R9 280x Hash rates

[flasheart]

Finished updating my rig... new pics, specs, config, etc can be found here...

https://bitcointalk.org/index.php?topic=395199.0

[gomez80]

My rig with 2xSapphire R9 280X Vapor-X runs at 2 * 650Kh/s
And the rig with 2xSapphire R9 290 runs at 2*700Kh/s
OS: Kubuntu 13.10
Driver: 13.11 Beta v9.4
cgminer 3.7.2

[Nyan_Coin]

sapphire 280x dual-x getting about 730-740 per card temps are at 68-70

[VariableDiff]

These are basicly oced 7970 cards, so 740 is a must for them.

[verbal]

sapphire 280x vapor x getting 700khash and temp hovering around 68-72

[ManuelJ]

Sapphire 280x, 640 KH/s, but only 150W

[Gazza1]

Very nice setup.  Toxics are great cards.   

[SunnyIgor]

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 

[VariableDiff]

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 

Try to play with the settings, what is your clocks?

[SunnyIgor]

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 

Try to play with the settings, what is your clocks?

1020

[VariableDiff]

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 

Try to play with the settings, what is your clocks?

1020

Most important for scrypt is memory overclock.
You have to find right core/mem clocks to achieve best results. What is your voltage? Can you change it?

[SunnyIgor]

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 

Try to play with the settings, what is your clocks?

1020

Most important for scrypt is memory overclock.
You have to find right core/mem clocks to achieve best results. What is your voltage? Can you change it?

voltage is 1200, i can change it using sapphire trixx

[Sparkzor]

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 

Try to play with the settings, what is your clocks?

1020

Most important for scrypt is memory overclock.
You have to find right core/mem clocks to achieve best results. What is your voltage? Can you change it?

That's incorrect when it comes to both 7950 and 280x.
Sweet spot for 280x and high core clock for 7950, atleast for mine

[edutBTC]

i wanted to config mines so post your config Flunder707 

[Amph]

he pushed his card to 1150 at least, with I 13 -g 2 and thread-concurrency 8192

[AGSTeixeira]

UPDATE: with some more tweaking and a little OC, managed to squeeze 800KH/s from my Asus 280x DC2 TOP

[btminer8]

600khs for MSI 280x using only 70watt of power

[sesko]

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 

Try to play with the settings, what is your clocks?

1020

Most important for scrypt is memory overclock.
You have to find right core/mem clocks to achieve best results. What is your voltage? Can you change it?

i have 2 sapphire r9 280 x vapor, only 600 KH/s max.
 

Try to play with the settings, what is your clocks?

1020

Most important for scrypt is memory overclock.
You have to find right core/mem clocks to achieve best results. What is your voltage? Can you change it?

Vapor-x r9 280x, easy 730-740 kH/s

Setup Sapphire trixx vdd voltage to: 1181 (GPU-z shows VDDC voltage: 1.115 V, going lower, system will become probably unstable).
cgminer (put temp. settings as you wish...): --shaders 2048 -g 2 -I 13 -w 256 --auto-fan --gpu-memclock 1485 --gpu-engine 1080 --gpu-powertune -20 --expiry 1 --scan-time 1 --queue 0 --no-submit-stale

try it, and report

[radi324]

So would you guys recommend an R9 280x over a Sapphire HD 7950 card?