Quote from: child_harold on April 04, 2014, 07:03:51 PM

Quote from: azhago on April 04, 2014, 06:56:23 PM

Someone on the french forum about mining i come from run some tests with a simple rig setup, with 2 x R9 280X

All tests ran with the same frequency etc..
Each algo can be optimized, but for comparison, it's good.

Power at the wall:

Quote

Idle
80-90w

scrypt
550W - 2 x 720khs

Scrypt-N
537W - 2 x 350khs

Scrypt-jane
485W- 2 x 133khs

Groestl
271W - 2 x 7 025khs

Myr-G
295W - 2 x 9 920khs

skein
440 W - 2 x 212 500khs

Keccak
430W - 2 x 316 000khs

X11
285W - 2 x 2 080khs

Result : Groestl is the most gpu friendly algo, for power, temp and noise, even better than X11

a little tuning on one of mine:
4 R9 280x + 1 x 7950.
3 R9 are overclocked at 1250MHz, the 4th at 1150MHz - 1.2v
The 7950 runs at 1100MHz - 1.15v
Memory for all 4 run at 1000MHz
Look at the temp (scrypt : between 75 to 83°C)

Result : Groestl is the most gpu friendly algo, for power, temp and noise, even better than X11

Just a reminder