|
Title: What is the best 7950 card for mining? Post by: noxbayou on May 17, 2013, 02:36:38 AM I have two sapphires, but I'm concerned that I made a bad purchase. Does matter which ones I use if I use powered risers?
Title: Re: What is the best 7950 card for mining? Post by: miningdude on May 17, 2013, 03:06:19 AM Model numbers are a good identifier. Not all 7950s are made equal. I get 600+ on my Sapphires and recommend them in my build guide at http://www.coinminingrigs.com. Do you have them set up and mining yet?
Title: Re: What is the best 7950 card for mining? Post by: ManBearPig on May 17, 2013, 07:55:41 AM My 7950 Windforce 3GB OCs manage 610-630 kh/s each and I don't overclock or undervolt.
Title: Re: What is the best 7950 card for mining? Post by: testsieger on May 17, 2013, 08:01:21 AM Do you mean a 7970?
Title: Re: What is the best 7950 card for mining? Post by: nookiegirl on May 17, 2013, 11:42:03 AM Do you mean a 7970? He's talking about Litecoin and I guess 7950 is rightTitle: Re: What is the best 7950 card for mining? Post by: glendall on May 17, 2013, 02:04:47 PM Gigabyte Windforce 7950.
I have one and also get over 600 with scrypt. Best card of the three models I have. Not sure if the prices are the same for you, but often, for non-stock models, this card was also the least expensive, making it an easier choice. ...and if you have been won over yet, this video card is also fantastic as it has no plastic shroud covering on the top of the card, making it really easy to mount a fan directly on top, pushing air through the card's cooling fins... Title: Re: What is the best 7950 card for mining? Post by: miningdude on May 22, 2013, 10:00:20 PM My 7950 Windforce 3GB OCs manage 610-630 kh/s each and I don't overclock or undervolt. While undervolting isn't required, if your card can handle it, you'll save a bundle on your electric bill (unless you are lucky enough to get free power). :) Title: Re: What is the best 7950 card for mining? Post by: notaek on May 22, 2013, 10:08:46 PM Gigabyte Windforce 7950. I have one and also get over 600 with scrypt. Best card of the three models I have. Not sure if the prices are the same for you, but often, for non-stock models, this card was also the least expensive, making it an easier choice. ...and if you have been won over yet, this video card is also fantastic as it has no plastic shroud covering on the top of the card, making it really easy to mount a fan directly on top, pushing air through the card's cooling fins... The lack of a shroud has been a life saver for me. Temps stay really cool even with 4 of them sandwiched together because I can just put fans on top. Title: Re: What is the best 7950 card for mining? Post by: pekv2 on May 22, 2013, 10:41:02 PM https://bitcointalk.org/index.php?topic=186651.msg1934011#msg1934011
& https://bitcointalk.org/index.php?topic=187340.msg1940292#msg1940292 & https://bitcointalk.org/index.php?topic=179218.0 Title: Re: What is the best 7950 card for mining? Post by: Veldrik on May 22, 2013, 10:42:46 PM My 7950 Windforce 3GB OCs manage 610-630 kh/s each and I don't overclock or undervolt. I also use Gigabyte cards.7870 OC latest rev 7950 WindForce revision 2. (windforce is the non OC version - same fan as the OC, yet comes at a lower clock) 7950 Windforce Revision 2 from Gigabyte do not come on reference 7950 PCBs though, they come on a 7970PCB. Mine all happy overclock - but I do underclock the ram to reduce temperature and save around 20watts per card down to 300 or 310mhz. My 7870s pull up to 550mhash (I mine bitcoins) and my 7950s gather up to around 650mhs. However as I like to run at around 60*C, I have them auto tune and they run at 400 and 550mhash respectively. Title: Re: What is the best 7950 card for mining? Post by: Hippie Tech on May 23, 2013, 12:08:11 AM My 7950 Windforce 3GB OCs manage 610-630 kh/s each and I don't overclock or undervolt. I also use Gigabyte cards.7870 OC latest rev 7950 WindForce revision 2. (windforce is the non OC version - same fan as the OC, yet comes at a lower clock) 7950 Windforce Revision 2 from Gigabyte do not come on reference 7950 PCBs though, they come on a 7970PCB. Mine all happy overclock - but I do underclock the ram to reduce temperature and save around 20watts per card down to 300 or 310mhz. My 7870s pull up to 550mhash (I mine bitcoins) and my 7950s gather up to around 650mhs. However as I like to run at around 60*C, I have them auto tune and they run at 400 and 550mhash respectively. 550 mhash/s on a 7870 ?! :o Settings plzzzz. Title: Re: What is the best 7950 card for mining? Post by: nwoolls on May 23, 2013, 01:53:09 AM The Sapphire 7950 seems cheapest and works great in my experience. 1185 core, 300 mem, 1.08V, 75% fan, 60C & 610 Mh/s. Around $280-$300 on Amazon or Newegg, plus rebates & free games.
Title: Re: What is the best 7950 card for mining? Post by: Hippie Tech on May 23, 2013, 02:57:21 AM When you're spending that much $$$ the MSI non ref gpus are well worth the little bit extra for the better cooling, components, and 1 extra year on the warranty. Also, removing the heatsink will not void the warranty unless you damage the pcb or hsf.
Every Sapphire gpu I've seen has turned out to be a heatbag even with an aftermarket cooler installed. The DualX coolers on my Gooo.. XFX, Msi, Asus and Gigabyte. ;D Title: Re: What is the best 7950 card for mining? Post by: greaterninja on May 23, 2013, 03:06:25 AM take notes...67C, 516-525MH/S on a PowerColor 7870 XT undervolted -20%, please note my ram is at 100mhz...it drastically reduces temperatures.
https://i.imgur.com/DgHWJqv.jpg Title: Re: What is the best 7950 card for mining? Post by: Hippie Tech on May 23, 2013, 04:14:58 AM Very nice Greaterninja. ;)
I've had one of mine up to 1225/750, stock volts/power limit which gets me 530 mhash/s. I'll need some cooler weather or better cooling on the vrms to know if its 24/7 stable. 1200/750 is. lol http://img.techpowerup.org/130521/1482 mhashs.jpg Title: Re: What is the best 7950 card for mining? Post by: Hippie Tech on May 23, 2013, 06:41:02 AM I have two sapphires, but I'm concerned that I made a bad purchase. Does matter which ones I use if I use powered risers? I get 635 Mh/s (1250/50) and 600 kH/s (1100/1550). Nothing wrong with those cards. I didn't mean to totally trash Sapphire. I should have said, "surprisingly stable heatbags". ::) No probs with my Sapphires. It just bugs me seeing them and others, skimp out with the cooling solutions. The 28nm process made huge gains when it comes to thermal efficiency and Sapphire knows that. So when tech support tells me, "80C+ is acceptable", I can't help but feel a little insulted and ripped off. Anything running at 80c or more, day in day out is a borderline fire hazard and should be recalled. Title: Re: What is the best 7950 card for mining? Post by: Hippie Tech on May 23, 2013, 06:04:26 PM @Greaterninja Have you tried the -f1 flag on the gpus without a display ?
Title: Re: What is the best 7950 card for mining? Post by: Hydroponica on May 23, 2013, 10:37:04 PM Gigabyte Windforce 7950. I have one and also get over 600 with scrypt. Best card of the three models I have. Not sure if the prices are the same for you, but often, for non-stock models, this card was also the least expensive, making it an easier choice. ...and if you have been won over yet, this video card is also fantastic as it has no plastic shroud covering on the top of the card, making it really easy to mount a fan directly on top, pushing air through the card's cooling fins... This. I just got one today, and it's pumping out 600 KH/sec, on Stock speeds. Title: Re: What is the best 7950 card for mining? Post by: mika1977 on May 24, 2013, 05:31:30 AM My 7950 Windforce 3GB OCs manage 640-660 kh/s each, and I have overclock them 1200/1850@1.225v/1.575v., temps up to 62 - 64, custom profile fan around 60-70%
Title: Re: What is the best 7950 card for mining? Post by: jayeeyee on May 24, 2013, 05:56:27 AM My Sapphire 7950s 3L models get 660kh/s for Litecoin. On Bitcoin, I'm sure I can squeeze a bit more juice out of it... however, I haven't tested that claim yet.
Settings are: 1100/1500 @ 1.169 - Steady temps 67c @ 70% fan speed (30xx rpm) Title: Re: What is the best 7950 card for mining? Post by: kinitex on May 24, 2013, 10:41:10 AM Msi twin frozr has been the best for me. Very easily does 650kH/s with light ocing and undervolting. Runs cool too
Title: Re: What is the best 7950 card for mining? Post by: Gator-hex on May 24, 2013, 12:36:11 PM I just bagged a deal on several Gigabyte 7950 (900Mhz OC) + 4 games for £199.99 (Equivilent of $299.99)
The games were Crysis 3, BioShock Infinite, Farcry 3 Blood Dragon, Sim City! http://www.hotukdeals.com/deals/gigabyte-ati-radeon-7950-199-99-dabs-1558948 Hoping I can make some money back selling the game codes too! :D Title: Re: What is the best 7950 card for mining? Post by: noxbayou on June 09, 2013, 04:22:48 AM Model numbers are a good identifier. Not all 7950s are made equal. I get 600+ on my Sapphires and recommend them in my build guide at http://www.coinminingrigs.com. Do you have them set up and mining yet? I do not have them up and mining. My wife does not want a milk crate set up. She is concerned that my 4yo will get into it. So, I'm going to order a haf x cooler master, otherwise I'm going to follow the guidance for to graphics cards shown on your website. Thank you for putting that up by the way. |
