How much Kh/s R9 280x Gets? | Bitcointalksearch.org

cryptohunter

legendary

Activity: 2100

Merit: 1167

MY RED TRUST LEFT BY SCUMBAGS - READ MY SIG

Quote from: sitefive on January 01, 2014, 02:13:11 PM

Do you think I could run 3X r9 280x cards on a 900-950w PSU?
each card seems to take 250wats X 3= 750 and I would have about 150w left for the rest of the system.

Really if you can get 7950's so much nicer to work with, i have both types. Some get the 7970 to decent hash/kw and good temps, but most people i have come across like the 7950's more.

Mine run easily at 670kh and much cooler and consume less electricity. The 7970's go to 750kh but i have temp issues and way more problems over all.

wtf amd did not bring out the 280 i have no idea.

dragonhunter

newbie

Activity: 37

Merit: 0

Quote from: sitefive on January 01, 2014, 02:13:11 PM

Do you think I could run 3X r9 280x cards on a 900-950w PSU?
each card seems to take 250wats X 3= 750 and I would have about 150w left for the rest of the system.

http://www.extreme.outervision.com/psucalculatorlite.jsp

Use this tool to calculate approx. W needed.

ChekaZ

legendary

Activity: 1884

Merit: 1005

Quote from: sitefive on January 01, 2014, 02:13:11 PM

Do you think I could run 3X r9 280x cards on a 900-950w PSU?
each card seems to take 250wats X 3= 750 and I would have about 150w left for the rest of the system.

Only if you purchase a good GOLD one. I've had a bad one before - 850W and it couldnt even push out 580W without dying..

sitefive

full member

Activity: 210

Merit: 100

Do you think I could run 3X r9 280x cards on a 900-950w PSU?
each card seems to take 250wats X 3= 750 and I would have about 150w left for the rest of the system.

alivecrypto

sr. member

Activity: 252

Merit: 250

Could any one can tell about full assembling, each and every parts. Please that will be helpfull for newbs like us.

ChekaZ

legendary

Activity: 1884

Merit: 1005

Quote from: sitefive on January 01, 2014, 01:53:17 PM

Quote from: ChekaZ on January 01, 2014, 01:52:11 PM

Got 2x R9 280x -> 720kh/s each at 530W both.

cool,what kind of brand are they? also overclocked?

also What kind of Power Supply do you think would 3x R9 280X need?
I see a good 650w would be good for 2X r9 280x.
but how much would 3 of these cards need?

I've shared my settings here:

http://forum.feathercoin.com/index.php/topic,6396.msg47680.html#msg47680

Got 1050W GOLD PSU.

sitefive

full member

Activity: 210

Merit: 100

Quote from: ChekaZ on January 01, 2014, 01:52:11 PM

Got 2x R9 280x -> 720kh/s each at 530W both.

cool,what kind of brand are they? also overclocked?

also What kind of Power Supply do you think would 3x R9 280X need?
I see a good 650w would be good for 2X r9 280x.
but how much would 3 of these cards need?

ChekaZ

legendary

Activity: 1884

Merit: 1005

Got 2x R9 280x -> 720kh/s each at 530W both.

oroqen

sr. member

Activity: 280

Merit: 250

Quote from: grimrog on January 01, 2014, 01:31:09 PM

Quote from: oroqen on January 01, 2014, 11:58:02 AM

Quote from: grimrog on January 01, 2014, 11:46:52 AM

between 720 and 750, depending how much im doing on the pc. They are running with a 680w bequiet 80+ bronze psu.

these are my settings:

-I 13,13 --shaders 2048,2048 -g 2 --gpu-engine 1070,1070 --auto-fan --temp-target 75

I'm using mostly the same on my Asus Top cards, with 1081v in trixx(1012v in GPUz) and 1030 for gpu-engine.

can i harm them with undervolting? does powertune have any considerable effect?

Undervolting no, just crashes if you take it too far down vrs clock rate. If anything your decreasing your time before failure, lower volts mean lower temps for GPU core and VRMs, not too mention the power savings over 24/7/365 use, the trick is finding a sweet spot your comfortable with, I've read one guy was running at the low end of 1v 960ish core for 670khash. not sure about powertune i'm using -20 and haven't played with it.

grimrog

member

Activity: 84

Merit: 10

Quote from: oroqen on January 01, 2014, 11:58:02 AM

Quote from: grimrog on January 01, 2014, 11:46:52 AM

between 720 and 750, depending how much im doing on the pc. They are running with a 680w bequiet 80+ bronze psu.

these are my settings:

-I 13,13 --shaders 2048,2048 -g 2 --gpu-engine 1070,1070 --auto-fan --temp-target 75

I'm using mostly the same on my Asus Top cards, with 1081v in trixx(1012v in GPUz) and 1030 for gpu-engine.

can i harm them with undervolting? does powertune have any considerable effect?

sitefive

full member

Activity: 210

Merit: 100

What kind of Power Supply do you think would 3x R9 280X need?
I see a good 750w would be good for 2X r9 280x.
but how much would 3 of these cards need?

sitefive

full member

Activity: 210

Merit: 100

Quote from: dragonhunter on January 01, 2014, 12:45:15 PM

2x Sapphire Vapor-X.

C:1080 M:1500

cgminer: -I 13 -g 2 --thread-concurrency 8192

NIIICE!

What kind of Power Supply do you think would 3x R9 280X need?
I see a good 750w would be good for 2X r9 280x.
but how much would 3 of these cards need?

dragonhunter

newbie

Activity: 37

Merit: 0

http://s21.postimg.org/xrt0kcxo7/Untitled.jpg

2x Sapphire Vapor-X.

C:1080 M:1500

cgminer: -I 13 -g 2 --thread-concurrency 8192

thens

newbie

Activity: 55

Merit: 0

Quote from: ?? on ??

http://www.gigabyte.us/products/product-page.aspx?pid=4845#ov

card worth to buy?

I think ASUS and MSI cards can average a bit more but every card is unique
so you will always get slightly different result even with same cards.

I have this gpu in rev. 1.0 and it averages 722kh/s

This guy have a bit better results with rev. 1.0: http://www.youtube.com/watch?v=RnsG0HY_yqg

Also check out this video with rev. 2.0: http://www.youtube.com/watch?v=gVd0zKQ7a8Q

Don't know how he was able to achieve that performance. Only difference between rev. 1.0 and 2.0 should be better cooler on GPU.

thens

newbie

Activity: 55

Merit: 0

Quote from: sitefive on January 01, 2014, 12:19:57 PM

Quote from: CoinPN on January 01, 2014, 12:15:26 PM

Why not r9 290x? Cool

I can buy 2 r9 280x for the price of 1 r9 290x, lol.

What kind of Power Supply do you think would 3x R9 280X need?
I see a good 750w would be good for 2X r9 280x.
but how much would 3 of these cards need?

1000W is fine

sitefive

full member

Activity: 210

Merit: 100

Quote from: CoinPN on January 01, 2014, 12:15:26 PM

Why not r9 290x? Cool

I can buy 2 r9 280x for the price of 1 r9 290x, lol.

What kind of Power Supply do you think would 3x R9 280X need?
I see a good 750w would be good for 2X r9 280x.
but how much would 3 of these cards need?

Amph

legendary

Activity: 3248

Merit: 1070

Quote from: CoinPN on January 01, 2014, 12:15:26 PM

Why not r9 290x? Cool

not optimized for cgminer

dunno about bfgminer, that card should do above 1mh/s

CoinPN

newbie

Activity: 42

Merit: 0

Why not r9 290x? Cool

dasource

hero member

Activity: 821

Merit: 1000

ASUS 280x DCII TOP ~750-760 Kh/s

Jollyburner

member

Activity: 98

Merit: 10

so many

some cards are better than others, all should do 700 KH/s or better.

I have xfx cards that suck, MSI are ok other than fan rattle.

most ppl liking asus, sapphire

try to look up and see the model #s from litecoin mining hardware wiki to see which ones are popular.

Topic: How much Kh/s R9 280x Gets? (Read 2133 times)