cgminer help 7870

[crazyearner]

Ok as topic says I need some help getting this GPU past the 290kh/s area.

-I will not mine past 12 and will get nothing but HW errors. Increasing GPU engine will increase kh/s but only minimal. Increasing memclock does not increase speeds at all taking from stock upto max of 10 to 30% no results no improvement on speeds.

Have had a replacement on as thought it was a defective GPU and still this is the same with the replacement. --thread-concurrency 7680 also tried higher and lower making no odds also tried shaders at 1280 as that is the card shaders and processing units still not joy...

Tried ATI drivers 11.11   12,13 and also 13.1 and SKD 2.6 2.7 2.8

Tried almost every cgminer thier is and latest version, BFG miner, Reaper making no different to what am doing.

Can some help with getting this card up to speed. Have seen many people on here posting theri speeds and I  followed a lot of guides and still its liek talking to a brick wall with this GPU lol...

Am open to any help and advise given and settings to try out and also offering a reward in LTC or FC if person or persons can solve my mining problem on this GPU.

Almost forgot Windows 7 x64 8GB ram CPU AMD 8core

[phluxx]

First of all, I assume you're using the default Phatk kernel in CGMiner.  Switch to Diablo.

When you say "I will not mine past 12," I don't get what you're saying.  12 intensity?  Mine anywhere from 9-14 with these.  I mine at 9 on two Gigabyte 7870OCs, and 14 on an MSI 7870.  

I get about 460Mhash on all 3.

2x Gigabyte:
Vcore = 1.275
Fan = 85%
Engine = 1220Mhz
Memory = 625Mhz
Intensity = 9
Kernel = Diablo

1x MSI:
Vcore = 1.275
Fan = 85%
Engine = 1240Mhz
memory = 625Mhz
Intensity = 14
Kernel = Diablo

[crazyates]

First of all, I assume you're using the default Phatk kernel in CGMiner.  Switch to Diablo.

When you say "I will not mine past 12," I don't get what you're saying.  12 intensity?  Mine anywhere from 9-14 with these.  I mine at 9 on two Gigabyte 7870OCs, and 14 on an MSI 7870.  

Don't listen to him. It sounds like you're mining LTC, which all of his settings are for BTC. You really ought to specify that either in the title, or your post somewhere.