And suddenly, GPU mining is profitable again...
:)

LTC mining! This is a great LTC card as well.

I went and bought 2 of those 7990. They are very nice hardware, easy to fit 4 GPUs in to somewhat normal box and just leave the sidepanel open for the heat to escape.

And there are some benefits of 7990s in gaming too  ;)

No wonder they are OOS at newegg
http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483&Tpk=7990&IsVirtualParent=1 (http://www.newegg.com/Product/Product.aspx?Item=N82E16814131483&Tpk=7990&IsVirtualParent=1)

I looked at 7990s over 7970s last night, it doesn't make sense to me.

ROUGHLY same power consumption, ROUGHLY same max OC, same hashing power at same clocks.

But 2x7970s £560 and 7990 costs £730+ if you can find it. Even factoring in reductions in 'specialist' motherboard requirements for the equivalent of 4 cards, and case requirements, it doesn't come close to paying for itself.

I'm still buying 7970's... if the official 7990 comes out, I'll buy that too and sell these 7970s...

Until ASICs are available for purchase in quantities... GPU mining for BTC (and especially LTC) is a viable option.

Higher resale value?   I just picked one up..

M

Also another reason for 7990s is the increased density.

No you're not going to beat FPGA's and ASIC's on the power front, but these GPU's are way easier to obtain. And if you're electricity costs are low enough you can stay in the game with GPU's far longer than those who suffer the cost issues of running them.

Litecoin mining, for example

Yeah I ate my words, swapped 4x 7970s for 2x 7990 and a 7970 :D

Thanks again for the free power, landlord.

what are you hashing at?

So the e-peen contest has begun, if I glue 3x7970 together will you buy that for $2000 as well? (premium goes up per card ofc)

How are you getting higher density? Are you going to run more than 3 of them in 1 rig? are you going to run them in a rack? If not then get 6x7950/7970s and have the same density. The only density that matters is mh/rig, mh/card is irrelevant.

For every 7990 you buy you could have had 3.5-4x7950s depending on at what price you can find them, how does it make any sense to pick the 7990. Even counting the extra motherboard requirements etc you would still be looking at 3x7950 vs 1x7990 price wise. Justify that please, all I get when I have asked is "it's my money and I can do what I want"
 

I think it should be noted that this Devil 13 is a 3 slot 7990, the newest 7990s are 2 slot and they OC and cool better.

this Devil 13 is at 925mhz stock.  (3 slots)

the new 7990 are 950mhz stock and oc to ~1100mhz @ 80C. (2 slots)

link please

Are the Malta's any different with mining / Power ?

my malta does 375w for the card, 1100-1250mh/s


576mh/s per gpu @ 1000mhz per gpu (stock speed) so thats  1152 mh/s running stock speed.

Pretty efficient on power usage.  

density also mean less space occupied, less cumbersome, more in the same place