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

[Oldminer]

Dusty Heatsink.

Mining's a dusty business.

[1715389349]

1715389349

[1715389349]

1715389349

[1715389349]

1715389349

[DonDe]

As requested:

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



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

Dude, you will kill your cards keeping them in that box.. Seriously I highly recommend you use PCIE raisers. I have 3 gigabyte 7970s all on raisers - non powered (there is no reason to buy powered raisers, GPU get enough power from Pin cables). Cards run at 1.256V and hottest gets to 82C during the hot day.

[Aurum]

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

What's the logic of using "-s 2 --expiry 1 --queue 0"

[nexus99]

I can get up to about 550 on my Sapphire 7970. @1499, 82, and 20992.

Gotta figure something else out.

If I push memory past 1700 I get a blank screen.

[illpoet]

if i was a gpu and i had emily scott watching me i'd mine faster too.

ps you have the exact same full tower case as me! i love that one, it impresses all the non nerds taht come to my house! its a beast!

[LostDutchman]

In my experience Sapphire is junk.

A Gigabyte 7950 will hash more consistently at 660-680 than any 7950 ever built.

My $.02.

[hendo420]

In my experience Sapphire is junk.

A Gigabyte 7950 will hash more consistently at 660-680 than any 7950 ever built.

My $.02.

I have had my sapphire rig (3x 7950s) running non stop for over a month without reboot. All cards doing ~680kh/s and I'm also getting about 20kh/s out of the APU and mining primecoin on the APU also.
I haven't even restarted CGminer in that month. Its rock solid.

My XFX rig on the other hand...(3x 7950s)
My cards top out at 620kh/s and requires an automated reboot every 6 hours to keep it from displaying dead for one of the cards. Oh and one of my XFX cards had a fan die, waiting on xfx to get back to me on that but somehow its still only topping out at 78c. All i can say is this round "box" fan I have on the XFX rig is AWESOME.

[richtrix]

I've had several XFX 7970 fans go on me. If yours are just kind of sticky and won't spin I use some teflon spray I got at Lowes and it brought them back to life, like new. Also used a product that is a little more specialty called  de-oxit, which is for electronics cleaning, also did the trick once when my teflon spray wasn't handy. Now a little teflon spray periodically is standard procedure for routine maintenance.