Attention AMD Radeon 7950 users... - page 3.

Slix313

newbie

Activity: 14

Merit: 0

Quote from: VacantPaper on April 17, 2013, 06:51:20 PM

*NOOB WARNING: Do not attempt to overclock your graphics card if you don't know what your doing! It voids any warranty you have on it, and can break the card if you do it wrong.*

Which manufacturer is the card your using for this and what the wattage use?

Edvin512

full member

Activity: 167

Merit: 100

100% fan is guaranted to fuck it up very fast

Bitsaurus

hero member

Activity: 873

Merit: 1007

Quote from: bitman442 on April 17, 2013, 11:07:57 PM

Quote from: jjiimm_64 on April 17, 2013, 10:39:09 PM

Quote from: rograz on April 17, 2013, 08:32:28 PM

I prefer running mine at 900MHz@0,95V tbh (scrypt, can probably do 0,9V at same speed mining btc)

+1. half the power. half the heat. half the down time. card will live 4 times as long!!!!!

It depends on why you are mining. I'm not mining for profit at today's prices, I mine in hopes that someday they will be worth a whole lot more. When that happens I don't want to look back and think of how many more coins I missed out on to save a few bucks on my electric bills. If I were mining to sell and profit right now, then yes power efficiency would be a huge factor.

This may sound like a stupid question, but why would you buy a 7950 and underclock it so much instead of buying a cheaper card like a 7870? Also, what type of hashrate are you getting at those speeds?

Back in 2011 we had hundreds of threads on this. Getting more hash/watt often means more density. Instead of being able to put 300 cards in a room you can put 500. The cards might be negligible in comparison to electricity and rent for farms

bitman442

full member

Activity: 142

Merit: 100

Quote from: jjiimm_64 on April 17, 2013, 10:39:09 PM

Quote from: rograz on April 17, 2013, 08:32:28 PM

I prefer running mine at 900MHz@0,95V tbh (scrypt, can probably do 0,9V at same speed mining btc)

+1. half the power. half the heat. half the down time. card will live 4 times as long!!!!!

It depends on why you are mining. I'm not mining for profit at today's prices, I mine in hopes that someday they will be worth a whole lot more. When that happens I don't want to look back and think of how many more coins I missed out on to save a few bucks on my electric bills. If I were mining to sell and profit right now, then yes power efficiency would be a huge factor.

This may sound like a stupid question, but why would you buy a 7950 and underclock it so much instead of buying a cheaper card like a 7870? Also, what type of hashrate are you getting at those speeds?

jjiimm_64

legendary

Activity: 1876

Merit: 1000

Quote from: rograz on April 17, 2013, 08:32:28 PM

I prefer running mine at 900MHz@0,95V tbh (scrypt, can probably do 0,9V at same speed mining btc)

+1. half the power. half the heat. half the down time. card will live 4 times as long!!!!!

rograz

hero member

Activity: 575

Merit: 500

I prefer running mine at 900MHz@0,95V tbh (scrypt, can probably do 0,9V at same speed mining btc)

bitman442

full member

Activity: 142

Merit: 100

I have mine running at 1.238 Vcore with 1175/900 clocks. I'm using GCminer with intensity set at 10, and the latest beta drivers. I'm getting 618 mh/s steady. The only thing is, I have to go into the Catalyst control panel and set the power control to 20% for it to work at full speed

Rawted

hero member

Activity: 742

Merit: 500

I have 7950s running stable at 670 mh/s (currently scrypt though). They are the new sapphire 7950s that newegg had a special on. i have 4 per rig running at this rate stable. I'll share the settings when i get home.

VacantPaper

newbie

Activity: 28

Merit: 0

Here is what I've done to achieve max hashrate for this GPU. I set the core voltage to 1250, and the core clock to the max of 1200Mhz. Works without crashing. Of course you'll wanna adjust the fan speed too; I personally don't mind the noise, so I have it set to 100% speed when it hits 60C.

This setting gets me 612 MH/s, with the flag "-w 64." And the temperature is the same for me, 76 - 78C while mining for a while.

So if you wanna get another 100 MH/s, this is what ya do. Cheers!

*NOOB WARNING: Do not attempt to overclock your graphics card if you don't know what your doing! It voids any warranty you have on it, and can break the card if you do it wrong.*

Topic: Attention AMD Radeon 7950 users... - page 3. (Read 65540 times)