Sapphire Vapor-x Ghz 7970 Litecoin Mining 800Kh/s

[Spetznaaz]

**EDIT - I do not think these settings are stable, after about ten hours GPU 0 reports as "DEAD" - Thus I wouldn't recommend using them. I will try and sort the problem when i get a chance and update.**

So i managed to get my 7970 up to 800Kh/s, stable so far, and thought i would share.

I'm not sure if the extra Kh/s is worth the extra wattage - i am going to order an electricity meter so i can find out what it draws and i'll update once i have.

If you have a Vapor-x 7970, and haven't yet flashed the BIOS - Check my other thread out first:

https://bitcointalk.org/index.php?topic=200777.msg2095364#msg2095364

GPU Voltage        1187mV
GPU Clock           1135Mhz
Memory Voltage   1600mV
Memory Clock      1840Mhz

Fans Auto

cgminer --scrypt -o yourpool -u username -p password -s 2 --expiry 1 --queue 0 --thread-concurrency 20992 -I 13 -w 256 -g 2

Screenshot:

http://s14.postimg.org/ll0pvjech/Untitled.png

The reason my other 7970 is running at 720Kh/s is due to the fact its airflow is restricted by the first card and therefore gets too hot for my personal taste. I have a PCI-e riser in the post to fix this.

[ronaldinho_07]

my pcs 7970 can get about 740Khash with 1050/1250Mhz and voltage is 1.06 in afterburner,it drops ~ 1volt in GPUz

[Spetznaaz]

Yeah i can get 740Kh/s with much lower settings - As i say i'm not sure if it's worth the extra wattage, but i'm just showing it can be done relatively easily, and with decent heat. Once i get the wattage meter i'll work out whether it is in fact worth doing and update.

[sikman]

very nice work there

what driver version are you using and sdk?

[Spetznaaz]

Cheers

Catalyst 13.2 Beta 7 and SDK v2.8

[Aion2n]

So sexy 

[Spetznaaz]

So sexy 

Haha Yeah she is a fitty. Makes it easier on the eyes when i'm staring at CGminer all day

[Hydroponica]

Would you mind moving Afterburner, slightly to the left?

[cooltobe]

Would you mind moving Afterburner, slightly to the left?

+1

i'm with a new screenshot

[Spetznaaz]

Would you mind moving Afterburner, slightly to the left?

+1

i'm with a new screenshot

Hahaha wasn't sure what the rules are

[Luckybit]

My Sapphire Vapor X 7970s were running too hot. I had to shut down one of them because it was going up to 95c. It runs okay with two of them around 85c each but its still unstable.

How do you keep them cool? I'm getting around 666-700khash each.

[iANDROID]

Could you post a picture of your mining rig?

[iAmAYacoin]

Nice rig..

If you know what I mean!

[Spetznaaz]

My Sapphire Vapor X 7970s were running too hot. I had to shut down one of them because it was going up to 95c. It runs okay with two of them around 85c each but its still unstable.

How do you keep them cool? I'm getting around 666-700khash each.

Hmmm, you used all those voltage settings yeah? and fans on auto?

And you've flashed the BIOS? And using all the settings i put on the other thread, and setting max allocation gpu..?

If the answer is yes to all of those, then i am very confused why your temps are so hot and hash rate is so low.

Also don't forget you may need to adjust your GPU speed slightly as all GPU's are different (apparently).

Could you post a picture of your mining rig?

Yeah will do when i get a chance

[Spetznaaz]

As requested:

http://s10.postimg.org/xyzqpkmbt/20130512_165809.jpg



http://s13.postimg.org/uhn13eymv/20130512_165903.jpg

[iANDROID]

Dusty Heatsink.

[Spetznaaz]

Dusty Heatsink.

It get's like that in a day

[Spetznaaz]

So i fell asleep and when i woke up GPU 0 displayed as "DEAD".

I may of jumped the gun a bit. I'm going to leave it on overnight and see what the situation is in the morning.

[broken_pixel]

7970s with -g 2 need -I 13 --thread-concurrency 8192 or you will get HW errors and sick or dead gpu mining. Core and Memory Clock ratio is key to high hash.

[Charles999]

dang what am i doing wrong!! i can't get to consistently go over 625mhs