Optimal Saphire 7870 OC Edition Tuning (Pitcairn)

rdk5

newbie

Activity: 2

Merit: 0

oh dang alright sorry about that!

grache

newbie

Activity: 14

Merit: 0

Thanks for the response. Unfortunately those settings gave me a hashrate of 0, and I had to reboot :|

Must be that each card needs different settings :/

I think I'll just have to settle for 390 for the moment, I've spent way more time than the extra 20 hash is worth.

rdk5

newbie

Activity: 2

Merit: 0

Hey there I've been mining for a couple of weeks now and having been constantly messing with the settings. I have one Gigabyte 7870 Ghz Edition card (Pitcairn)( Model#GV-R787OC-2GD) and using GUI-miner--scrypt. I got a stable k/hash at 419. Here are my settings listed below and a picture to go along as proof.

GPU Settings

GPU Clock -1005MHz
Memory Clock - 1375MHz
Fan - Auto
Voltage - 1.204

GUI-Miner scrypt Settings

Thread concurrency: 8192
Vectors: 1
GPU threads: 2
Worksize: 256
Intensity: 19

LTC Donations Here Cheesy

Thank You!
LZcNgKghxvTSL9aAmXWKUi43ZbXjuSUFdi

http://s29.postimg.org/rpj7rl7dj/IMG_2406.jpg

grache

newbie

Activity: 14

Merit: 0

I'm having a bit of trouble tuning my two Saphire 7870 OC Edition, which is a Pitcairn not a Tahiti. I've seen that others are getting as high as 420 on their Pitcairns, but I haven't been able to find their exact config.

I'm getting ~380k each, but my WU are pretty low, at 259 and 280. Here's the output from cgminer:

cgminer version 3.4.3 - Started: [2013-12-03 06:09:26]
--------------------------------------------------------------------------------
(5s):707.2K (avg):757.7Kh/s | A:54284 R:1228 HW:248 WU:540.1/m
ST: 1 SS: 0 NB: 50 LW: 610 GF: 0 RF: 0
Connected to stratum.mypool.com diff 215 with stratum as user myuser.x
Block: 8eed9c63b68cdb8c... Diff:114M Started: [07:46:17] Best share: 81.5K
--------------------------------------------------------------------------------
[P]ool management [G]PU management [S_]ettings [D]isplay options [Q]uit
GPU 0: 58.0C 2542RPM | 380.7K/380.2Kh/s | A:24901 R:494 HW:143 WU:259.6/m I:20
GPU 1: 58.0C 2591RPM | 380.3K/377.8Kh/s | A:29383 R:734 HW:106 WU:280.5/m I:20
--------------------------------------------------------------------------------

Here's a copy of my cgminer.conf:

{
"pools" : [
{
"url" : "stratum+tcp://stratum.mypool.com:3333",
"user" : "myusername.x",
"pass" : "mypass"
}
]
,
"intensity" : "20",
"vectors" : "1",
"worksize" : "256",
"kernel" : "scrypt",
"lookup-gap" : "2",
"thread-concurrency" : "11520",
"shaders" : "1024",
"expiry" : "120",
"auto-fan" : true,
"gpu-dyninterval" : "7",
"gpu-threads" : "1",
"gpu-powertune" : "-5,-5",
"gpu-engine" : "900",
"gpu-memclock" : "1250",
"gpu-fan" : "65",
"log" : "5",
"no-pool-disable" : true,
"queue" : "0",
"scan-time" : "30",
"scrypt" : true,
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

I'm gonna give a tip of the extra earnings for 10 days to anyone who can help me increase my hashrate.

Topic: Optimal Saphire 7870 OC Edition Tuning (Pitcairn) (Read 847 times)