Attention AMD Radeon 7950 users... - page 2.

Rjb82

newbie

Activity: 57

Merit: 0

Quote from: chungenhung on April 23, 2013, 11:59:37 AM

Quote from: Rjb82 on April 22, 2013, 03:23:03 AM

16384 concurrency, 256worksize.
Gigabyte WF3, Voltage locked.

https://imageshack.us/scaled/large/89/680x.jpg

Before anyone asks, it runs those settings 24/7. i forgot to take the SS before restarting cgminer. Roll Eyes

What about clock speeds?

/points to the green box in the screenshot.

chungenhung

legendary

Activity: 1134

Merit: 1005

Quote from: Rjb82 on April 22, 2013, 03:23:03 AM

16384 concurrency, 256worksize.
Gigabyte WF3, Voltage locked.

Before anyone asks, it runs those settings 24/7. i forgot to take the SS before restarting cgminer. Roll Eyes

What about clock speeds?

bitman442

full member

Activity: 142

Merit: 100

I actually switched over to LTC mining because I found that I can run my card at 1000/1425 with only 1.05V and still get 580 kh/s. That was with minimal tweaking so I still need to see if I can drop it more. At least now I won't have to worry about our upstairs being 100F in the summer.

Rjb82

newbie

Activity: 57

Merit: 0

Quote from: zargon on April 22, 2013, 10:51:19 AM

Quote from: Rjb82 on April 22, 2013, 03:23:03 AM

16384 concurrency, 256worksize.
Gigabyte WF3, Voltage locked.

https://imageshack.us/scaled/large/89/680x.jpg

Before anyone asks, it runs those settings 24/7. i forgot to take the SS before restarting cgminer. Roll Eyes

what version of cgminer?

I cannot get it running on one of my rigs

some of the shell commands under win7 return no such command, and of course cgminer wont work

I have a thor as well....great case

newest. (2.11.4)

an easy way to check if the shell commands are actually working is to check your environment variables. they should show up there. make sure you put the setx in a bat file, it wont work with in with the other cgminer settings.

zargon

newbie

Activity: 18

Merit: 0

Quote from: Rjb82 on April 22, 2013, 03:23:03 AM

16384 concurrency, 256worksize.
Gigabyte WF3, Voltage locked.

https://imageshack.us/scaled/large/89/680x.jpg

Before anyone asks, it runs those settings 24/7. i forgot to take the SS before restarting cgminer. Roll Eyes

what version of cgminer?

I cannot get it running on one of my rigs

some of the shell commands under win7 return no such command, and of course cgminer wont work

I have a thor as well....great case

Rjb82

newbie

Activity: 57

Merit: 0

its a touch low.. because i just restarted cgminer, normally 71-72c.

the 6870 that sits above it isnt helping. The lone 120mm intake is underpowered (air pressure, not cfm). The case is tiny, so airflow generally sucks. Ordering a thor2 this week.

680.1k/683.2k with 339 accepted results. (vardiff bounces around the mid 200's)

Vigil

sr. member

Activity: 378

Merit: 250

Quote from: Rjb82 on April 22, 2013, 03:23:03 AM

16384 concurrency, 256worksize.
Gigabyte WF3, Voltage locked.

Uploaded with ImageShack.us

Before anyone asks, it runs those settings 24/7. i forgot to take the SS before restarting cgminer. Roll Eyes

wow, that is special. You are doing 680kH/s at 68C... I've got to play with my settings some more.

Rjb82

newbie

Activity: 57

Merit: 0

16384 concurrency, 256worksize.
Gigabyte WF3, Voltage locked.

https://imageshack.us/scaled/large/89/680x.jpg

Before anyone asks, it runs those settings 24/7. i forgot to take the SS before restarting cgminer. Roll Eyes

WuNinjaTmp

newbie

Activity: 24

Merit: 0

Quote from: Rawted on April 17, 2013, 08:41:49 PM

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.

Are you home yet?

BBN

member

Activity: 77

Merit: 10

Quote from: rograz on April 20, 2013, 03:39:31 PM

Quote from: BBN on April 20, 2013, 03:11:38 PM

I actually do undervolt my Vapor as stock is 1.250 Shocked

whatever happened with voltage going down when we switched to a smaller process, 5870s were 1.15 and 5970 was even down to 1.05 at stock :p

Its the silly "Boost" feature I guess, the cooling on the Vapor is more than excellent. I have a "reference" 7950 Sapphire 0.981v stock and it has no problems getting to 962 while clocking the GPU at the same time..

NetcodePool

full member

Activity: 147

Merit: 100

Im getting the same 170watt per card.

Edvin512

full member

Activity: 167

Merit: 100

let me just report settings for dual 7950 vapor-x

950core, 1250mem, 0.956volts = 1150 k/hash

415watt at wall, 170watt each card

Thracian

full member

Activity: 140

Merit: 100

Let me just report working settings for me on a SAPPHIRE HD7950 3G GDDR5 (using Trixx)

GPU Clock 1190
Mem clock 1040
VDDC 1.206
Board Power +20

(Sidebar Gadget reports actualy 1.125V, 62W VDDC power, 55 Amp, 59 Celcius at 78% Fan)

This is ok for 24/7 in a 20 Celcius room and gives in Bitminter around 610-615 Mhps
I can give another 10 or 20 Mhz but it becomes unstable.

PC works ok on everyday tasks.
For GPU intensive tasks (eg photoshop) I disabled the GPU hardware acceleration, so that it doesn't interfere with mining

rograz

hero member

Activity: 575

Merit: 500

Quote from: BBN on April 20, 2013, 03:11:38 PM

I actually do undervolt my Vapor as stock is 1.250 Shocked

whatever happened with voltage going down when we switched to a smaller process, 5870s were 1.15 and 5970 was even down to 1.05 at stock :p

BBN

member

Activity: 77

Merit: 10

I actually do undervolt my Vapor as stock is 1.250 Shocked

rograz

hero member

Activity: 575

Merit: 500

Quote from: BBN on April 19, 2013, 04:27:02 PM

I wish LTC was nice with undervolting...

im running scrypt, cards can do about 25-50MHz higher on same voltage mining BTC but there is still a lot of room for undervolting with scrypt.

glendall

legendary

Activity: 2156

Merit: 1018

Buzz App - Spin wheel, farm rewards

Quote from: Rawted on April 17, 2013, 08:41:49 PM

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.

Holy crap really? Nice work. I have to get tweaking my own it seems... Have been pretty happy just at around 590 for scrypt...seems I have some work ahead of me tonight...

edit: Please post your cooling used as well when you show the settings tonight. Thanks.

BBN

member

Activity: 77

Merit: 10

I wish LTC was nice with undervolting...

rograz

hero member

Activity: 575

Merit: 500

Most fans will die at 100% very quickly, if you plan on running the cards for longer than 2-3 months then just don't. You will just have downtime switching out the fans and like it was said before density > max MH/card unless you have free power in unlimited amounts and don't have to worry about the heat output at all. If you are just running your gaming machines in your parents basement then sure go ahead OC that thing to hell and have it pull 350W/card. Try running 25-30 cards + at those conditions for a longer period of time and you will start running into problems.

Ive even taken my cards down to 0,875V just so I can fit 6x7950s on a single 1KW psu.

BBN

member

Activity: 77

Merit: 10

Quote from: Edvin512 on April 18, 2013, 08:47:23 PM

100% fan is guaranted to fuck it up very fast

Life Expectancy of the FAN is always calculated at 100% as is with all fans. Running below that line will simply extend the expected life span. I guess changing the fan on the GPU is easier than getting a new GPU

Topic: Attention AMD Radeon 7950 users... - page 2. (Read 65527 times)