7850/7870 LTC performance

[p00chie]

My friend got 4x 7850 1gb and still have 400 kh/s with 1150/1250, and me with 2gb version just 360 kh/s... o.O

when you get more hashes with lower core clock you have to find the best ratio between core/clock. If you found the sweet spot try to increase both values that you will remain the ratio

[jayjay2244]

GUIminer sapphire OC edition 2gb i get 320 KH/S with default high settings @ 16 intensity. However OCing without overvaulting i got upto 370

[polymyxa]

Hey,

I'm using the gigabyte GV-R787OC-2GD. I bought it from microcenter for 250$. It is very easy to use - compared to my 7970 cards.
Hashrate: 450 kh/s (scrypt)
I run it with 1.1 mV instat of 1.219V (?) (msi afterburner).
CGminer 3.11
I: 19-20
thread currency: 24000
shaders: 1280
enginge: 1080
memclock: 1435
The temperature is usually 68-71C (card is directly above my power supply, but no other card is next to this one)

[iGotSpots]

Wow thank you so much man. Been struggling forever to get more than 280 hash a sec, your settings are getting me 350!

Wait wait.. no.. I'm getting HW..

--thread-concurrency 8192

Increase the number if you want to, that's just the number I use for my 6950 miners

[pr0d1gy]

Hey,

I'm using the gigabyte GV-R787OC-2GD. I bought it from microcenter for 250$. It is very easy to use - compared to my 7970 cards.
Hashrate: 450 kh/s (scrypt)
I run it with 1.1 mV instat of 1.219V (?) (msi afterburner).
CGminer 3.11
I: 19-20
thread currency: 24000
shaders: 1280
enginge: 1080
memclock: 1435
The temperature is usually 68-71C (card is directly above my power supply, but no other card is next to this one)

$250 at micro? return that shit. mine was 209 with a $10 rebate. Tell them to match price, and get difference. or Get it from frys.... (if you can)